Low speed Arrow II cruise

[Dude~]

Odd question I know... but can anyone tell me whether an Arrow II can be cruised at the bottom end of the 'unsympathetic vibration' range on the tacho, ie 2100rpm I think, and say 21 inches manifold pressure. Will it sustain level flight in this config? and if so what is the likely IAS?

What is the 55% endurance crusie data?

Cheers

PS, no I don't have access to a POH.

[DFC]

2100 RPM is indeed approved for flight at 65% power or less - Refer to the Power setting table in the Pilot Information Manual.

55% Power at 2100 RPM is obtained at the following Manifold Pressure settings;

SL 22.9
1K 22.7
2K 22.4
3K 22.2
4K 21.9
5K 21.7
6K 21.4
7K 21.2
8K 21.0
9K Full Throttle

The book fuel flow figure for 55% is 8 US Gal Per Hour

The aircraft definitely flies at this approved power setting.

Note that the above heights are Pressure Altitude and ISA


Regards,

DFC

[Dude~]

Thanks very much DFC. Any chance of some airpseeds?! Say, 55% at 2000 ft ISA. Ta very much. Just thinking about things...
;)