Results 1 to 15 of 15
  1. #1
    Mojo MadDuc
    Reputation: MadDuc916's Avatar
    Join Date
    Jan 2009
    Posts
    121

    New BMC Fourstroke with 650B front end!

    Just finished building my new 2009 BMC Fourstroke 02 with 650 B front end. We tried to get the 650B to work on the rear, but we came up about a 1/4 to 1/2 inch short, even with the Quasi Moto, the smallest tire we could find. The build still turned out great, FS bike that rolls obstacles well, accelerates and climbs like mad, and is still nimble in the tight stuff. I have been riding it for a week and the bike is awesome. Plenty of clearance for the 650 B Nevegal in the Fox RLC 120. Just waiting on my Quasi Moto to show up next week to drop some weight, the Nevegal is a great tire but a bit heavy. The Quasi should get the bike to the 25 pound build goal. For those considering the 650 B as an option, try it even if you can only get it on the front, you will see a noticable difference to the positive IMO. Her's ma few pics of the new sled!

    [IMG][/IMG]

    [IMG][/IMG]

    Happy Holidays!!

    MadDuc916

  2. #2
    mtbr member
    Reputation: salimoneus's Avatar
    Join Date
    Oct 2004
    Posts
    1,864
    the Quasi should be a great fit for that bike. how do you like the BMC virtual pivot design?

    very nice build, looks great!

  3. #3
    mtbr member
    Reputation: MMcG's Avatar
    Join Date
    Jul 2003
    Posts
    9,217
    Sweet ride!

  4. #4
    mtbr member
    Reputation: reformed roadie's Avatar
    Join Date
    Mar 2008
    Posts
    1,452
    MD - nice! I have a blur XC and the same set-up. Completely agree...all positives, no negatives. Highly recommend.

    Is that a 2.1 or 2.35 Nev?
    If it is the latter, then maybe downsize vs. go to a Quasi. Then all that's left is to mod it be snipping off alternating transition knobs...that's got to save some grams, and from what I hear makes it a much better front tire.

    Also, on the back, a non-LUST Aspen...not sure what your traction needs are, but it should be lighter and roll better - a good match for a Quasi.

  5. #5
    Mojo MadDuc
    Reputation: MadDuc916's Avatar
    Join Date
    Jan 2009
    Posts
    121

    Good suggestions!

    RR,

    Thanks for the feedback, I appreciate the feedback. I really like the set up, so far no negatives that I can find! I switched the rear tire to a WTB Wolverine. I have the Quasi on order, so I am going to ive it a go and see how it works. I have gotten some positive feedback on the Quasi on the front, so it's worth a try! I'll will post my results in the next few weeks. Are you running your suspension pretty stiff? That seems to be working best for my set up. Post any observations that you might have.

    Happy Holidays!!!

    MadDuc

  6. #6
    TNC
    TNC is offline
    noMAD man
    Reputation: TNC's Avatar
    Join Date
    Jan 2004
    Posts
    12,059
    MacDuc, I personally like the 650B/26 better than any other setup I've tried. The 26 is a great compromise for the rear for longer travel trail bikes. My Nomad and '08 SJ FSR are about as good as it gets for me. The 650B still allows long travel forks with as tall a wheel as possible, while the 26 in the rear keeps acceleration crisp. I also think that too many people put too much emphasis on the alleged headangle tweak. I like the 1/2 degree or so reduced head angle induced by a 650B in front. Aggressive trail riding is a pleasure with this setup...stability without throwing out some sharp handling. My '08 SJ FSR will accept a 650B Neo in the rear, but I'm not going there.

    On the Quasi, it's not my type of tire. It's a good XC application, but I need a more aggressive tread like the Neo. For a decently aggressive tread, the Neo is a fast rolling tire IMO.
    Attached Thumbnails Attached Thumbnails New BMC Fourstroke with 650B front end!-sj-650b.jpg  

    Last edited by TNC; 12-24-2009 at 12:48 PM. Reason: add pic

  7. #7
    mtbr member
    Reputation: reformed roadie's Avatar
    Join Date
    Mar 2008
    Posts
    1,452
    MD - what size is the Nevegal up front?
    How do you like the Wolverine?

    I don't run things overly stiff...no point in making a FS bike a hardtail, right?

    Did you make any adjustments to your position? That made a difference for me after adding the 650b front.

    KP has proto-type soft compound Neos in the pipeline, so I will be all over that.

  8. #8
    Mojo MadDuc
    Reputation: MadDuc916's Avatar
    Join Date
    Jan 2009
    Posts
    121
    RR,


    I have been running the 2.35 Nevegal up front on both the old HT as well at the new BMC. I really like it, I am just hoping see if I can find something that works as well, but it is lighter than the Nevegal.

    So far I am really pleased with the Wolverine as a rear tire. I did another twelve miles today on a new trail with everything from loam, the hardpack, the rock gardens, roots and water. The tire really performs well, might be interesting to try on the front. They are supposedly on the boat now and should be here in the next two weeks.

    I am running the Fox fork with about 15 mm of sag and the RP2 with about 10 mm and keeping it in propedal and the bike is handling everything I have ridden so far. I am gaining more confidense with each ride.

    I did make a few adjustments when I went to the 650B. I moved the seat about 12-13 mm forward, from my old position. I moved the bars down 13mm (see the spacer difference in the pictures). These changes seemed to offset any changes the 650B may have made to the geometry, although, I don't really think it did much to the geometry.

    Please post up when you get the new compound Neo's as well as the size and the weight? I will let you know how the Wolverine works on the front! Look forward to hearing back on the Neo's, have a great week.

    MD

  9. #9
    jrm
    jrm is offline
    mtbr member
    Reputation: jrm's Avatar
    Join Date
    Jan 2004
    Posts
    10,260

    Cant wait

    Quote Originally Posted by MadDuc916
    RR,


    I have been running the 2.35 Nevegal up front on both the old HT as well at the new BMC. I really like it, I am just hoping see if I can find something that works as well, but it is lighter than the Nevegal.

    So far I am really pleased with the Wolverine as a rear tire. I did another twelve miles today on a new trail with everything from loam, the hardpack, the rock gardens, roots and water. The tire really performs well, might be interesting to try on the front. They are supposedly on the boat now and should be here in the next two weeks.

    I am running the Fox fork with about 15 mm of sag and the RP2 with about 10 mm and keeping it in propedal and the bike is handling everything I have ridden so far. I am gaining more confidense with each ride.

    I did make a few adjustments when I went to the 650B. I moved the seat about 12-13 mm forward, from my old position. I moved the bars down 13mm (see the spacer difference in the pictures). These changes seemed to offset any changes the 650B may have made to the geometry, although, I don't really think it did much to the geometry.

    Please post up when you get the new compound Neo's as well as the size and the weight? I will let you know how the Wolverine works on the front! Look forward to hearing back on the Neo's, have a great week.

    MD
    to get my hands on a 650B wolverine.

  10. #10
    Mojo MadDuc
    Reputation: MadDuc916's Avatar
    Join Date
    Jan 2009
    Posts
    121

    Wolverine Pics

    JRM,

    Here are some pics of the Wolverine on the rear, it's a 2.2 so this should give you an idea of the footprint. The rear rim is a Stan's ZTR Flow. Hopefully, we will see the 650B versions soon. I am really jazzed with the tire.







    Post up here if you get your hands on one!

    MadDuc916

  11. #11
    Too easily annoyed.
    Reputation: morgan1819's Avatar
    Join Date
    Dec 2004
    Posts
    294
    Nice bike MadDuc!

    How does the Wolverine 2.2 compare to the Ignitor (or other rear tires you've run)? I've been considering one for my Fourstroke as well.

    Also, do you get the small amount of shock movement/bob when seated (smooth) pedaling that other Fourstroke owners seem to get?

    I run a touch over 20% sag, and get about 8mm or so of 'bounce' when I am on the saddle and gently spinning the pedals. I definitely don't 'feel' power-loss though. I really enjoy how snappy the bike feels when putting the power down.... it's an inspiring climber!

  12. #12
    Mojo MadDuc
    Reputation: MadDuc916's Avatar
    Join Date
    Jan 2009
    Posts
    121

    Wolverine vs Igniter

    Morgan1819,

    I was really happy with the Igniter, I had been runing it for about 8 months on my old HT, before movinbg it to the new BMC. The only drawback was the weight, when I built to new bike I was aiming for a 25 pound build. I tried the Wolverine at the suggestion of my LBS. The Wolverine rolls better than the Igniter, it is definately lighter by half a pound than the Igniter, I am just waiting to see how the sidwalls fair in the rocks here in Austin. I should know more over the next few months. These are the only two tires I have tried on the BMC I just built it a month ago.

    As for the suspension, I have the sag set at 13 mm in the rear on the RP3. I have been running it in Propedal 90% of the time, since I have been transitioning from an HT. I definately notice more bob when I don't run in Propedal. When I run it in Propedal, I am proabably gettin some bob but it's really minimal. I am still getting used to the new 2 x 9 setup. I am spinning more while climbing in the saddle than with the HT and the bike climbs almost as well as the HT. I am very happy with the BMC and would not have a problem recommending it to anyone that is a serious MTB'er. The 650B up front has also really made a big difference, the bike rolls obstacles like mad! If you test any new tires, post up you findings, I am interested to see what other BMC'ers are having success with!

    MadDuc916
    MadDuc916
    2011 Voodoo Canzo 29'er

  13. #13
    mtbr member
    Reputation: reformed roadie's Avatar
    Join Date
    Mar 2008
    Posts
    1,452
    MD - happened to spot Wolverines on sale at REI for $30.
    Picked one up for the rear.
    One ride so far. Hard to judge considering it was 22 degrees (single digit wind chill), and the ground was like concrete.

    It does have a nice volume and rolled well, but again, they were abnormal conditions and nothing you'll ever experience in Texas.

    Oh, btw, it does not hook up on ice...

  14. #14
    Mojo MadDuc
    Reputation: MadDuc916's Avatar
    Join Date
    Jan 2009
    Posts
    121
    RR,

    I rode quite a bit the last several days, so far so good with the Wolverine. I did notice that it does not particularly like wet rocks under power. Ouch! Not sure that there are any tires out there that fit that bill. It does shed mud well and seems to stay planted in the muck, within reason. On the dry stuff I have been very pleased with the performance. Stay warm and stay off the ice!!! I'll post up when the 27.5 version gets here.

    MadDuc
    MadDuc916
    2011 Voodoo Canzo 29'er

  15. #15
    Mojo MadDuc
    Reputation: MadDuc916's Avatar
    Join Date
    Jan 2009
    Posts
    121
    Quasi Moto overview- i just mounted a new Pacenti Quasi Moto front tire this week. I was waiting on a Wolverine 650B, that still has not showed. The Quasi Moto 2.0 is really light at 550 grams with short widely spaced knobs. I was suspect as to how this tire would work as a front tire? I did my first 12 mile ride on Wednesday this week. The little Quasi was a nice surprise. I rode a local trail that has some loamy black dirt as well as lose rock, roots, ledges and some hardpack. The tire handled everything really well, with the exception of fast corners that still had some wet spots. I had some nice two wheel drifts! I am going to play with the air pressure, lowering it a couple of pounds and see how it reacts. Overall, this is a realy good front tire for my application, it rolls well and handles everything I rode without issue. The Quasi is over a 1/2 pound lighter than the Nevegal I was running. I will keep posting as I get more feedback, but if you are looking for a front tire, you might want to consider this tire.
    MadDuc916
    2011 Voodoo Canzo 29'er

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •