Here's my old thread in the Wildhare RC support forum:
http://www.rcuniverse.com/forum/m_29...2Cracer/tm.htm
On my last flight with my glow powered LR-1, the engine threw a prop blade at around 18000 rpm. Got the plane down ok. Now that the firewall is off, I plan on making another firewall from 1/4" ply. But I can put the firewall where-ever it needs to be for ???engine.
I have a couple of Supertiger X.40 formula 1 engines that someone gave me, but I'd have to cut away the right cowl cheek to fit the rear exhaust pipe.
I think the Jett BSE 35 would be ideal for this airframe in terms of power and light weight.