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Author Topic:   New suspension rules, what to do?
UFnARacing
Member
posted November 22, 2003 11:37 AM
New track this year, so new rules. Must use OEM supension components, but mounting points can be changed. I have a metric with a 9". There are all sorts of ideas going on in my head for the rear suspension, what are some of yours? I might stay with the 4 link and severely modify the pivot points. I may add a panhard and mess with a 3 link type. Not sure yet!



zeroracing
Member
posted November 22, 2003 01:09 PM
rule specifically say no bird cages.


zeroracing
Member
posted November 23, 2003 05:16 PM
Well, my rules say only what I said when I started the post. Stock parts only. I've heard of some people using truck arms. I thought about the 4 link and pullbar. Not really sure which has an advantage, truck arms or 4 link. I believe that with truck arms it would be a 3 link.

Any opinions on that?


zeroracing
Member
posted November 25, 2003 09:11 AM
Am I missing something? The Camaro rear suspension since 1982 utilized a long lift arm and a panhard bar. Two long links at the rear and I think you'd be set to go. Forget the truck arms. That's an asphalt suspension.What you really want is a rear suspension that will promote rear steer and forward bite. Allow the car ro roll up in the corner ans grip off the turns.


UFnARacing
Member
posted November 25, 2003 11:05 PM
So tell me about the camaro set up, I'll admit that I'm not familiar with it. I'm not new to suspension designs, just dirt circle track suspension designs. I'm a desert racing guy, or should I say was.....


robhbk24
Member
posted November 26, 2003 02:42 PM
I don't think I'll have enough room for a long top link. What's the idea behind the longer top link, as compared to a shorter pull bar? I would guess that with this type of setup that you would change the angle of your lower arms to get roll steer, am I right?


robhbk24
Member
posted November 27, 2003 03:29 PM
You could set the angles of the lower arms with the left lower about level and the right running uphill. Then when the car rolled over in the corner the left bar would angle upwards and pull the left rear tire forward, while the right side of the car would go down, pushing the right side of the rear backwards. The link could be bracketed to the lower of the Ford 9"and run upwards to the chassis ie lift bar instead of on the top of the rear end running downhill ie pull bar. I suppose you could connect the panhard to either side of the chassis. There's some debate as to placement of the chassis mount as to the type of surface raced on. I once read a very informative document as to the effect that the location (side to side) has on the rear roll center. Maybe someone here can explain it better. There are some VERY sharp chassis guys on this forum. Hey 66jj-jump on in here!