Looks great!
Celt-X built a wheeled and a pneumatic t-shirt shooter this summer (
https://twitter.com/celtxrobotics/st...24864/photo/1). pneumatic shooter has a range about the same as yours at 100 psi, and the wheeled one shoots about half as far.
*but*
the pneumatic cannon only use a 5 gallon, 100psi air tank, so we have to turn it down to less than 50 psi to keep enough pressure to shoot all four barrels, which reduces the range considerably (
https://twitter.com/celtxrobotics/st...38240/video/1). A scuba tank or carbon dioxide cylinder would work better of course. Where do you go to refill yours? How much does it cost? How many shots do you get from a full tank?
This is just one example of why you MUST NOT make engineering decisions based on assumptions. You should check/measure your parts and make appropriate design adjustments. - Stu Bloom [more] 
14-10-2016, 20:31
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