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8 ft diaphragm cannon, Would it work?

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8 ft diaphragm cannon, Would it work?

Unread postAuthor: Torch » Thu Jun 29, 2006 6:01 pm

I plan on making my first spudgun this week and was wondering if a 8 ft cannon would work with a diaphragm valve made with a tupperware lid/rubber. Hate to bother ya guys with a newbie question :) Thanks!
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Unread postAuthor: FiveseveN » Thu Jun 29, 2006 6:34 pm

Would that be 8' inner or outer diameter? :lol:
I don't see why it wouldn't work, provided you keep the ratios right (not only chamber volume to barrel volume, but also bore to lenght).
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Unread postAuthor: Torch » Thu Jun 29, 2006 6:39 pm

:lol: 8 ft long, might try some neoprene also if I can find it. I think that would work better. Thanks for your input :)
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Unread postAuthor: SpudStuff » Thu Jun 29, 2006 7:50 pm

start small. just jumping into something that bug is a bad idea. you are sure to run into problems
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Unread postAuthor: spudkpi » Tue Aug 01, 2006 11:06 pm

yea build something smaller and gradually get into the larger things...
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Unread postAuthor: Velocity » Tue Aug 01, 2006 11:23 pm

Some more dimensions would be helpful... perhaps a paint diagram

I have built several piston valves in the past (coaxial and barrel sealing), and I have found that the most important thing is to get a good sealing material. You can try to find good material around your home, and you may get lucky. I just bought stuff off of mcmaster that I KNEW would work, and I am glad that I did
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