How do I make a turret winder?

I saw the video of The Foofinator's handle pump TR-8, and I noticed that he wound up the turret with a wheel on the end of the turret. When he turned the wheel to wind the turret, the turret didn't move. How does it work, and are there instructions for the turret winder?

tytiger335 years ago
Here are the instructions for it.
Hope this helps
~KnexBuild~ (author)  tytiger335 years ago
Thanks! It did help. I made the Handle Pump Turret Rifle, but the two grey connecters that are used to pull back the pin break off alot.