ORIGINAL: rsay
please note that we only use castor oil and methanol here. nitro is too expensive.
I have run my TT07 on 5% nitro with no problems. I haven't tried straight fuel, but it will probably work okay.
I usually use a 7*3 prop, which seems to be about the best all round size for these engines. If it's too much power for your plane, then throttle back. TT07s throttle really well.