ORIGINAL: murrat
I have this plane with an OS AX 55 and mini tunned pipe. I had to tilt the engine the the left to make clearance for the muffler. It might be in your speed range. 100 to 110Mph I'm guess with that engine/muffler. I recommend you reinforce the nose wheel wood block. Mine came off after running it on a rough field. Real pain to fix after the fact.
Also I upgraded all my rods to 440 dia. as I knew I didn't want flutter in steep dives at high speed.
I like this plane because it was cheap and it does these huge hight speed loops. It will do knife edge as well. Vertical is unlimited.
Enjoy
ok cool great, im just using this plane as a "trainer" for faster thinner wing jets in the near future and a slow progression to turbines.