14 replies to this topic

[rokor]

Hello everyone. a few months ago I was working on a Longshot, when I wanted to do an Agel breech. I didn't have the tools to work with brass at the time, so I set out to find a barrel material that came in an abundance of sizes. I came across this Chinese market, and there was a fish store. I remembered someone said that PETG was for tanks, so I went in to see what I can get my hands on. I grabed several feet of each and came up with the following...



That is the rear section of a PETG Angel breech.

here are some other angles...


bottom view open.


Top view open.


Top view closed.


And this is my sloppily painted Longshot, which will soon be done by hand, with a Shotty Foregrip.

Edited by rokor, 25 January 2010 - 11:04 AM.

[Icespartan 1114]

I was thinking about this and wondering what sizes to use. Also do you think that the PETG will shatter?

[CrazyIvan VI]

Obviously a singled CPVC is going to be just as powerful. If you get an airtight seal out of the breech, that's all you're going to get.

Unless your darts are a crappy fit.

But excellent job, I don't want to sound like I'm ragging on your mod, it's really great, the only problem is that sized PETG is much harder to find than brass.

Kudos to you.

[TantumBull]

I like it. Good use of materials. Only problem is I can't see it. You think you could post some significantly less blurry pictures?

Edited by TantumBull, 21 January 2009 - 08:26 PM.

[Lt Stefan]

Do you think you could specially order that, and sell it?

[rokor]

Sorry for the blurry pictures. But as I said I'm grounded, and I am in a huge rush oto make use of my time. I can get some better ones tomorrow.

There is a chance I can sell the sizes, but it would not be as cheap as OMC's due to fact I pay 7$ for three feet. But what I could do is buy several bunches at a time and sellthe sizes in 1ft increments at something like $11-$12 for the set, but I would need to know if there is enough demand.

And my darts do have a horrible fit in CPVC, so that is probably the reason I might be able to get better ranges with this set-up.

Thanks for the comments so far.

EDIT: I don't think there is enough force for the PETG to shatter, as I silenced the plunger head with tolet gasket thinger.

Edited by rokor, 21 January 2009 - 08:34 PM.

[ChiliPepperFender]

Nice mod, bad pictures.

[Draconis]

Beat me to it. Nice job! Get us those ranges, as I am anxious to hear what they are.

[mystefansdontflystraight]

You finally got it up and running, good to see. I saw your PETG breeched BBBB at Massacre2 and was pretty intrigued... The only worry I would have is that the PETG would bend under the stress of pushing back the spring.
Anyway, I would gladly purchase some off you, if I could get my hands on a LS...
Nice job.

[nerfer9]

I am interested in buying the PETG for this mod.

[rokor]

Well, outside, the blaster didn't perform to well. Here are the ranges...

62'
67'
42'
57'
56'
63'

When I were to shoot, the dart would leave the barrel with much velocity, then about 10-15' into the flight path, it would curve straight up then curve straight down. I am not sure why this is happening, but I can guess it's because of the 9" barrel. When I first put it together , I used a 12" peice, but my hot glue gun was over heating so when I inserted the PETG into the faux barrel, it bent. I then stuck in a wooden dowel that has a tightish fit and left it in boilling water for a few minutes, but then I couldn't get it out. The only other peice I had was a 9" peice so I figured that should do... I was wrong.

Anyone else have any other theories as to what might be the problem? I am using a Recon/LS spring combo with two O-Rings.

As for me selling the breeches, I would like to know if they are comparable to the brass variation first, and once I get that solved, I will try to find the cheapest way of accomplishing this.

EDIT: Grammar mistakes...

EDIT2: Better pictures will be up as soon as I figure out the problem.

Edited by rokor, 22 January 2009 - 04:54 PM.

[Ner Commando]

That's a pretty awesome mod. Those ranges are good enough for me because I play all my wars inside. Is this anymore durable than brass? Because from what I hear brass can bend very easily.

Edited by Ner Commando, 22 January 2009 - 05:18 PM.

[Mr BadWrench]

I think you need more weight on your darts.

[Draconis]

You need more spring in your plunger too. Adding a recon spring to an LS is like dry humping your girlfriend. It's better than nothing, but isn't really what you're after.

On a related note, I was able to use these same sizes of tubing (I'm planning on doing this breech to my LS as well) to build a variable barrel length Rapid Fire Shotgun turret. Short barrels for the kids, long barrels for wars. Just add 5/8" PETG stubs to the front and rear of the original barrels. I'll post up pictures soon.

[rokor]

Pictures will be updated soon, don't worry. I fixed the aweful range problem, with a BBB spring. Currently there is only a BBB spring and the double O-Ring.



After around 30seconds, there is no need to watch the rest, as I actually broke the set-up(I hope not to mislead you on the reliability though, it was purely my fault, and I used no glue to hole the 5/8 together with the 9/16 and 1/2). It is now fixed and consistently hits the 95' mark, which is very impressive.

As there seems to be enough demand for the PETG I will go out ASAP to buy the material. It will be $11+shipping and you wil be given 1ft of each of the following sizes-9/16, 1/2, 5/8. I know that Angel uses four sizes, but since I didn't dig deeply into his write-up I only used three. I will post a new thread for the sale within the next week. Any question?