Thanks for the comments. The engine is a OS 50SX. Hovers at about 1/2. I've now fitted a Hatori tuned pipe and the power difference is unreal! Now PH at just over 1/4!

I have a DVD with a 10 minute flight of just torque rolling but i cant seem to get it uploaded, i'll keep trying....

I think the Madness will have to wait cos i get my new 42% cap next week with ZDZ 160 champion!!

Later

Andy