Well, I finally got to setting up my Circus King with the OS Wankel engine.
I sawed the nose off the Circus King, mounted a firewall for the Wankel and flew it yesterday.
To say I was amazed is an understatement!
I used a 10-6 wood Sail prop, Brodak 5% nitro, 23% 50/50 lube and 62 foot lines.
The plane took off like a rocket and flew 3.85 second laps, pulled like a horse!
It flew much faster than with the original engine, a Johnson 35, which ran on 10% nitro.
The turns were a bit sluggish due to being a bit nose heavy but once I balance and slow it down a bit, it should be a good sport plane. AND, the sound was great.
I designed and installed an adjustable throttle control which should help, along with a lower pitch prop.
I welcome any thoughts comments or suggestions.
Bob Z.