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

From: David Leonard

To: Rotary motors in aircraft

Sent: Wednesday, August 03, 2005 10:50 PM

Subject: [FlyRotary] Re: further testing - -lycoming O-320

Kevin, I agree with Ken Powell that it still sounds mostly like fuel starvation, probably in the carb.  So I won't beat that horse...  However, if following those suggestions doesn't fix it, then consider:

 

Since you have definitely identified temperature as a culprit, that points at 2 possible causes: fuel vaporization and detonation.  Vaporized fuel going to the carb could cause a scenario where the bowl cant fill.  Also, detonation could behave like what you describe.  Maybe you cooling flow is no sufficient. 

 

Doubtful, but a bad could maybe act that way.  It's easy enough to test that as a possibility.

--
Dave Leonard
Turbo Rotary RV-6 N4VY
http://members.aol.com/_ht_a/rotaryroster/index.html
http://members.aol.com/vp4skydoc/index.html