You might be interested in this:
https://youtu.be/oprWwrEmjmI
https://1drv.ms/u/s!AnrTeoVMhHXktSduwyBxEME-7Qgz?e=j3lRes
The 'negative rake angle' makes it so stable, it even works without handlebars:
https://youtu.be/5MQ7qDzfENo
.... or if you want suspension too:
https://youtu.be/ECzFlrXNry8
I made an in-line skateboard that used the same steering geometry. (actually quite a few)
https://youtu.be/5MQ7qDzfENo
I think that design of skateboard demonstrates the principle. It uses a combination of sort of negative rake angle and maybe an inch of trail. If I used a conventional rake...
E-scooter safety is on everyone’s mind. A recent OECD international transport forum concluded that e-scooters were no less safe than bicycles, but recommended manufacturers improve their stability by design. Scooters have a small wheel base and small wheels, so they’re small - which is why...