• Collecting up bits to re-build a Raleigh frame for my brother, who has not ridden it for 25 years, what seatpost would normally be correct? (Assume 27.0mm)

  • Assume

    Don't: even knowing the tubeset won't tell you for certain.

    Vernier calipers are your friend here

    Do: 26.4mm and 27.2mm are just as likely.

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