hi
I tried putting a 12x6 APC prop on the 65FS instead of a 13x6 gave a much
smoother landing approach speed and faster acceleration on take off. there
was not a lot of difference in air speed either. I to had to put a bit of weight
in the tail to balance out the heavier four stroke something I do not like doing
but could not get the battery pack far enough back oh well! its flying a lot better
now not quite as good as it could be but pretty close.

fly well