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  • You would need to add 2.5mm of spacing either side; due to using different shells this would leave your chainline -4mm compared to using the 135mm hub.
    You could only space one side, leaving the ability to flip the hub somewhat void (wheel would need to be redished to flip); this would give you -2mm chainline.
    Be aware; the female bolt offers 20mm into the hub either side, assuming 4mm dropout, this would be reduced to 15mm on the non drive side.

  • Would it through? If you add spacers to axles the chain line would be the same. Chain line from the centre of the hub/seat tube to the centre of the chainring/cog. It doesn’t make a difference what your OLN is, this won’t change.

    Think about it. If I respaced my bike to 140mm and used two 2.5mm spacers my chainring and cog will still be in the same position.

  • Surly hub has diferent shell, 130mm for 43.5mm chainline, 135mm for 52mm

    so if you pop the 130mm in the 135mm frame, spaced evenly, you are going to be too narrow.

    Think about it. If I respaced my bike to 140mm and used two 2.5mm spacers my chainring and cog will still be in the same position. - OP is not trying to use the same hub respaced.

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