Page 1 of 2 1 2 LastLast
Results 1 to 10 of 11
  1. Collapse Details
    150cc Hand Built Buggy (Need Help)
    #1
    Post
    Hey Everyone,

    Ive built a buggy in my teenage years from a scooter and parts that i can find.

    It was a 3 wheeler (2 wheels at the front & 1 wheel at the back). I basically slapped in the scooter to the back.

    Now ive pulled it out from the garage and made it a 4 wheeler. Once i sort out everything ill be looking forward to upgrade the motor to something like a GS500 or GPZ500.

    At the moment im working on putting front brakes and trying to solve its bad steering problem.

    While driving it goes in a straight line but as soon as a tyre goes into a small holl or bump it pulls to that side. Im thinking its bump steer but not sure.

    Need some help with this.

    Thanks,







    Attached Images Attached Images
    Last edited by K-fab; 07-22-2017 at 01:59 PM.
    Reply With Quote
     

  2. Collapse Details
    Re: 150cc Hand Built Buggy (Need Help)
    #2
    Member
    Join Date
    Apr 2015
    Location
    west brabant, netherlands
    Posts
    41
    Default
    The bumpsteer is probably becaus the pivot point of your a-arms isnt in line with the pivot point of your steering rack

    Verstuurd vanaf mijn SM-G930F met Tapatalk
    Reply With Quote
     

  3. Collapse Details
    Re: 150cc Hand Built Buggy (Need Help)
    #3
    Default
    Thanks for the reply. Im going to work on that and get it line some how. Would you have a photo as a example for me?
    Reply With Quote
     

  4. Collapse Details
    Re: 150cc Hand Built Buggy (Need Help)
    #4
    Keeper of the Asylum K-fab's Avatar
    Join Date
    Jun 2006
    Location
    Scottsdale, AZ. 10.9 miles from the trailheads
    Posts
    10,436
    Default
    Definitely a bump steer issue along with HUGE scrub radius.

    Read flyerrider's post on front end design and it'll enlighten.
    https://www.minibuggy.net/forum/suspe...uspension.html

    Because you've built a parallelogram front end you'll be able to limit bump steer by moving the inner tie rod mounts out so the tie rods are the same length as the arms but with the massive scrub radius it's going to be a handful to steer and require a lot of input force.
    Reply With Quote
     

  5. Collapse Details
    Re: 150cc Hand Built Buggy (Need Help)
    #5
    Millenium Member plkracer's Avatar
    Join Date
    Aug 2006
    Location
    Monroe Wa
    Posts
    3,598
    Default
    Needs some caster too, to help the wheels want to center.
    Proud owner of a two seat pucker-mobile. Funco inspired mini buggy powered by a Busa. Giving out free rides to anyone brave enough.
    Reply With Quote
     

  6. Collapse Details
    Re: 150cc Hand Built Buggy (Need Help)
    #6
    Default
    Thanks guys. Really appreciate it. Ill update once i got some progress.
    Reply With Quote
     

  7. Collapse Details
    Re: 150cc Hand Built Buggy (Need Help)
    #7
    Millenium Member
    Join Date
    Dec 2006
    Location
    NW Georgia
    Posts
    2,572
    Default
    Post a pic from front center and down low like level w steering. Then we can draw on it.
    Reply With Quote
     

  8. Collapse Details
    Re: 150cc Hand Built Buggy (Need Help)
    #8
    Default
    No worries ill post that asap. Thanks
    Reply With Quote
     

  9. Collapse Details
    Re: 150cc Hand Built Buggy (Need Help)
    #9
    Default
    Reply With Quote
     

  10. Collapse Details
    Re: 150cc Hand Built Buggy (Need Help)
    #10
    Default
    My plan is to give a 8 degree CASTOR and 8 degree KPI.
    Also try to line up the pivot points of the rack with the a arms. What do you guys recommend?
    Reply With Quote
     

Page 1 of 2 1 2 LastLast

Similar Threads

  1. 150cc mini buggy for sale
    By Xbird in forum For Sale
    Replies: 1
    Last Post: 05-23-2015, 02:59 PM
  2. Replies: 3
    Last Post: 06-12-2012, 02:38 PM
  3. New Buggy Builder Help 150cc
    By ElGuapo in forum Motor - Engine
    Replies: 0
    Last Post: 08-11-2009, 01:08 PM
  4. mini buggy 150cc
    By big8balls in forum MiniBuggy.net Lounge!
    Replies: 2
    Last Post: 01-03-2009, 03:51 PM
  5. Hand built Kawasaki 2 stroke radial engine
    By opsled in forum MiniBuggy.net Lounge!
    Replies: 1
    Last Post: 06-15-2008, 07:15 PM

Tags for this Thread

Bookmarks

Posting Permissions

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