[EricH]

Originally Posted by Amo10

This is from Kipkay and you would have to make some modifications for it to work on a robot but it should give you a good start

The first modification I would do is to replace every piece of PVC with something that won't shatter if it breaks.

If PVC breaks under air pressure, it tends to shatter, and the shards go far--read pain to anybody who gets hit. Air is not the same as water, which is what PVC is rated for.

That said, I do remember hearing that ABS pipe does not have that problem. If you were to make your accumulation system of that, and leave PVC in the barrel, you should only have a potential issue if the barrel clogs (and most of the time, the clog would be the ammo on its way out of the firing end.

If you were to use PVC, I would highly suggest investing in some plywood or other similar material to build a box to contain the storage part of the system. Use the extra flat space for more cool stuff (spray paint is cheap, good place for lights, could always put sponsors or ads on it, you get the picture).