This video is a detailed account of the creator's journey in building a homemade electric bike. It begins with using a drone motor, then explores various motor setups, pulley ratios, and motor redesigns. The video discusses battery packs, spot welding, and balancing cells. The presenter shares recommendations for choosing motors and achieving the right motor-to-wheel ratio. Ultimately, the creator highlights the advantages of their custom-built electric bike but suggests that hub motors may be a more practical choice for most users due to their simplicity and availability.
1. The speaker is building a homemade electric bike from scratch [Source: Text].
2. The bike is powered by a large drone motor [Source: Text].
3. The project took the speaker three years to complete [Source: Text].
4. The bike was initially built with a cheap motor from Amazon, 3D printed mount, and a speed controller [Source: Text].
5. The speaker rewound the motor by hand due to an issue with the initial speed controller [Source: Text].
6. The speaker built a new setup with two motors attached to a bag rack above the rear wheel [Source: Text].
7. The speaker built a 44 volts 15 amp hour battery pack using lithium-ion cells [Source: Text].
8. The bike's top speed was around 34 miles per hour [Source: Text].
9. The speaker redesigned the motor mount and rear pulley to improve power and efficiency [Source: Text].
10. The speaker upgraded the motor to a larger 25% diameter motor with 42 magnets [Source: Text].
11. The speaker programmed an Arduino board to display important information on an LCD screen [Source: Text].
12. The speaker built a new battery pack using cells measured for capacity [Source: Text].
13. The speaker added a feature to convert the electric bike back to a regular bike by simply removing the battery and taking the belt off [Source: Text].
14. The speaker recommended choosing a motor with a size labeled as a four-digit number and a kv rating for an electric bike [Source: Text].
15. The speaker provided a formula to calculate the motor to wheel ratio, which should ideally be around 10 [Source: Text].