Thread: Parallel or triangulated 4 bar, which is best?

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I have triangulated 4 bar now and intend to keep it, was built that way 40+ years ago using coil springs. However I now have exhaust running all the way to the back and indeed the triangulated has made for some tight fits. I am thinking of replacing the coil springs with coil over shocks. Opinions?

Jack.

I chose the 4 bar simply to have some added room under my 'A' chassis for exhaust. When I was all done - wouldn't have made much if any difference. My preference and what I would have chosen for sure had I used a '32 chassis for my car would be the triangulated set up. As far as what works better on a street driven car - toss up as far as I'm concerned

Originally Posted by IC2

My preference and what I would have chosen for sure had I used a '32 chassis for my car would be the triangulated set up.

Thanks to all for your replies.

Dave, if you don't mind me asking, why would you use triangulated 4-bar over parallel 4-bar on a '32 chassis, is that what's on your 'A' chassis? That's the type of answers I'm searching for, why would someone choose one style over the other. BTW, I have a TCI Stage III IFS chassis also.


I'll tell you one of the things mentioned in the debate that I found troubling. One of the guys said that a parallel 4-bar equipped chassis is more susceptible to getting into a 'death wobble' type of motion at speed and the only way to stop it was to slow down cautiously. I've experienced a death wobble on a motorcycle before, it's a very scary feeling especially when you're only on 2 wheels!! Has anyone else heard of or experienced this in a parallel 4 bar chassis set-up? (Please no replies about other motorcycle experiences, let's try to stay on topic)

Thanks again,
Mike