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  1. #1
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  2. #2
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    This bike is gorgeous! Considering as my next steed!

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    I agree. I have a deposit on a '13 Superfly 100 Elite. Way better kit on this bike even if it is another $1,500. There isn't one thing I'd change on this bike! I already got a new set of Havens ready to go and I'll keep the stockers for backups. I'm keeping my eyes on this one.

  4. #4
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    I have been riding the SpeedFox 29 this year and loving it. Geometry will be the same (perfect) but the new carbon frame being stiffer and lighter will make this bike absolutely incredible. Sumgai you mentioned X0 kit, from what I can gather it's going to be XTR, not X0. If it came X0 I would definitely be getting one, the XTR is making my decision very difficult. Also $6500 wouldn't be too bad of a deal for a full carbon frame, solid X0 kit, good Easton wheels, top of the line Fox Kashima suspension. If it comes frame only I may try to do that with the X0 build kit off my SpeedFox, that would be my dream bike. Can't wait to see more details on the bike.
    BMC FS01 29 X0
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  5. #5
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    BMC's website lists an XO kit for this bike but the photos show XTR. I'm fairly certain they will offer XO on their highest end FS01 29er. Perhaps the new XO group was not available at the time to build their press event bike. I'll be watching this closely.

  6. #6
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    Quote Originally Posted by sumgai View Post
    BMC's website lists an XO kit for this bike but the photos show XTR. I'm fairly certain they will offer XO on their highest end FS01 29er. Perhaps the new XO group was not available at the time to build their press event bike. I'll be watching this closely.
    That gets me all kinds of excited. The only page of info I can find about the bike on their site is this: BMC swiss cycling technology - new fourstroke FS01 29 - 2013 - BMC, Bicycles, Bikes, BMC Cycles, BMC Mountainbike, BMC Cycle It doesn't mention XTR or X0, but does show a picture of the bike with XTR as you said. Where did you see the X0 kit listed? Link?

    I'm really struggling to decide between this bike and the new Specialized Epic Marathon. I've always been a Specialized guy until this year I had a chance to ride the SF29 for a while. I know I love the BMC geometry, and that it would only be better and lighter in the FS01 carbon frame. I've never ridden an Epic, and finding an XL to test will be tough, so it's an unknown. I know the FS01 frame is about half a pound lighter, and the wheelbase is almost an inch shorter than the Epic. Advantages to the Epic are the carbon wheelset and the brain (if that's an advantage).
    BMC FS01 29 X0
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  7. #7
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    From a source who knows....The 2013 FS01 29 will be available in the US with both XO & XTR builds

  8. #8
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    Quote Originally Posted by agg1979 View Post
    From a source who knows....The 2013 FS01 29 will be available in the US with both XO & XTR builds


    Does this source also know when they'll be available?
    BMC FS01 29 X0
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  9. #9
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    Talked to my shop today, saw some specs on the FS01. Three build levels available, the X0 is my pick.
    BMC FS01 29 X0
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  10. #10
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    Word on the street is they will arrive in the US at the beginning of September.....

  11. #11
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    Quote Originally Posted by agg1979 View Post
    Word on the street is they will arrive in the US at the beginning of September.....
    Can't wait! Still debating over this bike or the Epic but I just keep coming back to the BMC.
    BMC FS01 29 X0
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  12. #12
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    Quote Originally Posted by Andrew-FSR View Post
    Still debating over this bike or the Epic.
    Don't be that guy. Get the BMC.

  13. #13
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    noice

  14. #14
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    Guys - any wheelbase numbers for the M and L frame sizes?
    Any sufficiently advanced technology is indistinguishable from magic
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  15. #15
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    Quote Originally Posted by sumgai View Post
    Don't be that guy. Get the BMC.
    HA! But I see your point. In actuality though, if I get the BMC I will be THAT guy. If I get an Epic I'll be just another guy on an Epic.
    BMC FS01 29 X0
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  16. #16
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    Quote Originally Posted by seleniak View Post
    Guys - any wheelbase numbers for the M and L frame sizes?
    I was going to tell you to look at the geometry of the 2012 Speedfox SF29 here, but I see that the wheelbase isn't listed. Weird. I have it noted as 1140mm for the L on my comparison spreadsheet, but I can't recall where I got that number. I will measure it to confirm tonight when I get home. If that is accurate, the M should be 1120mm since the reach measurement is 20mm shorter and everything else is the same.
    BMC FS01 29 X0
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  17. #17
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    Thanks Andrew-FSR. Appreciate it. Wasn't able to find wheelbase anywhere
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  18. #18
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    Sorry I didn't get this up last night. I measured my Large Speedfox SF29, and the wheelbase is 1140mm. From what I have gathered the geometry of the FS01 29 is supposed to be exactly the same. By my logic, since the Reach measurement of the Medium is 20mm less than the large and head angle and chainstays are the same, the wheelbase of the Medium should be 1120mm. Can somebody confirm if that's logical or not?

    Comparing the wheelbase of my Large to other bikes is probably a clue why I like it so much. For example an XL Epic is 1163mm, an XL 429 is 1157, an XL Camber is 1176, the new Occam 29 in Large is 1161, the Jet9 RDO at 1161 and the Jet9 at 1150. Heck my old 26" Stumpjumper FSR (back when it was 100mm XC bike, not the longer travel trail bike it is now) was 1188mm! Along with the Tallboy at 1135mm, it seems the BMC is one of the shorter wheelbases out there for a 100mm 29er. I admit I've never ridden any of the others, but I can't really think of any reasons a longer wheelbase would be better except for going in a straight line, and what fun is that?
    BMC FS01 29 X0
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  19. #19
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    Quote Originally Posted by Andrew-FSR View Post
    Sorry I didn't get this up last night. I measured my Large Speedfox SF29, and the wheelbase is 1140mm. From what I have gathered the geometry of the FS01 29 is supposed to be exactly the same. By my logic, since the Reach measurement of the Medium is 20mm less than the large and head angle and chainstays are the same, the wheelbase of the Medium should be 1120mm. Can somebody confirm if that's logical or not?

    Comparing the wheelbase of my Large to other bikes is probably a clue why I like it so much. For example an XL Epic is 1163mm, an XL 429 is 1157, an XL Camber is 1176, the new Occam 29 in Large is 1161, the Jet9 RDO at 1161 and the Jet9 at 1150. Heck my old 26" Stumpjumper FSR (back when it was 100mm XC bike, not the longer travel trail bike it is now) was 1188mm! Along with the Tallboy at 1135mm, it seems the BMC is one of the shorter wheelbases out there for a 100mm 29er. I admit I've never ridden any of the others, but I can't really think of any reasons a longer wheelbase would be better except for going in a straight line, and what fun is that?
    Andrew, you are spot on!

    We've got some of the shortest chainstays in the industry on a 100mm 29er. It's all part of a greater package including short chainstays, a low bb, short headtube/stack height, and a slacker HT angle. All of this really helps keep the handing agile and fun while still giving the benefit of the 29er wheels...cool?

  20. #20
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    Quote Originally Posted by RiDe_BMC View Post
    Andrew, you are spot on!

    We've got some of the shortest chainstays in the industry on a 100mm 29er. It's all part of a greater package including short chainstays, a low bb, short headtube/stack height, and a slacker HT angle. All of this really helps keep the handing agile and fun while still giving the benefit of the 29er wheels...cool?
    I love my Speedfox SF29. Such a fun bike and handling is great. Only ask would be a bigger size for "real" tall folks. I am 6'6" and I am making the L work, but with a LOT of seatpost and a 120mm stem. It still rides great though. Of course it's not much smaller than a lot of XLs out there, because of your intent to use a short stem, and an XL would produce a longer wheelbase, so maybe the L is good. I love it. Hoping to get a FS01 very soon.
    BMC FS01 29 X0
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  21. #21
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    Quote Originally Posted by RiDe_BMC View Post
    Andrew, you are spot on!

    We've got some of the shortest chainstays in the industry on a 100mm 29er. It's all part of a greater package including short chainstays, a low bb, short headtube/stack height, and a slacker HT angle. All of this really helps keep the handing agile and fun while still giving the benefit of the 29er wheels...cool?
    Any information yet about a frameset option for this bike?

  22. #22
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    Anybody heard availability for the FS01, specifically the X0? Trying to get my hands on one ASAP!
    BMC FS01 29 X0
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  23. #23
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    Any more news on the FS01?
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    Quote Originally Posted by Andrew-FSR View Post
    Any more news on the FS01?
    Got info from BMC USA that a frameset will be available in January 2013! :-)

    With a 120 mm fork this could be the ultimate xc & trail bike...

  25. #25
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    Any MSRP on the frame only?

    Quote Originally Posted by Xizor1 View Post
    Got info from BMC USA that a frameset will be available in January 2013! :-)

    With a 120 mm fork this could be the ultimate xc & trail bike...

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    Quote Originally Posted by seleniak View Post
    Any MSRP on the frame only?
    I asked this also, but no reply as of yet. If the frame price is reasonable, this will most likely be my next bike.

  27. #27
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    Quote Originally Posted by seleniak View Post
    Any MSRP on the frame only?
    Just got information from tomsbikecorner.de that the FS01 frame will be available in 01.03.2013 and will have a MSRP of 2999 € ! (FS02 will not be available as a frameset)

    Let's just hope the actual selling price will be a bit lower...if not, then FS02 complete bike would be a much better option as it is only 500 € more expensive:

    BMC Fourstroke FS02 29 XT wei kaufen bei tomsbikecorner.de

    EDIT: Also got information that the carbon and layout are not the same for FS02 as FS01 so it's not only the aluminium chainstays that are different...
    Last edited by Xizor1; 10-08-2012 at 03:27 AM.

  28. #28
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    Twentynineinches has the FS01 on test, look forward to more feedback from them.

    BMC Fourstroke FS01: On Test
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  29. #29
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    TwentyNineInches has their mid-term report up on the FS01. http://twentynineinches.com/2012/11/...fs01-mid-term/

    Surprisingly little new to say, but they still love it.
    BMC FS01 29 X0
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  30. #30
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    double post
    Last edited by tootall; 11-15-2012 at 11:41 AM. Reason: double
    BMC FS01 29 X0
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  31. #31
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    Any news on when this bike will be available in the U.S. market? I was told spring 2013. Is there a delay?

  32. #32
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    Quote Originally Posted by TJRosson View Post
    Any news on when this bike will be available in the U.S. market? I was told spring 2013. Is there a delay?
    Hi TJ, We've already shipped the first batch. The next selection of FS01s and FS02s should be in our warehouse within a few weeks.

  33. #33
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    I'm still waiting on mine. I was told December, but I'm not sure exactly what that meant. Hopefully soon.
    BMC FS01 29 X0
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  34. #34
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    Quote Originally Posted by RiDe_BMC View Post
    Hi TJ, We've already shipped the first batch. The next selection of FS01s and FS02s should be in our warehouse within a few weeks.
    Thanks. A person at Competitive Cyclist told me they'd have them in the spring. I thought that was kinda late.

  35. #35
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    Got word on Friday that my FS01 X0 size L is on its way!
    BMC FS01 29 X0
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  36. #36
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    I picked up my new FS01 29 X0 last night. It's a size large. Out of the box with plastic test pedals it weighed 24.5 lbs. This is with the heavy Onza tires and tubes. Of course it's raining here so it'll be a bit before I can take it out for a spin, but I can't wait. Having been riding the SF29 since February I'm very familiar and a big fan of the handling. Can't wait to see how the CTD suspension feels, how the carbon frame compares and how the much lighter bike rides.
    BMC FS01 29 X0
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  37. #37
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    Just a heads up: the spec page for the FS01 XO lists the fork as "Fox 32 Float CTD Adj FIT Factory Kashima 100mm". The fork that came on my bike doesn't have the Kashima coat or the trail adjust knob. This was mildly disappointing, but I will say it's the only disappointing part of the bike. Everything else is super sharp and as spec'ed. The black/red X0 shifters and brakes look awesome with the frame. The X0 cassette is so sweet, I hadn't seen one of those before. The type 2 rear der seems like it will really reduce chain slap and drops.The Easton wheels look really nice, even though I'm not planning to use them, and they did include the tubeless valve stems and 12x135 rear axle adapters. The optional chainguide that mounts to the chainstay WAS included so that's a cool feature if you want to use it. I weighed the Onza Canis tires, and though I'd seen reported weights elsewhere of over 800g, mine weighed in at 628g and 648g, which is really pretty good for a meaty 2.25 tire. Can't wait to finish my build and show it off.
    BMC FS01 29 X0
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  38. #38
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    Andrew-FSR - would love an actual frame weight if you don't mind

    Quote Originally Posted by Andrew-FSR View Post
    Just a heads up: the spec page for the FS01 XO lists the fork as "Fox 32 Float CTD Adj FIT Factory Kashima 100mm". The fork that came on my bike doesn't have the Kashima coat or the trail adjust knob. This was mildly disappointing, but I will say it's the only disappointing part of the bike. Everything else is super sharp and as spec'ed. The black/red X0 shifters and brakes look awesome with the frame. The X0 cassette is so sweet, I hadn't seen one of those before. The type 2 rear der seems like it will really reduce chain slap and drops.The Easton wheels look really nice, even though I'm not planning to use them, and they did include the tubeless valve stems and 12x135 rear axle adapters. The optional chainguide that mounts to the chainstay WAS included so that's a cool feature if you want to use it. I weighed the Onza Canis tires, and though I'd seen reported weights elsewhere of over 800g, mine weighed in at 628g and 648g, which is really pretty good for a meaty 2.25 tire. Can't wait to finish my build and show it off.
    Any sufficiently advanced technology is indistinguishable from magic
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  39. #39
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    Quote Originally Posted by seleniak View Post
    Andrew-FSR - would love an actual frame weight if you don't mind
    I don't think I'll ever get it stripped down to frame only, sorry. If I do I'll post the weight though.
    BMC FS01 29 X0
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  40. #40
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    tested and approved
    now finding an agreement wiht my lbs to have the ultimate spec
    for my riding
    seems difficult to find full-oem-bikes in my size

    it rides like a DW-link (ouch)
    playfull
    it is a little more nervous in the long/fast downhill then I expected
    (but then I have a coil-sprung 150mm enduro bike as well)
    but the wheels help you over most of the loose branches etc
    for "trial" the geo&29er wheels are superb

    how to finalise spec tomorrow
    and then race it in the Ardennes (.BE) early may

  41. #41
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    Quote Originally Posted by flupke73 View Post
    it rides like a DW-link (ouch)
    What does this mean?
    BMC FS01 29 X0
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  42. #42
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    rear suspension has little pedal-bob,
    damper is not very important,
    stiff
    => GOOD
    although for some rough trails it is a bit less playfull

  43. #43
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    Here's the new build. Still waiting on the new fork, so haven't gotten a final weight yet. The fork on there now is a 2012 RLC, I sold the stock fork and ordered a 2013 CTD w/ Trail Adjust to replace it.

    Changes:
    Roval Carbon wheels
    Specialized Phenom saddle
    Easton EC90 110mm stem
    Ergon GS1 grips
    Crankbrothers Eggbeater 11s
    Schwalbe Rocket Ron/Racing Ralph (currently Snakeskins for rocky race this weekend, will be EVOs normally)
    160mm rotors

    Compared to my 2012 SF29, the difference in weight is very noticeable when moving the bike around on the trail. I'm not sure I can feel any difference accelerating (no climbs around here to really feel a difference on) but the handling is clearly lighter. The frame stiffness helps in the corners, I thought the SF29 was stiff but this one holds a line even better. I had been using these wheels on the SF29 also so the differences I'm feeling are in the frame. The rear suspension is plusher, probably due to the new damper with the Kashima coat and the new bushing at the top shock mount. I wouldn't say it's more active under pedaling though, just plusher through the rough. I didn't feel a huge difference between the Descend and Trail positions, but Climb is very stiff, pretty much locked out. Feelings are subjective, but the proof is in the numbers: my first 2 days on the bike I set 8 new PRs, 3 of them KOMs. It's fast.
    Attached Thumbnails Attached Thumbnails 2013 Fourstroke FS01 29-photo-jan-19-12-31-08-pm.jpg  

    BMC FS01 29 X0
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  44. #44
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    Nice new BMC Trailcrew video


  45. #45
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    2013 BMC fourstroke FS01 XTR.

    hopefully the snow melts soon so I can take it for a ride!

    i'll post up a review in a few weeks time once I get some miles on it.

    It was either this, or the niner jet 9 RDO. But I fell in love w/ the BMC.

    Weight w/o pedals is 22.8lbs (i converted the ounces) for a LARGE frame--well below what i've seen posted for the medium frame. With XTR race pedals, i'm expecting the weight to be around 23.47lbs.

    This is running the race kings tubeless using stan's sealant.
    Attached Thumbnails Attached Thumbnails 2013 Fourstroke FS01 29-bmc-fs01-weight.jpg  

    2013 Fourstroke FS01 29-photo-2.jpg  


  46. #46
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    Great looking bike! Have you had much experience with other full suspension 29ers? I ride the hardtail version of your bike and love it but am curious how this suspension climbs and how efficient it is. I look forward to your impressions.

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    This is actually my first mountain bike. I have a road cycling background and come from the 'stiffer the better' mentality. So I was definitely worried about getting a FS bike and having it bobbing under power. There's definitely a lack of stiffness coming from my road bike, but i'm going to say that any bobbing you do notice (with the suspension locked out) is most likely a function of running a high volume tire at a low PSI).

    So yea, this bike is incredibly efficient.


    I finally put in a good 50 mile ride on it today.
    not sure if you're familiar w/ boulder, colorado, but I set out to ride walker ranch and rode up flagstaff mountain road. This is normally a tough climb on a road bike, especially the last few miles.

    I locked out the suspension, and managed to get within ONE MINUTE of my best time on my super light road bike (~15lbs or less, carbon frame, enve wheels etc). I was blowing by people on road bikes.

    On one of the strava segments (flagstaff to walker and back), I cut 20 minutes off my best time on my road bike. Part of this is b/c I ride another 5 miles beyond walker and am pretty spent by the time I come back up the backside of flagstaff road. But a big part of it was that I LOVE the gearing on the bike, and it enabled me to save my legs and spin up the climb.

    I'm not talking about granny-gearing it, but being able to ride the 32x11 seems to be just the right gearing to keep me below threshold and spin up the climb.

    The bike definitely isn't lacking in top end speed either. I have a 12x28 w/ a 53 big chainring on my road bike, and I was surprised that I could power down a lot of the descents.


    I didn't do a ton of technical climbing on the trails, but I did hit a few steep sections.
    I was able to power up the steep, rocky sections pretty efficiently using the trail settings front and rear. If you do a ton of super steep climbs, you may want to consider a 100 or 110 stem. I definitely felt the front get light on some of the really steep stuff.

    I didn't think i'd like the 90mm stem that comes stock, but the bike fits me really well (6.2, 33 inseam, 158lbs). The shorter stem definitely makes the bike feel playful and agile.

    I've yet to run the suspension fully open b/c my route didn't have a lot of technical descents. But the trail mode did it's job admirably (I rode it on the firm trail tune).

    I'm running around 22-24% sag in the rear and a lil less up front b/c I like it to be as close to locked out as I can get it for climbing.

    The rear is incredibly efficient at transferring power. You can power up the climbs in the trail mode. It almost feels more efficient in trail mode, especially if it's a technical, rocky climb.

    I wish the front fork had a lil more of a true lockout, but i'm sure I can add some pressure and get it a lil stiffer. Although i'll probably change my mind on this once the more technical trails dry out. This was probably also compounded by a problem I was having w/ my front tire not sealing up and leaking air during the ride (it lost about 25psi). So i'm sure that had a lot to do w /a the front end feeling less than ideal.

    The XTR brakes are AWESOME, but I probably didn't need to tell you that.

    definitely no complaints about the wheels, but the raceking race sport tires are a ***** to get them to seal. Plan to use 1.5 + bottles of stan's, as they pop up a lot of pinhole leaks.

    If you're on the fence, I would get this bike w/o a doubt. The FS model has better traction than a hard tail, allowing you to run higher pressure in the tires. The rear tracks the ground so so well. The fourstroke is only 1lb heavier than the team elite, which is pretty insignificant considering what the average rider carries with them on longer rides.

  48. #48
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    I put in a 75 mile ride on sunday (about 50 miles of single track). The bike can definitely hold its on out there on technical terrain.

    A word of caution: put at least 3oz of stans in each tire (4 oz would be safe). I've gone through 5 CO2 cartridges during the course of 2 rides. at first the front tires was losing air. had a mechanic add more sealant, and now it hasn't lost pressure in 2 days. the rear is beat up pretty bad from the ride, sidewall leaking stans all over the place. definitely going to have to add more sealant. the conti's are super porous. i'd steer clear and mount a different tire like a racing ralph.

  49. #49
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    a few other observations:

    if you put 40psi in the tires and lock the suspension, it literally feels like a road bike--it simply does not bob under power.

  50. #50
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    Finally got my FS01 on the scale today. Weight in Large is 22.48lbs. I was pretty happy. Build list at weigh-in is below:

    X0 drivetrain (stock)
    Eggbeater 11s
    Specialized bottle cage
    Roval Control SL wheelset
    Schwalbe Racing Ralph rear/Rocket Ron front
    Fox 100mm F29 CTD w/Trail Adjust fork
    Easton EC70 straight seatpost
    Specialized Phenom SL saddle
    Easton EC90 110mm stem
    Easton EC70 XC Wide bar (stock)
    Ergon GX1 grips
    GPS mount
    2013 Fourstroke FS01 29-pre-oc-2013.jpg
    BMC FS01 29 X0
    Redline Monocog 29
    Jamis Supernova
    Rocky Mtn Flow DJ

  51. #51
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    looks pretty sweet in black/red. I was kind of annoyed they didn't allow you to choose that frame for the XTR build, but then again, the XTR build is absolutely amazing.

    I have around 200 miles on mine via the colorado front range trails (walker ranch, heil, hall ranch, betasso preserve).

    going -3 on rebound front/rear made a huge difference in small bump compliance and confidence--doesn't feel like a pogo stick anymore. of course, I like to run higher pressures (35psi) b/c I hate the bouncy tire feeling. so i'm sure that doesn't help.

    the bike climbs super efficiently and is allllllmost as efficient as my road bike. There's barely any pedal bob that you can't chalk up to lower tire pressures.

    run the tires at 35-40PSI w/ the suspension locked, and it's as snappy and responsive out of the saddle as a road bike (w/ big tires).

    the bike is super nimble, and I think it's the perfect set up w/ the 90mm stem. going back to my road bike feels horrible after getting use to the stiffness and immediate precision of the front end on this bike.

    not sure how yours feels with that 110 stem. does it make that much of a difference in keep the front wheel from wandering during super steep climbs?

    I see you upgraded to the kashima coated forks....

    what's that you have strapped to the front of your top tube?

  52. #52
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    I run my tires at about 21/23 psi because I ride trails. The 110 stem has been fine, I'm 6'6" so I had to have a bit longer stem. Yes, I did the upgrade because I wanted the Kashima but also the 3 position trail adjust feature which I've found to be real nice. On my top tube is a Backcountry Research strap with a tube, CO2 and tire lever. This was before the start of a 60mile race so I had 2 flat kits on the bike.
    BMC FS01 29 X0
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  53. #53
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    hmm...maybe i'll give the lower PSI a try. I'm definitely losing a lot of traction and getting knocked around in rock gardens.

    why not just carry the flat kits in your jersey?

    I can fit a spare bottle, a light jacket, arm warmers, 3 energy gel pouches, 2 spare tires, co2, levers, a pump, and my iphone in my LG jersey (3 pockets).

  54. #54
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    Yes, lower pressure will definitely help with traction. Work your way down slowly to see what you can tolerate, it's dependent on weight and riding style how low you can go.

    It's typically better to add extra weight on your bike than in your jersey. When it's in your jersey it's pulling on your shoulders all day and everytime you stand out of the saddle you're lifting that weight. You feel a whole lot better after 6 hours on the bike without a bunch of stuff in your pockets.
    BMC FS01 29 X0
    Redline Monocog 29
    Jamis Supernova
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  55. #55
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    good point. maybe i'll get a seat bag. my damn jersey is starting to rip from all the weight!

  56. #56
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    Quote Originally Posted by Jamesm925 View Post
    good point. maybe i'll get a seat bag. my damn jersey is starting to rip from all the weight!
    Exactly! I think you will really feel the difference after several hours on the bike without your jersey pockets weighing you down and pulling on your shoulders the whole time. Glad I could help. Seat bags are nice because they will contain different things, but I prefer the straps to keep the essentials handy for quick access and it's not flopping around underneath my saddle, it's very tight and secure.
    BMC FS01 29 X0
    Redline Monocog 29
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  57. #57
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    out of curiosity, how much sag are you running on your bike and what are you trails like (rocky, smooth etc) ?

    someone on here told me that running %25 sag on an xc bike will make it wallowy, and that 15-20 is much better.

    i'm in the front range of colorado, where it's very rocky. still, I do want my bike to be stiffer, especially when I have the suspension open...

  58. #58
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    I usually set my sag with the shock open to be just barely stiffer than the recommended line on the link. I keep the shock in Trail mode most of the time. If I'm racing a very smooth course I'll set the air pressure a little bit higher.
    BMC FS01 29 X0
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  59. #59
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    just got back from a ride. I set the shock and fork to 15% sag. HOLY CRAPOLA! It's like a different bike. Even in descent mode, the rear just refuses to squat or sag, and I can actually climb out of the saddle without bouncing like a madman.

    descent mode now has the the platform feel of trail mode set to really soft. The bike just scoots up the trail while climbing, especially in the saddle--in descent mode!

    In trail mode, it's just awesome. very efficient.

    I wasn't really seeing the whole anti-squat linkage design before. It just wallowed. Now the rear seems to stiffen up dramatically under power, but still remains plush on the downhills--exactly what you'd want an xc bike to do.

    I also played with the rebound damping a bit, but not by much. Surprisingly, the bike's small bump sensitivity seems to have dramatically improved. I'm not getting knock around as much, which seems counterintuitive to adding pressure to the fork and shock.

    i'm 158lbs without gear, and running 95psi in the rear and 90psi in the front, rebound dampening on front is 13 clicks positive (away from the slowest setting). In the rear, it's at 9 from the slowest setting.

  60. #60
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    how do you like the longer stem on your bike? I feel like I could definitely be a bit more stretched out on the bike.

    Did it negatively affect the DH handling of the bike?

  61. #61
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    The Fourstroke is a beautiful bike. Seems perfect for everything I have on my mind. Just that I just got a BMC TeamElite 02 (the older 26er version) less than a year ago and a student's budget doesn't permit a new bike every year, but if I could I'd go with the XO version of this one… well… after I finished studying MAYBE I can get it then

  62. #62
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    Mine's on the way!!! Should have it before next weekend rolls around.

  63. #63
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    Wanted to give everybody a heads up who owns an FS01 to a problem I recently discovered. The rear shift cable housing runs down the top tube then is internally routed through the chainstay to the rear derailleur. Where the cable enters the chainstay just behind the BB, there is no protection for the carbon from the cable housing moving due to suspension movement. Over less than a year of riding, mine has significantly worn through the carbon and created a large hole. I would recommend putting something in place to stop the wear on the carbon. Ideas I had were some of the snap on frame protectors from Jagwire or Sram (Amazon.com: SRAM Frame Protector for Brake and Shift Cable Housing (Set of 4): Sports & Outdoors , Amazon.com: Jagwire Tube Tops 3G, Housing Covers/Frame Protectors, Black, Bag/4: Sports & Outdoors), or a cable boot such as used on a v-brake (Amazon.com: Pyramid Cable Boot V-Brake Rubber Black: Sports & Outdoors). Share any other ideas or solutions you find.

    Here's the wear on my frame. This should be a small hole approximately sized to match the cable. I have reported this to my dealer and they're passing to BMC, we will see what they say. This really should have been installed with a grommet in place.

    2013 Fourstroke FS01 29-bmc-swingarm-1.jpg

    2013 Fourstroke FS01 29-bmc-swingarm-2.jpg
    BMC FS01 29 X0
    Redline Monocog 29
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  64. #64
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    9 655 gr.






  65. #65
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    nice rig! hard chioce between Turner CZAR & FS01

  66. #66
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    Re: 2013 Fourstroke FS01 29

    +/- 400 grams and vpp vs dw suspension
    12 Anthem X29
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  67. #67
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    Very nice.
    15 Yeti ASR-c
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  68. #68
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    Quote Originally Posted by rapsac View Post
    +/- 400 grams and vpp vs dw suspension
    DWlink is as VPP suspension too. But if you refer to the commercial VPP term, then the BMC is not one of them.

    In fact the FS is more like a first gen DWlink, whereas the TF is more like last generation DWlink
    Frenchspeaking 29"ers community site http://VingtNeuf.org

  69. #69
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    I did a first 35km ride on my new Fourstroke. It is not a FS01, but FS02 with alloy rear triangle. Size large, 2013 model. This is my first 29", first full-suspension bike and first carbon bike. Learning to ride the bike and feel it will probably take some time.

    I've already done some modifications. Replaced the flat handlebar with Easton XC70 lowriser bar. It is little bit narrower (680 vs 720mm), 100gr lighter, but most imprtantly rises the brake levers and shifters higher, so they cannot hit the top tube in case of crash. The stock wheels were DT Swiss X1800 with 350 hubs and weighted 2080gr. I rebuilt them with Sapim D-light spokes, Sapim alloy nipples and WTB KOM rims. The final weight is 1690gr. I'm running the original Onza Canis tires tubless. Wheel rebuild and tubeless setup saved me more than 600gr of rotational mass. I replaced the saddle with Selle SMP Avant. I wanted the saddle further back so I replaced the original Easton XC70 seatpost with Fizik Cyrano alloy seatpost that had some setback.

    Final weight with Look Quartz pedals is 11.55kg. The weight is identical to the weight of my 26" alloy hardtail that I have been riding last four years. Also, the weight of the wheelset is identical. The front end of two bikes is very similar - the position of handlebars in relation to bottom bracket is identical. But Fourstroke has steeper seatpost that puts the saddle too forward for me. Therefore I must use the seatpost with setback and slide the saddle quite backward to get good riding position.

    Given this similarity between bikes it was very surprising how different the new bike felt.

    On the positive side the new bike was very easy to steer. Old bike was quite nervous. New bike was much better on the rougher sections - on the rooty trails and downhill sections. There was almost no need to get out of saddle and it felt safer to descend at faster speed. Rooty climbs also felt little bit easier.

    On the negative side the new bike felt little bit dull. I'm not completely sure what caused this and if I can adequately describe it. I think that it did not response as sharply to acceleration as old bike did.

    I'll first play with the rear suspension settings. Perhaps I was running the rear shock too soft. Or perhaps the Onza Canis tires are just slower than the Rocket Rons that I've used so far. I might try to swap the tires. Or perhaps it is just the bigger inertia of the 29er wheels.
    Attached Thumbnails Attached Thumbnails 2013 Fourstroke FS01 29-afterfirst.jpg  


  70. #70
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    Quote Originally Posted by arnea View Post
    On the negative side the new bike felt little bit dull. I'm not completely sure what caused this and if I can adequately describe it. I think that it did not response as sharply to acceleration as old bike did.

    I'll first play with the rear suspension settings. Perhaps I was running the rear shock too soft. Or perhaps the Onza Canis tires are just slower than the Rocket Rons that I've used so far. I might try to swap the tires. Or perhaps it is just the bigger inertia of the 29er wheels.
    I think that the dullness was caused by too low shock pressure. I weight ~95kg and was running the shock at 150psi. Shock was much better at 190psi, but not as plush as I wanted. 180psi was good for small bumps and bike was still "sharp". On the negative side it went through travel too easily. BTW, I was running the shock and fork in descend mode.

    There is quite good analysis of the Fourstroke suspension here: BMC Fourstroke 29'' 2013 - Linkage Design

    The leverage ratio increases at the end of stroke - this counteracts the natural progressivness of the air shock so the resulting force graph is almost linear. Interesting what was the thinking behind this linkage design?

    For more progressive linkage, I installed the spacer into the air chamber. Fox allows to use only 0.2 cubic inch spacer in this shock. 0.4 spacer would reduce the air chamber too much. I made my own 0.3 cubic inch spacer and also reduced the pressure to 170psi. Rear suspension feels now much better - more plush and did not bottom out on bigger hits. And the bike still felt "sharp".

    I will also make fork more progressive by adding some extra Float fluid to fork's air chamber and reducing the air pressure little bit.

  71. #71
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    Saddle position

    I have a question regarding the saddle fore-aft positioning.

    I found that with stock seatpost the saddle was still too forward even when it was pushed as far back as possible. And I'm using Selle SMP saddle that has very long rails.

    In this position there was still too much pressure on the hands.

    I switched to setback seatpost to get the saddle into good position (saddle nose is ~11cm from bottom bracket) that does not put extra pressure on my wrists. BTW, now I have exactly same setup as I had on my old bike.

    I've attached the picture of my saddle and seatpost. I'm 6'3" (191cm) and weight 230 lbs in full gear (105kg). The saddle is about ~5cm backwards from the "normal" position where the straight seatpost would put it.

    I'm little bit worried - is such a rearward position still safe for frame?

    Interestingly the front end of the bike has good dimensions - reach and stack suite me. Only the saddle is too forward. I looked around and it seems that most of the bikes in this segment have even steeper seatposts than Fourstroke.

    What is your experience with the saddle positioning?
    Attached Thumbnails Attached Thumbnails 2013 Fourstroke FS01 29-setback.jpg  


  72. #72
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    try to longer your stem, the stock stem shown in the picture looks doenst fit you heigh. You cant just put back the saddle, it can be dangerous to you and your bike

  73. #73
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    Something else is not right in that you need 11cm of saddle setback to alleviate pressure on your wrists. That is more extreme than most pros on their road bikes, who tend to run a lot of setback in the first place:

    http://weightweenies.starbike.com/fo...4&t=110418

    Do you have any other pictures of your setup? What's your true inseam measurement?

  74. #74
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    Thank you for the help xuzuohang and savechief. Thanks for the Weightweenies link. I will read this thread.

    First of all, some pictures:




    I tried the Fizik alloy seatpost with setback, but decided not to use it. It's diameter was just a little bit too small and it was knocking in the seattube. I put back the stock Easton EC70 seatpost and also moved the saddle little bit forward as you can see in the picture.

    Right now the saddle height is 80-81 cm from BB, saddle to handlebars drop is 5cm, distance from handlebars to saddle nose is 60cm and from BB to saddle nose 9.5cm.

    My own measurements are: height 191cm (6'3"), inseam 94cm (37"), arms 72cm (28").

    I followed xuzuohang advice and used longer stem. 90mm instead of 70mm. It felt better on the road. The hands were resting on the handlebars with the upper part of palm (next to fingers) being the main contact point and there was less pressure. With stock stem the lower part of palm (next to wrist) was in contact with handlebars and it felt as if I was pushing the handlebars forward. Also - pressure is not unbearable, just uncomfortable.

    But on the trail the longer stem was not so good. With the stock stem the bike has very nice handling - very stable and precise. With longer stem it was not so sensitive in the middle, but bit nervous when the handlebars were turned more. Also it felt that there was too much weight on the front wheel.

    The bike is nice for shorter trips on the trail as it is, but I would like to use it also for longer events like multi-day adventure races and are bit worried about the possible uncomfort.

    My next plan is to try little bit longer and steeper stem that would put me little bit more upright position and move the CG back little bit. Something like 75-80mm and 10-12 degrees.

    BTW how far back can one safely move the saddle? I'm afraid that the extra leverage might damage the frame when landing hard.

  75. #75
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    arnea, think about these: 1.wider handelbar (flat)
    2.fork preload(some fox fork need to change preload spring to hold big weight rider)
    3.shock preload
    4.longer saddle(like some road saddle can help rider adj their CG move forward or back)


    I think the problem is you cant get stretch on you bike, if you keep sit backward, you knee cant keep in line from the axle of pedal, then all the pressure gathering on your back and arm .

    If your LBS got a fitting equipment ,you best have a try than wasting money to buy different parts.

  76. #76
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    Thank you for the comments. I thought about the bike fit session. Problem is that it is high season right now and they are very busy. Regarding fork and shocks - I already made the springs more progressive - spacer in the shock and extra float fluid in the fork. Wider handlebar might be good idea (in fact I went to narrower handlebars (from 720 to 685mm) because I got really good deal on Easton XC70 low riser bars).

    I've added picture of my riding position:



    I'm open to further suggestions, but I'll probably try the bike fit session.

  77. #77
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    Looks like you may need a bigger bike? (sorry).
    12 Anthem X29
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  78. #78
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    Went into the local bike shop that is owned by ex-pro racer. We spent about 10 minutes and I left with 11cm stem and saddle that was ~2.5cm more forward and 1cm higher than before. It felt really good on road and I had much more power. No pressure on hands.

    Riding position after adjustments:



    It is quite hard to see differences, so I colored the two pictures and superimposed them:



    Red is old and bad and blue is new and good. The changes are quite radical. The center of gravity is much more forward and little bit lower. I must try it at trail to see how it feels and how the bike will handle. With 11cm stem it will be probably be very different and not for the good side. I must find some compromise between road and trail riding properties.

    rapsac and xuzuohang you were both right: the bike is too small for me and I needed longer stem.

    The mistake started with using my old bike that I set up myself as a reference for buying new one. The old bike was also too small - it was just possible to achieve sufficient handlebars-saddle distance by moving the saddle way backwards. But the riding position was inefficent.

    Right now with the long stem I have same handlebars-saddle distance that I had on my old bike and in addition, I'm positioned correctly in relation to BB, so the ride is efficient.

    The reach of the L-size Fourstroke (456mm) is too small for me to use short stem. I looked at the geometry of some other bikes in this segment. Bikes with XL frame that had bigger reach than Fourstroke were Specialized Epic (462mm), Specialized Camber (466mm) and Salsa Spearfish (458mm). Santa Cruz Tallboy, Niner Jet, Pivot Mach 429, Ibis Ripley and Cube AMS 100 all had smaller reach. So basically I need XXL sized frame in order to use shorter stem. Or XL sized Fourstroke.

  79. #79
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    What shock?

    I was wondering what shocks are you using on your FS? Do you find the original Fox Triad sufficient or have you upgraded?

  80. #80
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    Good to see u fixed the fitting problem! Ride on!

    Most FS01 I have seen by now using the original Fox shock

  81. #81
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    I actually rised the front end even more, running the 120mm 17 deg stem now. Distance from saddle is same as 110mm 6 deg stem, but my sittin position is more upright. Latest change was change of fork. I got rid of Fox CTD and installed Manitou Tower Pro. It is little bit higher than the Fox was, but most importantly it is much better for my weight and riding habbits. I'm just starting to tune it but the first two rides have been just marveolus. Next thing is to get rid of the Fox shock. Right now I'm looking at Monarch, because it is completely user servicable and I can retune it for my weight and liking. Now, when I'm thinking about it - very soon I have only frame and groupset from the original bike left. Already rebuilt the wheels, swaped the fork, saddle, handlebars and stem.

  82. #82
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    your frame is WAY too small if you're running a 120 stem. that's a roadie stem...

    I run the stock stem on my large fs01 and have plenty of room.

  83. #83
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    Re: 2013 Fourstroke FS01 29

    Quote Originally Posted by Jamesm925 View Post
    your frame is WAY too small if you're running a 120 stem. that's a roadie stem...

    I run the stock stem on my large fs01 and have plenty of room.
    That was established some posts previously. No point in repeating?
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  84. #84
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    I finally got rid of the original Fox shock. Replaced it with Rockshox Monarch RT3 Debonair. It was big improvement.

    It is really unfortunate that all Fourstrokes are equipped with such inferior shocks.

  85. #85
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    Tootall-

    what is your inseam and do have a handy measurement from your bike; BB center to top of saddle? Tks!

    Quote Originally Posted by tootall View Post
    Finally got my FS01 on the scale today. Weight in Large is 22.48lbs. I was pretty happy. Build list at weigh-in is below:

    X0 drivetrain (stock)
    Eggbeater 11s
    Specialized bottle cage
    Roval Control SL wheelset
    Schwalbe Racing Ralph rear/Rocket Ron front
    Fox 100mm F29 CTD w/Trail Adjust fork
    Easton EC70 straight seatpost
    Specialized Phenom SL saddle
    Easton EC90 110mm stem
    Easton EC70 XC Wide bar (stock)
    Ergon GX1 grips
    GPS mount
    Click image for larger version. 

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  86. #86
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    10,4kg/22,9 lb including XTR pedals and everything in pictures on size L. Some adjustments and it is <10kg/22lb.

    Feels quick, fast, stiff and playful

    - Roval carbon wheels
    - Onza 2.25 tyres
    - Rotor Rex1 crankset with 34t QX1 oval ring
    - XX1 casette and chain
    - Sid xx fork
    - 3t carbon seatpost
    - truvativ carbon handlebar
    - X1 rear derailleur
    - X1 shifter
    - 3t stem
    - specialiced phenom saddle
    - XTR xc race brakes

    Bmc says that there is internal cable routing for the rear suspension remote, but I haven't seen anything but little holes for shimano electric gear shifting. So tried to route the hose there Time will tell how it works in action.


    2013 Fourstroke FS01 29-img_0659.jpg2013 Fourstroke FS01 29-img_0660.jpg2013 Fourstroke FS01 29-img_0662.jpg

  87. #87
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    Quote Originally Posted by arnea View Post
    I finally got rid of the original Fox shock. Replaced it with Rockshox Monarch RT3 Debonair. It was big improvement.

    It is really unfortunate that all Fourstrokes are equipped with such inferior shocks.
    I'm looking into changing the shock also, but don't mind it being a Fox as long as it has remote levers. what are the specs of our shocks? Can't find them anywhere...(Fox CTD Kashima)

  88. #88
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    Quote Originally Posted by carbonrockstar View Post
    10,4kg/22,9 lb including XTR pedals and everything in pictures on size L. Some adjustments and it is <10kg/22lb.

    Feels quick, fast, stiff and playful

    - Roval carbon wheels
    - Onza 2.25 tyres
    - Rotor Rex1 crankset with 34t QX1 oval ring
    - XX1 casette and chain
    - Sid xx fork
    - 3t carbon seatpost
    - truvativ carbon handlebar
    - X1 rear derailleur
    - X1 shifter
    - 3t stem
    - specialiced phenom saddle
    - XTR xc race brakes

    Bmc says that there is internal cable routing for the rear suspension remote, but I haven't seen anything but little holes for shimano electric gear shifting. So tried to route the hose there Time will tell how it works in action.


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    That bike has to be lighter...I have a similar set up, but with heavier wheels and 1x10 at 21.9...

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    Quote Originally Posted by carlostruco View Post
    I'm looking into changing the shock also, but don't mind it being a Fox as long as it has remote levers. what are the specs of our shocks? Can't find them anywhere...(Fox CTD Kashima)
    What you mean by spec? The shock is 200mm eye-to-eye and 50 or 51 mm stroke or 7.825x2in

    You want low compression tune and medium rebound tune. Adding the spacer into air chamber makes the spring more progressive - personally liked it.

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    I needed those numbers (200mm and 7.835x2in) to start shopping...

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    Quote Originally Posted by carlostruco View Post
    That bike has to be lighter...I have a similar set up, but with heavier wheels and 1x10 at 21.9...
    My scale is cheap (not in picture) and maybe not so reliable, but if there is on size L about 500grams difference between your bike, I think that could come easily on different components.

    I am coming under 10kg/ 22lb if I want to change example:

    - Onza tyres
    - Saddle
    - rear and front thru axle
    - rear disc rotor
    - gribs

    CTD remote is also about 100 grams. I understood that you don't have one?

    My 2015 L size frame weighted with all hardware ( without shock remote, bb, headset bearings) 2,23kg/4,91lb
    Attached Thumbnails Attached Thumbnails 2013 Fourstroke FS01 29-10669157_10153372006953154_844237429627703514_o.jpg  


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    Quote Originally Posted by carbonrockstar View Post
    My scale is cheap (not in picture) and maybe not so reliable, but if there is on size L about 500grams difference between your bike, I think that could come easily on different components.

    I am coming under 10kg/ 22lb if I want to change example:

    - Onza tyres
    - Saddle
    - rear and front thru axle
    - rear disc rotor
    - gribs

    CTD remote is also about 100 grams. I understood that you don't have one?

    My 2015 L size frame weighted with all hardware ( without shock remote, bb, headset bearings) 2,23kg/4,91lb
    Mine is set up like this:
    Stock frame, fork, schock, handlebar, brakes and seatpost.
    Rotors - KCNC 160mm about 76g
    Wheelset - Stans Crest/Industry Nine Torch hubs/32 spoke - 1558g
    SRAM XX 11-36 cassette
    Schwalbe RaRa - about 558g each
    Selle Italia SLR Flow - 171g
    No front shifter and DR
    36t X01 ring
    KMC X10SL chain
    Elite bottle cage - 43g or something like it
    Crankbrothers Eggbeater 11

    I'm not a WW and will never sacrifice weight for durability.

    My Onza Canis weighted aroung 615g each, and I still have them on another wheelset for daily use. That set up has a SRAM XG 1080 cassette ans Stans Crest wheelset. I also switch pedals to Eggbeaters 3 and it comes at 22.5

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    Quote Originally Posted by carlostruco View Post
    Mine is set up like this:
    Stock frame, fork, schock, handlebar, brakes and seatpost.
    Rotors - KCNC 160mm about 76g
    Wheelset - Stans Crest/Industry Nine Torch hubs/32 spoke - 1558g
    SRAM XX 11-36 cassette
    Schwalbe RaRa - about 558g each
    Selle Italia SLR Flow - 171g
    No front shifter and DR
    36t X01 ring
    KMC X10SL chain
    Elite bottle cage - 43g or something like it
    Crankbrothers Eggbeater 11

    I'm not a WW and will never sacrifice weight for durability.
    I am a bit WW but still want quality and durability cause I am heavy rider. But now I can see weight difference with our bikes. Your rotors, cassette, tires, saddle and eggbeaters make the difference

    Also you before mention that my wheels are lighter. Yes, only 50 grams but they are awesome and best investment yet.

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    All the parts were moved from an bike the was sold...I kept them for racing only. I prefere the durability of the stock parts, but not when racing...

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    I understand.

    I have to make bit compromises between light-durability components when I am racing cause I'm heavy and "aggressive" racer.

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    Quote Originally Posted by arnea View Post
    What you mean by spec? The shock is 200mm eye-to-eye and 50 or 51 mm stroke or 7.825x2in

    You want low compression tune and medium rebound tune. Adding the spacer into air chamber makes the spring more progressive - personally liked it.
    are you sure it is 7.825 x 2.00? Fox does not list that one...in 2'' travel, they have either 7.50 or 7.875...

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    2013 Fourstroke FS01 29

    Sorry, my mistake. It is 7.875

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    Quote Originally Posted by arnea View Post
    Sorry, my mistake. It is 7.875
    ok...thanks...I just confirmed that with Fox also...I want to upgrade before race season starts...

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    2013 Fourstroke FS01 29

    Whats wrong with the default fox shock?

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    Quote Originally Posted by energie80 View Post
    Whats wrong with the default fox shock?
    Nothing! I'm happy with the original shock. I have also ridden RS monarch XX Xlock and I like more Fox CTD Kashima shock with remote. Maybe little weight penalty but still better. Matter of taste.

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