Torque measuring lever with bearing pivot

thingiverse

Remix of A_R_B's torque measuring arm which has a pivot that can be attached to a board, utilizing a 6903 30x17x7 cartridge bearing for the pivot. Designed with a size that works perfectly with a Park Tools DS-2 digital scale, 26mm high. The plan involves mounting the pivot to a board and positioning the scale to the right with the pointer in the center of the tray. Then, turning a 13mm socket on the hex will allow for reading the breakaway force. Additionally, I adjusted the length of the arm slightly - A_R_B's version is 200mm which is based on the conversion 1kgf = 10N. While that's close and more than accurate enough for this setup, mine is sized to 204.1mm based on 1kgf = 9.8 N. In practice, you won't see that level of accuracy but I still chose to do it anyway. Designed with the 6903 bearing in mind as that's what I had available that would clear the 13mm hex. Fusion 360 files included if you have a different bearing on hand.