I just had a question about the propane meter I just built. First I have a 3 1/2 ft combustion chamber and a 10 ft barrell, would a 3/8 10 in metering pipe be enough? I know there are calculations but it seems a pain in the ass to fill it up with water and convert into milliliters. I wasnt sure if i...

I just purchased a craftsman 3/8 regulator with gauge. http://www.sears.com/sr/javasr/product.do?vertical=TOOL&pid=00916022000&bidsite=&BV_UseBVCookie=Yes I just wanted to know if you think it would work. The only thing I dont know is that there are 4 ports. I can understand 3 but 4 im not sure. The...

Can anyone tell me if they think a spud gun wih a 5ft, 2in pvc barrel and a 4ft, 4in pvc conbustion chamber would be TOO big, wouldnt work or impracticle, and how much propane (without propane meter or injection, just a bernzematic torch) would be needed to fill the chamber without killing myself.

I have been making potato guns for about 1 year now(Built 2 guns), which is a long time to me, but im sure theres people with alot more experience. For the past year i have been getting my info from what little web pages I can, until I found this forum. I was hoping someone could answer some quick q...