twister

My Feedback: (12)

Hello, im installing a brand new O.S 91 fx on my Stinger 60 and was wondering what is the best prop size for this engine, im looking for a good mid range prop?

DGrant

My Feedback: (4)

I would go to the book and see what that tells you first, but I run a 14x7 on my .91 with good results. If the engine is brand new, you should have a reference in your manual for a break-in prop though. Good luck.

majesticmonkey

I use 15x6 and 16x6 with excellent results.

This engine has plenty of torque.

SMALLFLY-

My Feedback: (19)

OS on their FAQ section says this motor is prone to overheat when using big props, They recommend 13 x8 or so. I have used a 13-8 14-8 and a 15-6 with no problem. I wouldnt go any bigger than that. It is a 2 stroke and is supposed to rev up pretty high.

speed 13 x8
all around 14 x8
thrust for hovering lower speed 15 x 6
APC and bolly clubman and MA scimitars all work equally well. IMO the ma scimitar is thrustier and the apc turns faster and the bolly is a nice middle combo