ORIGINAL: buzzard bait
Very interesting. Only issue is how many different kinds of fuel I'm going to keep!
I didnt want to have 10 different mixes, so I just run 2 standard mixes. (I make my own fuel). ALL airplane engines regardless of cylinder/piston construction is 5% nitro 20% castor minimum. My Sportsters and my Fox .40 (single BB) will get 25% castor and 5% nitro. My car engines (2 - .20's, a .26, and a .28 all ABC) get 20% nitro and 12% oil although I am going to test 8% oil and 10% oil tomorrow in the .26 and .28.
I got a funny look from one of my Airboat buddies last summer. "Your engine's exhaust smells weird" He's used to Omega, so of course it smelled funny.. haha.