ORIGINAL: Jay D
This Waco I bought has a Magum XL .91 4 strock, What kind of RPMs should I be looking for? High & Low for tuning the engine. Also how can I get the manual on this engine?
Thanks, Jay D.
Download the manual from
http://www.hobbypeople.net/gallery/210970.asp
My Magnum 91 RFS turns a 14x6 prop around 9500 (a bit rich) using fuel with 10% nitro. My brother uses fuel with 15% nitro and gets around 600 rpm more (also running rich) with the same prop. We have not tried other props because we've been really happy with the 14x6.