Prop for O.S. .61 FX engine
 

The manual says that the smallest prop that I could use was a 12x6 prop. The only thing I am worried about is that the 12 inch prop might not give me the clearance I need from the ground. Could I go with a smaller prop, or is the prop selection limited to the what the manual says. Thanks

RE: Prop for O.S. .61 FX engine
 

what plane is it on? a 12X6 is a good all around prop for a .61 I use an 11X8 on mine but that makes the plane faster then the 12X6.

RE: Prop for O.S. .61 FX engine
 

11x7 or 11x8 are perfectly acceptable sizes to use on your engine as well as most modern two stroke 61's.

John

RE: Prop for O.S. .61 FX engine
 

I've used a 11 x 7 on mine with a Mac's tuned pipe. The engine was installed in a Bridi XLT which flew like a bat out of hell.

RE: Prop for O.S. .61 FX engine
 

thats sweet!!! a buddy of mine used to have one with a rear exhaust Rossi and retracts

RE: Prop for O.S. .61 FX engine
 

If you're concerned about ground clearance how about a 10x7 three blade prop? Slightly less efficient, but much more efficient than trying to dig holes in the runway with the prop tips. :)

RE: Prop for O.S. .61 FX engine
 

I have a 10x6 sitting around, would that work?

RE: Prop for O.S. .61 FX engine
 

what airplane is this going on? you can go a size bigger on the tires.....a 1/2 inch bigger wheel gives you another 1/4 inch of ground clearance

RE: Prop for O.S. .61 FX engine
 

I have it on my trainer. My old engine is acting up, so I slapped my .61 FX on it.

RE: Prop for O.S. .61 FX engine
 

You'll over speed the engine...

Cheers,

RE: Prop for O.S. .61 FX engine
 

It is really too small. You'd need a 10x12 two blade, or a 10x8 three blade, to put a load on the engine similar to a 12x6.