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Actuated Breech Pistol II

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#76 sam

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Posted 04 October 2007 - 11:01 PM

That shit is grooooooooooovy. Before you paint it, you should take some shots of it firing so we can see how the internals work. Nice work, as always.
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#77 CaptainSlug

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Posted 04 October 2007 - 11:15 PM

That shit is grooooooooooovy. Before you paint it, you should take some shots of it firing so we can see how the internals work. Nice work, as always.

It will be able to fire without the covers on so that's how I intend to take the video.
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The little critters of nature, they don't know that they're ugly. That's very funny, a fly marrying a bumble bee. I told you I'd shoot, but you didn't believe me. Why didn't you believe me?

#78 Z-man12

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Posted 04 October 2007 - 11:26 PM

That is comeing along nicely. I can't wait to see it fire.

You are so going to beat me done with the pnumatic semi auto, its not even funny how bad your beating me done... :lol:

Oh well mines much different and it will get done some day...
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I mod nerf guns so they look good. So leave my scopes, doodads, and trinkets alone I like them. I don't mind the weight and I started out that way on toy guns and its not going to change.

#79 Matt31

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Posted 05 October 2007 - 03:41 PM

VERY nice work CS B) , now that is a pistol, almost as big as the LS!

Looking forward to a video. . .
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#80 sam

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Posted 05 October 2007 - 05:57 PM

What will push the dart into the barrel/seal off the breech?
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#81 CaptainSlug

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Posted 05 October 2007 - 05:59 PM

What will push the dart into the barrel/seal off the breech?

It will make more sense once I get the other parts installed, but what the air cylinder is actuating is the PETG Barrel which it slide towards the back of the gun and over the dart. The barrel then seals onto a lip piece with two o-rings.

I haven't done anything today. Feeling too crappy.
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The little critters of nature, they don't know that they're ugly. That's very funny, a fly marrying a bumble bee. I told you I'd shoot, but you didn't believe me. Why didn't you believe me?

#82 CaptainSlug

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Posted 06 October 2007 - 04:09 PM

Now that the forward assembly is 99.5% done I can show how it works.
Posted Image
See the springs?
Posted Image
It's hard to see when most of the parts are clear, but the air cylinder is linked to a "shoe" which will be glued onto the barrel. The "shoe" keeps the top-most dart in the magazine at the correct height for the barrel to later actuate over it.
Posted Image
When the trigger is released the air cylinder actuates the "shoe" and the barrel backwards over the topmost dart...
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And onto this lip piece that has an o-ring making an air-tight seal on the inside of the barrel. The gun is then ready to fire. When the trigger is pulled the pressurized air in the air cylinder and the inline tank will dump into the barrel through the lip piece, and that will fire the dart.
Posted Image
Once the air cylinder is depressurized the springs pulling on the shoe will pull the barrel open and retract the air cylinder, making a complete cycle.

Right now I'm waiting for glue to dry, and there's some final machining work to be done on the shoe so that I can glue it to the barrel.

The most annoying step possible is beyond all of that: running the tubing inside the gun.

Edited by CaptainSlug, 06 October 2007 - 04:10 PM.

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The little critters of nature, they don't know that they're ugly. That's very funny, a fly marrying a bumble bee. I told you I'd shoot, but you didn't believe me. Why didn't you believe me?

#83 shadowkid33

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Posted 06 October 2007 - 06:16 PM

You are my hero.

That thing is amazing, I can't wait to see it in action.
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QUOTE
how the heck do you make a double clip?

QUOTE
Here are the steps.
1. Go to the search button in the right corner of the screen
2. Click
3. Search double longshot clip.

QUOTE
i dont have time, jeez, im new here!

#84 CaptainSlug

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Posted 06 October 2007 - 08:21 PM

I've run into some problems with my current valve, mainly leakage around the trigger rod. I'll see if my quick fix works on monday, but if not I may have to try yet another design. Or an alteration of the current one.

Edited by CaptainSlug, 06 October 2007 - 08:57 PM.

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The little critters of nature, they don't know that they're ugly. That's very funny, a fly marrying a bumble bee. I told you I'd shoot, but you didn't believe me. Why didn't you believe me?

#85 keef

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Posted 06 October 2007 - 09:45 PM

Now that I see it all together, I see how it works.

You really are a genius, aren't you?
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Timothy M-Lick <3

#86 CaptainSlug

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Posted 06 October 2007 - 09:58 PM

I'm going to remake the trigger valve to fix the issues I discovered in the first attempt to route the tubing. A few other parts will have to be remade or adjusted as well, but it will loose up the tolerances between several parts once the changes are made.

You really are a genius, aren't you?

That can be confirmed or denied once it's finished. But yes I would consider myself to have an above-average intellect.

How easily does the magazine slip out of the well? About the same resistance as in a standard LS?

I removed the secondary lock and the magazine now stays firmly in place, but is extremely easy to remove once the mag lock is pulled back.
Posted Image

Edited by CaptainSlug, 06 October 2007 - 10:42 PM.

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The little critters of nature, they don't know that they're ugly. That's very funny, a fly marrying a bumble bee. I told you I'd shoot, but you didn't believe me. Why didn't you believe me?

#87 Z-man12

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Posted 06 October 2007 - 11:25 PM

I understand it all better now that I have pictures. Looks slick.

So I was thinking today. Do you think you might be able to modify this gun to run off a chain feed system.
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I mod nerf guns so they look good. So leave my scopes, doodads, and trinkets alone I like them. I don't mind the weight and I started out that way on toy guns and its not going to change.

#88 CaptainSlug

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Posted 06 October 2007 - 11:30 PM

So I was thinking today. Do you think you might be able to modify this gun to run off a chain feed system.

No, And I will never contemplate something like that considering the amount of work required.
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The little critters of nature, they don't know that they're ugly. That's very funny, a fly marrying a bumble bee. I told you I'd shoot, but you didn't believe me. Why didn't you believe me?

#89 SHADOW HUNTER ALPHA

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Posted 07 October 2007 - 05:55 PM

I really wish I had the tools and machines available to make my work that clean and precise. Out of curiosity, what was the secondary lock? I only recall there being one notch in the LS magazine, so was it a different system altogether?
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The only commonly shared fate among us all is death. I turn to the shadows so that I may not be unfamiliar with hell's corridors when I arrive. - SHADOW HUNTER ALPHA

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#90 CaptainSlug

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Posted 07 October 2007 - 08:45 PM

I really wish I had the tools and machines available to make my work that clean and precise. Out of curiosity, what was the secondary lock? I only recall there being one notch in the LS magazine, so was it a different system altogether?

If you compare this photo: http://www.captainsl...f/abp5k_999.jpg
To this one: http://www.captainsl.../abp5k_9997.jpg
You'll see that the side panel is now a different length. It was originally lined up against the ridges in the center of the side of the magazine rather than with the ends of the rounded part at the top. This allowed the magazine to click into its intended position once inserted. But the spring-loaded lock does a fine job of this anyways and the secondary lock makes it a little more awkward to remove/install the magazine so I got rid of the secondary.

Edited by CaptainSlug, 07 October 2007 - 08:45 PM.

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The little critters of nature, they don't know that they're ugly. That's very funny, a fly marrying a bumble bee. I told you I'd shoot, but you didn't believe me. Why didn't you believe me?

#91 dart

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Posted 07 October 2007 - 11:33 PM

That looks really cool. I wonder how hard it'll sling darts.

me to. Very nice design, great job captainslug.
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I went into the choir room today and told the teacher," I can ony sing base" she said," I can fix that" she gave me a prompt kick in the nuts; i've been singing soprano ever since.

~DART

#92 Blasphemy

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Posted 08 October 2007 - 09:16 AM

I'm really just loving that the whole gun is pretty much entirely clear, it looks sick. I can see you were going for convenience when you made it to fit longshot clips. Having a primary and secondary that only require the same kind of clip can save you some time in a tight battle situation. Which is why I'm assuming you made this as your secondary to one of your longshots, of course! You'll probably make quite a few people cry for their mothers with this beast at hell.
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#93 CaptainSlug

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Posted 08 October 2007 - 12:28 PM

I'm not sure whether or not it will be finished in time for Hell. We'll see.

As for it's intended role: It's meant to be a primary. It should shoot farther, be more reliable, and more accurate than any Longshot.
The main goal of this project was to work around what I would consider the only great part from the Longshot (the magazine). All of the parts where built from the center outward based on the measurements of the Longshot magazine.
The mechanism of the longshot does almost everything in the most inefficient way possible. The design Hasbro came up with had to be built around the air restrictor. A part that all of us just remove, but then we're left with alot of dead space inbetween the plunger and the back of the dart.
The solution was to work in reverse. And instead of having one tube sliding inside of another like all of the other breeches that have been made the limited space dictated the need for a lip piece for the barrel/breech to seal onto.

Edited by CaptainSlug, 08 October 2007 - 12:29 PM.

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The little critters of nature, they don't know that they're ugly. That's very funny, a fly marrying a bumble bee. I told you I'd shoot, but you didn't believe me. Why didn't you believe me?

#94 CaptainSlug

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Posted 09 October 2007 - 05:06 PM

Okay, some progress to report.
Sunday night nearly gave me a heart attack. Alibre Xpress was telling me that my design files for this gun were corrupted, it wouldn't let me edit or delete anything. However I was able to copy the sketches and paste them into a new clean file and everything seems fine now.

Valve number 10 is finished and is working miles better than any of the previous versions. It's a 3-port variation of Boltsniper's push-button valve and was made with just a lathe and drillpress.
Posted Image
The shoe and barrel/breech are being solvent-welded together tonight.
I need to make one or two replacement frame pieces and then I can mount the valve in the gun. Once that is done I should be able to test everything together.
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The little critters of nature, they don't know that they're ugly. That's very funny, a fly marrying a bumble bee. I told you I'd shoot, but you didn't believe me. Why didn't you believe me?

#95 CaptainSlug

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Posted 10 October 2007 - 09:50 PM

I'm getting very close, just a few adjustments on the trigger and the 5th revision of one of the frame pieces is needed before I can test this gun again. I had previously neglected to design a slide for the trigger and it was causing hinging problems on the valve, so I had to alter and remake a few things.

So far this project has been providing daily design challenges that require new adjustments. And no matter what kind of problem I've run into I've been able to develop a contingency plan. I should have a working arrangement now, but if something unforeseen pops up I still have some ideas on how to cope with it. The process has been very enlightening, and it's only been a few weeks.

New pictures coming soon.

Edited by CaptainSlug, 11 October 2007 - 08:57 AM.

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The little critters of nature, they don't know that they're ugly. That's very funny, a fly marrying a bumble bee. I told you I'd shoot, but you didn't believe me. Why didn't you believe me?

#96 CaptainSlug

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Posted 11 October 2007 - 07:31 PM

Everything working at the moment. I need to take it apart and teflon tape or goof the threads of the fittings on the trigger valve because I didn't bother to do so for the mock-up. Other than that I can't find any other leaks and it's working just as I wanted to. I ran out of tank capacity doing dry tests before I could test fire darts outside.
Posted Image

Video

Edited by CaptainSlug, 11 October 2007 - 07:44 PM.

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The little critters of nature, they don't know that they're ugly. That's very funny, a fly marrying a bumble bee. I told you I'd shoot, but you didn't believe me. Why didn't you believe me?

#97 deaddumpster

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Posted 11 October 2007 - 07:35 PM

Apparently I was the first one to view the video and post about the 99.999% finished product. Beautiful, just beautiful! I'm going to guess you're taking this to Hell with you?

EDIT: Is this going to be one of those homemades where it's all custom machined and the only way someone could build it is if they had the schematics and a fuck-load of money?

Edited by deaddumpster, 11 October 2007 - 07:41 PM.

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QUOTE(VACC @ Jan 15 2009, 01:55 PM) View Post

I've said it before, and I'll say it again. A good nerf gun is like a good woman. It shouldn't require extra lubrication.

#98 Z-man12

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Posted 11 October 2007 - 07:37 PM

Yeay we finaly totaly get to see what your doing. Its all so clear now.

I can't wait to see it sling off darts.
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I mod nerf guns so they look good. So leave my scopes, doodads, and trinkets alone I like them. I don't mind the weight and I started out that way on toy guns and its not going to change.

#99 CaptainSlug

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Posted 11 October 2007 - 07:42 PM

I'm going to guess you're taking this to Hell with you?

I'll probably be taking it even if I don't get it 100% done because there are people that want to see it.

Is this going to be one of those homemades where it's all custom machined and the only way someone could build it is if they had the schematics and a fuck-load of money tools?

Yeah, pretty much. None of the machining was what I would consider very difficult and was all done with a drillpress, scrollsaw, and bandsaw. Only a few parts were cut with the tablesaw, and the shoe part that I glued to the barrel/breech had to be cut on it's edge using the mill so I could get a good joint. But I could have sanded it using a stone grinding bit instead if I had the right size.
I'm sure if I handed a complete set of templates and assembly drawings to KBarker that he could probably build one himself, but he has access to the same tools and as far as I know is just as proficient with them as me.

This is not a simple gun by any means and I don't anticipate anyone else being able to make one that's similar any time soon. The REAL work was in getting the first one working. Making another wouldn't be anywhere near as difficult. Not that I plan to make another anytime soon though.

Edited by CaptainSlug, 11 October 2007 - 09:32 PM.

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The little critters of nature, they don't know that they're ugly. That's very funny, a fly marrying a bumble bee. I told you I'd shoot, but you didn't believe me. Why didn't you believe me?

#100 deaddumpster

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Posted 11 October 2007 - 07:45 PM

I'm going to guess you're taking this to Hell with you?

I'll probably be taking it even if I don't get it 100% done because there are people that want to see it.


Yo... I'm one of those. We'll all be staring, bowing down and running in fear if it actually get's finished by then.
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QUOTE(VACC @ Jan 15 2009, 01:55 PM) View Post

I've said it before, and I'll say it again. A good nerf gun is like a good woman. It shouldn't require extra lubrication.


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