The CoT's rear wing...

[Mike/Speeed]

sure makes spinouts exciting, huh?
I'm surprised Kurt Busch made it all the way around the track backwards
without being thrown into the fence...

[Rod's work news]

All they need is a pyramid shaped "spoiler". It yields downforce in both
directions ......... and needn't extend beyond the rear edge of the rear
deck lid. And such a shape could certainly still include endplates/winglets
for lateral stabilizing.

I'm not sure what that shape imposes wrt drag, but it certainly is not a
terrible_case scenario. And if they allowed a spoiler of that general shape
(with, for example, pitch tolerances that allowed teams to play with it
within predetermined allowable specs), it would help keep the rear end down
when a car turns around.

"Mike/Speeed" <speeedra...@verizon.net> wrote in message
news:hn3bbe$5j6$1...@news.eternal-september.org...

[John McCoy]

"Rod's work news" <rod.gr...@ualberta.ca> wrote in
news:hn3t80$b0m$1...@tabloid.srv.ualberta.ca:

> All they need is a pyramid shaped "spoiler". It yields downforce in
> both directions ......... and needn't extend beyond the rear edge of
> the rear deck lid. And such a shape could certainly still include
> endplates/winglets for lateral stabilizing.
>
> I'm not sure what that shape imposes wrt drag,

Relatively little. Unfortunately, it also would produce relatively
little downforce, so as a spoiler (or wing replacement) it would
be pretty much useless.

Basically, to get useful downforce you need an aerofoil shape.
Either you get that with a wing, or you get it using the entire
carbody with a "blade" spoiler. The further you depart from
the blade shape, the less well the carbody will work as an
aerofoil, and the less downforce you'll get.

John

[Rod's SHAW]

"John McCoy" <igo...@ix.netcom.com> wrote in message
news:Xns9D35BB3C6DF...@216.168.3.30...

> "Rod's work news" <rod.gr...@ualberta.ca> wrote in
> news:hn3t80$b0m$1...@tabloid.srv.ualberta.ca:
>
>> All they need is a pyramid shaped "spoiler". It yields downforce in
>> both directions ......... and needn't extend beyond the rear edge of
>> the rear deck lid. And such a shape could certainly still include
>> endplates/winglets for lateral stabilizing.
>>
>> I'm not sure what that shape imposes wrt drag,
>
> Relatively little. Unfortunately, it also would produce relatively
> little downforce, so as a spoiler (or wing replacement) it would
> be pretty much useless.
>
> Basically, to get useful downforce you need an aerofoil shape.

"Useful downforce" ???? A wedge will certainly provide downforce ..........
the question is at what drag expense ?