Re: DIY mover info please
I actually just completed one. I was created by modifying an old hay elevator a friend had that was just rusting in his barn. It's electric, but we are going to run it off of a generator...
I build a carriage for it that fastens to the chain by a post that I welded onto it. It's held to the post with two aluminum pop-rivets that are meant to shear if something goes wrong. The drive system is pretty powerful and it would mangle itself if the controller malfunctioned for any reason.
I had to hack the motor a bit. It's and AC type that isn't meant to be reversed on the fly. You have to reverse the start capacitor and the motor has to come to a complete stop before it will change direction even is you reverse the start capacitor. So, I build a circuit board with some relays and a small microcontroller that wait 6 seconds after it stops, before it starts moving in the other direction.
There are plates welded in two places on the chain that trigger inductive proximity switches when it reaches the ends.
The target is a DIY shoot-n-see that is made by stretching a white kitchen garbage bag over cardboard and painting it black.
I also have some electronic targets that detect hits and flash a strobe. Here is a vid, it just flashes and LED, but the relay can switch something much bigger. Works with copper and lead bullets (vid is CB longs) and bullets coated in hBN. Haven't tried moly...
http://s23.photobucket.com/albums/b356/k...nt=P1050327.mp4
There are obviously cheaper and easier ways to go about this and I wouldn't recommend this as the way of going about it from scratch. It was just convenient for us since we already had most of the stuff we used to make it and a tractor to move it around.