• yep, the park tool one and it's way over the .75 mark. If I pull the chain from the forward point on the chainring I get probably 5mm of daylight between chain and chainring.

    I don't think I over tension it, usually ends up with a bit of slack at the tightest spot. I would have expected more as well - this is at least the third chain since I built the bike up (4,500km ago). Chainring is a Stronglight 48T which was new 4,500km ago as well so I wouldn't have thought that would be cooked already. Freewheel is an old one though.

    I think I may end up swapping the whole lot out for new to start from a blank slate this time around

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