[Billfred]

I'll throw in one thing on brake and coast...

Basically, when you turn a motor with your hands (assuming no worm gears or other stuff gets in the way), you're creating electricity. What the brake function does is create a short circuit for the motor. Thus when you turn the motor, the electricity it generates is used to counter your rotation.

If you want a really simple example, get a Lego motor and some wire. If you put the wire on right, that axle should hold like the Lake Murray Dam.

(memo to self: don't use terms that only (counts...1293, 1336, 1398, that rookie team...) four teams will understand.)