Just another idea that I use....being that I use a 4" clean-out cap on mine, but got tired of the on/off afetr each shot, I added a simple pipe nipple, gas valve and a female quick release for my air compressor and after each shot, I just open my gas valve for a few seconds at about 15 P.S.I and it ...

I would second that...although I have not had an official run in with the law - yet, I think I am getting close to it...Just do yourself the favor and call the local law - the worst they can say is it is illegal and you will know. I am told that in my area, it is perfectly legal to fire a handgun an...

Easiest way for me.... If you can, remove your barrel and fill the entire chamber with water. Now, slowly pour that water into a large measuring bowl, or cup and record the ml of water. Now, use the calculator on BurntLatke.com - that is what I used. Also, be sure to red the article on BurntLatke.co...

Thanks all...as for the work desk, that was a pic before the real work began, it got much worse. Now the neighbors - most of them are real cool and have been watching this project and come out when I test it - but I thnk I stepped on someone's nut$ because I had my first slow-drive-by from the Chero...

Well, thank you all - needless to say, this little project went WAY over budget - however....COMPLETELY worth it....
The wife begs to differ though...

Quick update - the mount has been painted now.....I think she is ready to roll.....

That would explain a lot.....I wondered how an open/close valve regulated anything - but the packaging said it was......oh well, lesson learned......Thanks.

Live in the northern Georgia, out in the sticks - nobody cares about noise... As for not painting the stand yet, it is one of those work-in-progress things. I am adding a few things to it before the paint job...I built a stand-off for the trigger so I am not right on top of it when I fire it - still...

Here she is...my first propane-metered combustion cannon. Simple stats: 4" x 24" SCH40 PVC 220PSI rated chamber 2" x 48" SCH40 PVC 280PSI rated barrel Detachable barrel for breach loading and portability Detachable BBQ Ignition (safety first, right?) 4" 12V chamber fan. 20" of 3/8" pipe for the prop...

Thanks for the replies. Seems these are abit more durable than I expected. I guess I can submit a picture, but it is really very plain and "beginner-like".... Pimpmann22 - I don't understand your statement.... For future refrence dont just use us for your answer generators (your questions today I th...

Fellow Spud Chuckers - I have just completed my very first combustion launcher - thanks, in part, to this very forum!! But I have some questions I can't find the answers to in here... Quick details: All SCH40 - 3" chamber, 24" long - 3" to 2" reducer - 2" barrel 36" long. 3" cleanout on the end of t...