"Stealth Pilot" wrote in message
...
On Wed, 20 May 2009 17:59:24 -0700 (PDT),
wrote:

On May 20, 2:15 pm, bildan wrote:
I wouldn't think so. The crank is light enough to use as a dumbbell
and that's heavier than the cylinder blocks. Just guessing of course,
but I'd say 180 lbs for 100HP which is better than an O-200.

The TCDS says the O-200-A is 190 lb. My experience with the engine
makes me wonder about the 100-hp claim. The C-90 I flew had more pull.

Dan

my docs say "rated horsepower" which makes me think that there is a
calculation used to derive the figure not an actual 2750rpm
measurement. the 74hp at 2500 rpm seems to be measured.


The rated power is achieved at standard sea level temperature, pressure and
humidity; and is also a maximum permissible limit, even when the combination
of temperature, barometric pressure and humidity might enable the engine to
produce more power than the maximum for which it was certified.