Re: Caster questions and bumpsteer
[Re: BergmanAutoCraft]
#1322607
10/19/12 06:01 PM
10/19/12 06:01 PM
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Joined: Feb 2011
Posts: 4,302
Nebraska
72Swinger
master
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master
Joined: Feb 2011
Posts: 4,302
Nebraska
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I'd like to know at what point caster "corrects" bumpsteer or negatively affects it. I havent measured by bumps steer but im only running 5.8 degrees pos caster. There is a reply Peter, but no answer.
Mopar to the bone!!!
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Re: Caster questions and bumpsteer
[Re: BergmanAutoCraft]
#1322612
10/20/12 09:31 AM
10/20/12 09:31 AM
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Joined: May 2012
Posts: 841
Santa Fe Springs, CA
Dan@Hotchkis
super stock
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super stock
Joined: May 2012
Posts: 841
Santa Fe Springs, CA
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Quote:
I think you misunderstood me. I am a shop and have an alignment rack avail to me and all home alignment tools too.
I asked for people's experiences with running camber in the 8 degree range like modern cars. Secondly, I asked what have been experiences in correcting bumpsteer. Spacing the outer tie rod is normal I know, but wanted some feedback from others.
Steve hit it right on the head, it will change on an unnoticeable level from car to car unless something is seriously out of whack. Steve was also correct in mentioning that almost all of the bumpsteer can be corrected by use of the shims we provide in the kit finding the "sweet spot". No shimming of the steering gear is required, but as you get the toe dialed in, be mindful of your ackerman, which most don't pay any attention to. On extremely tight courses, I may toe out the Road Runner as much as 1/4" a side. The car will feel REALLY sloopy on turn in, but cornering characteristics will be really good. Its all a bit of give and take. While our kits greatly improve the suspension, short of a complete redesign, it can only get so good.
Sorry about the delayed response BTW, I was busy at Buttonwillow.
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Re: Caster questions and bumpsteer
[Re: BergmanAutoCraft]
#1322613
10/20/12 09:49 AM
10/20/12 09:49 AM
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Joined: Jan 2003
Posts: 27,480
So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,480
So Cal
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Quote:
I think you misunderstood me. I am a shop and have an alignment rack avail to me and all home alignment tools too.
I asked for people's experiences with running camber in the 8 degree range like modern cars. Secondly, I asked what have been experiences in correcting bumpsteer. Spacing the outer tie rod is normal I know, but wanted some feedback from others.
Ok.That's more clear for me.
You are looking for bumpsteer numbers at/or around 8 degrees caster.
In my situation, I could not decrease the shims more more than what I had in there now. But, I don't think those bump steer numbers were that bad. I'm at only at 1/16" toe out at 3" full compression.
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Re: Caster questions and bumpsteer
[Re: dangina]
#1322616
10/20/12 12:17 PM
10/20/12 12:17 PM
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Joined: May 2012
Posts: 841
Santa Fe Springs, CA
Dan@Hotchkis
super stock
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super stock
Joined: May 2012
Posts: 841
Santa Fe Springs, CA
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Quote:
Hey Steve and Dan, you talk about I using shims which lower I know lower the Tue rod down, what thickness of shims are you using? And are either of you using dropped spindles? ? I know that I may have to go with some bigger shims as I have read that bump steer is increased with the use of dropped spindles
No use of dropped spindles, just factory. The kit comes with about 1/2" worth of shims and a special spacer so the bolt doesn't walk around in the tapered hole.
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Re: Caster questions and bumpsteer
[Re: Dan@Hotchkis]
#1322617
10/20/12 12:32 PM
10/20/12 12:32 PM
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Joined: Nov 2008
Posts: 1,491
Lethbridge, AB, Canada
dangina
pro stock
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pro stock
Joined: Nov 2008
Posts: 1,491
Lethbridge, AB, Canada
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Quote:
Quote:
Hey Steve and Dan, you talk about I using shims which lower I know lower the Tue rod down, what thickness of shims are you using? And are either of you using dropped spindles? ? I know that I may have to go with some bigger shims as I have read that bump steer is increased with the use of dropped spindles
No use of dropped spindles, just factory. The kit comes with about 1/2" worth of shims and a special spacer so the bolt doesn't walk around in the tapered hole.
Which kit are you guys using? I have the Howe tie rods and it came with a 1/2" spacer , no shims
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Re: Caster questions and bumpsteer
[Re: dangina]
#1322618
10/20/12 12:52 PM
10/20/12 12:52 PM
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Joined: May 2012
Posts: 841
Santa Fe Springs, CA
Dan@Hotchkis
super stock
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super stock
Joined: May 2012
Posts: 841
Santa Fe Springs, CA
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Quote:
Quote:
Quote:
Hey Steve and Dan, you talk about I using shims which lower I know lower the Tue rod down, what thickness of shims are you using? And are either of you using dropped spindles? ? I know that I may have to go with some bigger shims as I have read that bump steer is increased with the use of dropped spindles
No use of dropped spindles, just factory. The kit comes with about 1/2" worth of shims and a special spacer so the bolt doesn't walk around in the tapered hole.
Which kit are you guys using? I have the Howe tie rods and it came with a 1/2" spacer , no shims
http://www.hotchkis.net/mopar_adjustable_steering_rod_kit.html
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Re: Caster questions and bumpsteer
[Re: BergmanAutoCraft]
#1322619
10/21/12 03:16 AM
10/21/12 03:16 AM
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Joined: Jan 2003
Posts: 27,480
So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,480
So Cal
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Quote:
How come Steve's bumpsteer chart suggests moving the inner tie rod down? That's the opposite of what the kit with the spacers in the outside does.
I'm pretty wiped out right. I'll go back at my notes tommorrow. Just got done doing the Fall Fling show here setting up show grounds on Friday and working the show all day.
IIRC, I referenced a bumpsteer guide from the Longacre website. My bumpsteer gauge is a Longacre.
IIRC, by the guide the tie rods needed shims removed. But the tie rod end was allready at the least amount and there were no adjustment shims left to take out.
I felt that ~1/16" of toe out at a full 3" of compression (0.082") was not that much.
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