Quote:
Originally Posted by aerohead
Maybe we'd be better off without reading and writing altogether. It only seems to lead to trouble.
And think of all those silly meteorologists! What a bunch of losers they must be. Thinking they could actually figure anything out by looking at all those isobars, temperatures, winds, and other worthless stuff. Have you ever gone up in space to see if those weather satellites are actually up there?
Ratios! Who the ---- thought up that ----? The work of the devil I tell you!
When my fund manager invests on Wall Street, they never look at any of those useless statistical trends.
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The point is though, an overpaid fund manager can't predict things even given all the data, only a few percent outperform the market over 20 years. Data is useful, but sometimes you can't draw accurate conclusions from it.
only a few weeks ago you were saying that you might not notice a 30% drop in aero drag due to gearing, yet now you are saying 10% is easily noticeable. I trust modern science that supersedes and is more accurate than something that may have worked 20 years ago with tyres of that era and aerodynamics of that era on the specific and limited set of cars that they tested in that era.
To test your theory I put the numbers in for a 1970 lotus europa, 700kg 0.008 Crr, 1.51m^2 frontal area, 0.29 Cd. At 70mph it gets 49.4USMPG according to the calculator. With a 10% Cd reduction it gets 54.0USMPG. That suggests 10%=10%, maybe rules of thumb don't work?