How to upgrade a dc motor no rewinding || generate more power and speed

How to upgrade a dc motor no rewinding || generate more power and speed

in this video I well show how to upgrade dc motor speed without any rewinding

using matarial :
1. dc motor
2. magnet
3. 3.7 v battery
4. wire

Thanks for watching

[katrimon]

you can also take the inside and replace the copper wires with thicker copper wires