Page 1 of 2 12 LastLast
Results 1 to 10 of 20
  1. #1
    Son of Kalashnikov Boris's Avatar
    Join Date
    Jan 2011
    Location
    Back from Motherland
    Posts
    14,312

    Default AK – remove your worst barrel pin (pic heavy)

    Greetings comrades! May your glass be always full of vodka and the fire of pride for the glorious motherland burn bright in your heart. I am working hard on restoring a RomyG to its former glory, the time when capitalists and bourgeoisie trembled in their expensive baby seal shoes at the barrel of a AK47 pointing at them from the East.

    Barrel pins were put to retain barrels in the front trunnion and such a good job did the drunk bearded ladies of Romania, it’s easier to remove pipe from comrade’s Stalin’s mouth.

    I shaped a piece of steel to support the ornate shape of the trunnion, while I remove the pin with a chisel and a hammer. That did not work good. In fact I heard the pin laugh at me. I used air hammer and it did not move. I begged, I yelled, I went down on my knees and wept. I told it all about it’s mother, it’s sisters, grandmother and it refused to listen to me.



    I had to cover comrade’s Kalashnikov picture while I contemplated unthinkable … actually making right tools for the job! I have shaped a block of aluminum to mate with the trunnion perfectly like a Donkey Kong with Princess Peach. I have created a top plate so that I can guide a chisel completely drunk and can’t see where it suppose to go. Also, the top plate secures the contraption to the barrel, so when my hands are shaking with a hangover it'll line everything up.







    Then I approached a 3 tonne press. It has a crevice in the ram which allows to hold steady a tool for the time’s when I can’t. I pressed and bent the cheap Chinese drill bit.





    I decided to double the effort by going to a 6 tonne press. I drilled a ¼ hole in the ram to support a piece of ¼ drill bit as the punch. I pressed and bent the cheap Chinese drill bit.



    For a long time, a number 3.333333… appeared in my head. I figured that I need to increase the effort 3.33333… times and use 20 tonne press instead.

    ... yeah, I bent the pin. This time it was 1/4 drill rod tool steel. It pancaked under pressure.




    I was desperate. I have offered comrade Kalashnikov an entire bottle of vodka in exchange to the secret to remove barrel pins. I studied the knowledge of web. What made a lot of sense are two methods to remove barrel pins. One was to use a HF vise made by comrades in China, clamp the trunnion with a pin pressing on it, tighten it and hit the vise like a red headed enemy of the people. Then I heard comrade Flintoid speak of hitting the top of the arbor press and it all made sense. As you hit the chisel, it will resonate, slip and otherwise dissipate the energy of a perfectly good hammer blow. I figure that three things must happen:

    1. You need a heavy anvil that will not bounce away easily under a strong blow.
    2. You need to press the chisel to the pin hard, so that the energy of the hammer blow will transfer elastically straight to the pin.
    3. You need to hold entire jig together while holding your glass.

    so I have created this contraption. The thing that looks like comrad Stalin's sex toy is the anvil. Two 1/2 bolts secure the top plate which holds the punch that was ground down from the air-hammer.



    I sprayed the threads with some WD-47 and tightened ... how you say it? ... the p*ss out of them.



    now, I do not kid you. I took one swing with a 4# hammer, a child's toy, and the pin moved. I was so happy, I took the barrel out of the rig and tried to use regular punch. No luck. I got nowhere. Back in the rig, it took few swings of the hammer to drive the pin completely out.

    There was something, I don't know what in the hole, it ripped the groove in the pin as it moved out. If you stare at these two images, you will see what I mean in 3D:










    This shows you how a bottle opener and a hammer (... and comrad Stalin's sex toy) can hasten the triumph of world communism!


  2. #2
    Finalygotabeltfed
    Guest

    Default

    Yep, a BFH is the best way. Haven't had one yet that took more than three hits to drop out.

    If its all galled up be sure to dress it up before you reinstall.

    If you haven't driven the barrel out yet, check the pin hole and clean out any galling in there beforehand so it doesn't damage the trunnion on the way out. Don't open up the barrel groove or it will effect your headspace when reinstalled. Just push out any large debris.

  3. #3
    NES Member radioman's Avatar
    Join Date
    Jul 2009
    Location
    N.C.MA, NRA Life Member
    Posts
    2,590

    Default

    How come every time I hear anything about an AK the first thing said is how simple they are??? From what I hear on NES they seem to be a royal PITA?? I'll stick with my very simple AR!
    ...That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new government... ...it is their right, it is their duty, to throw off such Government, and to provide new Guards for their future security.

  4. #4
    Registered User
    Join Date
    Feb 2010
    Location
    Pioneer Valley
    Posts
    2,206

    Default

    Quote Originally Posted by Boris View Post
    Greetings comrades! May your glass be always full of vodka and the fire of pride for the glorious motherland burn bright in your heart. I am working hard on restoring a RomyG to its former glory, the time when capitalists and bourgeoisie trembled in their expensive baby seal shoes at the barrel of a AK47 pointing at them from the East.
    I am comfortable saying with the utmost confidence... if you and Flintoid ever work together on a build and co-create a thread describing the debacle, we can close the Epic Thread link in the Member's Section because there'll be no topping that. Between you and Flintoid, I've actually injured myself laughing too hard.

  5. #5
    NES Member Donvin999's Avatar
    Join Date
    Apr 2011
    Location
    behind you;-)
    Posts
    1,920

    Default

    You sir are hilarious!!! When I decide I must build me own ak thinking of a psl actually I must buy u a bottle of vodka!!!

  6. #6
    Banned
    Join Date
    Sep 2009
    Location
    your tight sphincter
    Posts
    5,496

    Default

    Quote Originally Posted by radioman View Post
    How come every time I hear anything about an AK the first thing said is how simple they are??? From what I hear on NES they seem to be a royal PITA?? I'll stick with my very simple AR!
    toys are pretty easy to assemble.

  7. #7
    Finalygotabeltfed
    Guest

    Default

    Quote Originally Posted by flintoid View Post
    toys are pretty easy to assemble.
    True!

  8. #8
    Registered User
    Join Date
    Apr 2011
    Location
    Not the land of the free but the home of the brave!
    Posts
    410

    Default

    When trying to remove these tough pins the SHORTER the punch the less likely it will bend. The more force will be transfered downward where you want it. It's better to get the stuck pin moving with a short punch then use one a little longer and so forth till the pin is removed.

  9. #9
    NES Member xtry51's Avatar
    Join Date
    Feb 2010
    Location
    NH (CT Escapee)
    Posts
    17,845

    Default

    LMFAO, awesome post Boris.
    Si vis pacem, para bellum - If you wish for peace, prepare for war

    Have you heard about the vast Libertarian conspiracy? We want to take over the government and then.... Leave you alone.

  10. #10
    NES Member beaker's Avatar
    Join Date
    Jun 2009
    Location
    LV-426
    Posts
    7,621

    Default

    Hilarious, well done.

    Sent from my Droid using Tapatalk
    Who is John Galt?

    “Political tags — such as royalist, communist, democrat, populist, fascist, liberal, conservative, and so forth — are never basic criteria. The human race divides politically into those who want people to be controlled and those who have no such desire.” — Robert A. Heinlein

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •