Build a gear bell

Explore the operation of the gears by building a crank door bell. You will discover the gear trains and their operation. You can then paint it and hang it on the door of your room. It is removable.

What will you learn?

  • More than 20 elements to assemble: you will handle screws, nuts, bolts, clamping rings, joins, gears, etc.
  • The difference between the pinion and the rack
  • Gear trains
  • The crank
  • The friction effect
  • The transmission of sound

DIY Doorbell