Quote:
Originally Posted by Anirchy
A motor moves high torque gears to pull back an object (threaded on the bottom to mesh with gears) against a spring and are then let loose to push the object forward.
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Stand-out mechanically simple? The devil is in the details:
1) how do you design this so that you have the same potential energy every time you pull the "object" back?
2) how do you hold the object in the armed position once it is pulled back?
3) how do you fire the object (release it free from the motor and the gears)?
4) how do you load the bounder into position?
... and so on.