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Weird Barrel Issue


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#1 Aimless

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Posted 19 August 2008 - 11:58 PM

Usually, when you fire an air-pressure gun you get a SINGLE POP or POOF or something along those lines. Instead I get what sounds like a very fast series of pops and the dart goes all of 5 ft at 4 pumps on a BBBB, at 12 pumps the dart shreds itself and I get a crack in my PETG. It also seems like the darts tend to want to flip around in the barrel, I've had a short stefan fold in half and get stuck before. Any ideas what might be causing this crap?
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#2 bobafan

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Posted 20 August 2008 - 12:09 AM

The only thing i can think of right now that could cause those last symptoms is if your hot glue is severely rubbing against the inside of the barrel.
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#3 stickfigure91x

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Posted 20 August 2008 - 12:10 AM

I would probably go sit in a corner and cry because apparently the gods of nerf hate you.

Seriously though, open her up and take a few pictures and we can take a look.

What size petg are you using if your darts can fold up?
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#4 Aimless

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Posted 20 August 2008 - 12:12 AM

The only thing i can think of right now that could cause those last symptoms is if your hot glue is severely rubbing against the inside of the barrel.


I initially thought that too, but it still happens with darts that don't have hot glue anywhere near the sides of the darts.

I would probably go sit in a corner and cry because apparently the gods of nerf hate you.

Seriously though, open her up and take a few pictures and we can take a look.

What size petg are you using if your darts can fold up?


Im using the thick walled Modman stuff, same size as OMC's stuff. The short micro stefan was about 3/4" long.

Edited by Aimless, 20 August 2008 - 12:20 AM.

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#5 stickfigure91x

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Posted 20 August 2008 - 12:18 AM

Maybe there is something on the inside of your barrel scrapping the dart, maybe some glue or something. that could explain the ranges, but it would take a sizable piece of glue to mess with ranges that bad.
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#6 serpent sniper

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Posted 20 August 2008 - 12:19 AM

It could just be that your darts are too small for your barrel.

I had an AT2k that I was running with a crayola and pvc setup for stock micros. Most of the time it shot like a beast, but regularly, a dart would become folded over in the pvc.

Look for a barrel material that allows the smallest amount of space around the darts.
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#7 Aimless

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Posted 20 August 2008 - 12:25 AM

Maybe there is something on the inside of your barrel scrapping the dart, maybe some glue or something. that could explain the ranges, but it would take a sizable piece of glue to mess with ranges that bad.


I use couplers for all my barrels so I inspect and clean the barrels regularly, there's some white-ish strings that come off the inside walls during cleaning but it gets worse if I clean them all out, Odd:(

It could just be that your darts are too small for your barrel.

I had an AT2k that I was running with a crayola and pvc setup for stock micros. Most of the time it shot like a beast, but regularly, a dart would become folded over in the pvc.

Look for a barrel material that allows the smallest amount of space around the darts.


The darts have a good fit, you can blow it out, but it won't fall out on it's own.
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#8 mintee

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Posted 20 August 2008 - 12:28 AM

If you have to twist your dart into your barrel then it's too small of a barrel.
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#9 Aimless

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Posted 20 August 2008 - 12:29 AM

If you have to twist your dart into your barrel then it's too small of a barrel.


Nope, no twisting, just an ounce or two of pressure.

Edit: Thanks for your help guys, I guess I'll switch to brass or aluminum now.

Edited by Aimless, 20 August 2008 - 12:46 AM.

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#10 flashflint

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Posted 20 August 2008 - 08:13 AM

I dont think mod man's petg is the same size as omc's, I bought some and had very similar problems.
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#11 mintee

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Posted 20 August 2008 - 02:19 PM

That's why we buy from the source: OMC ftw (though personally I find brass a better fit for my darts, but at $.50 a foot you can't go wrong).
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#12 stickfigure91x

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Posted 20 August 2008 - 11:52 PM

If you have to twist your dart into your barrel then it's too small of a barrel.



Whoa whoa whoa, seriously?!

In the last year I've been lurking i NEVER saw that, I always thought it was too small, but never confirmed it. The 1/2 cpvc I have is so tight i have to twist it, so what should i be using?
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#13 keef

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Posted 20 August 2008 - 11:59 PM

In the last year I've been lurking i NEVER saw that, I always thought it was too small, but never confirmed it. The 1/2 cpvc I have is so tight i have to twist it, so what should i be using?


Try 17/32" brass. My favorite barrel next to CPVC ;)
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#14 stickfigure91x

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Posted 21 August 2008 - 12:04 AM

I can not for the life of me find brass any where. Lots of copper, but no brass. I'm going to check Ace again tomorrow, but what kind of cpvc should i get?
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#15 Red Star

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Posted 21 August 2008 - 12:13 AM

I can not for the life of me find brass any where. Lots of copper, but no brass. I'm going to check Ace again tomorrow, but what kind of cpvc should i get?


Depends on what you want to shoot.
If you want to shoot Micros perfectly, Forget CPVC Get 1/2 SCH40 PVC
But if you want to shoot Stefans get 1/2 SCH80 CPVC
All up to your preferences though.
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#16 stickfigure91x

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Posted 21 August 2008 - 12:17 AM

Thanks a lot dude, thats always been a huge problem with my guns.
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#17 Red Star

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Posted 21 August 2008 - 12:20 AM

Thanks a lot dude, thats always been a huge problem with my guns.


Yea No problem, It happened to me by mistake, I just bought PVC without looking at the SCH and It turns out The Micros shoot about 160ft ;)
Yay for mistakes!
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#18 stickfigure91x

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Posted 21 August 2008 - 12:21 AM

One last thing: where do you find your brass?
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#19 Aimless

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Posted 21 August 2008 - 12:21 AM

I can not for the life of me find brass any where. Lots of copper, but no brass. I'm going to check Ace again tomorrow, but what kind of cpvc should i get?


Depends on what you want to shoot.
If you want to shoot Micros perfectly, Forget CPVC Get 1/2 SCH40 PVC
But if you want to shoot Stefans get 1/2 SCH80 CPVC
All up to your preferences though.


Also, 3/8" SCHD40 has an ID of .483", which makes it slightly larger than the CPVC usually talked about which has an ID of .469".
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#20 washedup

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Posted 21 August 2008 - 12:35 AM

One last thing: where do you find your brass?




Found this linked in an old sticky. http://www.usahobby....rials/metal.php
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