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Cylinder Bolt Spring

Discussion in 'Blackpowder' started by Smokin'Joe, Nov 4, 2011.

  1. Smokin'Joe

    Smokin'Joe Well-Known Member

    Steel Safety Pin



    Last edited by a moderator: Jul 8, 2014
  2. robert garner

    robert garner Well-Known Member

    Cool , I immediately jumped up and did this for my pocket navy,Thanks
  3. Norton Commando

    Norton Commando Well-Known Member

    Clever tip, thanks for sharing! :)
  4. robhof

    robhof Well-Known Member

    Now I know what to do when my ASM's break their bolt springs, as parts are hard to come by and other Italian parts need modification anyway.
  5. BHP FAN

    BHP FAN Well-Known Member

    my brother and I were doing a similar trick thirty years ago, only ours were formed into more conventional bolt/trigger springs. Now you can buy them from Wolff Springs.
  6. 45-70 Ranger

    45-70 Ranger Well-Known Member

    Nicely done. I have to admit, that is far quicker than making my spring from sheet steel and tempering it for 30 min. This old dog has learned a new trick! I do have to ask, what is the amount of fatigue encountered with the small diameter spring opposed to a larger flat conventional style (old gunsmith here and we always worry stuff like that. It's in our DNA :) )

    Thank you for your graphic display too!

  7. BHP FAN

    BHP FAN Well-Known Member

    That was very clever. I can't say how long his repair will last, but I bet it's way longer than flat springs.
  8. robert garner

    robert garner Well-Known Member

    Smokin'Joe, thanks again, this was a quick and easy fix for a job that I hadn't got around to yet.This may only apply to the pocket models, but the spring was too stiff, the bolt would retract allowing the cyl to turn,but the bolt jumped time and scored the bluing on the cyl, to relieve this, it was only necessary to turn the long leg down till it supplied no pressure, then to turn up a foot up on the end of the long leg to press up on the bottom of the frame, hope this helps.
  9. Smokin'Joe

    Smokin'Joe Well-Known Member


    Realizing that different equipment would require different specifications I opted to caption the second photo simply “Modify” instead of giving exact dimensions. The example shown works very well for my brass frame Pieta .44 cal. It provides softer engagement than the original spring but plenty firm enough for solid lock-up. If you desire a softer engagement use a weaker spring instead of a safety pin. The world is full of springs that are free for the taking and that can be modified for special applications. I have a ball point pen that I got from a bank at no charge. It has three springs in it each one of different tension than the other. Look around and you can find other sources of springs that can easily be reworked for your needs.
  10. BHP FAN

    BHP FAN Well-Known Member

    I had a Jukar Kentucky that had a trigger that rattled, so I filed a ''prong'' into the back of the trigger and used a pen spring like Smokin' Joe mentioned. It worked very well.
  11. Smokin'Joe

    Smokin'Joe Well-Known Member

    A good source of small springs can be obsolete electronics. If the device has some sort of tape or disc drive take it apart before discarding. You should find a few very neat little springs.
  12. 4v50 Gary

    4v50 Gary Moderator Staff Member

    Added to Black Powder Essentials. Thank you Smokin'Joe.
  13. Skinny 1950

    Skinny 1950 Well-Known Member

    Good one Smokin'Joe...why is it the bolt spring breaks but not the trigger spring???
    So when the trigger guard is put back on the spring comes under tension..brilliant.
  14. Black Duck Charlie

    Black Duck Charlie Well-Known Member

    Perhaps it is the longer reach of the trigger spring which keeps it from breaking. A longer reach usually means less actual stress on the material itself.

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