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First Metered Combustion

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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First Metered Combustion

Unread postAuthor: motorfixer1 » Thu Sep 16, 2010 6:11 pm

Finally got around to finishing my first metered propane combustion cannon this week. Test fired it and it seems good, shoots a tater right through plywood at about 25'. The only thing weird I noticed is that liquid propane flows out in to the regulator as soon as the unit is turned in the firing position. Not sure if this is an issue or not. This weekend I will test fire at long range, super excited. The 3" pvc section on the chamber is 12" long for refrence.
Specs include:
98.95 c.i. chamber
54" X 1.5 i.d. spud cutting barrel
45kv stun gun ign.
Dual spark gaps .250 each
6" meter pipe
pressure regulator
60mm chamber fan
home brew tank mount
-6 braided line from Summit Racing
8AA and 2 9 Volts located inside the capped section of the handle
ignition source is located in the front section and the two white leads are the supply for the spark strip (50kv safe lead wire from work)

I should have taken photos during construction so the spark strip and inside of the chamber would be included in the photos. Questions, Comments, or suggestions would be greatley appreciated.
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Attachments
Combustion Potato launcher pics 015.jpg
Combustion Potato launcher pics 016.jpg
Combustion Potato launcher pics 017.jpg
Combustion Potato launcher pics 019.jpg
Ignition arm and fan power panel

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Re: First Metered Combustion

Unread postAuthor: Heimo » Thu Sep 16, 2010 7:03 pm

motorfixer1 wrote:The only thing weird I noticed is that liquid propane flows out in to the regulator as soon as the unit is turned in the firing position.


changing the orientation of the propane tank should help with this...
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Unread postAuthor: Lockednloaded » Thu Sep 16, 2010 10:10 pm

The meter and the integration of the electronics is amazing, where'd you get that braided hose, it looks amazing.

I'm not a huge fan of the handle, I lean towards more stream-lined launchers, but if it is ergonomic and you like the look then keep it.
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Unread postAuthor: jackssmirkingrevenge » Thu Sep 16, 2010 10:42 pm

Lockednloaded wrote:where'd you get that braided hose, it looks amazing.


original post wrote:-6 braided line from Summit Racing


;)

Very neatly made for a first effort, awaiting your damage pictures/videos :)
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Unread postAuthor: Lockednloaded » Thu Sep 16, 2010 10:48 pm

sorry, I didn't realize summit racing was a store, I assumed it was the brand :oops:
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