Just finished a small combustion gun that turned out nice

Boom! The classic potato gun harnesses the combustion of flammable vapor. Show us your combustion spud gun and discuss fuels, ratios, safety, ignition systems, tools, and more.
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Sun Jan 15, 2006 12:21 pm

Just finished up a smaller launcher that still packs a good punch. It is roughly a 440ml schedule 40 PVC combustion chamber, has metered & regulated propane injection utilizing a waist suspended propane bottle connected via an umbilical hose, uses a magnetic LP bottle holder, 55" x 3/4" inch breech loaded barrel with a cam-lock coupler on the barrel for quick reloads, Swiss Diopter front sight, Pacific grip w/contoured foam, printed circuit board spark strip ignition powered by a 1.5 volt electronic grill igniter, modified plug-in trigger/grip w/contoured foam, 40mm brushless fan for better air/propane mix & quicker venting, fan powered by 13.5 volt power pack regulated down to 12 volts for extended operation, and last but not least is a plug in remote firing trigger.



<img src="http://www.pineridge7.com/MJE/images/camoflauge.jpg">

To see it all go together look here
http://www.pineridge7.com/MJE/son-of-a- ... uncher.htm
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jrrdw
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Sun Jan 15, 2006 12:42 pm

very well done, is this your own design, if so how long have you been planing it, building it ?
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Sun Jan 15, 2006 1:35 pm

Thanks, but credit for the basic design goes to Latke. We decided to take the basics a few steps further with the Cam-Lock, on-board electronics including spark strip and batteries to make the unit more portable and self contained. I also liked the idea of the waist strap for the bottle and a few other little goodies. I started fiddling with it shortly after Christmas.
034936
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Mon Oct 23, 2006 4:12 am

dude gwar!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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drac
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Mon Oct 23, 2006 4:18 am

034936, make anymore posts like that and you're gonna be in some trouble. If you're gonna post, make it not spammy bullshit.


Nice gun! I thought it looked similar to latke's, lol.

P.S. Not being fussy here, just following what the rules say.
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rna_duelers
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Mon Oct 23, 2006 6:03 am

I gota agree nice cannon and i saw the blue chamber and thought Latke straight away.I'm defineitley making one fo these babies,whats the range with this small cannon and max velocity.Just noticed its months old...damn...
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mark.f
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Mon Oct 23, 2006 6:06 am

Heh heh... already made one.
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killagorrila99
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Tue Oct 24, 2006 6:11 am

LOVERLY! I want a new combustion gun.
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frankrede
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Tue Oct 24, 2006 6:54 am

Thats a nice cannon. Man, Im jealous.
Current project: Afghanistan deployment
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malman
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Wed Oct 25, 2006 3:44 am

looks great, love the handle
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