Ok, so here it is. It has a 4'10"x3" chamber and a 4'10"x2" barrel. The valve is a 2" porting barrel sealing piston. It has 2 o-rings to increase performance. The sealing face is 2 layers of truck tire tubes held on by a nice big washer and screw. It seals against a 2" coupler cut in half and the stop sanded out(so it would have a nice square sealing face). It's piloted by a 1" ball valve and has a quick connect and 1/4" ball vavle for filling.
Oh, yeah, I forgot to mention that I removed the stop from the tee and sleeved it with 3" pipe so the piston and o-rings have a nice smooth travel the whole way.
Squeak's Second(and first practical) Gun
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squeaks
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- Attachments
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- The whole gun assembled.
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- The whole gun disassembled.
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- Picture of the fill/exhause/bumper. The fill is a 1/4" ball valve and quick connect, the exhaust is a 1" ball valve, and the bumper is a thick layer of caulk.
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- Here's a picture of the inside of the tee. You can see the coupler that I glued on to keep it nice and square. It also helps increase the pressure differential once the piston starts moving. Also, you can kindof see the pipe that I sleeved inside of the tee.
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- Here's the pison. I know it only has one o-ring on it right now but I haven't been able to get ahold of some new ones. Therefor it will be o-ringless until I get some(except for this picture)
Last edited by squeaks on Sat Dec 23, 2006 6:28 pm, edited 3 times in total.
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squeaks
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Actually the piston is surprisingly light. It's not a hard wood so it's not that bad.
"Nine out of ten Americans agree that out of ten Americans one will always disagree with the other nine."
-Collin Mockery
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experament_u2
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awsome gun nice and clean
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squeaks
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Ok, since the seat is rather large there is less air pushing back on the piston. This makes it take much longer for the piston to move when your firing. Once the piston starts to move there is suddenly a large area that the air is pushing against and since most of the air is vented there is little resistance for the pistons movement. By increasing the seat it actually makes it work faster, wahahahahahaha!!!!!
"Nine out of ten Americans agree that out of ten Americans one will always disagree with the other nine."
-Collin Mockery
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Borrow money from a pessimist, he won't expect it back.
-Collin Mockery
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MrCrowley
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if you say so,but then you would think they would be even as a small seat piston would start going back before the larger seat piston and then that piston catches up in speed......oh who gives a crap,its only a few miliseconds difference.
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squeaks
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exactly. Same reason why there really is almost no difference in performance between a chamber sealing and barrel sealing piston. The big reason why chamber sealing ones usually work really well is that they must have o-rings, which also increases performance dramatically. Without the o-rings I can't actuate my piston with a 1/4 ball valve, yet Gort's mauler's easily actuate with that size of valve. Hooray for o-rings.
"Nine out of ten Americans agree that out of ten Americans one will always disagree with the other nine."
-Collin Mockery
Who's Line is it Anyway
Borrow money from a pessimist, he won't expect it back.
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MisterSteve124
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Nice job! Especially on the piston. It looks great for your first one.
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squeaks
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Funny story behind that piston. We got my physics teacher to turn a 4x4 down on a lathe, then we made one o-ring groove with a table saw at my neighbors house, got tired of making 'em that way(and ruining 2 previous pistons made of pvc) and made the second groove on the lathe. Ironically the table saw groove is the better of the two.
"Nine out of ten Americans agree that out of ten Americans one will always disagree with the other nine."
-Collin Mockery
Who's Line is it Anyway
Borrow money from a pessimist, he won't expect it back.
-Collin Mockery
Who's Line is it Anyway
Borrow money from a pessimist, he won't expect it back.
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squeaks
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Wood holds up great. Plus the caulk pad takes most of the impact.
"Nine out of ten Americans agree that out of ten Americans one will always disagree with the other nine."
-Collin Mockery
Who's Line is it Anyway
Borrow money from a pessimist, he won't expect it back.
-Collin Mockery
Who's Line is it Anyway
Borrow money from a pessimist, he won't expect it back.