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Brommers
@TurtleRecall
Well, I fitted the ultegra cranks. They're 10 speed 130bcd hollowtech 2, 172.5 length. Model is 6601.
The only issue I came across was that the tabs for the inner ring touches the chainstay when the bike's folded, like so.
With careful placement of the cranks prior to folding, I can avoid it hitting it, but I can see it being a ballache worrying about it every time. I guess my options are either drive side spacer between BB shell and BB, or somehow filing/grinding those lips off the cranks.
The chain line with the ring on the outside is 1mm further out that with the standard cranks, pretty pleased with that and would rather not space it if I can avoid it.
Unfolded, the cranks are fine, nowhere near hitting anything and the full fold works fine as long as the first stage of the fold is done a bit more carefully than usual.