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Unread 20-01-2012, 07:50
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Re: pneumatics or motors?

Quote:
Originally Posted by DavisDad View Post
The 10 CFM fills an accumulator (reservoir) until charged to about 2-3 PSI. The compressed air is released directly into the end of the cannon; like a potato cannon. The air is released very fast and the 2 psi acts against the 50 sq.in. surface of the ball = 100 lb force at initial release. My calcs say I need about 15 ft-lb energy to accelerate the ball to about 31 ft/sec. The size of the accumulator will determine the final exit pressure on the ball. Of course leakage around the ball is a big variable.
Ah, I misunderstood.

I still think that you should check to see if the valve/hoses will flow enough air fast enough to do what you want. Though I'm still not convinced that an air-cannon is legal.
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