cps problem

Build a homemade water gun or water balloon launcher and tell us about it.
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cps zer0
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Joined: Thu Aug 07, 2008 6:52 pm

cps problem

Post by cps zer0 » Tue Aug 26, 2008 1:36 pm

i recently built a cps gun that uses a hose connection. the pressure is very constant but the gun only shoots about 15 feet. i used a 1/4'' id LRT ith a 3/8'' od.

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C-A_99
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Re: cps problem

Post by C-A_99 » Tue Aug 26, 2008 3:30 pm

First, check your nozzles. The LRT you used is very small so you'll need a small nozzle to get any reasonable range. For best performance with LRT, check the CPH article and have a look at its recommendations for using LRT, diameters, etc.

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cps zer0
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Re: cps problem

Post by cps zer0 » Tue Aug 26, 2008 4:13 pm

the nozzle size is drilled with the smallest bit i own.

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SSCBen
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Re: cps problem

Post by SSCBen » Tue Aug 26, 2008 5:11 pm

That LRT you used is simply too thin. You'll have to buy some thicker LRT from a place like McMaster-Carr. Read my LRT article for more details.

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Silence
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Re: cps problem

Post by Silence » Wed Aug 27, 2008 11:32 pm

cps zer0 wrote:the nozzle size is drilled with the smallest bit i own.
That could also be your problem. Depending on the pressure, the optimum nozzle size is probably between 3/16" and 3/8".

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cps zer0
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Re: cps problem

Post by cps zer0 » Sun Aug 31, 2008 1:16 pm

i will buy a thicker piece of LRT later this week.

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