{
 "object": "motion-mechanisms",
 "license": "CC BY 4.0, Xem Studio",
 "les": "https://longearthsociety.com/engineering/",
 "files": [
  {
   "name": "scotch-yoke-20-yoke",
   "step": "/files/hardware/motion-mechanisms/scotch-yoke-20-yoke.step",
   "stl": "/files/hardware/motion-mechanisms/scotch-yoke-20-yoke.stl",
   "note": "Scotch yoke slider, 20 mm stroke, 10.4 mm slot for a 623 bearing on the crank pin, 8 mm rod with M3 end"
  },
  {
   "name": "scotch-yoke-20-crank",
   "step": "/files/hardware/motion-mechanisms/scotch-yoke-20-crank.step",
   "stl": "/files/hardware/motion-mechanisms/scotch-yoke-20-crank.stl",
   "note": "Scotch yoke crank disc, pin at 10 mm (20 stroke), \u00d85 bore"
  },
  {
   "name": "scotch-yoke-30-yoke",
   "step": "/files/hardware/motion-mechanisms/scotch-yoke-30-yoke.step",
   "stl": "/files/hardware/motion-mechanisms/scotch-yoke-30-yoke.stl",
   "note": "Scotch yoke slider, 30 mm stroke"
  },
  {
   "name": "scotch-yoke-30-crank",
   "step": "/files/hardware/motion-mechanisms/scotch-yoke-30-crank.step",
   "stl": "/files/hardware/motion-mechanisms/scotch-yoke-30-crank.stl",
   "note": "Scotch yoke crank disc, pin at 15 mm"
  },
  {
   "name": "swash-plate-40-10deg",
   "step": "/files/hardware/motion-mechanisms/swash-plate-40-10deg.step",
   "stl": "/files/hardware/motion-mechanisms/swash-plate-40-10deg.stl",
   "note": "swash (wobble) plate \u00d840, 10\u00b0 tilt \u2192 6.9 mm stroke at the rim, \u00d85 shaft, M3 set screw"
  },
  {
   "name": "swash-plate-40-15deg",
   "step": "/files/hardware/motion-mechanisms/swash-plate-40-15deg.step",
   "stl": "/files/hardware/motion-mechanisms/swash-plate-40-15deg.stl",
   "note": "swash (wobble) plate \u00d840, 15\u00b0 tilt \u2192 10.4 mm stroke at the rim, \u00d85 shaft, M3 set screw"
  },
  {
   "name": "swash-plate-40-20deg",
   "step": "/files/hardware/motion-mechanisms/swash-plate-40-20deg.step",
   "stl": "/files/hardware/motion-mechanisms/swash-plate-40-20deg.stl",
   "note": "swash (wobble) plate \u00d840, 20\u00b0 tilt \u2192 13.7 mm stroke at the rim, \u00d85 shaft, M3 set screw"
  },
  {
   "name": "swash-follower-8x30",
   "step": "/files/hardware/motion-mechanisms/swash-follower-8x30.step",
   "stl": "/files/hardware/motion-mechanisms/swash-follower-8x30.stl",
   "note": "swash follower: 8 mm square pushrod with a \u00d88 ball end, M3 tapped tail"
  },
  {
   "name": "eccentric-d30-e3",
   "step": "/files/hardware/motion-mechanisms/eccentric-d30-e3.step",
   "stl": "/files/hardware/motion-mechanisms/eccentric-d30-e3.stl",
   "note": "eccentric \u00d830, 3 mm offset (6 mm stroke), \u00d85 shaft, set screw"
  },
  {
   "name": "eccentric-d30-e5",
   "step": "/files/hardware/motion-mechanisms/eccentric-d30-e5.step",
   "stl": "/files/hardware/motion-mechanisms/eccentric-d30-e5.stl",
   "note": "eccentric \u00d830, 5 mm offset (10 mm stroke), \u00d85 shaft, set screw"
  },
  {
   "name": "eccentric-d30-e8",
   "step": "/files/hardware/motion-mechanisms/eccentric-d30-e8.step",
   "stl": "/files/hardware/motion-mechanisms/eccentric-d30-e8.stl",
   "note": "eccentric \u00d830, 8 mm offset (16 mm stroke), \u00d85 shaft, set screw"
  },
  {
   "name": "eccentric-strap-d30",
   "step": "/files/hardware/motion-mechanisms/eccentric-strap-d30.step",
   "stl": "/files/hardware/motion-mechanisms/eccentric-strap-d30.stl",
   "note": "eccentric strap for the \u00d830 eccentrics, split ring, 40 mm rod with M3 eye"
  },
  {
   "name": "geneva-4-wheel-r30",
   "step": "/files/hardware/motion-mechanisms/geneva-4-wheel-r30.step",
   "stl": "/files/hardware/motion-mechanisms/geneva-4-wheel-r30.stl",
   "note": "Geneva wheel, 4 stations, R30, 5.6 mm slots, \u00d85 bore"
  },
  {
   "name": "geneva-4-drive-r30",
   "step": "/files/hardware/motion-mechanisms/geneva-4-drive-r30.step",
   "stl": "/files/hardware/motion-mechanisms/geneva-4-drive-r30.stl",
   "note": "Geneva drive disc + arm + \u00d85 pin for the 4-station wheel (centre distance 42.4 mm)"
  },
  {
   "name": "geneva-6-wheel-r30",
   "step": "/files/hardware/motion-mechanisms/geneva-6-wheel-r30.step",
   "stl": "/files/hardware/motion-mechanisms/geneva-6-wheel-r30.stl",
   "note": "Geneva wheel, 6 stations, R30, 5.6 mm slots, \u00d85 bore"
  },
  {
   "name": "geneva-6-drive-r30",
   "step": "/files/hardware/motion-mechanisms/geneva-6-drive-r30.step",
   "stl": "/files/hardware/motion-mechanisms/geneva-6-drive-r30.stl",
   "note": "Geneva drive disc + arm + \u00d85 pin for the 6-station wheel (centre distance 34.6 mm)"
  },
  {
   "name": "link-20",
   "step": "/files/hardware/motion-mechanisms/link-20.step",
   "stl": "/files/hardware/motion-mechanisms/link-20.stl",
   "note": "four-bar / rocker link, 20 mm centres, \u00d83.2 holes, 10 wide \u00d7 5"
  },
  {
   "name": "link-30",
   "step": "/files/hardware/motion-mechanisms/link-30.step",
   "stl": "/files/hardware/motion-mechanisms/link-30.stl",
   "note": "four-bar / rocker link, 30 mm centres, \u00d83.2 holes, 10 wide \u00d7 5"
  },
  {
   "name": "link-40",
   "step": "/files/hardware/motion-mechanisms/link-40.step",
   "stl": "/files/hardware/motion-mechanisms/link-40.stl",
   "note": "four-bar / rocker link, 40 mm centres, \u00d83.2 holes, 10 wide \u00d7 5"
  },
  {
   "name": "link-50",
   "step": "/files/hardware/motion-mechanisms/link-50.step",
   "stl": "/files/hardware/motion-mechanisms/link-50.stl",
   "note": "four-bar / rocker link, 50 mm centres, \u00d83.2 holes, 10 wide \u00d7 5"
  },
  {
   "name": "link-60",
   "step": "/files/hardware/motion-mechanisms/link-60.step",
   "stl": "/files/hardware/motion-mechanisms/link-60.stl",
   "note": "four-bar / rocker link, 60 mm centres, \u00d83.2 holes, 10 wide \u00d7 5"
  },
  {
   "name": "link-80",
   "step": "/files/hardware/motion-mechanisms/link-80.step",
   "stl": "/files/hardware/motion-mechanisms/link-80.stl",
   "note": "four-bar / rocker link, 80 mm centres, \u00d83.2 holes, 10 wide \u00d7 5"
  },
  {
   "name": "link-100",
   "step": "/files/hardware/motion-mechanisms/link-100.step",
   "stl": "/files/hardware/motion-mechanisms/link-100.stl",
   "note": "four-bar / rocker link, 100 mm centres, \u00d83.2 holes, 10 wide \u00d7 5"
  },
  {
   "name": "bell-crank-30x30-90",
   "step": "/files/hardware/motion-mechanisms/bell-crank-30x30-90.step",
   "stl": "/files/hardware/motion-mechanisms/bell-crank-30x30-90.stl",
   "note": "bell crank 30 \u00d7 30 mm arms at 90\u00b0, \u00d810.2 pocket for a 623 bearing pivot, \u00d83.2 arm holes"
  },
  {
   "name": "bell-crank-20x40-90",
   "step": "/files/hardware/motion-mechanisms/bell-crank-20x40-90.step",
   "stl": "/files/hardware/motion-mechanisms/bell-crank-20x40-90.stl",
   "note": "bell crank 20 \u00d7 40 (2:1), 90\u00b0"
  },
  {
   "name": "rack-m1-100",
   "step": "/files/hardware/motion-mechanisms/rack-m1-100.step",
   "stl": "/files/hardware/motion-mechanisms/rack-m1-100.stl",
   "note": "rack, module 1, 100 mm, 8 high \u00d7 8 wide, three M3 mounting holes; meshes with the module 1 gears"
  },
  {
   "name": "rack-m2-150",
   "step": "/files/hardware/motion-mechanisms/rack-m2-150.step",
   "stl": "/files/hardware/motion-mechanisms/rack-m2-150.stl",
   "note": "rack, module 2, 150 mm"
  }
 ]
}