Good point, George.   I was looking for about 10-12gph.
Curious if a 550 will run smoothly there.

Just curious also, now that the other thread is going, have you determined
that high map/low rpm is more efficient than lower map/higher rpm.
From those frictional loss numbers Walter put out, it would seem so.

(In other words, rule of thumb for best efficiency: set the rpm
as low as you can stand it and still achieve required power?)

Colyn

----- Original Message -----
From: "Marvin Kaye" <marv@lancaironline.net>
Sent: Thursday, December 23, 2004 5:40 AM
Subject: Re: [LML] IVP low power settings vs. pressurization


> Posted for "George Braly" <gwbraly@gami.com>:
>
>   Colyn,
>
>   What  RPM and fuel flow would you be using with the 28:” of MP?
>
>   At 28” x 2100 RPM,  I can get the Hp down to as little as 180 or 190 Hp.
>  How
> much lower do you want to be???.
>
>   Regards,  George
>
> """
>   I've been looking at long range profiles and noticing that a lot of the
> interesting range is below
> 28" MP.  I've heard this is the least that will keep you pressurized at
> altitude.
>
>   Is this really true?
> """"
>