Dave Liquorice wrote:
On Wed, 17 Dec 2008 08:35:01 -0000, Tim Downie wrote:

If they ever did reverse at the flick of a switch, the switch must have
been doing more than swapping live & neutral.

What does make a universal or induction motor always start and run the
same way?

Universal and induction motors are two completly different beasts

universal's are basically a dc motor, direction is hard wired in.
http://en.wikipedia.org/wiki/Univers...iversal_motors

induction motors have some sort of start circuit that determines direction
http://en.wikipedia.org/wiki/Induction_motor

--
Kevin R
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