Re: [PSUBS-MAILIST] Horsepower

[Dave Everett <deverett@idx.com.au>]

At 20:59 26-01-00 EST, SeaLordOne@aol.com wrote:
>Teammates,
>
>Please help me with this one.  According to an article in BOAT/U.S. Magazine 
>(January 2000, pages 24-25), electric motors somehow provide three times the 
>performance of internal combustion engines.  How can this be?  Horsepower is 
>horsepower is horsepower, isn't it?
>
I think the article should say 'efficiency'. In an ICE the efficiency is
about 30% but you can get electric motors with efficiencies of 98% and
70-90% is not uncommon.

Dave Everett