I wasn’t really happy with the performance of the O.S .65 AX engine with 11 inch propellers so I’ve fitted a brand new O.S .61 FSR ABC engine that will use a Tore Paulsen style pipe and Hatori aluminum header.

F3A aerobatics
I wasn’t really happy with the performance of the O.S .65 AX engine with 11 inch propellers so I’ve fitted a brand new O.S .61 FSR ABC engine that will use a Tore Paulsen style pipe and Hatori aluminum header.