In article ,
Arfa Daily wrote:
It's likely a pretty inefficient design that requires two horsepower to
lift some dust.

I really don't believe that. We have been making electric motors for 150
years or more and I'm pretty sure - particularly in these days of
'efficiency' - that manufacturers will have striven to get the most
power out of their motors for the least power in.

Why should they 'strive'? They're not paying for the electricity. But they
are for the motor, so the cheaper, the better.

I'm not convinced the speed the average vacuum cleaner motor/fan runs at
is ideal. More likely just convenient. They certainly make enough noise
and get hot.

--
*Is it true that cannibals don't eat clowns because they taste funny?

Dave Plowman London SW
To e-mail, change noise into sound.