flyrotary@lancaironline.net Mailing List Archive

Hi Lynn,

I have to say that I do not know exactly. All I did was follow Tracy's directions (which he says are conservative). I cant recall exactly how much that works out to, but it is set at something like 25"map. But then his computer retards the advance at higher RPM and MP. In casual conversations, he cannot recall exactly the algorithm but he says he developed it on the advise of some car racers. Maybe that was you?

Since I don't even have a good knock sensor or wide band O2 sensor, that was the best I could do for my one-off adventure at Reno.

On Tue, Jun 25, 2013 at 7:05 AM, <Lehanover@aol.com> wrote:

What is your maximum ignition advance?

Lynn E. Hanover

In a message dated 6/25/2013 9:20:29 A.M. Eastern Daylight Time, wdleonard@gmail.com writes:

Detonation can definitely cause the damage you saw, but that would be my second most likely event after FOD. To get detonation you would have to have not checked your timing very well AND gone to nearly full power.

That turbo is very similar to mine. I wish I had a larger A/R but .81 is adequate and worked for me to make over 300hp at Reno. But even then I was still not using full throttle. I set a limit of 45 inches for Reno. My normal limit is 40 inches for take off (and that is short periods only). I currently have the waste gate removed and the turbo will only do about 38 inches at sea level.. which is perfect for the RV and keeps a rein on my lead-foot (or fist).

--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net