{
 "object": "crank-webs-5mm-bore",
 "license": "CC BY 4.0, Xem Studio",
 "les": "https://longearthsociety.com/engineering/",
 "files": [
  {
   "name": "crank-web-stroke10",
   "step": "/files/hardware/counterweighted-cranks/crank-web-stroke10.step",
   "stl": "/files/hardware/counterweighted-cranks/crank-web-stroke10.stl",
   "note": "crank web (bar crank) 10 mm stroke, Ø5 bore with set-screw hub, Ø3 pin; two make a full crankshaft throw"
  },
  {
   "name": "crank-web-stroke15",
   "step": "/files/hardware/counterweighted-cranks/crank-web-stroke15.step",
   "stl": "/files/hardware/counterweighted-cranks/crank-web-stroke15.stl",
   "note": "crank web (bar crank) 15 mm stroke, Ø5 bore with set-screw hub, Ø3 pin; two make a full crankshaft throw"
  },
  {
   "name": "crank-web-stroke20",
   "step": "/files/hardware/counterweighted-cranks/crank-web-stroke20.step",
   "stl": "/files/hardware/counterweighted-cranks/crank-web-stroke20.stl",
   "note": "crank web (bar crank) 20 mm stroke, Ø5 bore with set-screw hub, Ø3 pin; two make a full crankshaft throw"
  },
  {
   "name": "crank-web-stroke25",
   "step": "/files/hardware/counterweighted-cranks/crank-web-stroke25.step",
   "stl": "/files/hardware/counterweighted-cranks/crank-web-stroke25.stl",
   "note": "crank web (bar crank) 25 mm stroke, Ø5 bore with set-screw hub, Ø3 pin; two make a full crankshaft throw"
  },
  {
   "name": "crank-web-stroke30",
   "step": "/files/hardware/counterweighted-cranks/crank-web-stroke30.step",
   "stl": "/files/hardware/counterweighted-cranks/crank-web-stroke30.stl",
   "note": "crank web (bar crank) 30 mm stroke, Ø5 bore with set-screw hub, Ø3 pin; two make a full crankshaft throw"
  }
 ]
}