Setting the prop for crosscountry

With the Airmaster as you say you can easily adjust manually.

So you could fly and experiment with different settings record the best then reprogram the prop to your desired best.

However normally the Airmaster controller has pretty good settings out of the box

TO is about 5750....but of course only for five min

Climb is about 5500 the max you can do continuously

Cruise this varies a bit but most I have seen are set for 5200 rpm

as others say anywhere from 5000-5500 are acceptable for cruise and at low manifold settings you can still have 5000 rpm and very low stress on the engine.

The joys of a controlled prop.

The E-Prop seems to be getting a good reputation for increased performance from many people. Haven't  read anything bad about it, but lots of happy customers. 

D

Hi Sean,

In my study prop pitch under 5500 just kept making higher temps. Being over pitched just causes the engine to work harder and stresses it. 

Bottom line it won't  hurt to adjust the prop to get better temps and better performance. It won't  hurt anything, it's  easy to do and doesn't cost any money.

The other thing for engine temps is cowl air flow and radiator and oil cooler position.

Not to mention during summer months OAT are higher. Right now in Tucson, AZ it's 108F and in Phoenix, AZ is 115F. These temps make a difference. Taking off flatter with more speed can help at times. Most here in the SW USA see take off tempds between 235F - 245F and some around 250F, but these should all come down in level reduced throttle flight. 

Having a prop pitch too course will cause higher engine temps really quick. Plus make sure no oil hoses have too tight a bend that reduces the hose ID which will add to high temps.

Try a prop pitch change and see if it helps.

Hi Sean,

In my study prop pitch under 5500 just kept making higher temps. Being over pitched just causes the engine to work harder and stresses it. 

Bottom line it won't  hurt to adjust the prop to get better temps and better performance. It won't  hurt anything, it's  easy to do and doesn't cost any money.

The other thing for engine temps is cowl air flow and radiator and oil cooler position.

Not to mention during summer months OAT are higher. Right now in Tucson, AZ it's 108F and in Phoenix, AZ is 115F. These temps make a difference. Taking off flatter with more speed can help at times. Most here in the SW USA see take off tempds between 235F - 245F and some around 250F, but these should all come down in level reduced throttle flight. 

Having a prop pitch too course will cause higher engine temps really quick. Plus make sure no oil hoses have too tight a bend that reduces the hose ID which will add to high temps.

Try a prop pitch change and see if it helps.