{
 "object": "linear-alternator-kit",
 "license": "CC BY 4.0, Xem Studio",
 "les": "https://longearthsociety.com/engineering/",
 "files": [
  {
   "name": "magnet-carrier-40-12x10x3",
   "step": "/files/hardware/linear-alternator-kit/magnet-carrier-40-12x10x3.step",
   "stl": "/files/hardware/linear-alternator-kit/magnet-carrier-40-12x10x3.stl",
   "note": "moving-magnet carrier: \u00d840 bore sleeve, 12 radially-magnetized \u00d810 \u00d7 3 discs in pockets around the OD (alternate poles), 20 long"
  },
  {
   "name": "magnet-carrier-30-8x10x3",
   "step": "/files/hardware/linear-alternator-kit/magnet-carrier-30-8x10x3.step",
   "stl": "/files/hardware/linear-alternator-kit/magnet-carrier-30-8x10x3.stl",
   "note": "moving-magnet carrier \u00d830 with 8 magnets"
  },
  {
   "name": "coil-annulus-50-70-12",
   "step": "/files/hardware/linear-alternator-kit/coil-annulus-50-70-12.step",
   "stl": "/files/hardware/linear-alternator-kit/coil-annulus-50-70-12.stl",
   "note": "stationary coil bobbin: ID 50, OD 70, 12 wide; ~300 turns 0.4 mm wire"
  },
  {
   "name": "coil-annulus-40-58-12",
   "step": "/files/hardware/linear-alternator-kit/coil-annulus-40-58-12.step",
   "stl": "/files/hardware/linear-alternator-kit/coil-annulus-40-58-12.stl",
   "note": "coil bobbin ID 40, OD 58, for the \u00d830 carrier"
  },
  {
   "name": "back-iron-ring-72-84",
   "step": "/files/hardware/linear-alternator-kit/back-iron-ring-72-84.step",
   "stl": "/files/hardware/linear-alternator-kit/back-iron-ring-72-84.stl",
   "note": "back-iron envelope (laminated or mild-steel ring) ID 72, OD 84, 30 long"
  },
  {
   "name": "back-iron-ring-60-72",
   "step": "/files/hardware/linear-alternator-kit/back-iron-ring-60-72.step",
   "stl": "/files/hardware/linear-alternator-kit/back-iron-ring-60-72.stl",
   "note": "back-iron envelope ID 60, OD 72"
  },
  {
   "name": "piston-rod-5x120-grooved",
   "step": "/files/hardware/linear-alternator-kit/piston-rod-5x120-grooved.step",
   "stl": "/files/hardware/linear-alternator-kit/piston-rod-5x120-grooved.stl",
   "note": "\u00d85 \u00d7 120 piston rod with two E-clip grooves for the flexure hubs"
  }
 ]
}