When life gives you lemons...

[Guinessisgoodforyou]

It's 27.2mm I've just rebuilt one.

 

[Squaredisk]

Thank you @pigman and @Guinessisgoodforyou. I was just dubious based on my abilities, so worth a double check

 

[Guinessisgoodforyou]

Thank you @pigman and @Guinessisgoodforyou. I was just dubious based on my abilities, so worth a double check

Never hurts to ask they are a really nice bike.