Quote:
Originally Posted by JulianEdgar
If we could road test with accuracy down to 0.6 per cent drag variation then it would be fantastic - but based on the tech lit and my own testing, I don't think that's possible.
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Considering wind tunnels aren't that close then I think it is impossible without compensating for all sorts of variables such as barometric pressures, instantaneous windspeeds, road surface temperatures, passenger weight changes, tyre temperatures, thrust generated by cooling fans etc. . I don't know what those factors add up to but I would guess at more than 0.6% on a day to day basis.
Maybe the changes would have less total effect if the tests were repeated immediately and many many times on many days with random A-B testing with a driver that doesn't know what they are testing.