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| | #1 |
| Founder Join Date: Mar 2003 Location: Maryland
Posts: 5,985
UserID: 1 | Today I finally finished a real CPS homemade. Based upon my APH design and improved, it is fairly powerful and I'm glad I made it. Not because it is fairly powerful though, the APH is much more powerful and I'd rather use that if I wanted power. What is important is that it was the first one, and I noticed some problems with it. First off, I used leftover parts so it's internal diamter was 1/2" instead of 3/4" or even 1". That wasn't much of a problem on any nozzles except for riot blast though, normal CPS guns have a smaller internal diameter still. Range is something like 48-54, I did a few tests with the stride method, nothing too accurate. No straws were in the nozzles. The real thing of importance in this homemade is what it didn't become. The gun I designed to have a PC about twice as thick as it is not Collosused. I used some larger CPS tubing to Collosus it, and after about 4 pumps all that did was pop off the tubing barbs. I found the PC and clamp around 20 feet behind the gun each time. I could feel the power in the pumping, it was good, but obviously the system couldn't handle it. In the future, other than making the gun have a larger ID (with larger tubing and better Collosusing methods), is to attach the center CPS tube better. I am not sure how that would be done, I think we may have to use larger barbs and protect the tubing a bit so the clamp could be put on tighter. Instead of doing my original idea, I put 3 or 4 layers of bike tubes over the PC. It's not exactly even and I'm thinking of taking them off. I will be experimenting with the PC systems, maybe I'll find a solution to my original problem. http://www.sscentral.net/images/cps/DSCN0220.JPG
__________________ email: ben at sscentral dot org / 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. Do not send me a PM or email about reading a certain post unless it's been a few days since you've posted. I try to read every post. |
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| | #2 |
| Founder Join Date: Mar 2003 Location: Maryland
Posts: 5,985
UserID: 1 | No comments? I thought this would be a popular thread.
__________________ email: ben at sscentral dot org / 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. Do not send me a PM or email about reading a certain post unless it's been a few days since you've posted. I try to read every post. |
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| | #3 |
| Administrator Join Date: Feb 2004 Location: UK
Posts: 1,322
UserID: 77 | Sounds good. What kind of output are you getting?
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| | #4 |
| Senior Member Join Date: Jun 2004
Posts: 206
UserID: 215 | Wow it sounds cool, do you think in the future you'll be able to build a better one that will go farther then the APH?
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| | #5 |
| Senior Member Join Date: Apr 2004
Posts: 886
UserID: 97 | Doom, I don't know how much you know about plumbing and such, but there is something you are missing. A barb can never hold tubing. It is ment as a stable place to attach a hose clamp. A hose clamp, for those who don't know is a ring that you put around the places of attachment for tubing. It is tightened with a flathead screwdriver. Once on, almost nothing can pull it off. I use it on all my barbs, even gravity flow. Hose clamps usually sell for about $0.60 and come in all tube sizes up to like 4 inch.
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| | #6 |
| Founder Join Date: Mar 2003 Location: Maryland
Posts: 5,985
UserID: 1 | Smudge, I said I used them. :huh: It seriously was more powerful than you think. It burst off the tubing barbs even with the clamps on so tight it was cutting into the tubing almost. Believe me, I know what I'm doing. The CPS tubing wouldn't even stay on without clamps.
__________________ email: ben at sscentral dot org / 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. Do not send me a PM or email about reading a certain post unless it's been a few days since you've posted. I try to read every post. |
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| | #7 | |
| Senior Member Join Date: Apr 2004
Posts: 886
UserID: 97 | Quote:
I thought I was helping. <_< My cps gun holds together nicely. I used two hose clamps on each end, but ti shouldn't make much of a difference. I doubt it is as thick of a PC as yours. Maybe you should try a restraint, like a clear bottle or something so that the PC can only expand width wise. I sorta did this on mine, however it was a completely different design where both ends were conected to something. I don't know if this will help at all, since if it is powerful enough, it will find away out. I think a smaller barb might work better? EDIT: is there something on the end of that so the PC can't expand lengthwise? Maybe all im saying is pure trash. I know so little about CPS, and even less about cylidrical CPS.
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| | #8 |
| Senior Member Join Date: Apr 2004 Location: Seattle, WA
Posts: 515
UserID: 94 | I doubt that I'll ever make a cps homemade. They're just too dang complicated. An air pressure gun has more potential then a cps, and is much easier to make. The only cps homemade I MAY make is a kind of Splashzooka 150oz. But other than that, I have been discouraged even more. Thank you though, I didn't want to waste my money on something that wouldve been even worse. I still say to get a cap at the end of that PC like BS said. |
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| | #9 |
| Founder Join Date: Mar 2003 Location: Maryland
Posts: 5,985
UserID: 1 | Ok, now I've got it working. It's PC still is questionable, I should have got larger ID tubing to Collosus it with. I had to hold the strips together with electrical tape to get it working. I pumped it 15-20 times and then range tested. No wind, no straws, no glycerin, no bull. The nozzle was 3/16" because it was the only 1/2" nozzle I had other than 5/64". Range was 58 feet to the last large puddle. 63 feet 6 inches to the last drop. This is just amazing, with some more Collosusing it could shoot over 60 all the time! And then if I get a better nozzle, straws and glycerin it's could go over 70! I am very pleased with the results, just sad that my gun's PC doesn't hold together as well as I hoped. If I used one slightly larger ID strip I wouldn't have any problems with the PC. I now plan to use this gun as a test again when I buy more CPS tubing. I am going to add not another layer to the center one, but a third. I'm hoping that'll make it buck like a shotgun. I also plan on making a gun with a larger ID, 3/4" should work well.
__________________ email: ben at sscentral dot org / 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. Do not send me a PM or email about reading a certain post unless it's been a few days since you've posted. I try to read every post. |
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| | #10 |
| Senior Member Join Date: Jun 2004
Posts: 206
UserID: 215 | Wow, that would be one Hasbro HQ of a good sniper gun. How much did that cost you about?
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| | #11 |
| Founder Join Date: Mar 2003 Location: Maryland
Posts: 5,985
UserID: 1 | It was leftover parts. I'd guess $30-$40. Much better than a CPS 2000. :Hey, that's funny.:
__________________ email: ben at sscentral dot org / 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. Do not send me a PM or email about reading a certain post unless it's been a few days since you've posted. I try to read every post. |
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| | #12 |
| Senior Member Join Date: Jun 2004
Posts: 206
UserID: 215 | Are you going to be putting this under homemades section on the site later? Also will you include pictures?
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| | #13 |
| Senior Member Join Date: Apr 2004
Posts: 886
UserID: 97 | Its basically already on the site. Just put CPS tubing in place of the air pressure PC's.
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| | #14 |
| Founder Join Date: Mar 2003 Location: Maryland
Posts: 5,985
UserID: 1 | I designed it a bit differently too. Look at the pic if you have no patience. I probably will put this on the homemades section, but I do plan on making a better version and that article will be updated.
__________________ email: ben at sscentral dot org / 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. Do not send me a PM or email about reading a certain post unless it's been a few days since you've posted. I try to read every post. |
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| | #15 |
| Administrator Join Date: Feb 2004 Location: UK
Posts: 1,322
UserID: 77 | Um...could you make an estimate in Xx? Are we talking about 20x streams here?
__________________ ISS: Soaker Sagas Submit your saga and see it up with other titans of water warfare. |
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