• Friend’s 1sp Cinelli has a ‘wobble’ feeling in the rear wheel when riding. I haven’t been able to isolate the issue or the circumstances, but it’s mainly when free-wheeling and it feels like the wheel were shaped like a wavy washer instead of a circle. Any ideas?

    Hub and bearings are good;
    axle isn’t bent;
    locknuts are tight;
    frame isn’t cracked,
    clincher tyre is seated and inflated properly;
    rim is straight and aligned in the dropouts.

    Only thing I can think of is the spoke tension, but I don’t have a measuring tool for them and they all feel/sound ok.

  • Have you tried swapping the wheel(s) out anyway to see if it sorts it?

    If it’s not the wheels might be worth checking frame alignment

  • Anything fitted to the wheel like a reflector (or something much cooler) that would add weight to one point on the wheel? I was surprised recently by how much an unbalanced bike wheel can shift its weight around when lifting the bike up and spinning it by hand.

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