• Have you checked whether the chain rings you have (the Williams and the 5 pin for the Durax) are 1/8" or 3/32"? If they're 1/8" they won't work with the 5 speed block.

    I should mention here, metric and imperial. I am definitely not a brexiteer, but I generally prefer imperial measures. This is especially the case when the subject to be measured was made to imperial measure. So if an English frame was made as, say, 21" I find it irritating to see it described as a metric size. Chains are a case in point since they are virtually all still 1/2" pitch because the standard was set in England. As to width, while 1/8" translates as 3 mm which is , at least, a round number, 3/32" translates as 2.38 mm, which seems completely random to me.

    BTW I've been away for the past few days, and I'm off the internet (intentionally) when I'm at my other place. That's one reason why I go silent from time to time.

  • the Williams and the 5 pin for the Durax) are 1/8" or 3/32"?

    Ah. Haven't checked. I don't have the chainset yet (hoping it'll be posted this weekend.)
    Really appreciate the help, will try and see what the dimensions are keep fingers' crossed.

  • If it turns out you haven't got a 3/32" ring, send me a pm (with a phone no. preferably) and I will go down to my chain ring mine and see what I can dig up for you.

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