Build a Hand Crank Doorbell by Koa Koa

Koa Koa
This DIY kit will allow you to build a superb doorbell for the door of your room.

In stock

SKU
27536
  £29.95
Description

This DIY kit will allow you to build a superb doorbell for the door of your room. You will discover, by building it, gear trains and basic mechanical principles such as friction effect. You will manipulate a lot of material: nuts, screws, washer, joins, tightening rings, and even elastic. Each step of the assembly is very well explained in the brochure.

You will discover that there are a lot of kinds of gears and they are very present in the objects that surround us.

How it works?

Start by detaching the gears of wooden planks, then identifies all small parts and hardware. Once mounted, you can paint it to customize it and nail it at the door of your room (there are 4 holes on the sides for that purpose). Then, more question of getting back without ringing!

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

What's in the kit?

You will find wooden elements: three large wooden gears, a large board and small pieces to assemble. There are also screws: nuts, screws, rings, washers, ears nuts, elastic band and bike bell.

Details
Product Code: KK001
Dimensions: Box 27 x 18 x 5cm
Bar Code: 3770008912090
Brand Koa Koa
Suitable From: 6+ years
Delivery

 

UK Mainland Delivery

  • Standard Delivery (Estimated Delivery 3 working days) from £2.99 or FREE when you spend £50 or more
  • Premium Delivery (Estimated Delivery 2 working days) from £3.49

Royal Mail delivery speed exclusions for Standard & Premium Deliveries

Royal Mail have advised that the following postcodes are excluded from their estimated delivery time: AB30-35, AB41-45, AB51-53, DD8-10, DG7-9, FK8, FK15-17, PH10-11, PH13-14, PH 17-18, TD15.

Channel Islands, Northern Ireland, Isle of Man, Scottish Highlands & Islands Delivery

  • Standard Delivery (Estimated Delivery 4 working days) from £2.99 or FREE when you spend £50 or more
  • Premium Delivery (Estimated Delivery 3 working days) from £3.49

Postcodes include BT, HS, KW, PA20, PA28-PA38, PA41-PA49, PA60-PA78, PA80, PH30, PH41-44, TR21-25, ZE, JE, GY, IM, KA27, KW16-17, PH42, PH44.

 

Oversized parcels are not included in the free delivery offer.

Norwich Click & Collect

  • FREE Click & Collect is available from our Norwich store

Order Monday to Friday and collect from our Norwich Store on the next working day

 

All dates are subject to change due to weather conditions and other reasons beyond our control.