ORIGINAL: speedster 1919
Forget mft's advertized HP this is from the Paul McIntosh engine test chart using 15% nitro
ST 45 prop 11x7 10,700 TT 46 prop 11x7 10,500
ST 45 APC 12x6 10,600 TT 46 APC 12x6 10,300
That stuff is with stock mufflers. The TT muffler is crap -- restrictive, but not quiet.
It would be much more revealing if we could see a comparison with a common muffler type for both engines -- that would actually tell us which one inherently makes more power.
The TT 46 Pro wakes up very substantially if you remove the baffle & drill out the exhaust stinger -- goes like hell & even turns big props like a 4-stroke.
It also responds very strongly to a Tower 46 "tuned" muffler -- it wails with standard size props, or smaller "speed" types.
Does the Super Tigre do the same?