Re: [CAD_CAM_EDM_DRO] re: HP rating (more) my formulas' better'n yers???

ballendo@... wrote:

> Jon,
>
> This is interesting info. Could you provide a link or reference to
> back up your assertion?

Just to cite a ref, here's some info from "Reference Data for Radio Engineers",
5th Ed., Howard W. Sams, LCCN 43-14665 (That's Library of Congress
Catalog #, predecessor to ISBN).

From Chapt. 3, Units, Constants and Conversion factors,

To Convert Into Mutliply by

Horsepower Kilowatts 0.745
(550 Ft-Lb/Sec)

Horsepower Foot-Lb/Min 3.3 x 10^4
(550 Ft-Lb/Sec)

Horsepower Kg-Calories/Min 10.69
(550 Ft-Lb/Sec)

Horsepower (metric) Foot-Lb/Min 3.255 x 10^4
(542.5 Ft-Lb/Sec)

Horsepower (metric) Kg-Calories/Min 10.54
(542.5 Ft-Lb/Sec)

So, there are two horsepower standards, which I had forgotten,
with more than 1% difference between them.

Jon