{
 "object": "alpha-v-twin-crank-disc",
 "license": "CC BY 4.0, Xem Studio",
 "les": "https://longearthsociety.com/engineering/",
 "files": [
  {
   "name": "alpha-crank-disc-s16",
   "step": "/files/hardware/alpha-v-twin-frame/alpha-crank-disc-s16.step",
   "stl": "/files/hardware/alpha-v-twin-frame/alpha-crank-disc-s16.stl",
   "note": "crank disc Ø26 × 6, Ø5 bore, Ø2.5 tap-drill hole for an M3 grub, ONE Ø3 pin at 8 mm (stroke 16): both con-rods share it"
  }
 ]
}