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Originally Posted by skyking
Your'e obsessed with posting about lift. Is it because you've got the instrumentation to measure it?
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I can measure changes in drag and panel pressures too, and I often write about those as well.
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In the realm of economic driving, the destabilizing effects lift are not an issue. Neither is adding downforce.
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Unless you never exceed 80 km/h, not true.
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What we care about here is drag. We do indeed measure it with adding mods, then doing tuft testing, A-B-A testing, coast down tests. Long term gathering of data over the same ground, day after day.
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Well, any coast down testing that you can perform on a normal road is quite invalid - it's one of the things that Aerohead states here that is right. I am not sure what your point is with your other tests - they're great!
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We don't have many million dollar wind tunnels.
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Neither do I - I am not sure of your point.
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In the speed ranges in question, measuring lift is a roundabout way of measuring a component of drag.
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That does not appear to be the case. An example is the Porsche Taycan that has lower drag at higher lift (ie spoiler down).
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It is by no means the source of all drag. Not even close.
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I've never suggested that is the case
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I suggest you climb down off your well beaten dead high horse and try participating in a civil manner.
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Well, the 'civil manner' of the group has allowed complete misconceptions and erroneous advice about car aerodynamics to flourish for a long time. Might be a bit better if BS is called out and not brushed under the carpet.
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You have a great deal to add here. Try adding it and not contesting every other thing you see.
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I contest only misconceptions, errors and misleading advice. Unfortunately, there is a lot of it.