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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
From: Bulent Aliev <atlasyts@bellsouth.net>
Subject: One big problem solved
Date: Sun, 16 Apr 2006 19:59:11 -0400

 From the beginning of running the engine with the prop on, I could  
not pass the 4000 RPM static barrier. First I run it with the prop I  
made that it is rather large 3 bladed 70" prop. I thought that I was  
just over proped. John Slade landed me his prop that's smaller  
diameter 64" and the blades have about 25-30% smaler area surface.  
Same static performance. I had fuel pressure, manifold pressure all  
the way to 60", but it will not budge past 4K RPM.
So I took to Tracy's manuals. One paragraph mentioned to adjust the  
timing at 4K RPM with engine and prop running. AHAA!
Me and the neighbor made degree wheel and new marks on the pulley per  
Tracy's recommendations. Last evening I volunteered my neighbor to do  
the timing light magic and move the crank angle sensor on top of the  
screaming engine and prop, while I was the "throttle man".
By 9 PM the engine passed 4700 rpm static and was ready to go  
further, but the coolant was getting too hot and I ended the  
experiments.
So, if everything else fails you turbo rotary guys, set your timing  
at 4K RPM static per Tracy's recommendations :)
Buly

Next problem installment coming....