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.
How much did that 3 way valve cost you? Where did you get it from? Would a store like HomeDepot carry them or do I need to get them online?
Do you have some kind of pop off valve on it so that it stops puting propane in the pipe at the right PSI?
If not, then do you have some kind of pressure guage and you wait till right PSI and inject the propane?
Thanks man. Again, very clean and nice gun. Great idea on the 3 way valve.
Home depot wouldn't have a valve like that.
I would check on mcmaster.com for a valve like that
Gort,
Beautiful work, nice attention to detail. Way to innovate.
Couple of newb questions for you--I did a forum search but can't seem to find the answers.
First--the Latke style venting...is there a thread somewhere you could point me to which gives a bit more detail on how the plug thing is constructed? I can see a rubber stopper looking thing with a shoulder to it, but what exactly is that rubber piece anyway?
The Lowes near us has bronze bushings in their hardware section. I would think a half inch thick bronze bushing on the metal bracket, used in conjunction with a smooth-shafted hex bolt, would give you the smooth action that the other guys are talking about, without you needing to weld anything up or add a secondary bracket.
Second--the street elbows. My plumbing supply place doesn't have them. Wondering if you could point me to a source?
He said the valve was from McMaster, part number 6464K12. It currently goes for $18. I also found a similar one at DeeTag. For the rest of the meter, you would need a propane torch, a pressure regulator, and some compression hose fittings, which can all be found at Home Depot.
