• I’ve also been told that using engineers’ Marking Blue is good to ensure an even mating surface between cotter pin and spindle.
    I’ve basically done what’s described above in the past, which I would have probably read in Richard’s Bicycle Book - a pre internet English Sheldon Brown.
    I learned a lot from that book.
    I haven’t regularly ridden a bike with a cottered chainset for a looong time, but I used to ride for years all over London on a 1920s Humber with rod brakes and steel rims.
    Deadly.

  • Permanent marker can often be used as an alternative to engineers' blue as a way of finding the contact points - easier to control and much easier to clean off hands clothes dogs and carpets.
    +1 for Richard's Bicycle Book - it might be an age thing but I still find a book better on a work bench than a laptop or phone, especially when things are being made to fit with a hammer.

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