{
 "object": "ross-yoke-frame",
 "license": "CC BY 4.0, Xem Studio",
 "les": "https://longearthsociety.com/engineering/",
 "files": [
  {
   "name": "ross-frame-2x-10ml",
   "step": "/files/hardware/ross-yoke-kit/ross-frame-2x-10ml.step",
   "stl": "/files/hardware/ross-yoke-kit/ross-frame-2x-10ml.stl",
   "note": "Ross alpha frame: Ø5 shaft in two 625s, two 10 mL barrel sockets on parallel axes 2 × 20 = 40 mm apart (inner faces 63 mm above the crank axis), rocking-link post at (-40, 20), foot 2 × M5 at 50 mm for 2020"
  }
 ]
}