by NoSpam <nomail@[EMAIL PROTECTED]
>
Apr 28, 2008 at 11:04 AM
Euro-Motors wrote:
> Is the horsepower the same from an airplane as like from a
> motorcycle?
> if yes i wonder why airplane engines are still so big to
> produce 100 hp against 100 horsepoer from a motorcyle
> regards
> willy
>
>
Un-geared aircraft engines turn the prop directly so the prop tip speed
becomes the limiting factor. The tip of a 6 foot prop turning at 2700RPM
is travelling at about 580mph. To get the power at low RPM you need a
big engine (or a gearbox).
Dave
