Rear Suspension Type Ideas

[Bryce]

A torque arm will have a limit to the upper range of the antisquat. Based on the geometry it may end up above the transmission. Thats if you need that much A/S.
Depending on link lengths you can have limited A/S change during suspension travel and limited pinion angle change. With a 3-link you can have a long SVSA, maybe even longer than a Torquearm.



But if you want to keep the rear seat your only choice is a really short length UCA with a 3-link or you need to go with a TA to reduce the compromises with suspension geometry.

If you were building a falcon (i think you are from a previous thread) you can get a much longer UCA than you can package into a 65 mustang.

Without cutting into the rear seat i can get at least a 14" UCA. Twice the lenght of a new mustang and longer that EVM 3-link designed for the 65 mustang.

[DynoDon]

Thanks guys, keep the ideas and theories coming. Plenty to think about and I appreciate the input

[exwestracer]

Thanks guys, keep the ideas and theories coming. Plenty to think about and I appreciate the input

Don, couple other things to consider about 3-link type suspensions in a unibody chassis...

The links always exert force along their own axis (push or pull) so the upper link must be adequately braced front to rear. Many of the versions out there punch through the floor or add a mount above the tunnel. This area was never designed to carry that sort of load. The rear floor behind the seat is basically a big, mostly flat, panel...

Also, any sort of side angle built into the upper link will cause binding in the rear suspension. As the upper link goes into tension under power, it tries to straighten it's own load path, which pulls the housing sideways and binds the lateral locator. This was a lesson hard learned for me, as I chased this problem for 5 seasons on a supermodifed. I bring this up because I see them built this way every once in awhile. It may be convenient for packaging, but it doesn't work with big hp and big tires.

[DynoDon]

and longer that EVM 3-link designed for the 65 mustang.

Went to look at the EvM system and it appears that they closed the business.