{
 "object": "gamma-base-plate-and-beam",
 "license": "CC BY 4.0, Xem Studio",
 "les": "https://longearthsociety.com/engineering/",
 "files": [
  {
   "name": "base-plate-1.5in",
   "step": "/files/hardware/gamma-base-plate-and-beam/base-plate-1.5in.step",
   "stl": "/files/hardware/gamma-base-plate-and-beam/base-plate-1.5in.stl",
   "note": "base plate for a 1.5 in tri-clamp engine: spool bore, slotted crank-stand mounts, 4 \u00d7 M5 to 2020 extrusion, 6 thick"
  },
  {
   "name": "base-plate-2in",
   "step": "/files/hardware/gamma-base-plate-and-beam/base-plate-2in.step",
   "stl": "/files/hardware/gamma-base-plate-and-beam/base-plate-2in.stl",
   "note": "base plate for a 2 in tri-clamp engine: spool bore, slotted crank-stand mounts, 4 \u00d7 M5 to 2020 extrusion, 6 thick"
  },
  {
   "name": "base-plate-3in",
   "step": "/files/hardware/gamma-base-plate-and-beam/base-plate-3in.step",
   "stl": "/files/hardware/gamma-base-plate-and-beam/base-plate-3in.stl",
   "note": "base plate for a 3 in tri-clamp engine: spool bore, slotted crank-stand mounts, 4 \u00d7 M5 to 2020 extrusion, 6 thick"
  },
  {
   "name": "rocker-beam-60",
   "step": "/files/hardware/gamma-base-plate-and-beam/rocker-beam-60.step",
   "stl": "/files/hardware/gamma-base-plate-and-beam/rocker-beam-60.stl",
   "note": "rocker beam 60 mm, centre pivot on a 623, \u00d83.2 ends (beam-driven displacer)"
  },
  {
   "name": "rocker-beam-80",
   "step": "/files/hardware/gamma-base-plate-and-beam/rocker-beam-80.step",
   "stl": "/files/hardware/gamma-base-plate-and-beam/rocker-beam-80.stl",
   "note": "rocker beam 80 mm, centre pivot on a 623, \u00d83.2 ends (beam-driven displacer)"
  },
  {
   "name": "rocker-beam-100",
   "step": "/files/hardware/gamma-base-plate-and-beam/rocker-beam-100.step",
   "stl": "/files/hardware/gamma-base-plate-and-beam/rocker-beam-100.stl",
   "note": "rocker beam 100 mm, centre pivot on a 623, \u00d83.2 ends (beam-driven displacer)"
  },
  {
   "name": "pivot-post-60",
   "step": "/files/hardware/gamma-base-plate-and-beam/pivot-post-60.step",
   "stl": "/files/hardware/gamma-base-plate-and-beam/pivot-post-60.stl",
   "note": "beam pivot post 60 mm, \u00d83 pin, 2 \u00d7 M3 foot"
  }
 ]
}