Byron Brandon Ward wrote:

Anderson Ed wrote:

Interesting results, Neil.  Since my empty weight is 1170lbs it would be
tough to compare real world performance {:>}.  My normal loaded weight
with me and a full load of fuel is 1591 lbs, I wonder what my 68x72 prop
should give me with 150 hp.  I would say a cruise of 175-177 MPH TAS
(183 Max at WOT) and a rate of climbe of 1400 fpm SL.

Ed  Anderson

I don't know if this is really obvious to everyone but you can get a
fairly accurate estimate of climb rate simply by dividing excess
power by weight. Power of course has to be in ft-lbs/s so the units work.
1 hp = 550 ft-lbs/s I believe. You can work backwards from published
figures, for instance the ones posted here previously, to figure out how
much excess horspower you have.

Byron

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