Way (Way) OT: lights and motors

[Kevin Cheli-Colando <kevin@minds-eye.org>]

I know this is way way off topic (except it is a question about a gear
the spins a wheel over and over and over, practically a loop), but I
figured this is an eclectic enough group that someone can probably
answer it (or point me in the appropriate direction) anyway.

I have a lighting effect with a rotating motor inside that I feel moves
too fast.  Anyone know a way to get inside something like a DJ light and
slow down the motor they have rotating the wheel (this from someone who
is practically clueless about electronics, motors and the like, but is
pretty good with a soldering iron)?

Replies off list please unless you somehow feel this would benefit the
world at large.

Thanks

Kevin