The way I understand (or misunderstand) that is the 48 pitch is turning enough faster than the 51 will, so that it actually moves more air. If one had unlimited horsepower or torque (wouldn't that be sweet?) then yes the 51 would climb faster as you reason.
--- In [email protected], Bill BIGGS <webacr...@...> wrote: > > > 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: e...@...; [email protected] > From: ercou...@... > 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/ >
