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permanent sabot/piston in barrel

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Unread postAuthor: dart guy » Mon Jun 10, 2013 11:17 am

if i could post a pic i would but i am not sure how to post it on the web for free
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Unread postAuthor: dart guy » Mon Jun 10, 2013 12:48 pm

if you make a replacement barrell like this and then have the sabot in it should make it work but the fluting in the barrel should be a 1/2 inch above where the sabot meets the spring (a short, soft spring) to realease gases after the shot to relive pressure and spare the sabot.also the cone in the back gives a extra place for gases to press against giving it more power. Image
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Last edited by dart guy on Mon Jun 10, 2013 12:58 pm, edited 1 time in total.
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Unread postAuthor: jackssmirkingrevenge » Mon Jun 10, 2013 12:54 pm

Image

also the cone in the back gives a extra place for gases to press against giving it more power


This doesn't actually work, even though you're increasing the area, the gas is pushing at an angle away from the line of the barrel, so the net force on the projectile is the same.
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Unread postAuthor: dart guy » Mon Jun 10, 2013 1:02 pm

thanks for that i thought that it would be like if you push gas through a cone it will consentrateit alitle bit more quickly
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