OK I thought I would kick this off. I just entered 2 cars in the UK RC Speed Champs and both failed miserably. Both had CMB RS 45's (7.5cc marine engine) in. You can find details here
http://www.fast-rc.co.uk/forum/index.php?topic=529.0
One of the engines seized and the other stripped the thread from the clutch bell. Anyway its back to the drawing board and I have come up with another stratergy.
I willbe fitting one of the CMBs into a Kyosho Evolva and getting a CMB RS 90 (15cc) to fit into another new car. This engine has serious torque and there is no clutch on the market that can handle the power. I tried a HPI 1/5th Baja clutch and its no good. I therefore need to design and build my own clutch
Anyway stay tuned and I'll post progress on both cars here
Cheers