HW77 front stock bracket

Discussion in 'Piston & Spring' started by simona, Mar 5, 2019.

  1. simona

    simona Active Member

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    Hello

    The threads have gone on one side of my front fixing bracket. Is it possible to replace this wonderful bit of bent metal or am I going to have to drill out the hole and go to a larger size?
     
  2. Dale

    Dale Active Member

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    I think replacing the bracket would be very difficult.

    You have two possible options.

    1. Drill and tap to M6,

    or

    2. Get someone competent to weld the hole up and re-drill and tap to M5.
     
  3. simona

    simona Active Member

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    Thanks Dale

    I guess they are the options.
     
  4. ellis d

    ellis d Active Member

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    There is another option Simon, I had the same problem with my hw77, I used some small nut and bolts, the nut was fitted to the inside of the bracket both sides, I had to adjust and trim the bolts a bit because the cocking linkage just cleared the nut and bolt when cocking the rifle literally millimetres, and just enough room to get a spanner in to hold the nut when tightening up.. it worked for me and held up well with no problems through the gp series 2009. It’s a bit fiddly to be honest but it worked... Marc fisher.... also on another note I replaced the white plastic breach seal for o rings like the tx, every thing worked great, I eventually got the bracket redone properly and replaced the breach o rings for the standard seal and I had nothing but problems and gave up with it.
     
    Last edited: Mar 6, 2019
  5. simona

    simona Active Member

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    Hi Marc

    That's a good option, no welding etc! I'll try it and see how it goes, cheers!
     
  6. simona

    simona Active Member

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    These spring guns. We just keep 'improving' them until they break. I recently seem to have left a trail of striped threads behind me. Threads also gone in one half of the trigger case of my LGU monkey metal madness, I've only ever used a tiny screwdriver on it!
     
  7. dave croucher

    dave croucher FT, the sport where simple becomes complicated

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    Dunno what it look like, but if there is enough metal you could try helicoil or similiar
     
  8. JerryD

    JerryD Active Member

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    A bit too thin to helicoil, and tapping out to M6 gives a slightly deeper thread, but fewer turns to grip on. There is a bit of clearance belween the bracket and the cocking lever - is it possible to drill the hols completely clear and get some M5 nuts on the inside of the bracket? Stronger and replaceable - just a bit fiddly to fit. You could superglue them in place then clamp into them when mounting the action in the stock. 3NM - no more!


    .
     
  9. poth

    poth Whafta old Gits world champion

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    Chemical metal then drill and tap or stick the screw in with chemical metal when set screw it out
     
  10. Nick G

    Nick G Active Member

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  11. Scottish Biker

    Scottish Biker New Member

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    I just fixed same problem on my 97 today.
    Used these from ebay, trimmed at red line, drilled hole, push through from behind & a wee bit left to fold over the lug.
    All works perfect & it’s stock is held solid.
     

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  12. Scottish Biker

    Scottish Biker New Member

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    Dechmont ARPC
    Fitted with countersunk black Allen Screws & brass inlay’s.
     

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  13. JerryD

    JerryD Active Member

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    Neat solution! Better than helicoiling or fiddling around with nuts.



    .
     
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  14. Adam

    Adam Well-Known Member

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    What are they called, or have you the ebay item number?
     
  15. imorik

    imorik Member

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    Think they're called chimney nuts
     
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  16. simona

    simona Active Member

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    Thanks guys.
     
  17. Adam

    Adam Well-Known Member

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    :D Sounds nasty, hope it's treatable!
     
  18. JerryD

    JerryD Active Member

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    So they are! 192316248717


    .
     
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  19. simona

    simona Active Member

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    I took my other victim apart earlier, the LGU. It turns out that the replacement extra long stock screw is too extra long. It's forced the two halves of the trigger unit apart and pulled the threads out of the front screw which holds the cassette together. No wonder I couldn't get the thing to hold zero.
     
  20. simona

    simona Active Member

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    I've ordered some chimney nuts. Items which I didn't know existed just 24 hours ago.
     
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