Subject: Re: [FlyRotary] Re: New Scoop/cowl flaps X-FID: BA285063-5BCE-11D4-AF8D-0050DAC67E11 X-Priority: 3 --------------Boundary-00=_R0TWBHK0000000000000 Content-Type: Multipart/Alternative; boundary="------------Boundary-00=_R0TW6RO0000000000000" --------------Boundary-00=_R0TW6RO0000000000000 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Mark and Ed,=0D =0D Just as an update, controlling the cowl flap is not an issue anymore sinc= e I installed the flap actuator mechanism under the cowl. Cruise speed has n= ot been measurably degraded, although it certainly adds drag in the full-ope= n position!=0D =0D http://www.weslick.com/cooling.htm=0D =0D I get jealous when I read about full-power climbs on hot days with no cooling issues! In reality, though, I have adequate cooling for cross-country flight, local sightseeing/recreation, and formation work, s= o have no immediate plans for further mods. I did put the Spintech under t= he belly which is a little ugly, but the upside is that it masks the turbule= nt flow from the cowl flap :-)=0D =0D Bill=0D =0D -------Original Message-------=0D =0D Mark, =0D =0D I considered them in my early days when I was fighting high temps. But, once I solved that I have not really considered them. The only person I = am aware of using them is Bill Eslick. You should contact him for details, = but my impression was that while they appear to work in aiding cooling, they also acted like a speed brake dropping over 10MPH from his cruise. I believe he also found it very difficult to close them down against the ai= r flow out of the cowl when he tried to close them to minimize drag. =0D =0D But, again contact Bill for the full skinny.=0D =0D Ed=0D =20 --------------Boundary-00=_R0TW6RO0000000000000 Content-Type: Text/HTML; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Mark and Ed,

Just as an update, controlling the cowl flap is not an issue anymore= since I installed the flap actuator mechanism under the cowl. Crui= se speed has not been measurably degraded, although it certainly adds dra= g in the full-open position!

I get jealous when I read about full-power climbs on hot days with n= o cooling issues! In reality, though, I have adequate cooling for c= ross-country flight, local sightseeing/recreation, and formation work, so= have no immediate plans for further mods. I did put the Spintech u= nder the belly which is a little ugly, but the upside is that it masks th= e turbulent flow from the cowl flap :-)

Bill

-------Original Message-------

Mark,

I considered them in my early days when = I was fighting high temps. But, once I solved that I have not reall= y considered them. The only person I am aware of using them is Bill= Eslick. You should contact him for details, but my impression was = that while they appear to work in aiding cooling, they also acted like a = speed brake dropping over 10MPH from his cruise. I believe he also = found it very difficult to close them down against the air flow out of th= e cowl when he tried to close them to minimize drag.

But, again contact Bill for the full ski= nny.

______________________= ______________________________
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