"sidk" wrote in message
om...
Here is a link to a photo from last month's tuft-testing on my
Velocity with hopes that some clue would appear as to why my engine
cooling is worse than marginal. Tape was duct tape and some was on
for several months (waiting for weather, photographer, digital camera,
photoplane, etc...) and was a pain-in-the-butt to remove.
For the test, the left (pilot) side NACA has two VGs, the right side
none.

http://img35.exs.cx/img35/5182/HPIM0430.jpg

Sid Knox

Velocity N199RS
Starduster N666SK
KR2 N24TC
W7QJQ

http://img35.exs.cx/img35/5182/HPIM0430.jpg

Interesting. I'm sure you have researched the data that shows NACA
submerged inlets are poor at cooling applications, where the pressure
required for good flow, are relatively high?

Wouldn't a scoop, ala upside-down P-51 scoop do much better, with low drag,
also?

Did you try naphtha, (lighter fluid)?

I made the mistake of leaving duct tape on a vehicle too long once, and I
commiserate. Slow steady progress with plenty of naphtha and paper towels,
was my best way out.
--
Jim in NC


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