Smaller Pnuematics Storage Tank

[Robodragons4630]

From the way I understand the rules we are allowed to use any air tank as long as it is COTS. Am I understanding this correctly and if so could my team use a smaller air tank.

[Jon Stratis]

R77-K allows almost any COTS storage tank, provided it meets other rules, such as R75's limitation on rates working pressure for all pneumatic items.

[Mike Bortfeldt]

Speaking of smaller air tanks, does anyone know where we could purchase a plastic air tank in the 300-400 ml range? (a link would be great!)

Thanks,
Mike

[jwfoss]

Coast Pneumatics has a large number of polypropylene tanks available.
Clippard also has a selection of metal air tanks.

[GeeTwo]

You probably wouldn't want to do this for competition, but if you're trying to figure out /verify how much tank you need, you can use a (probably large) pneumatic cylinder as an air tank. If you use the top (return) side, you can use nearly the full stroke x bore of the cylinder without moving anything. You can even tweak the volume by mechanically locking the output shaft in a given location. In fact, clippard's metal tanks are just cylinders with two "bottom" ends and no piston or rod; we have several of these and used one in 2014.