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C-A_99 · 06-11-2008, 03:03 PM

I believe this one is the MK I; everything is glued together: the pump cap, the nozzle, and the end of the PC case. (the whole case has to be unscrewed and the glue bonds broken) The grip's texturing also snaps off. (as opposed to slightly newer models where it was just a part of the case)

I was able to fairly succesfully do a 15 balloon k-mod on this, getting around 20 pumps. I may increase the amount of balloons on it later.

Anyways, this one seems to have always had issues with its pull valve either getting stuck open or closed, usually open. For the past week, I've tried rubber bands, which never worked so now I'm going to create some backing for a spring using the PC case as support.
Picture:

Ben · 06-11-2008, 03:46 PM

How many rubber bands are you using? I don't think a spring will function differently than rubber bands. Are you sure the spring going bad is the problem here? The seal could also come loose. That sounds more likely to me if can be both stuck open and closed. That indicates to me that the spring not pushing hard enough isn't the problem.

C-A_99 · 06-11-2008, 04:45 PM

I'm fairly sure theres no problems with the seal since when I manually push the valve closed completely, it stores pressure fine. I believe it was getting stuck closed because the design doesn't allow it to be pulled very far, which I can fix by using a shorter rod that pulls on the lever. However, the spring behind the lever prohibits proper closing without a strong spring behind it. I've tried 2 ruber bands and overall, it seems to be a fairly dissatisfactory solution. The bands will also exhibit problems over time due to other stress inside.

Here's a quick video that demonstrates the problem with the pulling range.

http://www.fileden.com/files/2007/5/...3/MVI_0088.avi

06-11-2008, 03:03 PM	#1
C-A_99 Senior Member Join Date: Aug 2006 Location: MI, US Posts: 470 UserID: 809	CPS 1200 valve I believe this one is the MK I; everything is glued together: the pump cap, the nozzle, and the end of the PC case. (the whole case has to be unscrewed and the glue bonds broken) The grip's texturing also snaps off. (as opposed to slightly newer models where it was just a part of the case) I was able to fairly succesfully do a 15 balloon k-mod on this, getting around 20 pumps. I may increase the amount of balloons on it later. Anyways, this one seems to have always had issues with its pull valve either getting stuck open or closed, usually open. For the past week, I've tried rubber bands, which never worked so now I'm going to create some backing for a spring using the PC case as support. Picture: __________________ http://hbww.fateback.com/index.html Website w/ info on teams, armory, etc.

06-11-2008, 03:46 PM	#2
Ben Founder Join Date: Mar 2003 Location: College Park, Maryland Posts: 6,054 UserID: 1	Re: CPS 1200 valve How many rubber bands are you using? I don't think a spring will function differently than rubber bands. Are you sure the spring going bad is the problem here? The seal could also come loose. That sounds more likely to me if can be both stuck open and closed. That indicates to me that the spring not pushing hard enough isn't the problem. __________________ email: / Forum rules / Read this page before emailing me. Do not send me a PM or email with a water gun question if someone else could answer the question. Post at the forums. You will get a response from me along with others' views or ideas.

06-11-2008, 04:45 PM	#3
C-A_99 Senior Member Join Date: Aug 2006 Location: MI, US Posts: 470 UserID: 809	Re: CPS 1200 valve I'm fairly sure theres no problems with the seal since when I manually push the valve closed completely, it stores pressure fine. I believe it was getting stuck closed because the design doesn't allow it to be pulled very far, which I can fix by using a shorter rod that pulls on the lever. However, the spring behind the lever prohibits proper closing without a strong spring behind it. I've tried 2 ruber bands and overall, it seems to be a fairly dissatisfactory solution. The bands will also exhibit problems over time due to other stress inside. Here's a quick video that demonstrates the problem with the pulling range. http://www.fileden.com/files/2007/5/...3/MVI_0088.avi __________________ http://hbww.fateback.com/index.html Website w/ info on teams, armory, etc.

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