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supersport service

Discussion in 'Anything Airgun Related' started by keat63, Jun 24, 2012.

  1. keat63

    keat63 Member

    Messages:
    11
    Likes Received:
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    Location:
    wakefield
    ive owned a bsa supersport from new, after its initial release about 20 odd years ago. its not seen much use, the occasional plinking, and odd rabbit.
    i was young and nieve when i bought it, one of the first things i did was replace the spring with an oxspring.
    took the gun out yesterday after it being stood for a few years, and noticed the breech seal had deteriated to the point it was falling apart with a touch of my fingernail.
    well it is 20 years old, so decided today to give it a strip down and service.i think its due.
    looking at the spring, measring and doing some googling, im convinced its an ox2 which is for a meteor.
    i cant say i noticed any loss of power, but with no means to measure it, i'll never really know.
    so today, ive ordered a replacement stock spring and new piston seal.
    the original piston seal looks ok, and intact. but it is quite hard. is this normal ?.
    and without a chrono, how does the supersport normally stack up as far as ft/lbs goes, from stock.
     
    Last edited: Jun 24, 2012
  2. darklord

    darklord Can’t beat a tx200 at 30m

    Messages:
    2,817
    Likes Received:
    241
    Location:
    NEWBURY
    The old springs are different from the new ones for some reason. i never had issues fitting ox's 20 years ago but mow they twang and vibrate like mad apparently. to be honest id replace all the seals and relube i wouldnt worry about the spring without a chrono. they used to be about 11.3 to 11.5 from new stock.

    after that if it feels low then id look at the spring. old oxs where pretty good in the 80s
     
  3. keat63

    keat63 Member

    Messages:
    11
    Likes Received:
    0
    Location:
    wakefield
    the ox that ive just taken out is 245mm long. it's dimensions seem to match those of an ox2.
    it would appear that i need an ox1 which is 270mm long, so i'm convinced the shop sold me the wrong one.
    not much chance i can complain after 20 years is there.
    any how, ive ordered a standard replacement.
     
  4. darklord

    darklord Can’t beat a tx200 at 30m

    Messages:
    2,817
    Likes Received:
    241
    Location:
    NEWBURY
    later springs seem to be shorter as there is less preload as the steel is stronger. to be honest its worth buying a combro to check. a shorter spring in my experience seems to produce less recoil but dunno the theory behind it.
     
  5. keat63

    keat63 Member

    Messages:
    11
    Likes Received:
    0
    Location:
    wakefield
    with all the red tape, and strict fa laws, im returning her back to stock. the plastic policemen are quite keen around my way.
     

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