Old bike chain specifications

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  • Old bike chain specifications
  • Shimano did a 10mm pitch Dura Ace in the late 70’s. There was inch pitch back in the day too.

    Just too thick? You won’t get 10s over a 3/32 chainring properly).

    Locoboy
    Member

    SInce the dawn of time (well the last 40 years or so) have all bike chains been the same 1 inch spacing?

    I’ve bought a ‘vintage’ chain ring and cranks from ebay for a bike themed project (I don’t need to ride it) I’ve tried to put a modern day MTB chain around it and the teeth spacing doesn’t seem right to fit the chain.

    Did they have different chains back in the day?

    Ta

    Locoboy
    Member

    Its not the thickness its the spacing between the teeth / chain rollers.

    dovebiker
    Member

    Apart from inch-pitch, half-inch chains have been the norm since the 1920s with the exceptions of the 10mm Shimano DuraAce from the 1970s. The width of the chain has got progressively thinner as the number of cogs increased – from 1/8″ we went to 3/32″ and then along came 8 speed and they’ve got progressively narrower.

    Premier Icon Onzadog
    Subscriber

    Is it way, way out, or is it just really badly worn?

    Fagus
    Member

    I’ve recently put an 8 speed chain on my 3/32 fixie. So far no problems.

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