Recumbent bicycles · Public discussion

Finely linked chain

Started by Alpha Beta · · Last activity · 4 posts · 1,261 views

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Recumbent bicycles
Published
28 January 2003
Last activity
28 January 2003
Original author
Alpha Beta
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4
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  1. 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.

  2. 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 hidden]> wrote in message
    "]news:[email hidden]...

    Quoted message said:

    To more finely defined gearing ratios, manufactures might try making a


    finer

    Quoted message said:

    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

    Quoted message said:

    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 - legslarry.crosswinds.netlegslarry.crosswinds.net
    ===========================================================
    Editor - British Human Power Club Newsletter
    bhpc.org.ukbhpc.org.uk
    ===========================================================

  4. "Dave Larrington" <[email hidden]> wrote in message
    news:<[email hidden]>...

    Quoted message said:

    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 - legslarry.crosswinds.netlegslarry.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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