Advertise on Bikeforums.net



User Tag List

Results 1 to 7 of 7
  1. #1
    Junior Member
    Join Date
    Apr 2011
    Posts
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    gravity bike: Mtb fork a no-no?

    in all the pictures it seems like people use bmx forks or motorcylce components. are there any downsides to using 20" wheels in a fork made for 24s?

    speed wobbles? height?

    obviously mounting brakes will be a challenge.(actually maybe not! see the mounts on the front fork near the edge of the tire?)



    Uploaded with ImageShack.us
    Last edited by StokedSince88; 06-24-11 at 03:44 PM.

  2. #2
    coasterbrakelockup lz4005's Avatar
    Join Date
    Nov 2004
    Location
    parts unknown
    My Bikes
    surly steamroller w/coaster brake, electra single speed cruiser, specialized rockhopper commuter, no-name single speed folder, 700c ultimate wheel, 24" unicycle, specialized bmx lsd, single seat single speed huffy tandem, pink upsidedown parade bike
    Posts
    825
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I'd think ride height and brakes would be the major problems.
    Ride lots, have fun, skid often!

  3. #3
    Senior Member
    Join Date
    Jun 2010
    Location
    Orangeville, Ontario
    Posts
    382
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    i used 20" tire in forks meant for 26" tire. ever time i have scrapped a set of suspension forks since i usually cut the brake think off so that i could weld them where they would work.
    heres a picture of the forks. you can see the brake system on it fairly easily.

  4. #4
    Junior Member
    Join Date
    Apr 2011
    Posts
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    i just added a pic for reference. it actually appears to have v-brake mounts in approximately the right spot; maybe i won't need to modify anything.

    i'm mostly concerned with how it feels at speed. if anybody has any experience riding one, please chime in. i already expect the handlebars to want to fall away at slow speed, i'm wondering how it will feel cornering while 40+ mph.

  5. #5
    Pwnerer Wordbiker's Avatar
    Join Date
    Jun 2005
    Location
    Pagosa Springs, CO, USA
    My Bikes
    Road, MTB, Cruiser, Chopper, BMX
    Posts
    2,900
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by StokedSince88 View Post
    in all the pictures it seems like people use bmx forks or motorcylce components. are there any downsides to using 20" wheels in a fork made for 24s?

    speed wobbles? height?

    obviously mounting brakes will be a challenge.(actually maybe not! see the mounts on the front fork near the edge of the tire?)



    Uploaded with ImageShack.us
    The biggest problem I see is with smashing your face into the stem.

    Have you considered mounting the grips directly to the fork and using a simple clamp for a top cap?

    Also, if you can arrange the position to use your knees for lifting your body...it could really save your nads.
    Last edited by Wordbiker; 06-28-11 at 12:16 AM.
    Quote Originally Posted by ahsposo View Post
    Ski, bike and wish I was gay.

  6. #6
    Senior Member
    Join Date
    Sep 2008
    Location
    Vista, CA
    My Bikes
    Various, I like to work on bikes restoring and building.
    Posts
    55
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Keep at it brother. You're doing fine.

  7. #7
    Pwnerer Wordbiker's Avatar
    Join Date
    Jun 2005
    Location
    Pagosa Springs, CO, USA
    My Bikes
    Road, MTB, Cruiser, Chopper, BMX
    Posts
    2,900
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Just so you don't think I was mocking you, coasting bikes are something I've given thought to over a very long time. Here's a picture I drew when I was roughly 11-12 years old:



    As kids we used to hitchhike up Chantry Flats road to coast down. After a while we installed rear axle pegs, banana seats so you could lay on your belly, miniBMX bars that were flipped upside-down as clip-ons, and we'd bring a crank puller and a strap to get the cranks and pedals out of the way.
    Quote Originally Posted by ahsposo View Post
    Ski, bike and wish I was gay.

Posting Permissions

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