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Please evaluate my canon.

Post questions and info about combustion (flammable vapor) powered cannons here. This includes discussion about fuels, ratios, ignition systems, safety, and anything else relevant.
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Please evaluate my canon.

Unread postAuthor: GreenLumos » Mon Jan 30, 2012 2:45 pm

Barrel 2" = 90 cm
Chamber 4" = 50 cm
guy claims up to 25 bars pressure <-- i think he's an idiot
4mm thickness PVC equivalent of sch30 4" / sch40 2", no idea which type of PVC though
pipe has no writings to rate pressure..

typical spray and pray with end cap
<table><tr><td><a href="https://picasaweb.google.com/lh/photo/gYr2HxORrT5CZM6V0vRtt5TCG8OFR7MtlMjzXZEowqU?feat=embedwebsite"><img src="https://lh6.googleusercontent.com/-u7sOXt_KFCY/TybXAjytwUI/AAAAAAAAAss/6DIy4AMUN0I/s144/DSC00359.JPG" height="108" width="144"></a></td></tr><tr><td>From <a href="https://picasaweb.google.com/105485633621868275520/Spud?authuser=0&authkey=Gv1sRgCLHv5f-B26bL1AE&feat=embedwebsite">Spud</a></td></tr></table>
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Unread postAuthor: warhead052 » Mon Jan 30, 2012 2:46 pm

What's with all the tape? Please tell me that its not holding the cannon together. If it is, scrap it and rebuild. Other than the tape it looks pretty good.
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Unread postAuthor: evanmcorleytv » Mon Jan 30, 2012 5:57 pm

It looks fine!! But it will not hold 25 BAR.
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Last edited by evanmcorleytv on Tue Jan 31, 2012 5:19 pm, edited 1 time in total.

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Unread postAuthor: Daltonultra » Mon Jan 30, 2012 11:55 pm

What in the names of the gods is that brown goop being used as glue?
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Unread postAuthor: evanmcorleytv » Tue Jan 31, 2012 5:20 pm

Daltonultra wrote:What in the names of the gods is that brown goop being used as glue?


Orange PVC cement.
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Unread postAuthor: GreenLumos » Wed Feb 01, 2012 7:28 am

Orange PVC Cement indeed....the tape is for incase it explodes, to reduce sharpnel.

it fired the cement gas...twice, but couldn't propagate a spark afterwards. back to the drawing board.
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