On Thu, 10 Jun 2004 11:30:18 +0100, RichardS wrote:

1 BHP (Brake Horsepower) = the energy required to move 1 kilogram 1
metre in 1 second on a level surface without friction

no way. schoolboy physics:

I was more worried about a imperial unit being defined with metric
units (other than the second) and the lack of friction.

Horse power is related to lifting a given weight in a given period of
time, indeed 33,000 ft.lb per min or 550 ft.lb per second. Though the
metric mob seem to have got hold of it and redefined it as 75kg/m/s...
this should be indicated by PS rather than BHP though.

Brake Horse Power I think is heating a given amount of water a given
number of degrees in a given amount of time. The heat coming from a
brake on the output of a machine. But after a fair bit of digging and
links all ending up in the same data source just presented differently
I found:

BHP = (RPM * Torque)/5252 (Torque in ft.lbs)

Which makes far more sense than buckets of boiling water. B-)

--
Cheers
Dave. pam is missing e-mail