bsa mercury piston head

[Ideot Savant]

again

[Raygun]

Not sure what you've got.

There is the Piston Head, the "O" ring that goes on it and a buffer washer that does between the head and the piston.

ATB
Ray.

[Ideot Savant]

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

[Raygun]

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.

[jonballs]

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

[Raygun]

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.

[Ideot Savant]

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

[Ideot Savant]

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?