Cowl Flaps

[svyolo]

Chris, for me that is a reason enough not to do it. On an air cooled engine, you can only leak oil or fuel. Either leaking on the windscreen is a disaster.

[RatherBFlying]

Battson how did you actuate your cowl flaps? I don’t want to use an actuator, and am struggling to find certified examples for inspiration.

[Battson]

TimTall's post below shows a similar setup to mine, except I used the push/pull with threaded rods at the ends, instead of wire ends. So I used clevis ends instead of the wiregrips.

[huntaero]

Here is a couple pics of my cowl flap installation. We fly in temps from 100f+ to -10f on floats wheels and skiis so cowl flap is a must. Used a Ray Allen actuator PN B6-11T

[TimTall]

I used this dual end push/pull cable...https://acsproducts.co/our-products/...-lock-control/

With these wiregrips at the ends...

https://www.aircraftspruce.ca/catalog/appages/wiregrip.php?clickkey=3009106

There's a white knob to the right of the mixture control pushed all the way in to open the flaps. Works great mechanically and I have very good temperature control. IMG_6017.jpg IMG_6022.jpg