RE: Ziroli F9F panther
Dan,
Mine is the 72" or smaller one. It's still pretty stout at 20# dry, but since it's the same weight with the Cheetah as with that P-60 it's nice to have the extra power. I really beefed up the interior to carry the extra power. Takeoff roll is from the end of the runway at the berm and it's airborne before the first taxiway. Full power to over the lake on climbout and then back off to 1/2.
Really pumps the adrenelin.
John