Magene P505 torque wrench adapter
Print Profile(1)

Description
While the Magene P505 power meter crankset comes with an adapter for installing the lockring with a typical bottom bracket tool, I do not own that tool, I have the style that look like typical ratchet sockets and those won't work with the Magene P505 because of the 24mm shaft that would need to pass through the middle where the ratchet would attach. So I designed an offset adapter that lets you use a ½" torque wrench to properly torque the lock ring rather than just guessing with one of the flat hand tools. The called for 35-40 N*m torque is probably more than most people are going to apply with the flat hand wrench style of bottom bracket tool. To use this correctly the adapter should be positioned perpendicular (90*) to the shaft of your torque wrench. I'd probably also aim for the 40 Nm end of the range to accommodate the plastic deformation of the adapter. If you position the adapter inline with the handle of your torque wrench you will effectively amplify your measurement and over-torque the lock ring (by how much depends on the length of your torque wrench and some math).
I printed in ASA, 0.6 nozzle, 0.3 layers, 6 walls, 12 top, 12 bottom, and 25% honeycomb infill which is almost certainly very excessive but it's a small part and I only wanted to wait for the chamber to preheat once. Worked perfectly with no tuning and no signs of damage or deformation to the adapter. PLA is probably fine with enough walls and top/bottom layers.










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