{
 "object": "two-pin-crank-disc-90",
 "license": "CC BY 4.0, Xem Studio",
 "les": "https://longearthsociety.com/engineering/",
 "files": [
  {
   "name": "crank-disc-2pin-90deg-e6",
   "step": "/files/hardware/alpha-twin-crank-90/crank-disc-2pin-90deg-e6.step",
   "stl": "/files/hardware/alpha-twin-crank-90/crank-disc-2pin-90deg-e6.stl",
   "note": "crank disc with two Ø3 pin holes 90° apart at 6 mm (stroke 12): for PARALLEL alpha cylinders (not a 90° V, which uses one pin)"
  },
  {
   "name": "crank-disc-2pin-90deg-e8",
   "step": "/files/hardware/alpha-twin-crank-90/crank-disc-2pin-90deg-e8.step",
   "stl": "/files/hardware/alpha-twin-crank-90/crank-disc-2pin-90deg-e8.stl",
   "note": "crank disc with two Ø3 pin holes 90° apart at 8 mm (stroke 16): for PARALLEL alpha cylinders (not a 90° V, which uses one pin)"
  },
  {
   "name": "crank-disc-2pin-90deg-e10",
   "step": "/files/hardware/alpha-twin-crank-90/crank-disc-2pin-90deg-e10.step",
   "stl": "/files/hardware/alpha-twin-crank-90/crank-disc-2pin-90deg-e10.stl",
   "note": "crank disc with two Ø3 pin holes 90° apart at 10 mm (stroke 20): for PARALLEL alpha cylinders (not a 90° V, which uses one pin)"
  }
 ]
}