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Thread: HW 35 Piston Seal Change

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  1. #1
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    HW 35 Piston Seal Change

    I've just read today that Weihrauch made the change from leather to Nylon piston seal on HW35s at serial number 843636 in 1980.




    Just thought I'd post it here for reference.




    All the best Mick

  2. #2
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    Thanks for that Mick. Some very relevant info for the HW35 nuts amongst us - me included.
    ATB
    Eric
    Demic, miserable, grumpy old git! Feinwerkbau Sport Appreciation Society.
    I don't mind what sexual, religious or political persuasion you are, just don't impose them on me!!

  3. #3
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    Thanks for that.
    'Every day is .'

    ATB
    Ian
    Founder & ex secretary of Rivington Riflemen.
    www.rivington-riflemen.uk

  4. #4
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    Quote Originally Posted by T 20 View Post
    I've just read today that Weihrauch made the change from leather to Nylon piston seal on HW35s at serial number 843636 in 1980.




    Just thought I'd post it here for reference.




    All the best Mick
    Please can you let us know where the information was obtained. Cheers

  5. #5
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    Quote Originally Posted by HW55T View Post
    Please can you let us know where the information was obtained. Cheers
    No problem John

    It's from a book I've probably read a thousand times and never noticed the info before.

    http://i1138.photobucket.com/albums/...8012006186.jpg

    And on page 162 under HW35EB we find this.

    http://i1138.photobucket.com/albums/...8012006188.jpg

    I found this by accident when I was trying to find out when the HW77 was introduced.
    Autumn 1983 is the nearest I can find on that one ?



    All the best Mick

  6. #6
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    Hw35

    Excellent bit of work Mick. I am off to check my "never been apart 35E" which is from around that period. Mind you whatever seal its got, leather or nylon it does 10.8ftlb to 11ftlbs in .22 with a slightly tired spring.

  7. #7
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    Quote Originally Posted by coburn View Post
    Excellent bit of work Mick. I am off to check my "never been apart 35E" which is from around that period. Mind you whatever seal its got, leather or nylon it does 10.8ftlb to 11ftlbs in .22 with a slightly tired spring.
    If I told you what they'll do with an O ring piston head and spring with no preload you wouldn't believe me.

    No wonder everybody wanted one back in the 1970s.



    All the best Mick

  8. #8
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    While we are on the subject of HW35 trivia Dennis Hiller [looks to the east and bows very low] writes - 'Up to serial number 754999 they have 12mm (*) scope groove and from 755000 they have a 9mm groove".

    * I always understood it as 13mm but who am I to argue with God.

    ATB
    Ian
    Founder & ex secretary of Rivington Riflemen.
    www.rivington-riflemen.uk

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