rv9aviator
Well Known Member
I have an RV-9A with a Lycoming 0-320 E3D 150 HP engine with a Ed Sterba 68-74 prop. My engine redline is 2700 RPM. I read somewhere you should pitch your prop for max RPM at 8000 Feet Density Altitude with wide open throttle. My engine only turns 2500 RPM at that altitude WOT. My airport elevation in 1360 feet and I have good climb and cruise performance. One of my pilot friends that has probably over 10,000 hours asked why I wanted to max the rpm at that altitude. He said all I would do is burn more fuel for little gain in speed. He said he would leave well enough alone. I need some more opinions and a better understanding of why! Thanks