Question regarding RPA Quadlock actions

Discussion in 'Main Message Board' started by GeorgeSpringer, Feb 10, 2015.

  1. GeorgeSpringer

    GeorgeSpringer

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    I just picked up a rifle built on a quadlock action and in a casual conversation with a gunsmith friend he asked if I had purchased any Belleville washers for it. Of course I haven't and didn't know the bolt used them rather than a spring for the firing pin. My question is does anyone know what size Belleville washers are used in this bolt? I found a dealer in England that lists them in their parts lists however I was looking for something closer to home, they get pretty pricey when you consider currency conversion and shipping. Just thought I would throw it out there and see if anyone knows.

    George Springer
     
  2. GSRswapandslow

    GSRswapandslow

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    you can convert it to a traditional spring

    just be aware that the bolt lift on these actions can be rather stiff...with 4 locking lugs and what such
     
  3. Dans40X

    Dans40X Welder

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    Convert the mainspring to a coil spring configuration.

    Contact Alan or Dan Warner for a coil spring to convert your Quadlock.
    www-warner-tool.com
     
  4. Stumpy1

    Stumpy1

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    If you wish to keep the belleville washer stack, the next time you have the bolt apart, measure the inside and outside diameter, and the thickness, take that information, and go here;

    http://www.mcmaster.com/#belleville-disc-springs/=vum6lt

    Metric and SAE versions are available.

    Frank
     
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  5. Rustystud

    Rustystud Site $$ Sponsor

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    Don't know if your gunsmith friend told you the RPA has a Spigot fit tenon. If you do them like a convention tenon you can ruin your action. The Rangemaster web site has a drawing and mention of this fitting.

    May be worth you and your gunsmiths time to check out the "Spigiot" fit barrel.

    I am sure that Allen and Dan Warner are very familiar with what I am speaking of.

    Nat Lambeth
     
  6. kcomeau10x

    kcomeau10x

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    Nate;
    Please provide the website address that you mention. I have an RPA action and am curious about that tenon.
     
  7. steve_podleski

    steve_podleski

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    Don't know why you need to get extra washers; I have two for 15 years with no problems.
     
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  8. Macropod

    Macropod

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    CG designed actions use these and they have a long, long life.

    Yours may well be fine as is.
     
  9. swehrman

    swehrman

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    RPA's web site is http://www.rangemasterprecisionarms.com/

    -- Scott
     
  10. rminut

    rminut

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    Exactly. they went to the belleville setup because the spring setup before (big enough to be a diesel valve spring) had a reputation of breaking firing pins. One of my quadlocks is quite old and still humming along just fine. Warner Tool built my other quadlock and Al never brought up changing a thing.

    The only thing better a Quadlock is having two of them in the safe....
     
  11. Robert

    Robert Silver $$ Contributor

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    Lots of npnsenses about the Belleville Power Pack here and there..

    Contrarily to a coil spring who is permanently compressed at their full force, cocked and decocked, the Belleville are used at some 50% of their nominal forc, and at virtually no load at all when decocked. For this reason, they last indefinitely…

    At 28lbs force when cocked, the impact energy is far superior to the coil spring.

    Lock time is also faster;, as it also allowced to reduce the F.P travel at .153’’.

    There is as many users who want to convert one way or the other. Those who have converted to Belleville have noticed positive points.

    There is no doubt the bolt lift with a 50° opening is slightly superior, but the results makes this easily forgotten.

    DIN2093 OD12,5mm , ID 6,2 , Th 0,5mm and areavailable at McMaster Carr.

    I do not receommend changing to coil spring.

    R.G.C
     
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  12. Rustystud

    Rustystud Site $$ Sponsor

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    Robert:
    www.rangemasterprecisionarms.com

    Nat Lambeth
     
  13. GeorgeSpringer

    GeorgeSpringer

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    Thanks for all the replies. While I know they are probably unlikely to need replacement I am kinda a belt and suspenders guy. If it can break while shooting I would like to have a spare(s) in my shooting box. I have spare firing pins and lever springs for my Sharps rifles and a spare firing pin assembly for Remington type bolts so it made sense to me to have a set of spare Belleville washers. I guess I was being redundant since I have an extra bolt for the action with a different bolt face so I am covered for now. I don't shoot BR matches (I have Panda based rifles if I ever do) so the bolt lift isn't an issue for me.

    Thanks again for your responses.

    GS
     
  14. SBS

    SBS Gold $$ Contributor

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    On the Rangemaster website, I can only find drawings of the barrel tenon for the Quadlite, not the Quadlock. Says they intend to have the specs up sometimes in the future for it. Are they the same or similar?
     
  15. GeorgeSpringer

    GeorgeSpringer

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  16. SBS

    SBS Gold $$ Contributor

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    Thanks, gws, just what I needed. Might have to replace my barrel someday.
     
  17. RPA4life

    RPA4life

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    I honestly couldnt think of any reason to change the Belleville washer system in the RPA bolt..
    Ive run over 20,000 rounds through my Quadlock with original washers.,and have yet to experience a hangfire/missfire/nonfire.

    Steel springs are prone to metal fatigue /weakening and breakages. these washers seem almost indestructable.

    Im sure at some stage they will need replacement, but with premium quality engenearing grease ( nulon G90 grade extreme pressure / extreme temperature grease is my choice of lubricant ) it dos't look like that'll be an issue in the near future .
     
  18. Robert

    Robert Silver $$ Contributor

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    SURE….

    BTW: Bellevilles dimensions are 6,2 x 12,5 x 0,5mm.

    R.G.C
     
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  19. steve_podleski

    steve_podleski

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    I've had my first Quadlock in the mid 90's, still going strong with tens of thousands of rounds.
     
    BobLor likes this.
  20. Robert

    Robert Silver $$ Contributor

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