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Not enough caster
#1838988
06/01/15 06:36 PM
06/01/15 06:36 PM
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Joined: Mar 2007
Posts: 181 Stow,Ohio
RBSat66
OP
member
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OP
member
Joined: Mar 2007
Posts: 181
Stow,Ohio
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Put a disc brake conversion kit that came with spindles on my 66 Satellite, went to get a front end alignment and was told that they can't get enough positive caster. they want 3 degrees positive and can't get any more than 3 degrees negitive. Any ideas?
Last edited by RBSat66; 06/01/15 06:37 PM.
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Re: Not enough caster
[Re: RBSat66]
#1839824
06/02/15 04:14 PM
06/02/15 04:14 PM
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Joined: Jan 2003
Posts: 27,468 So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,468
So Cal
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I use two boxes (4 bushings) and get 2.5 degrees to 4 degrees of positive caster.
The one I could only get about 2.5 degrees positive was a hemi dart clone with a spacer between the K-frame to chassis and very high ride height.
The cars with over 3 degrees were lower and did not have the thicker than stock inside poly strut bushings in them. Any of you running poly strut rod bushings?
But back to original poster, only 3 degree negative sounds like something is messed up. Have you done alignments on this car before the disc conversion?
Do you have pictures of where your UCA cam eccentrics are positioned right now?
Picture below is from passenger front wheel well. Picture on right is the front upper control arm eccentric.
Last edited by autoxcuda; 06/02/15 04:18 PM.
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Re: Not enough caster
[Re: autoxcuda]
#1839938
06/02/15 07:05 PM
06/02/15 07:05 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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What Autox said, 4 boxes & politely make sure he knows how to install em to get max caster not max camber like they're marketed for. If that ain't enough ((caster) when done then as said the custom arms but I think you'll get there with those bushings EDIT 2 boxes & they have 2 bushings ea
Last edited by RapidRobert; 06/02/15 10:08 PM.
live every 24 hour block of time like it's your last day on earth
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Re: Not enough caster
[Re: RBSat66]
#1840319
06/03/15 08:53 AM
06/03/15 08:53 AM
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Joined: Jan 2003
Posts: 9,997 Frostbitefalls MN (Rocky&Bullw...
gregsdart
master
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master
Joined: Jan 2003
Posts: 9,997
Frostbitefalls MN (Rocky&Bullw...
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No expert here, but is the back of the car raised? Messing with a suspension can create bump steer problems. When a car is raised in the back, then adjustments made to get caster back to desired amount, the bump steer goes out of whack. I have done two custom suspension builds and can say for a fact it doesn't take much to create a problem.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Not enough caster
[Re: gregsdart]
#1840645
06/03/15 05:01 PM
06/03/15 05:01 PM
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Joined: Jan 2003
Posts: 27,468 So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,468
So Cal
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No expert here, but is the back of the car raised? Messing with a suspension can create bump steer problems. When a car is raised in the back, then adjustments made to get caster back to desired amount, the bump steer goes out of whack. I have done two custom suspension builds and can say for a fact it doesn't take much to create a problem. My car is not raised in the back. But I have a lot of caster, 5+ degrees. I have put my car on a Longacre bump steer gauge and have very good bump steer.
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Re: Not enough caster
[Re: RBSat66]
#1840653
06/03/15 05:16 PM
06/03/15 05:16 PM
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Joined: Jan 2003
Posts: 27,468 So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,468
So Cal
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Put a disc brake conversion kit that came with spindles on my 66 Satellite, went to get a front end alignment and was told that they can't get enough positive caster. they want 3 degrees positive and can't get any more than 3 degrees negitive. Any ideas? 3 deg neg caster is not even close to stock spec for manual steering. And stock spec for power steering is something like 0 to 1 positive. Something is the wrong part, bent, or else.
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