Thanks a lot! It's nice to have everything right there in one package. I posted a walk-though video above and I explain the barrel sealing as the first topic. Then I go on to explain everything else in case you're patient.

Yeah if you plan to watch any of his videos, were are quite great, just put the speed at 1.5x and then it sounds better and less soul draining.

Thanks all! Lemme do my best to answer your questions. 1) The ABS is cell core DWV pipe not pressure rated. I still use it for a few reasons. One is that it visibly deforms before failure. I have never had it fail on me, besides a 3" male adapter break because of a drop. Another reason is this video...

Hi Again Spudders! Here is the newest addition to the family! I call it "The Jackal", a silly reference to the Bruce Willis movie. [youtube]https://youtu.be/UlamXHUH2hk[/youtube] [youtube]https://youtu.be/rFpx49GSC_g[/youtube] And a walk-through of the cannon: [youtube]https://youtu.be/NwEjxlR_6lA[/...

That's definitely not junk! You should be proud of the work you put into that stock especially. So I think there might be a bit of cleverness going on with the magazine (by the sound of the video it must have one?) how does it work? I think your disappointment with the performance has less to do wit...

It's not huge like VERA where it can use Wookiees as ammo, but It does have a 2" barrel for potatoes! I will upload a compilation video soon so you can have a better look at the performance.

It is fun to dry fire it without a barrel too!

I like the ergonomics so you can hold the tank with one hand and use the elbow as a pistol grip and the ball valve handle as a trigger. Did you try out different pilot valves? It seems like you could get away with a smaller valve than a 1/2" ball valve.

That made me laugh! It's a crocheted stuffed Domo Kun that I used to prop up the cannon for that picture. This cannon is designed to be used by Wookiees not on them.

Hi Spudfiles, I made an advanced combustion cannon to complement my pneumatic cannon Bigfoot! I call it the Wookiee Cannon :D [youtube]https://youtu.be/h1nqR_TG2SM[/youtube] There is nothing too novel about this cannon I built because I have seen the same construction techniques done by other users ...

Hi Potato Launching Connoisseurs! This is my latest cannon which is a simple ball valve pneumatic launcher. The most notable features are the ABS DWV pipe construction and the spring loaded triggering mechanism. [youtube]https://youtu.be/fY80vxi4enw[/youtube] Construction: So let's talk about the A...

The next installment is TBD and will be a completely new cannon! I decided to scrap Chappy since it doesn't work reliably due to insufficient venting and I don't want to just end up making a regular old advanced combustion cannon. Plus the tank is busted after the hydrotesting. My next cannon will b...

Ok Gotcha! Check out the thread below this one. I made the cannon it's it's called Chappy. I hydrotested the chamber though out of curiosity and it failed. See details in the thread.

Oooh now I'm confused. I think rna-duelers is talking about a carburetor fueling system like in an engine?

I have tested this set up with a water bottle chamber in the video and with my garden sprayer cannon (Chappy) only. And those chamber shapes seem to work just fine. I don't really have any measuring equipment that I could use to measure a performance difference between chamber shapes. My guess is th...

Thanks Mark! I think a chamber fan would boost performance, but I think that the gas is mixed thoroughly enough by going through the nozzle and siphon tube. I feel that the convenience and simplicity is worth the slight decrease in performance. **** UPDATE! Some learning points: This fueling design ...