Help! Samebike Throttle & Speedometer issue

[Onigorom]

Hi,
I ve got a Samebike 20LVXD30.
LCD is OK, the speedometer stopped working with the effect that the motor cannot be engaged.
Additionally, the throttle (or how you call this thing on the right handle that you turn to speed up) is not working either. Curiously, the speedometer works if I move the bike backwards.

Should I replace the controller, speed sensor?
While controllers are easy to find, I don t know where to get another speed sensor.

Any hints welcome!
Cheers!

Zoran

 

[Andy-Mat]

Hi,
I ve got a Samebike 20LVXD30.
LCD is OK, the speedometer stopped working with the effect that the motor cannot be engaged.
Additionally, the throttle (or how you call this thing on the right handle that you turn to speed up) is not working either. Curiously, the speedometer works if I move the bike backwards.

Should I replace the controller, speed sensor?
While controllers are easy to find, I don t know where to get another speed sensor.

Any hints welcome!
Cheers!

Zoran

Could be a wiring fault, count how many wires go to the motor and check all connections fully.
It may be a Hall effect problem, assuming you have more than 3 wires going to the motor....The thin wires are for the hall effect sensors.
Make sure all connectors have no corrosion and are fully mated.
It could even be a defective sensor.
A cheap bike tester (ebay around 10 UK Pounds) may help in identifying the problem, if you are not an electrical DIYer...... See here and watch as many as you can to get a better idea:-

https://www.youtube.com/results?search_query=e-bike+electronic+tester

Warning, not all testers will fit all bike electrics, so adding some test clips instead may assist you further. Not a big deal.....
Best wishes.
regards
Andy

 

[FKUA]

Hey,

I think that Samebike 20LVXD30 does not have speed sensor.
The display brown wire is to be connected to the yelow hall coming from the motor