it's just M.O., but I would think if you went up in prop diameter and get that RPM down a bit/ around 8000 you will get more out of your motor,, if you don't have room for a larger diameter go up in pitch..
Running a 15x12 APC. The plane is a racing platform, and this prop/engine has shown to give the best perfomance. I plan on trying some different set-ups.
Since this is likely your first gasser 40-1 would be a good mix until you gain a bit more understanding of the engine.
Not my first Pat, (I own 3 gassers) but I by no means consider myself anything other than a novice. I am a little rich, as I am still in the break in stage. The 32:1 is the suggested break in mix for this engine. I'm on my second gallon now and have it at 40:1, per manufacturer recommendation.
Pe... Would you suggest a mix any leaner (oil-wise) than the 40:1? Since the Evo is essentially an MVVS, what would you recommend?