4 ms·

You'd need functional pedals, and for the electric push to be equal or lower than the human motive power.

Dylan16807 2y ago
> for the electric push to be equal or lower than the human motive power Is that the rule for normal ebikes? That's very restrictive!
- Danieru 2y ago
  In Japan, a bicycle with no functional pedals is called: a broken bicycle. A bike with a motor which propels itself is called: a motor bike. Japan has had bicycles with electric assist motors for 10+ years. They are popular with moms who need to carry kids but where a car is too cumbersome. Japan has also had motor bikes for a century. They are popular with lower class workers who want to skip traffic jams and commute cheaper. Japan is not confused by the shape of a motor bike. Making it look like luggage does not make it luggage (with a motor) but rather a luggage shaped motor bike. Japan appears to handle this Nominative determinism issue quite well.
  - Dylan16807 2y ago
    That's not my question. It's the part about the motor needing to be no stronger than the person. What if the motor puts in double what you pedal?
    - Danieru 2y ago
      That's not allowed. The motor cannot put in more energy than the pedeling does. Thus the motor can at best double your power.
- presentation 2y ago
  What really happens is people like my friend make their own ebike that is super powerful but looks like a normal bicycle, and while it is against the rules nobody ever questions it because it looks like a bicycle.
- numpad0 2y ago
  Looks like it was relaxed in 2008 to up to 200% of input at up to 10kph/6mph then taper to zero at 24kph/15mph, yeah it is kind of restrictive. I think equal power part is not too complicated to implement, with a load-bearing "just" you just sync synchronous motor driver to the rotor phase and limit current upstream. I believe a prototype also has to be brought to some office to get certified. Frankly it's all par for the course for a Japanese regulation; engineering cost is considered free and everything is supposed to be approved by someone official-ish.

> for the electric push to be equal or lower than the human motive power Is that the rule for normal ebikes? That's very restrictive!

Danieru 2y ago
In Japan, a bicycle with no functional pedals is called: a broken bicycle. A bike with a motor which propels itself is called: a motor bike. Japan has had bicycles with electric assist motors for 10+ years. They are popular with moms who need to carry kids but where a car is too cumbersome. Japan has also had motor bikes for a century. They are popular with lower class workers who want to skip traffic jams and commute cheaper. Japan is not confused by the shape of a motor bike. Making it look like luggage does not make it luggage (with a motor) but rather a luggage shaped motor bike. Japan appears to handle this Nominative determinism issue quite well.
- Dylan16807 2y ago
  That's not my question. It's the part about the motor needing to be no stronger than the person. What if the motor puts in double what you pedal?
  - Danieru 2y ago
    That's not allowed. The motor cannot put in more energy than the pedeling does. Thus the motor can at best double your power.
presentation 2y ago
What really happens is people like my friend make their own ebike that is super powerful but looks like a normal bicycle, and while it is against the rules nobody ever questions it because it looks like a bicycle.
numpad0 2y ago
Looks like it was relaxed in 2008 to up to 200% of input at up to 10kph/6mph then taper to zero at 24kph/15mph, yeah it is kind of restrictive. I think equal power part is not too complicated to implement, with a load-bearing "just" you just sync synchronous motor driver to the rotor phase and limit current upstream. I believe a prototype also has to be brought to some office to get certified. Frankly it's all par for the course for a Japanese regulation; engineering cost is considered free and everything is supposed to be approved by someone official-ish.