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Unread 11-01-2006, 00:41
Rickertsen2 Rickertsen2 is offline
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Re: pneumatic launch velocity

Quote:
Originally Posted by KenWittlief
I must point out, these cylinders are not designed to be slammed into their own ends, so if you do something like this you must put a mechanical bumper or stop that limits the motion of the piston, so it cannot slam the end internally. If not, sooner or later the end will blow out of the cylinder, with a great deal of force: someone could be seriously injured.
Of course, BIMBA does make cylinders with two types of internal bumpers so that they can tolerate this sort of use, but FIRST does not allow the. With some trickery we have gotten a ball to a cylinder to launch a ball at 8m/s, with plans to go higher in an entirely FIRST legal setup. It can be done.
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Unread 11-01-2006, 00:45
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Re: pneumatic launch velocity

I should add: you would have to leave the fitting out of the far end of the cylinder, or it will restrict the air as it flows out.

this means the cylinder can only be pressurized from one end, so you will need a weak spring to retract it for the next shot. maybe surgical tubing?
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Unread 11-01-2006, 21:51
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Re: pneumatic launch velocity

Quote:
Originally Posted by KenWittlief
I should add: you would have to leave the fitting out of the far end of the cylinder, or it will restrict the air as it flows out.

this means the cylinder can only be pressurized from one end, so you will need a weak spring to retract it for the next shot. maybe surgical tubing?
nah. have the next ball push it back.
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