I had planned to build an e-go-kart. I have often seen people take a lot of cells from old laptops batteries. How much watt does my motor need so that I can go cat with 100kg weight and I can drive 50kmh? It would be important to me that I can limit the device to 25kmh because then it would be legal like an ebike?
Because then it would be legal like ebike?
No, it wouldn't be, since a four-wheeled motor vehicle is not a bicycle with pedal assistance.
I would recommend you take a starter motor from a car. These electric motors have enough power and rotation. You can feed them with a powerful 12v Lipo battery. Then you should have about 15 minutes of driving fun. Depending on how big you make the translation, it will run at 50-70kmh
