RE: Building the Optica
Rethinking of the motor size. A .61 would be struggling. So have opted for a GMS .76. Price of same here in Australia is also attractive== $130. Read a review on this motor whereby someone is running his GMS .76 on 40% nitro in a ducted fan. I'll stop at 10 % nitro. Seeing I'm restricted to an 11 inch prop, I'll increase the pitch of the 11 X 7 three blade pusher prop to an 11 x 8 3 blade pusher.