Re Jim Frantz's message on the above what are the MP/RPM limitations and
what are the engine combinations. I have not seen anything in the Lancair
literature.

I have an IO360 A3B6D 200hp and I did get an unofficial opinion from
Hartzell that all would be well and there would be no limitations. They
would not give me an official opinion as they had not tested the combination
of engine and propellor. I know this engine has 6th and 8th order
counterweights which makes it a smoother engine.

Does Jim or anyone else know of any limitations on the 68" Hartzell
propellor and the IO360 A3B6D engine?

I am aware of a limitation on the Piper Arrow with a IO 360 C1C from 2100 to
2350 rpm.  This engine is basically similiar to my engine but drives a 74"
propellor.

Regards

Ian Crowe.