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Old 02-06-2019, 01:12 PM   #1
EPS3
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Toe-out on turns

I'm hoping one of the experts on C10 trucks here can help me out.
I'm considering using a front steering Chevy C10 cross member (or at least control arms) on my 1937 Buick Hot Rod.
An old hotrodder on a different website conveyed the following warning:
"The Chevy C10 steering assembly doe have a minor fault with its design. The problem is that most of them do not produce enough toe-out on turns. Here is and example; if you were to turn the left wheel 20 degrees, the right wheel should turn 22.5 to 23 degrees. Most C10's won't do that but otherwise they will last forever."
Does anyone know if this true of all C10 years?
Is there a fix that can be made with set-up to correct this?
I apologize if this has already discussed, but did not see a reference when I searched the topic.
Thanks
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Old 02-06-2019, 01:54 PM   #2
rpmerf
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Re: Toe-out on turns

I believe what you are referring to is Ackerman angle.

https://en.wikipedia.org/wiki/Ackerm...ering_geometry
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Old 02-06-2019, 03:29 PM   #3
EPS3
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Re: Toe-out on turns

Quote:
Originally Posted by rpmerf View Post
I believe what you are referring to is Ackerman angle.

https://en.wikipedia.org/wiki/Ackerm...ering_geometry
OK that makes sense.
Thanks for your help.
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Old 02-06-2019, 03:39 PM   #4
wilkin250r
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Re: Toe-out on turns

I'm not sure I would worry too much about the Ackermann geometry. At slow speeds, it's not a danger because, well, you're going slow. At high speeds, the slip angle of the outside wheel becomes much more significant, and any designed Ackermann geometry goes out the window.

I think the other aspects of your steering geometry would have a much larger impact, like camber, caster, and scrub radius.

I couldn't tell you specifics about the C10, however, my experience with steering geometry comes from racing sport quads.
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Old 02-06-2019, 04:08 PM   #5
EPS3
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Re: Toe-out on turns

Quote:
Originally Posted by wilkin250r View Post
I'm not sure I would worry too much about the Ackermann geometry. At slow speeds, it's not a danger because, well, you're going slow. At high speeds, the slip angle of the outside wheel becomes much more significant, and any designed Ackermann geometry goes out the window.

I think the other aspects of your steering geometry would have a much larger impact, like camber, caster, and scrub radius.

I couldn't tell you specifics about the C10, however, my experience with steering geometry comes from racing sport quads.
Thanks for the feedback
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