Help! E-scooter battery and controller to an eBike front hub motor

ill.taner

Just Joined
Jun 14, 2025
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I dismantled my eScooter and connected it to a 20in front hub motor ebike wheel..
Ive gone through the 36 hall and pahse combinations to find 3 work..
But the 3 that all work needs the ebike wheel to be spun in the opposite direction for the throttle to work in the correct riding direction.
The controller writes 36v @250 which is what the wheel is also.

Any help and any ideas what to check or buy to make this work?
Im using the throttle, brakes and screen batter and controller from the scooter
Megawheels m scooter s10 7.5ah

20in wheel is zinc ebike front motor hub
 

saneagle

Esteemed Pedelecer
Oct 10, 2010
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Telford
I dismantled my eScooter and connected it to a 20in front hub motor ebike wheel..
Ive gone through the 36 hall and pahse combinations to find 3 work..
But the 3 that all work needs the ebike wheel to be spun in the opposite direction for the throttle to work in the correct riding direction.
The controller writes 36v @250 which is what the wheel is also.

Any help and any ideas what to check or buy to make this work?
Im using the throttle, brakes and screen batter and controller from the scooter
Megawheels m scooter s10 7.5ah

20in wheel is zinc ebike front motor hub
There should be 3 combinations that give the correct forward motion and 3 that give smooth reverse direction.
 

ill.taner

Just Joined
Jun 14, 2025
4
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There should be 3 combinations that give the correct forward motion and 3 that give smooth reverse direction.
Thats what i was expecting also.. but only got 3 out of the 36 combinations. All 3 needed the wheel to be spun in the opposite direction to react with the throttle in the correct direction
 

matthewslack

Esteemed Pedelecer
Nov 26, 2021
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When you say spun, do you mean the throttle only works if the wheel is already rotating? If this was a normal bike system, that would suggest that it only works if the PAS is giving a signal, and that the PAS only gives a signal for the wrong direction of rotation.

So does your scooter system have the equivalent of a PAS sensor, and is it set up correctly?
 

Sturmey

Esteemed Pedelecer
Jan 26, 2018
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I came across (I think) something like what you describe with a Himo C20 ebike. The bike is fitted with a 20 inch direct drive motor and must be travelling at least 6 km/hr before the throttle becomes active. The signal comes from the motor hall sensors as the white wire that normally goes to a wheel speed sensor is not connected as its a direct drive motor. (I had the motor opened). I could see that the system would not work ( and the problem that you describe) if say you were to replace the direct drive motor with a freewheeling geared motor as the motor will not spin when the bike is moving in the forward direction but will in the reverse.
Also, (if this is the case), the wheel will have to be spun at double the speed as you have replaced the 10 inch wheel with a 20 inch wheel.
 
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saneagle

Esteemed Pedelecer
Oct 10, 2010
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Thats what i was expecting also.. but only got 3 out of the 36 combinations. All 3 needed the wheel to be spun in the opposite direction to react with the throttle in the correct direction
Maybe it would be better if you explain exactly what you mean. Everybody is trying to guess.
 

ill.taner

Just Joined
Jun 14, 2025
4
0
When you say spun, do you mean the throttle only works if the wheel is already rotating? If this was a normal bike system, that would suggest that it only works if the PAS is giving a signal, and that the PAS only gives a signal for the wrong direction of rotation.

So does your scooter system have the equivalent of a PAS sensor, and is it set up correctly?
Im quite new to all this.
The scooter did need to be pushed before the throttle worked.

I forgot to mention that the wires from the ebike wheel had an extra white thin cable which i didnt know where to connect so left it unconnected.

All 3 phase wires and 5 hall wires are all connected. Except for this thin white cable from the wheel
 

Sturmey

Esteemed Pedelecer
Jan 26, 2018
717
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Im quite new to all this.
The scooter did need to be pushed before the throttle worked.

I forgot to mention that the wires from the ebike wheel had an extra white thin cable which i didnt know where to connect so left it unconnected.

All 3 phase wires and 5 hall wires are all connected. Except for this thin white cable from the wheel
The scooter instructions are a below.
"once the power is on it is safer to start riding with one foot on the deck and give a kick by other foot to speed up the scooter to 5km/h, then push accelerator and place the other foot on the deck, this is safer and more controlled than pulling off with two feet on the deck as you will have less control and stability with two feet on the deck"
.
This may potentially cause two problems if you use this control system for an e bike motor.
Firstly, when you change from a 10 inch to a 20 inch wheel, the bike will have to traveling at 10 km/hr for the throttle to become active'
The second problem is that I think the controller system (like the Himo) gets its speed signal from the motor turning. But if you fit a geared hub motor, it wont spin as there is an inbuilt clutch that acts as a freewheel, so the bike and wheel will move forward but the motor will not turn (so no speed signal) and the throttle wont be 'active'.
Perhaps if you post up a photo of the front motor?

 
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Sturmey

Esteemed Pedelecer
Jan 26, 2018
717
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I looked at your photo. The white speed wire is not connected (and I presume you cant find somewhere to connect to) as I think the controller setup is for the small direct drive (no internal clutch or gears) scooter motor. The motor above looks to be a geared hub motor. When fitted, If you spin it in the forward direction, it will spin freely as the motor is disengaged. If you try to spin it in the reverse direction, the wheel gets heavy and you can hear the internal motor spinning. It is possible (but perhaps not advisable) to modify/weld that motor so it behaves like a direct drive but I think you need a proper e bike controller kit for that 20 wheel. (Other might advise you here)
 
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saneagle

Esteemed Pedelecer
Oct 10, 2010
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Im quite new to all this.
The scooter did need to be pushed before the throttle worked.

I forgot to mention that the wires from the ebike wheel had an extra white thin cable which i didnt know where to connect so left it unconnected.

All 3 phase wires and 5 hall wires are all connected. Except for this thin white cable from the wheel
There's a setting in the LCD where you can change the throttle from scoot to start to normal twist and go. There's a Youtube video from a foreign guy, where it's all explained. He explains in both his own language and English, so don't be put off if he's not talking in English
TF-100 THROTTLE P-SETTINGS MOBER S10 ELECTRIC SCOOTER GUIDE [TAGALOG] EKSPH

The white wire is for the speed sensor, but the controller might not be able to use it because the previous motor was direct drive, so it can get the speed from the hall sensors.
 
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