• Chainline quiz:

    1x10 Shimano drivetrain with narrow-wide ring up front and 10-speed cassette on Deore FH-M510 ‘9-speed’ freehub, 135mm axle, no spacers on cassette.

    Current chainring is sat 43.5mm from centre of frame and I’m getting slight chain rub on small cogs.

    Should the chainring be further out?

  • no spacers on cassette.

    There’s your problem. There should be a spacer between each cog.

    Jokes aside, does it rub in the largest cog/s? What BB width does your crankset recommend?

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