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Thread: Pre load query. Spacers or spring coils

  1. #1
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    Pre load query. Spacers or spring coils

    Putting finishing touch to a Goldstar which had 20 mm of buffer/washers at piston end. https://imgur.com/a/jw0gawh
    Spring is straight and square and producing 7 ft. lb. at 15 mm pre load.
    Replicating the decomposed buffers/washers to 40 mm pre load gives 11 ft.lb. so quite acceptable methinks.
    A trimmed Titan No 1 could give the power with no spacers so what's best option.
    A bit of me wants to keep it as found. Thanks for looking.

  2. #2
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    Quote Originally Posted by deejayuu View Post
    Putting finishing touch to a Goldstar which had 20 mm of buffer/washers at piston end. https://imgur.com/a/jw0gawh
    Spring is straight and square and producing 7 ft. lb. at 15 mm pre load.
    Replicating the decomposed buffers/washers to 40 mm pre load gives 11 ft.lb. so quite acceptable methinks.
    A trimmed Titan No 1 could give the power with no spacers so what's best option.
    A bit of me wants to keep it as found. Thanks for looking.
    Personally i prefer the spring to be doing the work rather than loads of preload with washers / spacers.
    The titan may give you a snappier, harsher cycle and I'm no particular fan of titans.
    What about just ordering a standard new mainspring from Chambers ? Only £11.90 and in stock.
    B.A.S.C. member

  3. #3
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    a spaced spring as a system is stiffer
    a longer softer spring generally gives lower initial acceleration and less bounce
    a stiffer spring can make more power (cylinder pressure raises faster) and gives a faster piston acceleration and a quick action.

    I prefer softer, longer.

    This is one reason why sleaved down HW80s shoot so nice - loads of spring room, so they have that softer (true) recoil.

    but you might like it harder, quicker
    Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.

  4. #4
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    I'd guess also that the goldstar is specced with the same spring as the superstar. Details for standard spec are on the mainspring data thread for the superstar.
    B.A.S.C. member

  5. #5
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    Just checked Chambers. MS012 quoted as spring for both superstar and goldstar.
    Thats the way I'd go.
    B.A.S.C. member

  6. #6
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    Thanks for the support as usual. All makes good sense to me.

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