Level 10 and velocity issues

[snowman]

Here is part of a post I just entered about beta testing, wondering if someone can answer my tech question.

Installed on my RT Pro, Zgrip, stock barrel and PMI Pure energy 3000, 47cu tank. For testing purposes I was using a coiled remote, for playing, the tank is right on the gun. Ended up with the small spring, two shims and 1-ring carrier.

- On this tank it significantly less efficient, I primarily play indoor leagues with speed at 260. Around 300 left in the tank, it just quits, I now have to fill after every game, where I could ususally last two games w/o filling.

- Been using 1 year cruddy paint to test w/o any breaks, have shot about 1000 rounds of RP Premium w/o any breaks yet.

- Problems that I have encountered are wierd. During my league play I have to get my tank filled every game. So then I would walk right to the chrono and get the speed going 215, 220's. I set it like that for a reason. I would then play the next game 10-15minutes after that. Then during the game, I'd put about 200 rounds through it, and when I would Chrono off it would be high 250's, low 260's. Comming on the field I would be at 220's, 230's. This would happen every game. I don't totally understand the physics behind cooling tanks and velocity, so I know there's a connection to be made, but I don't know where. I am not certain what to do. Any suggestions?

[athomas]

Because of the pressure sensitivity of the L10, if the input pressure from the tank goes below the amount required to supply the valve with a full charge, then the gun won't fire. Most level 10 setups require the chamber pressure to be higher than the standard setup. This means that the gun will stop firing at a higher pressure level than normal. On a 47ci tank, every bit of air counts so if the gun stops at a higher pressure then you are getting less shots per fill.

Having a tight carrier will cause velocity changes. Check the tightness of your level 10 carrier. If it is really tight move to the next size larger or maybe you need to keep it more lubricated.