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Thread: FSI Carbon 4

  1. #1
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    FSI Carbon 4

    Hi
    Thanks for reading.
    I have just purchased an 2016 FSI Carbon 4.
    It was a great price and I appreciate that it does not have great components i.e. 2 x 10 ,alloy bars and posts etc.
    Could those that are familiar with the bike suggest upgrades I can make?
    Perhaps in order of bang for my buck.
    Thanks in anticipation
    Steve

  2. #2
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    I have the same bike- first thing I did was move to a 1x11. That should probably be your first change.

    You should be able to do it for $200 or less, if you shop around. If you are mechanically inclined and don't mind mediocre shifting you can swap to a 1x10 instead (for less money), just pick up a chainring (I used an Absolute Black since it will need the AI offset) and a Goat Link for the derailleur. The XT derailleur will work with a 42 tooth cassette but it's sub-optimal.

    I added a wider bar that I had sitting around, but found I liked the narrower stock one better so swapped it back.

    I also had a set of Rovals that I had redished and put a Left hub into. This dropped a lot of weight off the bike, the stock wheels are somewhat heavy. This isn't a cheap option unless you already own the wheels though.

  3. #3
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    Quote Originally Posted by Craig S View Post
    I have the same bike- first thing I did was move to a 1x11. That should probably be your first change.

    You should be able to do it for $200 or less, if you shop around. If you are mechanically inclined and don't mind mediocre shifting you can swap to a 1x10 instead (for less money), just pick up a chainring (I used an Absolute Black since it will need the AI offset) and a Goat Link for the derailleur. The XT derailleur will work with a 42 tooth cassette but it's sub-optimal.

    I added a wider bar that I had sitting around, but found I liked the narrower stock one better so swapped it back.

    I also had a set of Rovals that I had redished and put a Left hub into. This dropped a lot of weight off the bike, the stock wheels are somewhat heavy. This isn't a cheap option unless you already own the wheels though.
    Thanks for the great info Craig.
    Hope you are enjoying your 4.
    I have not ridden mine yet, this Saturday!
    1 x 11 was my first thought
    So I buy an xt 11 speed shifter
    An 11 - 42 cassette
    Remove the 2 chain rings and fit an Absolute Black
    What's a Goat link please?
    I am watching some c1 carbon bars on e bay.
    I can also get my hands on some Stans ZTR Rapid SRAM X9 Red wheels for 200 pounds.
    Would they be better wheels.
    Please keep the suggestions coming.
    I think I will also need a dropper seat post.
    Just sold my Niner Rp 9 and replaced with FSI, don't think I could do without the dropper post?

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    To do the 1x11 you'll need an 11 speed shifter, derailleur and the chainring. XT is fine, but I went with SRAM GX because I prefer it to XT. But either would be fine. I think I removed a couple links from the chain, but don't actually remember.


    If you want to stick with a 1x10, you'd just need a new cassette (Suntour makes one that is an 11-42 10 speed) and the Goat Link. The Goat Link is an extension that moves the derailleur farther from the cassette so you can use the stock 10 speed derailleur with a larger cassette (11-42 rather than the 11-36 the bike came with). Wolf Tooth Goatlink 10Speed > Components > Frames > Hangers & Dropouts | Jenson USA

  5. #5
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    Got it, Thanks Craig
    Think I will go with 1 x 11
    Any thoughts on the wheels?

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    I'm not familiar with those versions of the Rapids, but in general the Rapids aren't super light. I'm not sure if you'd be buying yourself much improvement.

    For my money, I think the Stan's Crests are the best XC value. $700 (whatever that would be in pounds) and under 1600 grams. Plus you can order them with a Lefty hub and AI offset directly from Stan's.

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    I also just picked up a 2016 F-SI 4 last weekend from a local bike shop, the deal was so good I had them put kn a KS internal dropper, and they switch me over to a 1x11, I will decide on the rims after a few rides. Can't wait to pick it up tomorrow.

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    It's an awesome bike. You will love it.

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    Quote Originally Posted by tjg986 View Post
    I also just picked up a 2016 F-SI 4 last weekend from a local bike shop, the deal was so good I had them put kn a KS internal dropper, and they switch me over to a 1x11, I will decide on the rims after a few rides. Can't wait to pick it up tomorrow.
    I would love to here your feedback after your first rides
    Could you please give me exact details ref the changes to date
    Spec,gears etc
    Thanks
    Steve

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    Steve,
    Took it out today on a regular trail we ride, and I have to say I love it. I usually get alittle winded half way thru my climb on my Fs Giant trance x 29er, and today on the new Cannondale, I just kept pedaling. Climbed about 1800 ft elevation and only once did I wish I had an easier gear, but its my first time out this season, and I know that will fade. 11-42 on rear and 32 up front. Love the dropper post as the descent was fun. Liked the way the bike handled on swithbacks its short chainstay makes it nimble. The funny thing is besides being faster on the climbs Strava had me with 4 trophies downhill, and that was the part I was worried about.

  11. #11
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    It's a shockingly good descender considering what its primary use case is.

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    Quote Originally Posted by tjg986 View Post
    Steve,
    Took it out today on a regular trail we ride, and I have to say I love it. I usually get alittle winded half way thru my climb on my Fs Giant trance x 29er, and today on the new Cannondale, I just kept pedaling. Climbed about 1800 ft elevation and only once did I wish I had an easier gear, but its my first time out this season, and I know that will fade. 11-42 on rear and 32 up front. Love the dropper post as the descent was fun. Liked the way the bike handled on swithbacks its short chainstay makes it nimble. The funny thing is besides being faster on the climbs Strava had me with 4 trophies downhill, and that was the part I was worried about.

    Thanks for the feedback and am really pleased you enjoyed the new bike and it's improvements
    I took mine out on my local single track
    My observations are as follows;
    It tracks very accurately at the front
    Climbs well
    Probably the biggest surprise was how quickly it picks up speed downhill,it accelerate effortlessly
    My personal debate is as follows
    1x10 or 1x11 (with exception of costs would love to get feedback on differences)
    I think the standard Stans Rapids are heavy and the 2.1 tyres too narrow(thoughts anyone)
    Unless I ride Lycra I think I will get caught behind the saddle
    I think a dropper would be a big improvement,it's just the weight and the cost!
    I can get my hands on a SAVE seat post but that's not going to help my positioning
    I have bought a C1 carbon bars,its in the post
    I also found an SI steerer in the garage which I had forgotten about,it looks much lighter than the standard C3
    Please keep your comments coming
    Cheers
    Steve

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    I can never get 1x10 to shift that well. It's functional, but not great. 1x11 is much easier, at least at my skill level.

    Also, the parts are more standardized for 1x11 than 1x10. As an example, I am one of those weirdos that like Grip Shifters. It's much easier to find a single 11 speed shifter, the 10 speeds shifters are generally sold in pairs (you get the left and right one, 2x10 or 3x10).

    I couldn't get a SRAM GX 10 speed derailleur to work on a 42 tooth gear, only the XT derailleur.

    The Rapids are pretty heavy, I weighed mine without cassette and disk and they were around 2100 grams. My Rovals are more like 1700 with all the same stuff on them.

    I put a Command Post 35mm (yes, 35mm) dropper on mine. It made a huge difference, even that small of a drop. It just allows you to do things like lean the bike over, get behind the seat, etc. The new Command Post is 50mm, I think that would be even better.

    The Command Post is probably the lightest 27.2 dropper around. Rainier makes one that fits, it's 80mm but weighs a lot.

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    I have decided to go XT m8000 11 speed shifter, mech and cassette plus Absolute Black 32 front ring Craig.
    Your advice reflects many other opinions I have gathered.
    Ordered some carbon 38 mm Sixth Element wheels, they get great reviews and I will couple with tubeless 2.35 Rocket Ron on front and 2.25 Rocket Ron on the back.
    I have found two dropper post LEV Integra which is stealth and of course the Thompson Elite but that's external routing.
    Wow just searched the specialised command post, its internal and its light 400g for 50 drop. Its £344
    Did you ride your FSI much with the standard post, did you notice a big difference?
    Cheers
    Steve

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    I rode quite a bit with the stock post, but most of the trails I ride have some sort of downhill or bermy/flowy sections that I enjoy riding on the F-Si. I probably ride it outside of its intended use case, but it's so capable I figure why not?

    The dropper made a big enough difference I didn't mind the weight penalty. That said, for purely XC trails it is probably overkill.

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    I had my bike shop put the Lev Integra on when I bought it so can't comment on a standard post. Once you ride with a dropper you'll never go without. It's worth the extra weight and really its stationary weight so you won't notice it as much. The 2.1 are great climbing, but on the downhill out here in Colorado we have a lot of loose granite so a bigger front tire might be in future. Gotta say with the xt derailleur set up 1x11 it shifts beautiful. The biggest drawback for me and its minor is the cables mounted on frame as opposed to internal, except for one hole in bb for dropper post.

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    After another weekend of riding I switched to my old Giant riser handlebars after my rides. I am hoping this will get me a bit more up-right, after I ride again this week I will update. I am really excited about this bike. ,

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    Hi tjg
    Looking forward to hearing your thoughts after a weekend of riding
    Mine is in the LBS
    XT 1 X 11
    SI 1 X 11 Crank
    C1 Carbon Bars
    LV Internal Dropper Post
    5th Element Carbon Wheels
    2.3/2.25 Racing Ralphs
    Hope to get it back this weekend!!!

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    Another day of riding, put the longer bars on 770mm with a slight rise, much better position on the downhill, we climbed 2000 ft so the climb felt good also. DEFINITELY going with a wider front tire once I get a chance, almost washed out a few times today on crushed granite, really enjoying this rig.

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    Did you shorted the stem at all? I don't mind the narrow bars too much, but the stem is so long that helps with it.

    770mm bars with the stock stem seems like it might feel a bit awkward.

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    Didn't shorten the stem, and I don't think it felt bad, I believe the stock stem is 1.5 inches, I think the shortest I can find is 1.18 inches, is that true?

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    I'm pretty sure the stock one is 100mm. It's difficult to find the data, surprisingly.

    1.5" would be the steerer tube diameter, not the length.

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    I re-measured my stem and it is only 90 mm I then re measured my handlebars and they are only 730 mm so I might try a 60mm stem see if that helps thanks for your clarification

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    730 would be a good width for this bike, I think.

    Your post got me shopping for bars and stems.

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    So with the wider bars and 90mm stem, my neck has been pinching and aching . So, I scheduled a fitting with the LBS I bought the bike from and they took me down to a 60mm stem and tweaked my seat position. After an 18 mile ride today, I gotta say my neck feeks pretty good. You don't think an inch or so on a stem makes a big difference but it does. Will try this new geometry out and report back.

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    Look out with OEM Formula Hub. The axle thread damage drive train dropout making rear wheel disallingment. The brand's answer: it's your fault. The clamp is not tight enough.

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