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Thread: bsa mercury piston head

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  1. #1
    Ideot Savant Guest
    Well, its a ring of spring steel thats just in front of the o-ring and its only function seems to scratch the inside of the cylinder. I have removed it and will try the rifle later tonight.
    I could actually fit a second o-ring in the groove left behind instead, but two o-rings seems a bit silly

  2. #2
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    Quote Originally Posted by Ideot Savant View Post
    Well, its a ring of spring steel thats just in front of the o-ring and its only function seems to scratch the inside of the cylinder. I have removed it and will try the rifle later tonight.
    I could actually fit a second o-ring in the groove left behind instead, but two o-rings seems a bit silly
    I'm lost on that one. I can't think why something like that should be fitted. It also sounds like the groove is a bit wide. Perhaps that's why someone tried to close it up with the metal ring ?
    ATB
    Ray.

  3. #3
    jonballs is offline born to shoot, shoot to hunt, hunt to eat
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    i`ve had 2 of my own and 3 other Mercury's that have had the "metal ring " and have removed them all with no ill effect

    cheers

    jon
    jon barber

    touch wood i`ve never had a bad sale on the bbs

  4. #4
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    Looking on Chambers there is nothing resembling a metal ring on any of the Mercury's or variations.

    As it's not a one off it seems strange that they don't list it

    ATB
    Ray.

  5. #5
    Ideot Savant Guest
    This is a mk1 z serial number one, about 1973 I think. Perhaps they emoved them on later ones.

  6. #6
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    Chambers list all versions of the Mercury including early and late for the Mk1.

    I wonder if someone was selling some kind of "Kit" for them.

    ATB
    Ray.

  7. #7
    Ideot Savant Guest
    Quote Originally Posted by Raygun View Post
    Chambers list all versions of the Mercury including early and late for the Mk1.

    I wonder if someone was selling some kind of "Kit" for them.

    ATB
    Ray.
    The head wis pretty old looking thing, in keeping with the rest of the rifle. The design looks much the same as on chambers, but with a metal ring and it is perhaps a but longer too.
    I'm going to strip it again in the week, I can post up a pic if you are interested Ray?

    Matt.

  8. #8
    Ideot Savant Guest
    Quote Originally Posted by jonballs View Post
    i`ve had 2 of my own and 3 other Mercury's that have had the "metal ring " and have removed them all with no ill effect

    cheers

    jon
    Great, good to know. Bit of a mystery why its fitted at all?

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