Joined: 15 Mar 2007 Posts: 18056 32511.66 Spud Bux
The silicon tube is slipped over the (brass) barrel and inserted into the (aluminum) chamber, of course the actual pressure bearing seal in the chamber comes from the epoxy.
The silicone allows me to put on an actual pen cap to cover the barrel without having it fall off due to the tight fit.
Joined: 15 Mar 2007 Posts: 18056 32511.66 Spud Bux
Here's my latest pengun, it's designed to fit into an existing pen without modifying the casing. In this regard external dimensions are very similar to the ballpoint refill it will replace.
As I was constrained to 6mm maximum external diameter, I couldn't use an ordinary schrader valve. Instead of making my own, I figured it would be easier to take a schrader core and epoxy it directly into the chamber. Fits nicely, but now the issue is how to fill it. I've made a ghetto fill station which is basically a sealed tube in which the whole firing unit fits, we'll see how well it works after curing.
hah that looks cool! i hav an idea for filling, the end of the chamber where is the shrader core, put the gun into a drill ja file it a little bit, then tap same screws trhat schrader has and fill it with normall shock pump?
So you never did tell us, how did you manage to fill it? That trigger looks like it works flawlessly because judging from the video, it looks like you barely had to push on the cap to make it fire.
So you never did tell us, how did you manage to fill it?
This isn't the "parker" one, I've put that on hold for now.
Quote:
That trigger looks like it works flawlessly because judging from the video, it looks like you barely had to push on the cap to make it fire.
Yep
Silly me, I do believe I have MPCS or Mass Pengun Confusion Syndrome. Just curious question if you dont mind me asking, how loud is this particular pengun? Even at low pressures of 450 psi, my pengun sounds like a firecracker and i'm thinking of making a detachable suppressor for it.
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