Improvement PC CPS 2700

Threads about water gun modifications.
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-G-JiV-
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Joined: Sat Oct 09, 2010 8:10 pm

Improvement PC CPS 2700

Post by -G-JiV- » Mon Oct 25, 2010 9:34 pm

I can remember that I saw a try on this but I just cannot find it, so I am just asking. A link would also be helpful if this has already been asked/tried:

Does anyone found out an effectiv way to improve the size of spherical pressure chambers such as the CPS 2700/1000/1500 etc...? I once read about this but that is months ago...

Any ideas so far? I have already though about removing the "pressure chamber's cover" which stops the Bladder from extending too much and reinstalling a bigger one. You could also try to widen the pressure chamber, but I do not know how, it should not look too crazy/ugly, though you can see the PC quite good...

I would also like to know if anyone knows how far you can go with such spherical bladders till they break down ? Any experiences/tests made ? CPS 2700 usually holds 800-900ml, so how much would be possible till it will be ruined or it will loose flexibility ?

Thanks for answers, get out with you experiences, do not be greedy...^^ :D

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soakernerd
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Re: Improvement PC CPS 2700

Post by soakernerd » Tue Oct 26, 2010 12:52 am

BAM!
A PC expansion for the CPS 2100, it involves melting and stretching the PC case. I do not know what the long term affects of this mod.

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cantab
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Re: Improvement PC CPS 2700

Post by cantab » Tue Oct 26, 2010 3:59 am

Count pumps, when the pump stiffness suddenly rises sharply, that is when the rubber is at full stretch. You probably don't want to go to full stretch repeatedly though, it will wear the chamber out over time, instead about 80-90% of the size. A busted spherical chamber is harder to replace than a busted cylindrical one. (And outside the USA, getting latex tubing to replace a cylindrical one is hard enough.)
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-G-JiV-
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Re: Improvement PC CPS 2700

Post by -G-JiV- » Tue Oct 26, 2010 10:45 am

ok, I will try the expansion as done with CPS 2100...But I must admitt, it looks ugly...WHat can be done to keep the plastics optical appearance? (i.e. glossy) How much should I wide out the chamber? 20 mm each side?(40 mm at whole diameter) ?

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