[Help]Tippman Gryphon velocity trouble
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=192130
Printed Date: 22 December 2024 at 2:59pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: [Help]Tippman Gryphon velocity trouble
Posted By: Predator-One
Subject: [Help]Tippman Gryphon velocity trouble
Date Posted: 28 June 2015 at 9:06pm
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Dear Helpers, My gryphon marker after about 8 games was starting to increase in velocity due to probably the hot day heating my air. So, I screwed my velocity changer to lower my velocity but it stayed at 300fps while the park limit was below 285fps. I screwed both ways still no changes, and if there were it was about 10 fps up or down. So i thought about my tank being too hot so i cooled it down in ice while it was seeming to be room temperature, so that i could keep the integrity of the tank. That didn't help much. So I went home and disassembled and reassembled hoping that would help. Any other ideas? The marker after a while did seem to make weird noises but I think it stopped later on. I couldn't play for the rest of the day because of the marker being too high in velocity. All I could play with was my pistol and other markers but that was my main that i couldn't play with. So please give me some ideas on what I could do. Thank you. 
------------- -Predator(Ihuntforyou) |
Replies:
Posted By: tallen702
Date Posted: 30 June 2015 at 3:33pm
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So, here's the big thing to remember about CO2 with a marker, if you rapidly fire it, its going to chill the tank (thanks to the laws of thermodynamics regarding evaporative cooling), and that's going to cause liquid CO2 to enter the line and valve which is then going to expand rapidly upon the opening of the valve creating a spike in velocity as the liquid boils off into gas. In short, by chilling the tank, you were doing the exact WRONG thing to keep your velocity down. So, here are some pointers to keep you from shooting "hot" at the chrono. 1) Don't chill your tank. The only time it's acceptable to "chill" a tank is by releasing any leftover CO2 during the purge-and-fill process to put more CO2 in. 2) keep the marker horizontal or pointed UP when not in use. This will prevent liquid CO2 entering the line and valve which will cause you to shoot "hot" no matter what you do with the velocity screw 3) Remember "Righty-tighty, Lefty-loosey" Turning the velocity screw to the right (clockwise) is going to tighten the airflow path in the powertube, which is going to decrease velocity. Turnin git to the left is going to loosen the airflow path, allowing the velocity to be greater since more volume of air is reaching the paintball at the chamber end of things. 4) When chronographing your marker, it's important to take at least three shots BEFORE you put it up to the chronograph. That will make sure that if there IS liquid in the valve or line, that it will purge from the system giving you an accurate reading. If you do all of this, and it still fires "hot" you can clip a coil or two off the mainspring. This will lower the valve dwell (the time the hammer stays on the valve, keeping it open) due to the fact that less force will be needed to compress the spring since it's missing a coil or two. That will mean a lower volume of gas reaching the paintball meaning lower velocity. I hope that helps! ------------- <Removed overly wide sig. Tsk, you know better.> |
Posted By: Predator-One
Date Posted: 01 July 2015 at 2:04am
I was using hpa
 ------------- -Predator(Ihuntforyou) |
Posted By: tallen702
Date Posted: 01 July 2015 at 7:17pm
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Well, in that case, coil clip is going to be the way to go. ------------- <Removed overly wide sig. Tsk, you know better.> |