Which Groupset?

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ptr in reply to @miro_o

Get the frame faced. Skip this and it'll wear any brand of external BB.

Spoken to two independent bike shops now who have told me this isn't necessary, despite me saying I just want it done as a precaution... it's like they dont want my money?!

I may take it to evans, they've been the only one interested in my business so far. Weird.

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yoshy in reply to @ptr

I recently asking about getting a frame that had been powder-coated chased and faced. The guy seemed to think the same, he said he would chase the threads, but thought facing the shell was a bit unneccessary with a modern bb system

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Dammit in reply to @yoshy

That's exactly the wrong way round - an older cartridge style BB is generally ok with that sort of treatment, a modern external, twin-shell design needs both faces against which it aligns to be parallel with one another.

External BB=face the shell.

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