The right number to set the chain length correctly, is it correct now?
If it is correct now, the wrap on the larger chainring has changed by 1.5 teeth (as it only wraps 180 degrees), so depending on which end of the tolerance it was you may ideally need to remove 1 pair of links or none at all.
I assume the chain length is currently correct - it's a friends bike, not mine. I will double check before putting on the new chainset though.
One more query then, when the new chainset goes on will the front mech need lowering? Is anything else needed? It's di2 so the front mech should auto tune right??
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If it is correct now, the wrap on the larger chainring has changed by 1.5 teeth (as it only wraps 180 degrees), so depending on which end of the tolerance it was you may ideally need to remove 1 pair of links or none at all.
I wouldn't bother, that way you can refit a 53T !
I assume the chain length is currently correct - it's a friends bike, not mine. I will double check before putting on the new chainset though.
One more query then, when the new chainset goes on will the front mech need lowering? Is anything else needed? It's di2 so the front mech should auto tune right??
Thanks