Finely linked chain

Discussion in 'Recumbent bicycles' started by Alpha Beta, Jan 27, 2003.

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  1. Alpha Beta

    Alpha Beta Guest

    To more finely defined gearing ratios, manufactures might try making a finer chain. For example if
    the chain links were half as short you might be able to ge 22-68 cassette and 104-84-60 chain rings
    using the same diameter sprockets and chaing rings. With such teeth, you would be able to more
    finely step the the cassettes. If the rings themselves were thinner, you might beable to fit more
    sprockets onto a cassette.

    Has any manufacture tried to tackle the technical difficulties of this. I am certain that with new
    space age materials, you should be able to make a finer chain link with equivalent strength.
     
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  2. Robert Wand

    Robert Wand Guest

    A chain with a 1/4 pitch would not have rollers or pins large enough to transmit the power for your
    application. Also the tooth profile would be too small for the load.

    Bob Wand Dallas, TX

    "Alpha Beta" <[email protected]> wrote in message
    news:[email protected]...
    > To more finely defined gearing ratios, manufactures might try making a
    finer
    > chain. For example if the chain links were half as short you might be able to ge 22-68 cassette
    > and 104-84-60 chain rings using the same diameter sprockets and chaing rings. With such teeth, you
    > would be able to more finely step the the cassettes. If the rings themselves were thinner, you
    > might beable to fit more sprockets onto a cassette.
    >
    >
    > Has any manufacture tried to tackle the technical difficulties of this. I am certain that with new
    > space age materials, you should be able to make
    a
    > finer chain link with equivalent strength.
     
  3. This method has been used by certain Kunning Konstructors to get big gears on small wheels. The
    pioneers in this field were John and Miles Kingsbury, who used 8mm pitch industrial roller chain in
    the transmissions of their racing pedal cars and early HPV's. Latterly, the Virtual Edge uses a
    similar sized chain for the final drive to the front wheel.

    Dave Larrington - http://legslarry.crosswinds.net/
    ===========================================================
    Editor - British Human Power Club Newsletter
    http://www.bhpc.org.uk/
    ===========================================================
     
  4. Jeff Wills

    Jeff Wills Guest

    "Dave Larrington" <[email protected]> wrote in message
    news:<[email protected]>...
    > This method has been used by certain Kunning Konstructors to get big gears on small wheels. The
    > pioneers in this field were John and Miles Kingsbury, who used 8mm pitch industrial roller chain
    > in the transmissions of their racing pedal cars and early HPV's. Latterly, the Virtual Edge uses a
    > similar sized chain for the final drive to the front wheel.
    >
    > Dave Larrington - http://legslarry.crosswinds.net/

    And lettuce not forget Shimano's "Dura-Ace 10" track group, with its proprietary 10mm pitch chain,
    cogs, crankset...

    Jeff
     
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