While talking to the man plastering our wall the other day, it turns\nout he's a cyclist, so the subject turned, as it always does, to\nreplacing broken drive-side rear spokes. He mentioned he'd used a\ngadget small enough to carry on tours which would loosen a cassette\nlock ring (By bracing against the chain stays? Not sure.) without\nrequiring a chain whip.\n\nHaving googled, I can't find anything like that. Was he mistaken or\nam I just not cut out for googling? Anyone heard of such a gizmo?