RE: rossi53 in a cougar. good or bad? help!
IMO, it will be just o.k., but how o.k. depends on what you are looking for. I have one with a rossi 45 turning a 9x6 @ 16.8k and I estimate its in the 90-120mph range (big range because I really cannot judge how fast something is going, but this is what people tell me its doing).
It is a fun sport plane though. Easy to fly and I can land it anywhere (I touched down in a 4ft circle 10 times in a row).