I have real world question specifically to: Tracy Crook, Ed Anderson,
Chuck Dunlap & Perry Mick. If their answers differ from the way any
other subscriber's,  please include yourself in , otherwise DO NOT
reply.......This will keep the traffic to a minimum on the ACRE site.

"What Maximum RPM do your engines develop on FIRE-UP (Starting) "PEAK
ONLY", also state ambient Temperature"? I would like the average of
three (3) starts. Tracy, what's the RPM of the starter you use and the


ratio to the Starting Ring?

No rush on this,.............Thanks, Butch

My sentiments exactly. Stay away from ladders Tracy and other risky
activities. Flying a rotary is OK :)

Paul Lamar

It Depends.
I usually have the thorottle cracked open a bit, It probably goes up to
2500-3000RPM as soon as it catches, depending on the throttle opening.
The lightweight wood prop does not have much mass at the tips so not
enough flywheel effect to keep RPM from peaking.
My Lycoming O-320 with 3 blade wood prop does the same thing (peak RPM
perhaps 1200-1500 RPM at startup) compared to a metal prop.
I can go out today and try to get some better numbers with your question
in mind.

Chuck Dunlap

I agree, depends on throttle setting, usually 1500-2500.  It will idle
nicely at 750 RPM after it's warmed up.

Perry

 
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