« previous next »
Pages: [1]   Go Down

Author Topic: Front tire wobble fed  (Read 3341 times)

Offline Aludigger18

  • Newbie
  • *
  • Posts: 3
    • View Profile
  • Your Best Time: 7.29
  • Your Engine: Chevy BB 496 blown alky
  • Your Track: Gardermoen raceway
  • Your Vehicle: FED
  • General Location: Eastfold
Front tire wobble fed
« on: July 14, 2020, 04:32:48 AM »
I have a problem with my front end.
Every time I use my breaks to stop,the front wheels start to wobble
Like after the burnout.
My caster angle is 16 degrees
Is the angle to little?
17" Front-wheel
The fed is 190" long with a blown big block
Logged

Offline Paul New

  • Hero Member
  • *****
  • Posts: 743
    • View Profile
  • Your Best Time: 6.47 @ 214 MPH SBC
  • Your Engine: 387" SBC
  • Your Track: Woodburn Dragstrip
  • Your Vehicle: 2005 FED
Re: Front tire wobble fed
« Reply #1 on: July 14, 2020, 08:11:02 AM »
I changed my car from 28 to 15 degrees as per recommendation from Frank Parks and my car drive like a dream went 212MPH.  My car drove good at 28 but was a bitch turning off at the top end. 

Have you checked your king pins and heim joints for slop?
« Last Edit: July 14, 2020, 09:26:46 AM by Paul New »
Logged

Offline THE FRENCHTOWN FLYER

  • Sr. Member
  • ****
  • Posts: 360
    • View Profile
  • Your Best Time: 8.28@168 door; 9.00@147 6-cyl alt; 8.53@160 RED
  • Your Engine: 300 Ford six NA w/ crossflow and prod. heads
  • Your Track: Milan, Thompson
  • Your Vehicle: (3) Advanced Chassis altered , The Last Logghe altered, '30 RPU
  • General Location: North Coast
Re: Front tire wobble fed
« Reply #2 on: July 14, 2020, 02:39:03 PM »
Two suggestions:

Take some more caster out.
Add a steering damper, like a Fiero unit.   https://www.fierostore.com/Product/Detail.aspx?s=58026&d=324&p=1
Logged

Offline Paul New

  • Hero Member
  • *****
  • Posts: 743
    • View Profile
  • Your Best Time: 6.47 @ 214 MPH SBC
  • Your Engine: 387" SBC
  • Your Track: Woodburn Dragstrip
  • Your Vehicle: 2005 FED
Re: Front tire wobble fed
« Reply #3 on: July 21, 2020, 07:52:18 PM »
Have you figured anything out?
Logged

Offline BK

  • Sr. Member
  • ****
  • Posts: 310
    • View Profile
  • Your Best Time: 8.45 / 5.30
  • Your Track: Empire Dagway
  • Your Vehicle: Late 70's FED
Re: Front tire wobble fed
« Reply #4 on: July 22, 2020, 10:22:37 AM »
If you could add a few degrees of caster easily it couldn't hurt.
The other thing you could check is toe in.
Make sure to spread the front or pull the back of the wheels together to make sure any play cant go past your setting.
Logged

Offline Aludigger18

  • Newbie
  • *
  • Posts: 3
    • View Profile
  • Your Best Time: 7.29
  • Your Engine: Chevy BB 496 blown alky
  • Your Track: Gardermoen raceway
  • Your Vehicle: FED
  • General Location: Eastfold
Re: Front tire wobble fed
« Reply #5 on: August 12, 2020, 08:38:40 AM »
I have adjusted the caster 21 degrees, so I’m going to try it out at the race i a few weeks
Thanks for the reply’s
Logged
Pages: [1]   Go Up
« previous next »