What would be a good prop for 3D (maxium thrust, low speed) flying with a OS 61 FX (two stroke).

Either an APC 13x4 or 14x4 has been suggested to me - I believe the 14x4 might be too much prop as I believe the 61 FX makes its peak power at pretty high rpm.

Thanks for any info

Malcolm

The 13 X 4 would be better

I was happy with the APC 14x4 W prop.

I'd try them both.

APC makes a 13-4W. It's a wide blade prop. I've used it on the 61FX.