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K Modding
by Aqua Flash
(12/10/07)


Some of the CPS soakers that were made that used a spherical pressure chamber weren't as powerful as others, however, there is a way to boost power, called the K Mod which was invented in 2001 by a person called XN, this made guns like the CPS 1000, 1200 and 2100 become way more feared than they were stock.  Putting balloons over the rubber shaped balloon pressure chamber to build up more pressure the extra balloons create and give out a much more hard hitting stream.  Here is a guide on how to do it, I am using 30 balloons so the check valve didn't need freezing, no point in my view to go too high.  This mod is being done a CPS 2100

What you need:

CPS 2100 (or any CPS gun with a spherical pressure chamber)
12" Balloons (30 at least)
Screwdriver(s)
Vice


Ok, first you need to open up your gun like so.




Next, you need to take out the pressure chamber and open it (the black circle you can see).



Open up the chamber with a screwdriver to reveal the inside where you can take out the rubber bladder and get your balloons on.



Then once open get yourself some 12" balloons so you can start putting them over the rubber chamber.  Anything less than 12" is too tight and anything over won't be tight enough to get the results you'll be looking for.



Now, you need to cut the balloons to a point where when it fits over the rubber they don't squeeze in with the narrow parts near the front of the plastic that holds in the chamber.  If you cut them too short then you'll have a very hard job of fitting things back together and the pressure will ultimately cause the plastic to crack.  Put the bladder straight up in a vice tight but not too tightly so you can fit the balloons over without too much hassle, you can also if you can't or don't want to fit balloons this way get some help from a person to hold the pressure chamber while you put the balloons on (or the other way around).  For each balloon you put on you may want to number it as well to keep on track.  Since the check valve isn't getting disabled (disabling it means you can build up more pressure with more balloons put to give you greater power, however be aware that since there is more pressure the life of the gun will be reduced), we are using 30 balloons here.



Once finished, screw the now modified chamber back into its casing and then close the rest of the gun up and test it, you should hopefully get more of a hard hitting stream which goes about 5 feet further.  The stream will be more broken up, to solve this, see my next mod which is the nozzle selector modification.




Stats




Firing Chamber Volume
420mL - 14.8oz








Ranges
Level
45 Degrees
Output/sec
Shot Time

8.5m - 28.05'
12m - 39.6'
6.7oz
2.2 Seconds





Pumps
14



Shots Per Tank
4.8




So, from that it has turned out ok, but the stats for me were a bit low, this might be due to the fact the CPS 2100 used was a Mark 3, which is the weakest one stock and modded in terms of power, compared to a stock Mark 2 CPS 2100 there's not much of an advantage, since stock Mark 2 2100's are fairly powerful, but still, this has helped the gun, and the nozzle selector modification will help even more.  To find out more about CPS 2100 marks, you can view this topic here.


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