RE: MLD-28 gasoline engine
Snow, wind and cold have killed my chances to run my MLD 28. Just mounted my second MLD 28 in a Giles 202. The second MLD looks as good as the first. Quality of the finish of the outside and the piston and cylinder walls looks above average for a motor in this size class.
The TT Bearcat has a listed wingspan of 63 inches and a flying weight of about 10 lbs on a 120 engine. The MLD would work. My OS 120 4C if I remember had 15 lbs of static thrust, I did not check my MLD yet but it would be at least 15 lbs thrust. The Bearcat on a 3-blade proped MLD 28 would have great aerobatic performance and look cool.