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FrontEngineDragsters.Org Forum
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Front Engine Dragsters
(Moderator:
GlennLever
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Front tire wobble fed
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Topic: Front tire wobble fed (Read 3388 times)
Aludigger18
Newbie
Posts: 3
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
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Paul New
Hero Member
Posts: 743
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
»
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THE FRENCHTOWN FLYER
Sr. Member
Posts: 360
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
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Paul New
Hero Member
Posts: 743
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?
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BK
Sr. Member
Posts: 310
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.
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Aludigger18
Newbie
Posts: 3
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
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Front Engine Dragsters
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Front tire wobble fed