Quote:
Originally Posted by ERA2076
... A rule of thumb is to run the longest virtual swing arm you can...
chr
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When we first started out, we did tire testing with BF Goodrich. (Back then the CompTA was the hot tire.) It was their recommendation that we shorten the virtual swing arm length in order to increase the camber gain. Street tires haven't changed that much since then. We're still using the same sizes and profiles in 15" sizes. The profile of 17" wheels is somewhat different, but the tires still require some camber correction on roll.
Formula cars are different. Roll is negligible and tires are very wide. For them, roll compensation is neither necessary nor desirable.
On our cars, you could run a lot of negative camber, but that has negative consequences on tire wear and loss of traction of the inside tire. We're still better off with the compromise of some partial camber gain on roll.
Or you could put in springs so stiff that roll would be near zero, and bounce down the road from hump to bump.