Gun Maintenace and Repair - 98 costom velocity problems

Print Page | Close Window

98 costom velocity problems

Printed From: Tippmann Paintball
Category: Paintball Equipment
Forum Name: Gun Maintenace and Repair
Forum Description: Important info for keeping your marker in top shape
URL: http://www.tippmannsports.com/forum/wwf77a/forum_posts.asp?TID=176842
Printed Date: 02 February 2026 at 3:57am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: 98 costom velocity problems

Posted By: bunker487
Subject: 98 costom velocity problems
Date Posted: 14 July 2008 at 5:50pm

hi guys i have a 98c and some how i miss placed my valve screws and my velocity was bouncing around it went from 232 and then it dropped down to 210 and so on. i replaced those screws and my velocity is still doing that. and the screw that makes the velocity go up and down doesn't work. any suggestions?

Replies:

Posted By: slackerr26
Date Posted: 14 July 2008 at 8:26pm

your velocity screw might be broken

-------------

Posted By: K Hop
Date Posted: 14 July 2008 at 9:39pm

^^
how do you break a screw? (a velocity screw anyways)

make sure the velocity screw is in there and if your using co2 that can happen sometimes. an expansion chamber would help the problem is simply that your using co2.

Posted By: slackerr26
Date Posted: 14 July 2008 at 10:23pm

um if you use it in cold weather or whatever, i can freeze and break. my friends x7 did it one day

-------------

Posted By: Beil
Date Posted: 14 July 2008 at 10:52pm

with CO2, it's quite common to have spikes in velocity, it's just the nature of the beast. CO2 needs time to turn into a gas, if it's not given enough time, you shoot liquid CO2, and the liquid is more dense than the gas---voila! velocity spike.
i used to walk up to the chrono with my old 98 and shoot three shots and they'd be 260, 240, 250, etc. I wouldn't worry about it. now if you can't get the gun to shoot under 300fps, then you have a problem.

Posted By: bunker487
Date Posted: 17 July 2008 at 10:14pm

thanks

Posted By: TSI27
Date Posted: 19 July 2008 at 12:23pm

Make sure your valve isn't stripped, that caused my gun to do that. Got a new vavle and it fixed the problem.

-------------
Tippmann 98 Custom
Polished Internals
14" J&J Ceramic Barrel
Upgraded Drive Spring
6 Position Carbine Stock
Red Dot Sight