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  • •

    I don't think I have a socket big enough for the Rotor/P2M spider. How can I get close enough to their required 40-50Nm without resorting to the "until it breaks then back it off quarter turn" method?

    Buy a big enough socket.

    Their own instructions are showing the spider lockring tool in a vice and then tightening via the crankarm. How do they torque it right?
    power2max.de/downloads/power­2max_type-s_manual_web.pdf

    They can't. I suppose you could put the tool in a vice with the chainrings vertically and then use a calibrated weight hanging from the end of the crank to get the torque just right. Seems like hard work though.

  • •

    I want this thing back on the road tonight. I don't have opp. for socket buying and I don't have a bench or bench vice at home to help hold the thing while I try and tighten it.

  • •

    In that case, just do it up nice and tight. If anything, it probably won't be tight enough unless you're using a long spanner or adjustable wrench - 50Nm is a fair whack and requires a decent amount of effort even with a 2' long torque wrench.

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