pattern motor os 140 or webra 1.45
Hey Earl,
I have the older "R" version. I can't tell from the specs the difference between the two engines. I haven't tached it yet, but I am using 15% Morgan Omega fuel and an APC 16x13 prop. I will tach it for you soon, if you would like. I have an APC 17x13 prop that I will try soon as well. I will keep you posted.