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abowden
killerbunny
JWatt7
thestick
8 posters

    The "Stick Breech"

    thestick
    thestick


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    The "Stick Breech" Empty The "Stick Breech"

    Post  thestick Sun Mar 27, 2011 4:38 am

    So I was having trouble sleeping the other night, so I started thinking and had this idea to make a breech that closes automatically. I had two reasons for wanting a breech like this. The first is so that it would be faster to reload and the second was to make sure that there was always a good seal when the breech was closed.
    So I took a walk around Bunnings the next day and grabbed some bits and pieces and came up with this. I call it “The Stick Breech”

    So I started with a normal PETG/20mm orange conduit breech. Here’s a quick write-up:

    Materials:

    1 x 16” length of PETG
    1 x 16” length of 20mm orange conduit
    1 x 2” length of 10mm aluminium tube
    E-tape

    The "Stick Breech" Cimg1618

    Alrighty then. Mark out a dart sized opening 1” from the end of the 20mm conduit and use whatever tool you like to cut the opening (I used a Dremmel with a cutting bit).

    The "Stick Breech" Cimg1619

    Now get your pipe cutter (hacksaw/whatever) and cut a small amount off the end furthest from the dart opening (make sure the piece that you cut off is long enough to fit into your hand. About 4”-ish).

    Take the piece of aluminium tube and wrap e-tape around it until it fits snugly into the end of the conduit. Make sure you leave 5-10mm at both ends of it free of tape. Once this is done, shove it into the end of the conduit closest to the dart hole. Hot-glue it in.

    The "Stick Breech" Cimg1620

    Okie dokie, almost there. Grab the piece of conduit that you cut off and attach it to one end of the PETG (I e-taped the PETG until it fit snugly, then glued it). Put a bit of e-tape on the rest of the PETG so that it slides nicely into the conduit.

    That’s kind of it for that part.

    Now on to the spring loaded part. For this you will need the following:

    Materials:

    2 x 20mm conduit end caps
    2 x screw eyelets
    1 x c-31? Spring (you could use either a c-311, c-313 or c-315. maybe a c-319. but they all vary in length and strength a bit)
    1 x length of 16mm grey conduit (bit longer than the spring)
    1 x length of 20mm grey conduit (same length as above)

    The "Stick Breech" Cimg1611

    All of this can be obtained from Bunnings.

    Let’s start with the end caps. Drill a small hole in it (large enough for the eyelet to screw into). Now screw the eyelet into it. Then cut the tip of the eyelet screw off so that it doesn’t go round hurting people (I tried using a Dremmel with a cutting disk for this but it heated up the eyelet so much that it melted the end-cap. I suggest using a pair of side-cutters). Do the same for the second end-cap and then we can move onto the conduit.

    The "Stick Breech" Cimg1612
    The "Stick Breech" Cimg1613

    Like I mentioned in the materials list, the 16 and 20mm conduit should be pretty much the same length and this length should be longer than the spring by a couple of inches so that the spring will always be in tension, therefore, when the spring attachment is attached to the breech, it will hold it closed.

    Once you have your 16mm and 20mm conduit cut to length, then cut a 3” section off the end of both lengths.

    So now we are ready to put the spring loader together. Start by attaching the spring to one of the eyelets. Next slide the 3” piece of 16mm over the spring and into the end-cap attached to the spring. Then slide the larger piece of 16mm over the spring. Now get the larger piece of 20mm over the top of the 16mm. Lastly slide the 3” piece of 20mm over the end of the 16mm.

    The "Stick Breech" Cimg1614

    The next bit is like the trickiest part of the whole thing. I used a piece of coat hanger wire with a very small hook bent into it to get the end of the spring from down in the conduit. Once I had stretched the spring far enough I grabbed it with long nosed pliers and attached it to the other end-cap.

    The final step in making this is to glue it up. I used a bit of Selleys Gel Grip around the end-cap and glued the end-cap to the piece of 16mm and 20mm conduit closest to it. And I did the same for the other end-cap.

    The "Stick Breech" Cimg1615

    Now. You can use glue to attach the spring loader to the breech, but it was getting late so at the time I just used e-tape. I haven’t replaced the tape with glue yet, and I don’t really plan to.

    The "Stick Breech" Cimg1621

    Just a couple of things to note with this setup:

    This will add a bit of weight to the end of your barrel.
    I am sure that smaller springs can be used, but I didn’t see one at Bunnings that I liked.
    Maybe someone wants to experiment with bungee/elastic cord type stuff.
    The spring I used was not cheap, coming in at just under $14.

    Here are a couple of pics of the breech attached to blasters

    The "Stick Breech" Cimg1616
    The "Stick Breech" Cimg1617

    -Dan
    JWatt7
    JWatt7


    Posts : 55
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    Age : 24
    Location : Melbourne, Vic

    The "Stick Breech" Empty Re: The "Stick Breech"

    Post  JWatt7 Sun Mar 27, 2011 7:41 am

    I like it - Does that mean you open - load bullet then you close it? It would be cool if it was epoxied aswell. Good idea - you could almost do it on a smaller scale to a nitefinder?
    killerbunny
    killerbunny


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    The "Stick Breech" Empty Re: The "Stick Breech"

    Post  killerbunny Sun Mar 27, 2011 7:58 am

    I like it when people have original ideas and just go for it. Instead of people just re-shelling air guns. Nice work.
    abowden
    abowden


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    Post  abowden Sun Mar 27, 2011 8:22 am

    wow, pretty awesome But I use clip system guns.
    thestick
    thestick


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    The "Stick Breech" Empty Re: The "Stick Breech"

    Post  thestick Sun Mar 27, 2011 8:22 am

    JWatt7 wrote:I like it - Does that mean you open - load bullet then you close it? It would be cool if it was epoxied aswell. Good idea - you could almost do it on a smaller scale to a nitefinder?

    It is designed to be used with a clip, so you put the clip on, open the breech and let go. The spring will close the breech and the dart will be loaded. Note that you can do this multiple times to shotgun load.

    Oh, and I did use epoxy for any parts that were glued.
    JWatt7
    JWatt7


    Posts : 55
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    Post  JWatt7 Sun Mar 27, 2011 8:42 am

    Sounds like it would be very effective, I love it when we have super ideas you try it and they come together don't you :))
    Reconzor
    Reconzor


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    Post  Reconzor Sun Mar 27, 2011 9:10 am

    killerbunny wrote:I like it when people have original ideas and just go for it. Instead of people just re-shelling air guns. Nice work.

    I see what you did there...


    On topic: Awesome breech Stick. How much are those springs anyway? (The ones from bunnings)
    thestick
    thestick


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    Post  thestick Sun Mar 27, 2011 9:23 am

    Reconzor wrote:
    On topic: Awesome breech Stick. How much are those springs anyway? (The ones from bunnings)

    Not cheap. Like $13-14 each. but you might be able to fine another appropriate one elsewhere for less.
    Xoenz
    Xoenz
    Donator
    Donator


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    Post  Xoenz Sun Mar 27, 2011 9:24 am

    Hey, mate could you put up a video. I'd really like to see it in action =]
    thestick
    thestick


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    Post  thestick Sun Mar 27, 2011 9:31 am

    abowden wrote:wow, pretty awesome But I use clip system guns.

    Well then this will be goo for you once you get a blaster that you coupler, because you will have plenty of clips to use with it

    Xoenz wrote:Hey, mate could you put up a video. I'd really like to see it in action =]

    Maybe if I get around to it. I have heaps of stuff on my plate ATM tho
    RL
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    Post  RL Sat Apr 02, 2011 3:04 am

    Hmm I just did a breech with 20mm orange conduit and PETG. I've found with my BBUMB that sometimes it creeps a bit forward when I'm shooting it with individual darts (no clips). The spring idea is great - but I'm a bit worried about the added weight of the extra conduit and the compression spring?
    thestick
    thestick


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    Post  thestick Sat Apr 02, 2011 5:09 am

    2120 wrote:Hmm I just did a breech with 20mm orange conduit and PETG. I've found with my BBUMB that sometimes it creeps a bit forward when I'm shooting it with individual darts (no clips). The spring idea is great - but I'm a bit worried about the added weight of the extra conduit and the compression spring?

    If the barrel is sliding forward and you don't want to add a spring, try adding some more e-tape to the barrel so that it is a tighter fit in the conduit.

    I havnt had any problems with the added weight of the spring system on my blaster. But I havnt tried it in a war yet.

    And lastly. It's an extention or tension spring
    RL
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    Post  RL Sat Apr 02, 2011 6:01 am

    lol yeah sorry - mixed them up.

    Have you had problems with the breech coming back and biting on the bullet?
    CaptainSurprise
    CaptainSurprise


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    Post  CaptainSurprise Sat Apr 02, 2011 9:02 am

    Hahah, I'm so putting this on my NF just for major lolz
    RL
    RL


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    Post  RL Sat Apr 02, 2011 10:07 am

    Would there be enough power from the NF that it justifies a breech length barrel?
    thestick
    thestick


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    Post  thestick Sat Apr 02, 2011 10:34 am

    2120 wrote:lol yeah sorry - mixed them up.

    Have you had problems with the breech coming back and biting on the bullet?

    I haven't had that problem yet. Try putting e-tape only on the "bottom" side of the PETG when you are trying to get a tight fit, that way the barrel will line up with the darts better.

    2120 wrote:Would there be enough power from the NF that it justifies a breech length barrel?

    If you made a short barreled breech it would work.
    RL
    RL


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    Post  RL Sat Apr 02, 2011 11:08 am

    what length are we talking about?

    thanks for being so accommodating with your answers, haha
    thestick
    thestick


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    Post  thestick Sat Apr 02, 2011 1:08 pm

    2120 wrote:what length are we talking about?

    thanks for being so accommodating with your answers, haha

    Ok, so lets do some rough measurements...

    1 inch from the breech to the start of the barrel
    3 inches for the breech
    1 inch from the breech to the end of the first part of the barrel
    1 inch for the second part of the barrel

    total = 6 inches

    That is probably as short as I would make it. But you could probably make it a bit shorter if you want.

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