Quote:
Originally Posted by ludo
it doesn not make a big difference for a track car? (based on what we see here on lotus seven replica)
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Setup on IRS is extremely critical, I have reworked a few IRS equipped cars where the original geometry was so bad that they go into a bind situation under any power or cornering loads, which in turn makes them absolute pigs to drive and gives the IRS & car a bad reputation. However once cured [ it often only requires a small shift of a pickup point or two ] and dialed in a solid rear axle car wont get near it.
However if your starting from scratch & $$$ are an issue then a well setup 9" 3 bar plus watts link will return good results. Really comes down to personal preference.
Dont know what availibility of Toyota/Nissan stuff is like in France, but Nissan 300zx or Toyota Supra from around the mid 90's have real strong IRS rear ends with Torsen type Limited Slip & ratios in the 3.7 range. Very strong-230mm(9") ring gear, big vented brakes, hub carriers, large CV joints, both Ford Stud pattern @ 4.5" x 5----everything you need if you wish to fabricate your own IRS setup.