Did I say we were going to use a 9x6 for combat? NO, I didn't. All I said was I was going to check the RPM's with it so I can get an idea of the RPM range of my engine. Please don't tell me you think that a given engine/prop combo will pull all planes at the same speed. If that were the case I would fly pylon with a Sig Kadet.
You lost me on the LT thing. We ALL have tachs.