Capacitor, power caps and Shottky diods?

[Spihc]

Hi folks,

I'm using a GM v12xc esc, and has a couple of questions.

1. The Shottky diod, should it be placed on the +/- poles on the ESC, or directly on the motor? Why is one way better then the other?

2. Using a rather old motor, wich i'm 99% shure that dont have any capasitors, are they placed on the motor? If shottky is placed on motor, they wont fit!?

3. Power Caps, what are they, where do they go, what do they do and why!?

Any help is appreciated, have only been using mild motors (19-27t) and reversable esc's before, so Im 100% green on this.

Regards

Tobias