Subject: RV4 prop pitch.
From: rotaryeng
Date: 11/18/2013, 12:19 PM
To: AAA-rotaryeng


Hi Paul,

Would you know the pitch and diameter of this propeller (see attachment)?

Thanks,

JP

The diameter is 68 inches.

The angle of attack on the back side of the blade 2/3 rds of the way out
is 30 degrees. How that translates to prop pitch is unclear as the
blade is twisted. The blades are also bent back.

The gear box ratio is 2.17:1. My guess on the HP is 180.

Paul Lamar


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