Why only paintballs |
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Langside
Member One strike, language in link 2/20 Joined: 09 November 2006 Location: Scotland Status: Offline Points: 302 |
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Right he said that it was NOT paint in the marker. That is why I said he COULD has been killed.
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Mack
Moderator Group Has no impulse! control Joined: 13 January 2004 Location: 2nd Circle Status: Offline Points: 9906 |
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I didn't see in the article where it specified the gun was hot or the velocity screw was removed. Neither was the type of marker specified. However, if the marker was a Spyder clone, removing the velocity screw would decrease velocity as it decreased the pressure on the spring and would not result in a hot gun. If the marker was a Tippmann or BE, removing the velocity screw would also decrease velocity as air pressure would be lost through the screw hole. Of course, neither of these may apply if there is further info I have not found yet. Edited Note: Additionally, the gun would probably not need to be hot for a pointed object to be dangerous. The much smaller intial contact area of the projectile concentrates the kinetic energy onto a single point as opposed to dispersing it like a paintball shaped projectile does. Edited by Mack - 15 February 2007 at 1:40pm |
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usafpilot07
Moderator Group FreeEnterprise's #1 Fan & Potty Mouth Joined: 31 August 2004 Location: Tokelau Status: Offline Points: 4626 |
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Removing the velocity screw on a Tippmann(ProCarbines at least) increases velocity. Riot squads using pepperballs and other deterrents use this method to increase effectiveness. The gun used was some type of tippmann, as the case was all over PBN when it happened.
He said the "bruce," and while I don't know what he is referring to, I would assume it is slang for paint. Seeing as he is mentioning playing in an actual game, and not just goofing off. Edited by usafpilot07 - 15 February 2007 at 1:51pm |
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$400 98custom
Member Joined: 25 January 2007 Location: United States Status: Offline Points: 50 |
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the velocity screw doesnt matter. the idiot was still dumb enough to put a foreign object into the gun and shoot it at a little kid. ppl r just too dumb nowadays
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<giant sig = bad>
BACK TO THE USSR |
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usafpilot07
Moderator Group FreeEnterprise's #1 Fan & Potty Mouth Joined: 31 August 2004 Location: Tokelau Status: Offline Points: 4626 |
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If the velocity screw hadn't been removed, the gun could have been shooting at LEAST 150 fps slower.... |
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Mack
Moderator Group Has no impulse! control Joined: 13 January 2004 Location: 2nd Circle Status: Offline Points: 9906 |
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The velocity screw on stock Tippmann 98s, A5s and X7s works by interrupting the airflow between the valve and the chamber. In essence, when the screw is screwed farther in, it blocks the air passage and slows the rate/volume of air release. The same amount of air is released, but the rate is effected. It's been awhile since I got rid of my Pro-Carbine and 68 Carbine, but I seem to remember them working in the same way. With this in mind, you can crank the velocity up on a Tippmann by turning the screw out. However, once the screw no longer protrudes into the air flow, no further gain in velocity is achieved. In fact, it is contended that a slight velocity loss could occur from going past this point (approximately 4 turns out from all the way in) because a negative void is created in the air chamber which allows further expansion of the released propellant, thus reducing chamber pressure. At a certain point, if the screw is backed out far enough, air leakage around the velocity screw could also have a negative effect on velocity. Now, if you remove the screw entirely, you just left an opening of approximately 7mm in diameter for your propellant gasses to leak out of without propelling the projectile. When you consider that the approximate barrel diameter is 20mm, you have avout 25% of your propelling gasses being wasted by direct venting into the atmosphere. All in all, I don't see how removing the velocity screw from a Tippmann would increase the velocity. As a side note on the Pepperball markers, I remember reading when they first came out that the internals/springs had been strengthened for Law Enforcement use. They had a warning at the time that the markers could not be safely used for regular paintball play. |
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usafpilot07
Moderator Group FreeEnterprise's #1 Fan & Potty Mouth Joined: 31 August 2004 Location: Tokelau Status: Offline Points: 4626 |
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The negative effect of the void would be negligible after the first few shots. This is just a rough sketch, but it should show what I mean. In the top image, it would represent having a velocity screw screwed in. This forces air molecules through a reduced space. But, in the lower image, it shows that the amount of airflow gained by removing the velocity screw is greater than the amount of air molecules that can escape through the gap. |
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Mack
Moderator Group Has no impulse! control Joined: 13 January 2004 Location: 2nd Circle Status: Offline Points: 9906 |
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It's a nice picture, but basic math and fluid dynamics prove it incorrect. One thing I should have mentioned earlier that probably makes the velocity argument moot anyway is that it is doubtful that a good screw to barrel match was achieved. It wasn't the velocity that made the screw dangerous, it was its shape and density. Edited Note: Your pics prove my point. Note in your illustration that if you back the velocity screw out to where it is flush with the inside of the tube, you have unobstructed and complete air flow. In the second pic, where it is removed, you still have unobstructed airflow but not complete airflow. Edited by Mack - 15 February 2007 at 9:29pm |
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Langside
Member One strike, language in link 2/20 Joined: 09 November 2006 Location: Scotland Status: Offline Points: 302 |
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Last year I was playin and I lost my A5 screw and it was shooting at 280 - 310. I was confused
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Cyberdemon
Member Guested by request Joined: 11 July 2006 Location: Canada Status: Offline Points: 659 |
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THE WARS WILL CONTINUE! |
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General_Lee
Member Joined: 03 December 2006 Location: United States Status: Offline Points: 15 |
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As I'm not stupid enough to shoot foreign objects from my A5 I have tried and with good results... sometimes... inserting another PAINTBALL down the barrel so it contacts the first, then shooting both ..... it works accuratley sometimes... not always its easier and works better to just go full auto.
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A5
APE Vortex Wicked Bolt / power tube Polished internals 14" Werks 14" J&J Ceramic 14" QB Rifled FlatLine Red Dot etc.etc.etc etc.etc.etc etc.... |
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Black_Shadow
Platinum Member Penguin-abuser from <heck> ... Joined: 10 December 2002 Location: Canada Status: Offline Points: 2955 |
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Not to mention you don't have to risk breaking a ball shoving it down your barrel.. i do know someone who has shot marbles out of their gun, it scratched up the inside of the barrel, and did some wicked damage to the wood he was aiming at... Its stupid to put stuff in your gun that doesn't belong... anyone dumb enough to do it should not be allowed to own a PAINTBALL gun |
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98CP ACT
R/T J&J Ceramic 14" Egg II w Z-Board GTA Inline X-Chamber NCStar Red-Dot Pen Spring Mod Trigger Stops Polished Internals Dye Sticky Grip 20oz Co2 w On/Off Next Up: Spimmy |
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Langside
Member One strike, language in link 2/20 Joined: 09 November 2006 Location: Scotland Status: Offline Points: 302 |
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Hamster in barrel... Messy. |
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Black_Shadow
Platinum Member Penguin-abuser from <heck> ... Joined: 10 December 2002 Location: Canada Status: Offline Points: 2955 |
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One of my friends wanted to try his hamster in his spud gun once... thankfully the hamster was sleeping in his cage and out of reach of my friend... |
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98CP ACT
R/T J&J Ceramic 14" Egg II w Z-Board GTA Inline X-Chamber NCStar Red-Dot Pen Spring Mod Trigger Stops Polished Internals Dye Sticky Grip 20oz Co2 w On/Off Next Up: Spimmy |
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Commander_Cool
Member Joined: 26 January 2007 Status: Offline Points: 431 |
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The hamster would have been humourous.... 2) shooting other things out of your gun is dangerous,.. things such as screws are denser, stronger, and have a sharp point that concentrated all of the energy at a single point. As a result they will not break apart like a paintball, and the impact is not spread over a a larger area. You can die or be seriously injured from shooting objects such as screws out of your gun. I do not know the effects of shooting objects that wont easily break apart such as marbles. I would imagine that they would travel at a slower speed than paintballs, but that the velocity could always be increased, bringing the object up to a speed where it is dangerous (more so than a paintball since it will not break on impact). |
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2005 Freestyle
Naughty Dawg Freestyle Angel LCD SP-8 Tippmann 98 Custom |
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MeanMan
Platinum Member Joined: 02 July 2005 Status: Offline Points: 4135 |
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I just heard, in our school's Lifetime Fitness gym class,(you go paintballing in it), a person brought a marble to school, put it in one of the guns and shot it at a roll of carpeting. If only i was there and knew about it. I guess the stupid kid shot another kid in the back of the head when no one had masks on. |
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hybrid-sniper~"To be honest, if I see a player still using an Impulse I'm going to question their motives." |
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netramakin
Member Joined: 28 July 2006 Location: United States Status: Offline Points: 633 |
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That's the funniest thing I've read all week. At my local Wal-mart, on the same rack with the paintball stuff, they sell steel shot that looks about the size of a paintball. I always wondered if you could shoot it successfully and how long it would take for some idiot to kill someone with one. Edited by netramakin - 02 March 2007 at 1:49pm |
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"I'm a riddle so strong, you can't break me." |
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