Advertise on Bikeforums.net



User Tag List

Results 1 to 12 of 12

Thread: 650c up front

  1. #1
    Senior Member FakeFuji's Avatar
    Join Date
    Nov 2011
    Posts
    630
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    650c up front

    No, I don't want to do barsp1nz, my fork and front wheel were recently destroyed and I was wondering if anyone who had switched their front wheel out for a smaller(650) wheel up front would want to chime in with any ups and downs of this

  2. #2
    yoked homebrewk's Avatar
    Join Date
    Jan 2011
    Location
    St. Louis
    My Bikes
    Cannondale CAAD10, Trek Earl, Schwinn Gateway
    Posts
    3,696
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You can't use a front brake with a standard 700c fork.

  3. #3
    Quirky Grifter LesterOfPuppets's Avatar
    Join Date
    Sep 2008
    Location
    Vancouver, USA
    My Bikes
    My War
    Posts
    20,131
    Mentioned
    43 Post(s)
    Tagged
    7 Thread(s)
    I've run 26" up front, 700c in back. Makes HTA and STA steeper and BB lower.

    How well it works will depend on how steep your bike's stock angles are and how much steeper you like them.

    If you're good with Trig you can calculate what the new angles will be on paper.

    EDIT: Oh, yeah, I have Mega long reach calipers to run 26 on that bike. You'll need so slide your brake pads down about 25mm to reach your new rims. Probably gonna have to shop for long reach brake if you really wanna do this.

    I should also add you can run a fatter tire on the front to minimize the steepening and BB lowering effects. Seems like a silly way of going about things unless you get a 650c wheel for free, however.
    Last edited by LesterOfPuppets; 12-03-11 at 06:15 PM.
    1980ish Free Spirit Sunbird fixed * 1996 Mongoose IBOC Zero-G * 1997 KHS Comp * 1990-ish Scapin * Lemond Buenos Aires Triple

  4. #4
    Senior Member FakeFuji's Avatar
    Join Date
    Nov 2011
    Posts
    630
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    my fork is trashed also so I'd get the fork to match

    edit: BB height is the only thing that has me nervous

  5. #5
    Painfully average. calv's Avatar
    Join Date
    Jun 2010
    Location
    Oakland/Davis, CA
    My Bikes
    all city mr pink
    Posts
    2,536
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Might as well get a proper fitting fork and wheel. 650c up front = bad idea.
    Quote Originally Posted by ThisJauntyGent View Post
    The stories about the smell are absolutely true: straight elephant dick.
    All City Mr Pink

  6. #6
    Brown Bear, Sqrl Hunter Jaytron's Avatar
    Join Date
    Jul 2009
    Location
    San Jose, CA
    My Bikes
    CAAD 10 4, Dolan DF4, Fuji Track Classic
    Posts
    4,292
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I can't think of many "ups" to this.
    PedalRoom

    Hey I just met you,
    and this is crazy,
    but here's my Strava,
    follow me maybe.

  7. #7
    yoked homebrewk's Avatar
    Join Date
    Jan 2011
    Location
    St. Louis
    My Bikes
    Cannondale CAAD10, Trek Earl, Schwinn Gateway
    Posts
    3,696
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Jaytron View Post
    I can't think of many "ups" to this.

  8. #8
    Just smang it. EpicSchwinn's Avatar
    Join Date
    Feb 2011
    Location
    Spokane
    My Bikes
    '88 Trek 2300 Composite, '11 Dawes Deadeye
    Posts
    2,233
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    If you're not doing barspins there aren't really any practical benefits to putting a 650c wheel on a frame that wasn't designed for it. There are a number of frames built to have staggered wheels like that but they have amply high bottom brackets. I think theoretically on the bikes designed for a 650 up front there are aerodynamic and weight advantages. Those benefits would be outweighed on a frame that's not meant for it. IIRC, they don't allow 2 different wheel sizes in racing anymore anyway.

  9. #9
    Brown Bear, Sqrl Hunter Jaytron's Avatar
    Join Date
    Jul 2009
    Location
    San Jose, CA
    My Bikes
    CAAD 10 4, Dolan DF4, Fuji Track Classic
    Posts
    4,292
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by homebrewk View Post
    PedalRoom

    Hey I just met you,
    and this is crazy,
    but here's my Strava,
    follow me maybe.

  10. #10
    yoked homebrewk's Avatar
    Join Date
    Jan 2011
    Location
    St. Louis
    My Bikes
    Cannondale CAAD10, Trek Earl, Schwinn Gateway
    Posts
    3,696
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by homebrewk View Post
    You can't use a front brake with a standard 700c fork.
    ...but who needs a brake anyway?

  11. #11
    Senior Member
    Join Date
    Jan 2005
    Posts
    1,299
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    will totally screw up the geometry, handling and aesthetics of the frame. what else do you need to know?
    Quote Originally Posted by politely removed
    I am ****ing devoted too. I am moving into my friend's closet just so I can save up for bike stuff.
    well, here's some for you! everything's for sale...

  12. #12
    Senior Member
    Join Date
    Jun 2010
    Posts
    67
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    The major issue with it though is it will f**k up the trail of your bike

    it'll handle obnoxiously twitchy, and will discourage you from riding fast.

    that being said, ive had a bike with a 650c front, and didn't mind it by any means for my around town beating, and it made my bikes angles a bit more attractive.

Posting Permissions

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