Static rpm for the 180 FP

[tellicovillage]

What do you typically see at takeoff brakes held full power?
I have a standard FP prop + 180 horse and only get about 2400 rpm but will get to 2700 firewalled and level. The reason I'm asking is to take off seems long.

[Mountain Doctor]

That is the same engine and propeller set up I have, and I am not at the plane, but that sounds about right. You're not going to get redline rpm static, you need a flow of air into the propeller arc, to get the engine to spin up to full RPM. I would consider that normal. This, is a major downside of our fixed pitch propeller's. You don't get rated horsepower at less then redline rpm at the beginning of a take off roll.

[Mountain Doctor]

Also density altitude would matter also. At lower temperatures and lower field elevations, the air will be "thicker" and you will develop less rpm at static run up. I suppose at a high enough density altitude, you could get closer to red line. Of course there is a law of diminishing returns on this as well, and very high density altitudes, the engine will not make rated power at any RPM, instead the RPM will drop again.