RE: Nitro models pusher Bobcat?
BillS - If you're going to buy a motor, get the 55 AX - same mounting pattern as the 46, but the power of a very strong .60.
I run mine on 30% heli fuel - (broke it in with 1 gallon of 15% first), APC 11x7 Pusher Prop, Jett tuned pipe - I"m turning over 14,500 on the ground. I get clocked regularly over 130mph. And yes, it's the retract model.
1/4 UP spoilers, with about 8% of down elevator mixed in allows me to drop my gear and hit the spoilers and the plane just slows down and settles in with a nose-high attitude....then you need to manage the throttle properly, but you can land with a fairly short rollout - not like landing an Extra, but I also don't take up a 600' paved runway....maybe 1/3 of it with the spoilers....without them, yeah, it's a rollout.
Cya
Mark