"Brian Gaff" wrote in message
...
Yeess, often these things are so bespoke it is really pointless trying to
re utilise them.
I heard a good one the other day, apparently thedisc rotaion motors of cd
and DVD drives are being used by aero modellers for driving the props
round after suitable moods and a new driver circuit.

Good luck and I hope they don't fly apart on them lithium batteries they
seem to use nowadays.

We've been using CD motors on aircraft for the last decade or so, they were
the first cheap way to get a brushless motor in the hobby,

Nowadays you can buy ready made very powerfull brushless motors for peanuts
it's hardly worth the bother, tho they do get sold with kits where you
re-wind the motor to get a rev range and power suitable for a larger prop.


The li-po batteries going up in a ball of flames is a good special effect
for war birds, that's if you are re-creating being shot down and crashing

I've been using li-po batteries for about 10 years now, treat them with
respect and they are fine, and they are the biggest advance in model flight
for a long time, so much power in such a light weight package... to think
when i first got an electric model plane, it could hardly get off the ground
due to the weight of the ni-cads, flew 4 minutes then the batteries were
dead,

Nowadays i fly for half an hour on a li-po pack, and have to use lead
weights to adjust the COG, as the pack isn't heavy enough like the old
ni-cad packs were.