{
 "object": "bolt-on-counterweights",
 "license": "CC BY 4.0, Xem Studio",
 "les": "https://longearthsociety.com/engineering/",
 "files": [
  {
   "name": "bolt-on-counterweight-r15",
   "step": "/files/hardware/counterweighted-cranks/bolt-on-counterweight-r15.step",
   "stl": "/files/hardware/counterweighted-cranks/bolt-on-counterweight-r15.stl",
   "note": "bolt-on counterweight arc, outer R15 / inner R7, 120°, 6 thick, 3 × M3 clearance (Ø3.2) at R11; add to any flywheel or disc opposite the pin"
  },
  {
   "name": "bolt-on-counterweight-r20",
   "step": "/files/hardware/counterweighted-cranks/bolt-on-counterweight-r20.step",
   "stl": "/files/hardware/counterweighted-cranks/bolt-on-counterweight-r20.stl",
   "note": "bolt-on counterweight arc, outer R20 / inner R12, 120°, 6 thick, 3 × M3 clearance (Ø3.2) at R16; add to any flywheel or disc opposite the pin"
  },
  {
   "name": "bolt-on-counterweight-r25",
   "step": "/files/hardware/counterweighted-cranks/bolt-on-counterweight-r25.step",
   "stl": "/files/hardware/counterweighted-cranks/bolt-on-counterweight-r25.stl",
   "note": "bolt-on counterweight arc, outer R25 / inner R17, 120°, 6 thick, 3 × M3 clearance (Ø3.2) at R21; add to any flywheel or disc opposite the pin"
  }
 ]
}