[JulianEdgar]

Originally Posted by aerohead

Take it up with Hucho. I haven't shared anything that he didn't publish. You're a 'writer' okay. You just haven't mastered reading for comprehension. You should be correcting me scientifically, out of the same book the we share.
Since you don't or won't. what am I to think?
You can't present a logical, linear, coherent argument to defend your belief system while overturning Hucho's ground rules for fluid mechanics.
I suppose you also argue female anatomy with God.
You're a funny fellow. Indeed.

You haven't addressed any of my points - understandable of course when you show such grave misunderstandings of the topic.

So, let me restate them:

First faulty premise: if the shape curves downwards faster than The Template, flow separation will occur.

Second faulty premise: if the shape curves downwards faster than The Template, flow separation will occur and therefore low pressures - and so lift - are due to separation.

Third faulty premise: rear spoilers reduce lift by 'reaching up' to the streamline that would have occurred had 'The Template shape premise' (ie Premise 1) been true.

(To be fair, the third faulty premise is faulty only on cars with attached flow. Where separation occurred at the end of (say) the roof on a sedan of the 1960s, this was a valid idea [just not with The Template as the demarcator] and certainly not with cars of the last 30-odd years.)