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Rain Bird CP100 sounding like a air horn

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Rain Bird CP100 sounding like a air horn

Unread postAuthor: spudder1 » Fri Aug 11, 2006 9:25 am

Does any one know why my rain bird CP100 1" in line valve sounds like a air horn? Is it because i have no did the valve mod yet?

Thanks for the help
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Unread postAuthor: Shrimphead » Fri Aug 11, 2006 6:01 pm

Yep, that is the reason.
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Unread postAuthor: M3NT4L » Fri Aug 11, 2006 6:48 pm

I dont want to be an a$$ but why dont you search this or look for an answer on the wiki or something.
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Unread postAuthor: spudder1 » Mon Aug 14, 2006 7:21 am

You know all I would like is an answer to my question. I have never talked to anyone, nor i would speak to anyone like this. I just asked a question and wanted a short little answer. We all should talk to people how we would want to be talked to. Life is too short to be mean.
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Unread postAuthor: plumpthumb » Mon Aug 14, 2006 2:39 pm

I have modded two Rainmasters; one works just fine (quiet) the other gives
me the "honk". Each one was done in an identical manner but put on two different guns. I have tried several different remedies but to no avail. I am
beginning to believe it is either in the design of the gun (could THAT be?) or an ideosyncrasy of the particular valve. I have come to live with the honk-
ironically it is on a GB sniper! That's my best-any ideas?
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Unread postAuthor: spudder1 » Mon Aug 14, 2006 3:02 pm

Thanks, I will have to build another gun and see what happens. The first time I let the valve go I was in the garage and though I lost my hearing.

Thanks alot for the information.
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Unread postAuthor: beebs111 » Mon Aug 14, 2006 3:48 pm

M3NT4L wrote:I dont want to be an a$$ but why dont you search this or look for an answer on the wiki or something.


why dont you stop being a dick to the new members of the forum, and actually contribute something :evil:
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Unread postAuthor: spudder1 » Mon Aug 14, 2006 3:57 pm

Thats "BEEBS" Ya just trying to get a little help out here. I have built spud gun about 10 years ago, and now starting to be a kid again.
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Unread postAuthor: boilingleadbath » Mon Aug 14, 2006 3:57 pm

Honking is most commonly redemied by increasing the flow of the pilot valve.
That is, mod your valve.

*adds "airhorn" keyword to the relevent spudwiki articals*
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Unread postAuthor: spudder1 » Tue Aug 15, 2006 7:47 am

I did the mod saturday night, and still doing the same thing. When I pull the blow-gun lever, the air comes out of the airgun, and not the barrel. Do you have any clues about this one.

Thanks
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Unread postAuthor: beebs111 » Tue Aug 15, 2006 8:32 am

is there something jammed in your barrell?
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Unread postAuthor: schmanman » Tue Aug 15, 2006 9:07 am

are the arrows on the valve pointed from the air chamber to the barrel ?
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Unread postAuthor: spudder1 » Tue Aug 15, 2006 11:03 am

The valve arrows are from the air chamber to the barrel. First time I tried this there was nothing in the barrel. Last night I put some paper ball wrapped with electrical tape around it and did the same thing. Thanks alot for helping me out guys.

I pressurized the chamber to 50 PSI and squeezed the air gun on the modified valve and all the air comes out of the air valve not the chamber

Thanks
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Unread postAuthor: boilingleadbath » Tue Aug 15, 2006 1:27 pm

I don't really know my sprinklers, but I'd venture to say that your pipe nipple is protruding through the valve lid to a degree that it contacts the diaphram and prevents it's momement.

Try taking your pipe nipple and grinding off a couple threads.
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Unread postAuthor: SpudStuff » Tue Aug 15, 2006 2:16 pm

Just un screw the nipple and put ~10 wraps of teflon on it and thread it in ~ 1/2 way
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