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First Cannon

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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First Cannon

Unread postAuthor: itlbtu2 » Tue Sep 09, 2008 10:03 pm

Hi to all and thanks for such an informitave site. I have been a lurker for the last few days now and I finally got my cannon finished up. I wanted to show a picture of it. It is just a basic t-shirt cannon. 3" x 20" barrell and chamber with a 3/4" orbit sprinkler valve. I'm not real sure if it is 100% correct, but it does fire approx 35-45 yards @55psi. at any rate I'm real happy with it and I wanted to say thanks for a great site.

BTW: I have now installed a 115psi relief valve where the pipe plug is shown.

Any comments are appreciated

Thanks

Dusty
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Unread postAuthor: ALIHISGREAT » Wed Sep 10, 2008 1:33 am

the valve is a little small for the bore, but its allright for a first build :wink: and nice to see saftey is a concern as you installed a pop-off.

whay pressure do you plan on using it up to,i guess 100psi?
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Unread postAuthor: itlbtu2 » Wed Sep 10, 2008 8:17 am

yes around 100 psi.
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Unread postAuthor: psycix » Fri Sep 12, 2008 12:39 pm

Its quite a decent build for a first one. :)
That valve is REALLY limiting flow and thus power, so for more power, use a larger diameter valve next time. (At least the same diameter valve as barrel for the best performance)
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Unread postAuthor: itlbtu2 » Fri Sep 12, 2008 4:32 pm

(At least the same diameter valve as barrel for the best performance)


How do I go about a 3" valve? Just curious
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Unread postAuthor: MrCrowley » Sat Sep 13, 2008 1:03 pm

itlbtu2 wrote:
(At least the same diameter valve as barrel for the best performance)


How do I go about a 3" valve? Just curious

3" Sprinkler valve? Check eBay every now and then and any local irrigation stores. You can get them online but they'll cost a lot. Some people even find them at dumps and recycle centres for only a few dollars.
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Unread postAuthor: brplatz » Sat Sep 13, 2008 6:09 pm

You could build one yourself
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