In exploring some random thoughts, my Google Fu has proven to be weak on this one. I'm looking for a list, or to compile a list, of RWD cars that actually used a 'pure' trailing arm IRS suspension. All that I can think of off the top of my head, or have been able to find, seem to be semi-trailing arms.
the only three I can think of, off the top of my head, are Porsche 356s, pre-68 VWs and the early Corvairs. Even the Fiat 500 (original) used semi-trailing
I believe those are all a form of swing axles. The later torsion bar VW/Porsche IRS is close, but appears to effectively still be semi-trailing arm by a few degrees.
I thought swing axles were the same as trailing arms. It's an IRS setup with a single mounted arm that "trails" from it's mount. If I am right, you can also throw the BMW 700 (the car, not the bike) and the Isetta, though that one is weird as even the twin rear wheeled Isetta only had a single trailing arm that was also the transaxle
Are s30 ('69-'78) Datsun Z's what you are looking for? I know they switched it to what you don't want for the s130 chassis ('79-'83), that was the BarcaLounger IRS.
In reply to mad_machine :
Those swing axles use the axle as the other arm, with the pivot in by the diff, functionally similar to an extreme semi-trailing arm... The opposite extreme of what I'm looking for.
Trailing arm is exactly like semi-trailing arm, with the axles not providing any motion control, except with both pivots in alignment transversely across the chassis.
A semi-trailing arm style swing axle has both significant camber gain and toe change in bump. A true trailing arm on the other hand experiences zero camber gain or toe change in bump.
In reply to Trackmouse :
S30 used struts on all four corners.
Corvair?
in that case, the only trailing arm cars I can think of are FWD. the 2CV being an extreme example
Are you looking for something like a DeDion tube suspension?
Honda 600S has a pure trailing arm rear drive suspension. Swing axle cars are semi trailing arms-the pivot of the swing is the inboard pivot of the trailing arm or in line with the inboard pivot..
Porsche used a trailing and leading arm suspension on the RSK. It functioned the same as a Watt link.
Does truck arm meet that ?
Jaguar IRS?
In reply to volvoclearinghouse :
Jag IRS isn't trailing arm, it's double a-arm (the axle shaft functions as the upper locating link). That goes for both the early inboard brakes version and the later outboard brakes version.
In reply to rslifkin :
You are correct. It was early, and I hadn't yet had my coffee.
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