flyrotary@lancaironline.net Mailing List Archive

Matt: The cowl louvers can create a very effective low pressure in the cowl, and are very easy to add or implement,without big alterations to the cowl itself.
The littlebit of “friction drag” is is so small for the gain in cooling and looks good too

Included photos of Rudi Greylings RV cowl in ZA

Ed Anderson also did some side louvers on his RV6A.

Le Roux

Sent from my iPhone

Le Roux Breytenbach

On 29 Jan 2021, at 19:50, Jeff Whaley jwhaley@datacast.com <flyrotary@lancaironline.net> wrote:

Matt there are airplanes out there with side exit louvers ... the Beech Craft Bonanza and the Carbon Cub for two examples. There's a guy with a Murphy Moose and an LS3 engine using cowl louver exit exclusively ... here's a link to his video ... https://www.youtube.com/watch?v=QyiEAcwhirg ....
Due to some of my cooling issues, I adapted some louvers into my cowlings last summer ... here is a link to my experimentation video ... https://www.youtube.com/watch?v=khG0J6zGVl0 ...

Jeff
13B, RD1-C, EC2, 186 hrs

Le Roux, I have talked with Alex a bunch over exit louvers on the side. We are hoping to tune the exhaust dumping better to help pull air out of the bottom of the cowl. I don't see too many exit louvers though on planes. Any reason for it?

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