Re: Power Loading

Guy Fawcett (
Tue, 16 Jan 1996 08:05:57 -0600 (MDT)

>I would love to hear Larry M's or Guy Fawcetts comments on this stuff. I think
Larry has once told me that 50 - 60 watts/lb of aircraft is a reasonable
working number for these kinds of planes. Surely there is a conversion between
watts and hp somewhere. So we could get an idea for electric power.

746 watts = 1 hp , 1/12 hp per pound at 60 watts.

>Doc Crabb has put forth the idea that if one uses fabric and paint on these
types of models that one needs more power. SImply because of the increased drag
that the "rough" surface has. This might be true but I suspect that your 8
lbs/hp figure is reasonable.

I guess that I would still find covering a WWI plane in Monokote hard to accept
although in reality the surface texture would probably be closer given the
tight weave of airplane fabric which was then filled with dope and working at a
scale of 1/6 the original. Food for thought!

Tally Ho