PeterD wrote:
On Sun, 31 Dec 2006 04:01:11 GMT, "Roddy Meatstick.............."
wrote:

The vacuum cleaner motor makes just as much noise without the fan
attached to the shaft. It's the cheap motor that makes all the noise. If
they put a geared up induction motor in there it would be a lot quieter.
Why don't they do that?

Cost, reliability, efficiency? That small vacuum motor is quite
efficient, a compariable induction motor of the same power would be
much larger, then the added cost of a high speed gear box (and its
size)...

Some would pay the added cost for quietness. But I guess if you have
central vac with the motor in the basement or outside you get the quiet.
Portable quiet would be nice too.