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Thread: Mainspring data thread

  1. #76
    Join Date
    Jul 2022
    Location
    Chelmsford
    Posts
    9

    Mainspring data thread

    If you have a new spring that is overpowered do you

    1. Cut some coils off and redress/polish the end

    If so what is best method

    Or

    2. Heat end coils to red hot and compress them

    If so how


    Many thanks

  2. #77
    Join Date
    Oct 2023
    Location
    Blckpool
    Posts
    203
    Quote Originally Posted by IainMAD View Post
    If you have a new spring that is overpowered do you

    1. Cut some coils off and redress/polish the end

    If so what is best method

    Or

    2. Heat end coils to red hot and compress them

    If so how


    Many thanks
    Tinbum tuning do a short film on youtube.

    Toni

  3. #78
    Join Date
    Apr 2012
    Location
    Retford, Notts
    Posts
    38,575
    Yes, there are a few tutorials on line. Cut, take off any sharp edges, heat end coil to red, flatten, then dress the spring end so it's flat and smooth and de-burr inside of first coil or two.
    THE BOINGER BASH AT QUIGLEY HOLLOW. MAKING GREAT MEMORIES SINCE 15th JUNE, 2013.
    NEXT EVENT :- May 17/18, 2025.........BOING!!

  4. #79
    Join Date
    Oct 2020
    Location
    Eastwood
    Posts
    1,831
    Quote Originally Posted by TonyL View Post
    Yes, there are a few tutorials on line. Cut, take off any sharp edges, heat end coil to red, flatten, then dress the spring end so it's flat and smooth and de-burr inside of first coil or two.
    As Tony says but if I may add, a very small adjustment to power such as 1/2 a fpe can be made by heating and compressing a coil.
    I asked about this a while ago and I was told shortening by 2mm would achieve 1/2 foot pound which proved correct.
    You can either use a plumbers blow torch or a kitchen gas hob if the missus isn't looking and you can hold the other end while you're doing it.
    Squeeze the coil with some snipe nosed pliers.
    Cutting needs either a Dremel or an angle grinder and a vice.
    You'd best ask others more knowledgeable than me about how much and you will need to cut and say exactly which spring and gun.
    The more I think I know, the more I realise the less I know.

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