Re: Horsepower (was Re: Metric Time (was Re: Why not 13 months? (Was La Systeme Metrique))
Bill Bedford (billb@mousa.demon.co.uk)
Tue, 17 Oct 95 11:16:37 -0000
In article <45ugr9$jti@medici.trl.OZ.AU>, Jacques Guy writes:
~
~ taibi@ix.netcom.com (Solomon Taibi ) writes:
~
~ >Must be you never met a horse.
~ >1 Horsepower == 33,000 foot/pound/minutes
~ >Sounds about right to me.
~
~ >Admittedly I prefer metric, but let's not be snide about it.
~
~ I was taught that 1 cheval-vapeur = 75kgm/s which is:
~
~ 75/0.454/0.3048*60= 32,519.3382 ft*lb/min
~
~ Much later, I read (I think it was in New Scientist), that
~ a horse has a power closer to 12hp, early automotive
~ manufacturers having deliberately grossly underrated a
~ horse's strength to sell their wares.
I though it was James Watt or one of the early loco builders who defined
horsepower -- perhaps they had smaller horses then?
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Bill Bedford Designer of Photo-Etches
billb@mousa.demon.co.uk Owner of Brit_Rail-L list
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