That's SS though. With gears and the resulting wonky chain line it's likely the chain will be pulled off the ring and dropped on to the BB shell.
You'd need a retainer device if you use a ramped and profiled ring.
@Howard started
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That's SS though. With gears and the resulting wonky chain line it's likely the chain will be pulled off the ring and dropped on to the BB shell.
You'd need a retainer device if you use a ramped and profiled ring.