> Subject: [FlyRotary] Re: Cooling / Pressure recovery > > Here is a link to the basic info on the cooling flap. My apologies for the > large files. > > > > http://webpages.charter.net/wgeslick/N268BL/n268bl.htm > > > > Back to pulling the tanks and plugging seeps. I have a spintech and a glass > pack to try after that. > > > > Someday I will get back to more flying and less tinkering. > > > > Bill Eslick > > > > > > > > -------Original Message------- > > > > From: Rotary motors in aircraft > > Date: Wednesday, August 06, 2003 06:21:40 AM > > To: Rotary motors in aircraft > > Subject: [FlyRotary] Re: Cooling / Pressure recovery > > > > Hi Bill, > > 1. Your temps sound better than mine...:0) (for now) > > 2. What were the temps before you made the cowl flap larger? > > > > I normally kept the temps in the 190's at full power with the old intake > manifold. With the new one, I was forced to pull power as they approached > (rapidly) the lower 200's. With power reduced to match the old available > power, the cooling was the same. > > > > 3. What is the angle of your flap and what are its dimensions? What is the > area of the opening behind the flap? One can open the angle of the flap to > increase the opening, which also increases drag and calls for an adjustable > flap. Or, one can move the flap forward on the bottom of the cowl and keep > the angle and flap dimensions the same. This will make the exit area larger > and I don't know what it will do to drag..:-) > > > > See link above. > > > > 4. Less than WOT (25") calls for more runway, I'd think. > > > > This is still a 500 fpm climb at OAT of 100+, and as the air cools, I add > power. WOT is always used for takeoff, so I am only talking about the > cruise climb. > > > > Share a little more of the particulars, please. > > Tommy James<>< > > > > I made a new one that is about twice the size of the original. Now I can > climb out at 25 inches MAP with OAT over 100F, and the oil stays under 200, > and the coolant stays about 205. Does that sound reasonable for temps? > > > > > > > > > > > ------=____1060292718081_q()DRk,,eB Content-Type: text/html; name="reply" Content-Disposition: inline; filename="reply"

Here is a link to the basic info on the cooling flap. My apologies for the large files.

http://webpages.charter.net/wgeslick/N268BL/n268bl.htm

Back to pulling the tanks and plugging seeps. I have a spintech and a glass pack to try after that.

Someday I will get back to more flying and less tinkering.

Bill Eslick

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

From: Rotary motors in aircraft

Date: Wednesday, August 06, 2003 06:21:40 AM

To: Rotary motors in aircraft

Subject: [FlyRotary] Re: Cooling / Pressure recovery

Hi Bill,

1. Your temps sound better than mine...:0) (for now)

2. What were the temps before you made the cowl flap larger?

I normally kept the temps in the 190's at full power with the old intake manifold. With the new one, I was forced to pull power as they approached (rapidly) the lower 200's. With power reduced to match the old available power, the cooling was the same.

3. What is the angle of your flap and what are its dimensions? What is the area of the opening behind the flap? One can open the angle of the flap to increase the opening, which also increases drag and calls for an adjustable flap. Or, one can move the flap forward on the bottom of the cowl and keep the angle and flap dimensions the same. This will make the exit area larger and I don't know what it will do to drag..:-)

See link above.

4. Less than WOT (25") calls for more runway, I'd think.

This is still a 500 fpm climb at OAT of 100+, and as the air cools, I add power. WOT is always used for takeoff, so I am only talking about the cruise climb.

Share a little more of the particulars, please.

Tommy James<><

I made a new one that is about twice the size of the original. Now I can climb out at 25 inches MAP with OAT over 100F, and the oil stays under 200, and the coolant stays about 205. Does that sound reasonable for temps?

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