chapman strut/ mac ferson strut rear suspension
chapman strut/ mac ferson strut rear suspension
(OP)
I intend to use a strut-type suspension in the rear of a car. This is (initially) the engine/trans/suspension from the front of a full size GM car (3.8 + 4-speed automatic)
Will the software suggested for SLA suspensions help with this? How sensitive might this be to tilt of struts, either inward or forward/aft?
What about A-arm pivots- horizontal, or axis tilted forward/back?
Initially I intend to just lock the steering rack in a centered position, later replace with hard point mountings for the (formerly steering) links.
Comments? hazards? show-stoppers?
regards
Jay
Will the software suggested for SLA suspensions help with this? How sensitive might this be to tilt of struts, either inward or forward/aft?
What about A-arm pivots- horizontal, or axis tilted forward/back?
Initially I intend to just lock the steering rack in a centered position, later replace with hard point mountings for the (formerly steering) links.
Comments? hazards? show-stoppers?
regards
Jay
Jay Maechtlen
RE: chapman strut/ mac ferson strut rear suspension
I'd be inclined to keep the A arm square to the strut in side view, and rotate the whole thing about the Y axis to get antidive or prodive.
I don't know about show stoppers, this has been done many times in the past. I'm a bit of a cynic about rear suspensions, so far as I'm concerned they mostly seem to just follow the front around.
Cheers
Greg Locock
RE: chapman strut/ mac ferson strut rear suspension
<chortle>
thanks for the info!
jay
Jay Maechtlen
RE: chapman strut/ mac ferson strut rear suspension
Norm
RE: chapman strut/ mac ferson strut rear suspension
It may be appropriate to soft mount the rack, or make one of the bushes soft, depending one where the rack is relative to the bushes. It is easiest to think about those suspensions which have a lateral arm parallel to the tie rod, and then a leading or trailing link, which can be ignored.
For instance, if the rack is in front of the axle then softening the bush on the lateral arm gives understeer at the front axle. So if you fitted the suspension the same way round in the rear, you'd want to soft mount the rack, to get compliance oversteer on that axle, or vehicle understeer.
And you ALWAYS want compliance understeer, I think.
Cheers
Greg Locock