Propeller

[dan carley]

I have a catto prop that only turns 2625 rpm’s
On a 0360
I believe that the prop is over pitched can this make your engine run hot?
Thanks
Danny carley

[rmarshall234]

I'm not an engine or prop expert but it seems to me that a higher pitch would create greater loads on the engine which would then in turn generate more heat. Rejecting the heat, now that's something entirely different.

[swift12]

I might be talking out of a hole in my butt but from my mechanical background...yes absolutely...engine turns slower but under more load as said above just like running a vehicle up a hill in top gear. I was looking at a catto...is it a cruise pitch prop?

[dan carley]

Yes it’s a cruise prop
Talked to catto they can repitch it

[rmarshall234]

Cool. Let's us know if it improves cooling at all

[BH1166]

Why I own ground adjustable prop. My opinion is 75 more rpm won’t make much if any difference in anything but what the tach reads.

[lr172]

On over pitched prop will increase load and reduce RPM. In an internal combustion engine, higher RPMs create more heat and increased load creates more heat. Not a combustion engineer, so can't tell you the ratios for each, but expect they are in the same ballpark (If I had to guess I would guess that increased load creates more heat than increased RPM). Therefore, an over pitched prop should have a similar engine heat output as an under pitched prop (lower load and higher RPM).

Larry