Andy Ross said:

> Jim Wilson wrote:
> > If you look at that manual the diagram in Section I that shows
> > the control box, indicates at #12 "Prop Control" (I've only got
> > about 6 pages from that manual). That's the blue knob with the
> > P on it in the model.  The control box indicates "Max RPM" with
> > the blue knob all the way forward.
> >
> > What does the manual say about that control?
> 
> Here's the relevant section:
> 
>     PROPELLER.
> 
>     The airplane is equipped with an 11-foot 2-inch diameter,
>     four-bladed, constant-speed, Hamilton Standard Hydroatic
>     propeller of the nonfeathering type.  A propeller governor
>     mechanically controleld from teh cockpit admits engine oil to the
>     propeller dome for pitch changes necessary to maintain a constant
>     engine sped.  Engine oil pressure is used to aid th ecentrifugal
>     twisting moment of the blades toward low pitch (increase rpm), an
>     dboosted engine oil pressure through the governor moves the
>     blades toward high pitch (decrease rpm).
> 
>     Propeller Control.
> 
>     A propeller control (12, figure 1-4) located on teh throttle
>     quadrant, is mechanically linked to the governor.  The control
>     setting determines the engine rpm, which is maintained constant
>     by the propeller governor.  The propeller control may be
>     positioned at INCREASE or DECREASE or to any intermediate
>     position.
> 
> The range of RPM settings I see in the performance tables is
> 1600-3000, so those are probably reasonable numbers to use for
> the min/max range.  I'm sure real planes would vary due to
> calibration issues anyway.
> 

The min/max range,  does that refer to engine RPM or propellor?

Best,

Jim


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