It is a matter of Torque.
With the same prop pitch, more engine torque is required to turn the prop at a higher rpm. Bill To: [email protected]; [email protected] From: [email protected] Date: Mon, 25 Jan 2010 13:59:00 +0000 Subject: RE: [ercoupe-tech] Re: PROP PITCH I am and have been confused about the prop pitch and hp relationship. If one is flying at a specific rpm with a 85 hp engine and a 71-51 prop, it is moving a specific amount of air regardless of the weight of the airplane. I understand that if the engine won't achieve the particular rpm the prop is not moving the same amount of air. So a 71-48 at 2250 rpm moves less air than a 71-51 at 2250 rpm. One would think that the 51 pitch would be better for climb. Is the issue that the engine can't turn the needed rpm in climb? Lee ____________________________________________________________ Diet Help Cheap Diet Help Tips. Click here. _________________________________________________________________ Hotmail: Free, trusted and rich email service. http://clk.atdmt.com/GBL/go/196390708/direct/01/
