Whilst the max RPM gives us some indication of the engines power, it tells us little of its ability in the air. The mid range torque band is very important, and gives the engine the ability to spool up the prop quickly, and gives you crisp throttle response. I was amazed when the Super Tigre 2300 (23cc) came on the scene. It would get almost identical top end RPM to the Super Tigre 3000 (30 cc) However, with an 18 x 8 master airscrew Classic glass prop, the spool up speeds were dramatically different. The 2300 was lethargic. The ST 3000 won hands down. Now, when you are doing 3D, and you are relying on your throttle to provide thrust when required, you need torque. I think the MT 35 would win here. IT is a longer stroke motor than others in its class. Interestingly, the MVVS 45 (43 cc) has the same stroke and bore - very unusual for a model motor, but it enables it to swing big props. This design philosophy runs through the MVVS range, and from what I have read, it is also an MT engine characteristic. I have had some email exchanges with Tommy, the designer at MT engines, and he kept telling me to use a bigger prop, as he said in his words "Engine has much torque"
Dobo - "Just Plane Crazy"