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Old June 27th, 2009, 16:59   #13
Joe Gremlin
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Join Date: Jul 2007
Location: Trenton
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Default Re: Running props over square?

Quote:
Originally Posted by SteveC View Post
I have a hard time imagining that the same rule of thumb would have come into being if we were talking about 43 mm Hg and 38 Hertz. Or 57 mbar and 241 radians per second.

They're just numbers.
Keggers. If we're talking hypothetically about what to call the arbitrary units of measurement we're going to use, I want one of them to be called keggers. Set the MP to 44 ft pounds of diesel dust and set the prop to 720 keggers. Unless its a three blade prop, in which case you'd set it to 1122 quarter keggers.

Kegger silliness aside, I agree completely with your statement. The units are arbitrary. I think the reason the no oversquare myth continues to exist is because its really easy to teach and its pretty much always safe in terms of being harmful to the engine.
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