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Jansen 100 mm Upper Link
Upper link j for the 'NEMA17 Twin-Motor Strandbeest Walker' kit (print ×4). It joins crank pin M to rocker vertex J. The two 4.5 mm M4 pivot bores are exactly 100.0 mm apart, centre to centre. Each sits in a 16 mm OD × 6 mm hub, and the flat-bottomed 14 × 5.5 mm bar is 116 mm long overall, with a 1 mm lightening groove along the top. It runs on M4x35 (M) and M4x25/M4x30 (J) socket head pins with washers and nylocks.
🧩 Part of the NEMA17 Twin-Motor Strandbeest Walker (link j joining crank pin M to rocker vertex J) kit.
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