Yes, the TT is moderately heavy, but very powerful. I believe it is a 2.7ci (45cc) engine. I had mine originally on glow in a Midwest Extra 300. Flew great on a MAS 20x8, but when I changed to APC 20x8 WOW, a different airplane. I know the APC looks funny, but it really brings this engine alive. The only problem I had with the TT was it had to have on board glow, that is why I switched to gas and CDI. Good luck, red