I have been thinking of some ideas of alternative/mechanical power sources for crossbows; can you give your comments and suggestions on these ideas, as well as if you think any are feasible?
1. Torsion Springs: Two hinged/pivoting arms in the stock, powered by torsion springs;
2. Coil Extension Springs: Two hinged/pivoting arms in the stock, each having a hook past the pivot point (closer to the tip of the stock, opposite end as the butt); the extension spring would be hooked on these hooks bringing the arms together;
3. Coil Compression Springs: same as above except the spring is on the other side of the pivot (closer to the butt of the stock)
I hope you understand what I am trying to get at.
Any comments and suggestions would be greatly appreciated.