Hey guys, Taking some serious inspiration from SB15's TBMA2.0 and Mr.C's Mjollnir, I have been working on a hybrid of my own. I have been using mainly the pictures in SB15's thread to go on, and have learned a lot about hybrids and pistons from the forums here, and I feel like I am ready to tackle t...

Okay, good to know. Thanks. I figured they would withstand more than 150 psi, I just didn't know how much more. I may try and do it with 300 psi fittings just to be sure, if I can find enough at a decent price. I definitely have no plans on exceeding 10x just based on what I've seen from yours and S...

So, I am thinking about building a hybrid type cannon similar to this style. What kind of galvanized fittings are suitable? It seems like the most common I can find are Schedule 40, 150 psi rated. I'm guessing this is not enough. I have found a few rated at 300 psi, and the 3000 psi forged iron fitt...

Bit of a necropost, but I wanted to show you guys a little bit of an update on the Spudchucker, First off, you will notice a nice new paint job. Was going for a bit of a military look, white stencil lettering and whatnot. This was done using Krylon Fusion sparypaint: https://dl.dropbox.com/u/2533183...

The first gauge is just the pressure that the regulator is set at. The second gauge is the pressure in the meter pipe. If the regulator/meter pipe won't build 40 psi anymore, I'll have to change the propane cylinder, or do multiple injections until the bottle is empty I suppose.

I'd just like to point out that the igniter won't work if you place a switch in the circuit with the battery. You can connect the battery directly and nothing will happen. The switch needs to be placed between the two spade connectors located in this picture, circled in red. Or else put a switch in ...

Hey all, I'd like to show you guys my second potato cannon (first attempt at propane), the Spudchucker II. Features: - Combustion type - Propane fueled - 4" x 26" dual layer combustion chamber - 2" x 60" barrel - 2" x 26" barrel - 3" x 36" barrel - 2" barrels are sharpened with barrel knives - Alumi...