Whats the best capacitor for this setup? Answered

Whats the best capacitor to store charge and release slowly, i want to turn a motor which generates dc into the capacitor and then the capacitor releases this charge into another motor at the flick of a switch for a long time , i have already found a circuit perfect for this but its just finding the capacitor, or should i just use a rechargeable battery, p.s i would still like to know which capacitor would be good for this.