Jonny - 95mm OD, don't really know about engagement.... Might be a bit crap.. But when it does grip it should be pretty impressive...

No idea on the KE it will deliver, but from what Gary has told me... It'll make bonner look like a toy :P

And yeah... In runner... Castle creations neu 2200kv... I used to be the only person using scorpion motors... Now everyone has them... So thought I'd try something else.