• New to power meters, my bike at the min has a hologram si crankset and I have impulse bought a hologram si crankset with a power2max power meter on it. The power meter crankset is not the crank length I usually ride. Can I just take the spider rings off my crankset, take the power meter and chainrings off the other and swap them over?

  • Yes. You'll definitely need the correct spider removal tool, and it's tricky to do without a vice, a large socket and a torque wrench, but it's certainly possible. Just undo the spider lockring and switch the Spiderring for the P2M unit and chainrings. And then replace the lockrings, obviously.

  • Yes, assuming you don't want to use the Spiderings as I'm pretty sure you can't do that with P2M spider. You need the correct P2M lockring tool, a vice with soft grips, maybe some hot water to free up the existing loctite, a big torque wrench and two types of fresh Loctite - one is for the splines and one is for thread-locking the lockring.

    https://www.youtube.com/watch?v=f-_mdaKAaHQ

    Loctite Compounds 638 (spline) and 243 (lockring threads)

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