Build a Crank Operated Doorbell
Make a hand operated doorbell and discover how gears work.
This kit contains everything you need to build a crank operated doorbell and discover gear trains and basic mechanical principles such as friction effect.
How does it work?
Start by detaching the gears of wooden planks, then identify all small parts and hardware. Once mounted, you can use paint to customise the doorbell and then attach it to the door of your bedroom.
What will you learn?
- The different types of gears: gear trains, rack, pinion, circular, etc.
- The ratios to calculate the speed at which the gears are turning
- The effect of friction, the crank
Details and Dimensions
About Koa Koa
What's inside the kit?
- wooden elements: three large wooden gears, a large board and small pieces to assemble
- screws
- nuts
- rings
- washers
- ears nuts
- elastic
- bike bell
- illustrated booklet with all the assembly steps
- Pedagogical content on the theme
No tools needed.
Recommended Age 6+
Dimensions: 27 x 18 x 5 cm
Weight: 450g
£29.00 Regular Price
£23.20Sale Price
Only 1 left in stock
