Extreme Powerizers, the Powerbow

Thats a nice principle, using an energy efficient device like a bow.
Energy in springs is equal to the force X the deflection length.
The available force comes from your legs.
So if we take that, put it to the max, and add your arm-force into the equation,
you get an extreme Powerizer, or Powerbow (see sketch).
Notice you get a long spring with the potential of containing lots of energy,
with a wire running down from the top to the feet lever.
On the top there is a bar for your hands to pull down,
to get even more energy in the spring system.
1. conventional Powerizer
2. side view of Powerbow.
3. Powerbow in action, without figure.

2007-10-02

 
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