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Built a combustion 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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Unread postAuthor: serpico501 » Wed Mar 26, 2008 6:06 pm

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Last edited by serpico501 on Tue Jan 11, 2011 7:23 pm, edited 2 times in total.

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Unread postAuthor: bigbob12345 » Wed Mar 26, 2008 6:10 pm

I dont think it looks sloppy, i think it looks very good.
the only thing i will say is you have DWV parts, generally okay for combustions so im niot saying you need to take them off Im just saying that it would be better if you used pressure rated parts next time.
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Unread postAuthor: STHORNE » Wed Mar 26, 2008 6:20 pm

I for one think you did an outstanding job for your first cannon. But like bigbob12345 said, pressure rated parts would be better next time.

Otherwise, very nice cannon. It's a hell lot better than my first gun was, i can tell ya that.

Welcome to the addiction
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Unread postAuthor: pat123 » Wed Mar 26, 2008 6:22 pm

very nice
good job on a meter for your first cannon.
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Unread postAuthor: serpico501 » Wed Mar 26, 2008 7:00 pm

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Last edited by serpico501 on Tue Jan 11, 2011 7:23 pm, edited 1 time in total.

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Unread postAuthor: STHORNE » Wed Mar 26, 2008 7:01 pm

serpico501 wrote:i spray painted everything black..

how can you tell the diff from dwv to pressure just by looking at the pics? im noob, so give me some tips/what to look for on this one

thanks


Some of the fittings you used are only made in dwv form.
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Unread postAuthor: Hubb » Wed Mar 26, 2008 7:17 pm

This is very nice, especially for a first. And I like that switch. :wink:

BTW: I tend to use pressure rated parts on my constructions, however, it's not a major concern on a combustion launcher. Pieces will have NSF-PW then a number on them and that means they are pressure rated.
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Unread postAuthor: brogdenlaxmiddie » Wed Mar 26, 2008 7:19 pm

Specifically, your clean out part, and your bell reducer... ( your elbows are alsoo DWV) I've been doing a lot of studing of parts because of the fact that a Home Depot guy lied to me about the DWV stuff and I got really pissed... But, That was for a rather large pnuematic cannon :D But, From all of the "first guns" I've seen, yours is one of the nicest :!:
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Unread postAuthor: serpico501 » Wed Mar 26, 2008 7:22 pm

oh ok, well that makes it easy..

also, what changes or modifications should I make when I build another one? anything you guys would have done differently on this one (besides DWV)

thanks
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Unread postAuthor: brogdenlaxmiddie » Wed Mar 26, 2008 7:25 pm

I would have made the handles a little more ergonomic. Right now, they look like they might not feel really good when your holding them. I would of used a router to smooth the edges. But you could use a dremel or something...
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Unread postAuthor: Hubb » Wed Mar 26, 2008 7:26 pm

Use smaller parts, namely, that lantern battery. If 6 volts will work, so will 9 volts.

Take a look around a Radio Shack and see what it they have for you.
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Unread postAuthor: serpico501 » Wed Mar 26, 2008 7:44 pm

I work under a general contractor, I remodel kitchens and bathrooms mainly, but can do every step of building a house. This cannon was built with spare parts out of one of my work trailers. one day of studying some sites, mainly this one.. then two days in a row of assembly after i got off work..

the entire handle has been belt sanded and orb sanded, altough it looks rather rough, its actually pretty nice..

I admit that the handle, battery, lightswitch and box are kinda huge..

I built the cannon without a fan originally. it was after i took it apart to paint it that i decided to put a spare power supply fan in there. I built the lightswitch thing because I had nothing else, it was just laying around. The big battery is temporary until i can build some type of box for a 9 volt or a few :). BTW how long does a 9v last when powering a fan?
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Unread postAuthor: pizlo » Wed Mar 26, 2008 7:55 pm

Wow this is one of the BEST first guns I have seen. very nice work, metered propane is something that experienced people make, but you got it right!. Can't wasit to see what else you can make.
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Unread postAuthor: sjog » Wed Mar 26, 2008 7:59 pm

9v lasts OK AA rechargeable bats are better. 8 to 10 AA's in series
RC chargers are $25. ? I use the AA's in other stuff as well.
Project box at Radio Shack for batt/switch box. Stay away from Radio Shack switches ,junk. Marine or automotive .
Inventive on using what is around. I'm a carpenter so i know about picking up parts on the job.
Keep up the good work!!!!!!!!
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Unread postAuthor: Blitz » Wed Mar 26, 2008 8:00 pm

That's a pretty cool gun -- I like the crafted handle.
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