A Serious Defect? |
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ACross
Member Joined: 27 August 2006 Status: Offline Points: 5 |
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Posted: 27 August 2006 at 5:23pm |
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I'm going to try and describe this so it's easy to understand but to me it seems like an odd thing (maybe a defect?). I bought a used 98 Custom on Ebay. It came and was in good shape, no rust or anything and I took it out today just to see how it shot. I noticed that the balls would hit about 6 inches to a foot or so towards the right (it increased more the further I shot) from where I aimed. I thought that was odd and took it home to see if I could find anything wrong with it. I was holding the marker and looking down on it and I thought it looked like the barrel slowly sloped off to the right. I asked my dad if he thought so and he looked at it and said that it seemed that way to him too. After studying it for a few minutes I saw a way that I could test to see if the barrel was indeed crooked. I unhinged the hopper elbow and took a straight edge and ran it along one edge of the marker (on the top where the metal runs parallel) and then on the other side. The barrel overlapped further on the right side then on the left, meaning that it angled towards the right. By the way, it is the stock barrel. Now to what is causing this, I can't say for sure. Are the threads on the barrel crooked, the threads on the marker are crooked or is the barrel just not straight. So if anybody has heard of this, had it happen to them or just has any input at all I would really appreciate it. Thanks
Edited by ACross - 27 August 2006 at 5:26pm |
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RevoXT
Member Strike 3 and hes outta here Joined: 10 August 2006 Location: Georgia Status: Offline Points: 443 |
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can't say I have ever heard of that...I guess the guy was selling it for a reason lol
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Tippmann A-5
-Shocktech Drop -Super R\T -QEV -JCS Powertube -BT Sight -Flatline + Metadyne Shroud -R.I.S. Foregrip -Stock -C02 20OZ Anti-Siphon -X-Core EXP Chamber -Macro-Line Tippmann C-3 |
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Monk
Moderator Group Joined: 23 October 2003 Location: United States Status: Offline Points: 6556 |
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Take the barrel off and see if it is curved. If it is, thats your problem.
If not, put it back on the gun and see if it still seems curved If not, then that was the problem. If it is still curved, borrow a friends barrel. If the new barrel seems curved, then the threads are screwed up on the gun. If the new barrel looks good, then the stock barrel is screwed up. I think that just about does it. |
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barn_user
Gold Member Strike 1 - Filterdodge, 3/20 Joined: 28 May 2006 Location: United States Status: Offline Points: 1423 |
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Hopefully it all works out for ya. But your not guaranteed the best quality product there is. When I picked up my 98 with a flatline for $160 off ebay, the fool had colored the ENTIRE thing with a black sharpie...
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pattison
Member Joined: 30 August 2002 Location: Korea, North Status: Offline Points: 384 |
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Actually this is a design flaw. A lot of 98c's do this. It is lousy engineering to have a threaded receiver cut in half, because it requires tighter tolerances than the 98 has. The a5 fixed this with the one-piece barrel receiver. One thing you could do is this:
loosen the front screws a little bit tighten the barrel in HARD so the bottom of it seats against the ledge in the receiver tighten the front receiver screws |
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Eat The Brisket
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Bruce A. Frank
Platinum Member KRL Reincarnated? Joined: 27 March 2004 Location: United States Status: Offline Points: 3063 |
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Pattison got it correct. And it varies from brand of barrel to brand of barrel. Even though the barrel threads for differed barrels fit some vary in their tolerance. The threads in the marker are off...some. And the threads on the barrels just happen to line up to when engaged to tilt the barrel slightly out of alignment. As was suggested, loosen the front receiver screws on the marker and seat the barrel with a tightening twist...then re-tighten the screws. For the most part, you will find you use the sights very little. Target acquisition is by watching the trajectory of the balls. If Tippmann had expected real use of the sights they would have designed then with a windage adjustment. If the misalignment really bugs you, sent it to Tippmann. Even as a second hand marker they may fix it for free...since it actually is a defect in the marker. |
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ACross
Member Joined: 27 August 2006 Status: Offline Points: 5 |
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I did loosen the front reciever screws, screwed the barrel in tight then tightened the screws and it helped. I still think its slightly off but not as bad. I probably wont use the sights that much but it seemed to me that a slanted barrel would add more friction on the ball, thus reducing distance of the shot. Maybe not but that seemed possible to me. Is it likely that another barrel would seat itself straight? I wanted to get a longer barrel, especially if I know that it will correct what little crookedness there is. I sent Tippmann an email so I will see what they say. Thanks again for the help.
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Bruce A. Frank
Platinum Member KRL Reincarnated? Joined: 27 March 2004 Location: United States Status: Offline Points: 3063 |
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Another barrel may seat better. About the "friction," the ball is pushed inside the end of the barrel before the gas hits it, so there is no transition that might sling the ball against the side of the barrel. Only a problem if the barrel were, itself, actually bent (like the Flatline). |
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GI JOES SON
Platinum Member Got me flowers for my birthday Joined: 10 July 2005 Location: United States Status: Offline Points: 4946 |
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damn. i got a new barrel a while back and thought it was messed up, then i checked the stock barrel and others and realized they all seemed a little tilted. i honestly didnt factor in tippmann making a possible error |
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Enos Shenk
Platinum Member ~-o@ Joined: 10 June 2002 Location: A comfy chair Status: Offline Points: 14109 |
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The air will push the ball out the barrel no matter what, the air applies positive pressure on the ball until it reaches the end of the barrel. So as long as your gun chrono's at your field speed, it will shoot the exact same distance as anything else.
Tippmann is ATROCIOUS at responding to email. Just give them a call. I dont know the 800 number offhand, but 1-260-749-6022 is their number. |
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