What is wrong with this gun?

[Explosions-R-Us]

The chamber is Sch. 40 1.5", it is 40" long. The two barrels I've tried are both Sch 40 1" both 36" and 72" long. I had a ball valve on it and could get about 150+ yds out of it. I figured it was time for an upgrade so I went to Home Depot and got a Lawn Genie 54004 1" sprinkler valve (no flow control). Now at 100 PSI, I can get about 20 ft from a potato. I know modding the sprinkler valve would help, as it make a airhorn sound, but I was going to wait a little before I tried to mod it. I have 3 - 9V batteries running to a momentary switch. It was rated for 24V , so I figured that was enough. What is the problem here? With either the 36" or 72" barrel, I can only get about 20 ft of range. Also, I know it looks bad, but I was just trying to get it working good before I make it look good.


Thanks,
RD

[POS]

I think you should mod the valve. Obviously the pilot pressure don't drop fast enough, what causes the honk. Honk is bad in a gun. It shouldn't honk. Honk is great loss of performance

[schmanman]

what's the can zip tied to the chamber? I would go for a watermaster. I have had no problems with them whatsoever. That is puzzling, I see no problems with the whole setup. are you sure It's 100 psi?

[POS]

batteries are in there

[Explosions-R-Us]

Yeah, air compressor with gauge. The batteries are in the can, kinda ghetto, but holds them real nice.

RD

[jrrdw]

I agree with POS, try modding it, looks like a butt kicker!

[SpudStuff]

The airhorn sound is when the valve opens and closes very fast. This has incredibly low flow and CV. You can modify the valve to greatly increace opening time and eliminate the horn sound. The only extra step for the valve you have, is that it has a guide rod. It is a small metal rod attached to the top of the inside of the valve. Pull it out with pliers then carefully bens a slight "L" shape on the end. Then put it through the hole in the middle of the diaphram. Then bend the otherside into another "L" shape to hold it in.

Good luck. If you have any problems catch me on AIM, I'm spudstuff11.

[Atlantis]

How long do you hold down the button, is there any air left in the chamber after you fire?

[Explosions-R-Us]

Usually until all the air is gone, but the potato shoots out before the honking even begins. I thought the 72" barrel would fix that, but it didn't.

RD

[POS]

the potatoo blocks the sound of the honk. When it is out, the pressure can create waves you can hear (the honking). So that's normal you hear is afterwards.

[nicholai]

The airhorn sound is when the valve opens and closes very fast. This has incredibly low flow and CV. You can modify the valve to greatly increace opening time and eliminate the horn sound. The only extra step for the valve you have, is that it has a guide rod. It is a small metal rod attached to the top of the inside of the valve. Pull it out with pliers then carefully bens a slight "L" shape on the end. Then put it through the hole in the middle of the diaphram. Then bend the otherside into another "L" shape to hold it in.

Good luck. If you have any problems catch me on AIM, I'm spudstuff11.

um.. modifying the valve is not going to solve the airhorn honking sound spudstuff i dont know where the hell you read that but you have been misinformed


lmao

Honking is caused by the valve trying to seal when its dry. The honking that you hear is the slight vibrations from the diaphragm when its trying to seal itself. These valves were meant for water not air so they have to be lubricated (white lithium grease is what I use) in order to stop the honking sound.

[THEMOST]

Will the honking eventually ruin the valve if it's not lubricated?

[Explosions-R-Us]

How do I lube it?
Would that increase the performance?
RD

[jrrdw]

I sprayed WD-40 in both ends and unscrewed the blow gun and sprayed down there to. Not only did it make it stop honking, it also made it seal much faster. It blew WD-40 everywhere the 1st few shots, but it still works great.

[Hotwired]

A spray lubricant like WD-40 as jrrdw said or oil or grease.

The honking is caused by the diaphragm so thats where the lubricant has to be.

jrrdw why down the blowgun?