My newbmatic gun
Hey guys. Just found out about this section and i guess this is where i post my pics. Messy job i did with the primer, but this is my second one with a modded sprinkler valve and using the chamber as a butt. Would like some rates, advice and opinions on it. Thanks.
- Attachments
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- Has a 3/4" cpvc pipe connected to it. Paintballs fits nicely in it.
I also got an aluminum barrel that is just perfect for marbles. (pics not included)
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- A paintjob could cover up the mess.
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- Shot at 120psi. 729 feets per second.
Could been better.
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- Paintball damage to a 1/2" thick plywood. Same shot at 120psi.
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iPaintball
- Corporal 2
- Posts: 695
- Joined: Sun Mar 04, 2007 8:37 pm
Nice gun! Painting it would make it look much better, but it's your gun. You could've used a nipple between the chamber and valve, but all that does is make it more compact.
Summer Projects:
CO2 tank hybrid: Gotta fix the meter
Cane gun: Needs a pilot/fill setup
1.5" piston valve gun: Almost done
CO2 tank hybrid: Gotta fix the meter
Cane gun: Needs a pilot/fill setup
1.5" piston valve gun: Almost done
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dauphinoise potato
- Specialist
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- Joined: Sun Jul 15, 2007 8:36 am
That's a really nice lookin' cannon you 'ave there. Have you fired anything else apart from marbles and paintballs?
It's all a bunch of tree huggin' hippie crap!
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sergeantspud2
- Specialist 3
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- Location: So Cal
Good lookin gun.
Does the marble clock in at higher or lower speed than the paintball?
Add a few more primer splashes and it could be an abstract masterpiece.
Does the marble clock in at higher or lower speed than the paintball?
Add a few more primer splashes and it could be an abstract masterpiece.
Always rely on Murphy's Laws 4.If you have enough grease & a big enough hammer, you can put anything... anywhere
3.If all else fails, hit it with a big hammer
2.Matter will be damaged in direct proportion to its value
1.If anything simply cannot go wrong, it will anyway
Hey guys. Thanks for the comments.
Yeah, the paintball got the marble beat by roughly 200fps!
I also tried to fire empty co2 cans left-overred from my little bro's pellet guns. Used a 3/4" sch40 pvc pipe to fire it. I was only able to get around 220fps with that. It could have been that the barrel was to large for it. I'll try to fire that with a napkin-wrapped sabot or something similar in the morning.
I did the math and a 3g paintball going at 729fps (222.2 meters per sec) would give it a muzzle energy of 74 joules. I don't know the exact weight of the 0.59" glass marbles so it's pretty tough to calculate the marble's energy,
Yeah, the paintball got the marble beat by roughly 200fps!
I also tried to fire empty co2 cans left-overred from my little bro's pellet guns. Used a 3/4" sch40 pvc pipe to fire it. I was only able to get around 220fps with that.
It could have been that the barrel was to large for it. I'll try to fire that with a napkin-wrapped sabot or something similar in the morning.I did the math and a 3g paintball going at 729fps (222.2 meters per sec) would give it a muzzle energy of 74 joules. I don't know the exact weight of the 0.59" glass marbles so it's pretty tough to calculate the marble's energy,
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TwitchTheAussie
- Corporal 5
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Your pretty good man. Also who really cares about primer stains any way 
Its pretty sweet. I look forward to more from you
Its pretty sweet. I look forward to more from you Raise your horns if you love metal.
CpTn_lAw
-spudgunning is like sex, once you've tasted, you can't wait til next time.
CpTn_lAw
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jackssmirkingrevenge
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Your use of primer is very modern art but interesting and original configuration and impressive performance, well done
hectmarr wrote:You have to make many weapons, because this field is long and short life
nice gun good job...
question: 730fps seems a bit optimistic to me, may i ask how far away the barrel's muzzle was from the chrony? also wat ammo was used for this shot?
not doubting it but im just curious
peace
question: 730fps seems a bit optimistic to me, may i ask how far away the barrel's muzzle was from the chrony? also wat ammo was used for this shot?
not doubting it but im just curious
peace
I appreciate the comments guys!
Modding the sprinkler valve made a tremendous difference in performance.
It's normal to doubt. I was expecting much better performance when i switched to a modded sprinkler valve. But I couldn't believe it when the chronograph displayed those numbers. Had to fired several more paintballs just to make sure the number weren't wrong and was getting readings at 716fps to as high as 740fps so far. When i was first shooting through the chronograph at 120psi, there were no backstop but there was a wooden fence about 3/8" thick and i thought it could take the hit but it has a couple of holes in it now.
I'll see if it can fire at 150 psi, but my sprinkler valve is rated to 125psi though.
Modding the sprinkler valve made a tremendous difference in performance.
Hi chaos. The ammo i used to achieve 730fps was the low quality paintballs, the type that nobody would ever use in a game because it has a tougher skin, so it hurts like hell even at normal paintball speeds, and sometimes explodes in the barrel. The barrel's muzzle was about 3 to 5 yards away from the chronograph.chaos wrote:nice gun good job...
question: 730fps seems a bit optimistic to me, may i ask how far away the barrel's muzzle was from the chrony? also wat ammo was used for this shot?
not doubting it but im just curious
peace
It's normal to doubt. I was expecting much better performance when i switched to a modded sprinkler valve. But I couldn't believe it when the chronograph displayed those numbers. Had to fired several more paintballs just to make sure the number weren't wrong and was getting readings at 716fps to as high as 740fps so far. When i was first shooting through the chronograph at 120psi, there were no backstop but there was a wooden fence about 3/8" thick and i thought it could take the hit but it has a couple of holes in it now.
I'll see if it can fire at 150 psi, but my sprinkler valve is rated to 125psi though.
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jackssmirkingrevenge
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I doubt it will explode, 25psi extra isn't much. For a lightweight projectile like your paintballs and the setup you're using, I find those velocity figures believable.I'll see if it can fire at 150 psi, but my sprinkler valve is rated to 125psi though.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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spud yeti
- Sergeant
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Nice looking cannon. The primer reminds me ofJackson Pollock's art.
Otherwise, it looks really good, with some great results too.
Otherwise, it looks really good, with some great results too.
really good quote/phrase here
Rofl spud yeti. I guess i'll take that as a complement.
I'll try to keep the mess low on my next gun.
So far, i charged the gun to 150psi. One thing i did notice was how the tire valve was trying to pop out. I guess it was a good thing i used the thicker 1.25" valves instead of the regular 0.45" valves. Anyways, a few shot and i got around 800fps at that pressure. I think that will be my psi limit on this gun for now.
I'll try to keep the mess low on my next gun.
So far, i charged the gun to 150psi. One thing i did notice was how the tire valve was trying to pop out. I guess it was a good thing i used the thicker 1.25" valves instead of the regular 0.45" valves. Anyways, a few shot and i got around 800fps at that pressure. I think that will be my psi limit on this gun for now.