{
 "object": "rhombic-drive-kit",
 "license": "CC BY 4.0, Xem Studio",
 "les": "https://longearthsociety.com/engineering/",
 "files": [
  {
   "name": "crank-gear-30t-e8-left",
   "step": "/files/hardware/rhombic-drive-kit/crank-gear-30t-e8-left.step",
   "stl": "/files/hardware/rhombic-drive-kit/crank-gear-30t-e8-left.stl",
   "note": "crank gear 30 T module 1, \u00d85 bore hub, \u00d83 crank pin at 8.0 mm (stroke 16.0); left (identical; mesh them 180\u00b0 apart)"
  },
  {
   "name": "crank-gear-30t-e8-right",
   "step": "/files/hardware/rhombic-drive-kit/crank-gear-30t-e8-right.step",
   "stl": "/files/hardware/rhombic-drive-kit/crank-gear-30t-e8-right.stl",
   "note": "crank gear 30 T module 1, \u00d85 bore hub, \u00d83 crank pin at 8.0 mm (stroke 16.0); right (identical; mesh them 180\u00b0 apart)"
  },
  {
   "name": "link-40-1",
   "step": "/files/hardware/rhombic-drive-kit/link-40-1.step",
   "stl": "/files/hardware/rhombic-drive-kit/link-40-1.stl",
   "note": "rhombic link 40.0 mm centres, \u00d83.2 pivots (4 needed)"
  },
  {
   "name": "link-40-2",
   "step": "/files/hardware/rhombic-drive-kit/link-40-2.step",
   "stl": "/files/hardware/rhombic-drive-kit/link-40-2.stl",
   "note": "rhombic link 40.0 mm centres, \u00d83.2 pivots (4 needed)"
  },
  {
   "name": "link-40-3",
   "step": "/files/hardware/rhombic-drive-kit/link-40-3.step",
   "stl": "/files/hardware/rhombic-drive-kit/link-40-3.stl",
   "note": "rhombic link 40.0 mm centres, \u00d83.2 pivots (4 needed)"
  },
  {
   "name": "link-40-4",
   "step": "/files/hardware/rhombic-drive-kit/link-40-4.step",
   "stl": "/files/hardware/rhombic-drive-kit/link-40-4.stl",
   "note": "rhombic link 40.0 mm centres, \u00d83.2 pivots (4 needed)"
  },
  {
   "name": "yoke-upper-displacer",
   "step": "/files/hardware/rhombic-drive-kit/yoke-upper-displacer.step",
   "stl": "/files/hardware/rhombic-drive-kit/yoke-upper-displacer.stl",
   "note": "upper yoke (displacer rod \u00d83) span 32 mm pivots"
  },
  {
   "name": "yoke-lower-piston",
   "step": "/files/hardware/rhombic-drive-kit/yoke-lower-piston.step",
   "stl": "/files/hardware/rhombic-drive-kit/yoke-lower-piston.stl",
   "note": "lower yoke (piston on a \u00d85 tube rod, displacer \u00d83 rod passes through) span 32"
  },
  {
   "name": "gear-frame-plate-c32",
   "step": "/files/hardware/rhombic-drive-kit/gear-frame-plate-c32.step",
   "stl": "/files/hardware/rhombic-drive-kit/gear-frame-plate-c32.stl",
   "note": "frame plate with \u00d816.2 pockets for 625 bearings (\u00d85 gear shafts) on 32 mm centres, a \u00d816 rod clearance and 2 \u00d7 M3 mounting holes at (\u00b120, \u221215) for the rhombic frame head (print two)"
  },
  {
   "name": "crank-pin-3x14",
   "step": "/files/hardware/rhombic-drive-kit/crank-pin-3x14.step",
   "stl": "/files/hardware/rhombic-drive-kit/crank-pin-3x14.stl",
   "note": "\u00d83 \u00d7 14 crank pin (dowel) for the gears"
  }
 ]
}