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Old April 22nd, 01:47 AM   #79 (permalink)
Mortisdeum
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Join Date: May 2005
Location: Riverside CA
Posts: 1,258
Quote:
Originally Posted by paintballer900
It actually works well and idk what u mean about temp but im thinking it was about 50-60 degreese out side when i did this if thats what u mean... well ill try it in all temps scince its gunna be like 40 tommarow and i got a game tommarow. And i think it is worth to change the sear spring without using full auto because it really makes a huge difference in trigger pull but make sure u cover it or it makes the gun loud somehow i read so...
EDIT: but if your using full auto the trigger pull gets hard because the way the trigger bushes the sear with the bolt
2nd EDIT: what would happen if i played paintball in the rain cause its supposed to pour here tommarow and i was wondering how that will effect my gun?

Glad to seee It works for the short burts like you did in the vid with co2. just listening to it your doing about 23-26 bps range

Just take it EZ interms of fire and keep it to short bursts cause If you go for the sustained vollies your tank is going to freeze up.

Also with this mod you don;t need the trigger spring because the sear spring will return the trigger for you and that will help lighten the trigger some.

Now to explain why co2 is not a good gas to use for this mod *Pulls a white lab coat out of the desk and puts it on*


Here a full 20oz tank at a few temps and what the tanks pressure is
120 F = 908 PSI
100 F = 877 PSI
80 F = 845 PSI
60 F = 814 PSI
40 F = 783 PSI

So the lower the temp the lower the tank pressure

Then again at 1/2 full (10oz of co2)
120 F = 454 PSI
100 F = 438 PSI
80 F = 422 PSI
60 F = 407 PSI
40 F = 391 PSI

And from that we can also see that a half filled tank has half the pressure of a full tank

A quick way to see the pressure of a is if you use this formula
Code:
 (0.05 * ((Tank Temp - 32) *0.5555))/0.02 * (%filled / 100)= Tank Pressure
Now the think is about co2 is that if you let a little bit of gas out to fire your gun the Tank temp will drop a little but will return once it warms back up.

So when you fire at a high rate your letting a larger amout of gas out of the tank it will cool off even more and cause the pressure to drop because there is now less gas and it is now at a lower tempurature too.

So after taking that into afect
if I were to take a 20oz tank @ 100F and vent it rapidly till it was half filled by shooting at a high rate of fire for example

I can expect the pressure in the tank to be less then 385 PSI because the Frost on the tank would mean that the temp in the tank is less then 32 F



And now that your day is no longer wasted *Throws the coat across the room*

The big thing you want to do when you play in the rain is keep your paint as dry as you can.
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