Help to find controller replacement

[ThomasV]

Hi there



I've had the problem that my old electric bike, a SCO Viper Electric. It’s about 8 years old and has stopped working. The bicycle mechanic has identified the problem as being the control box which has broken down.

I have tried to find a new one on the internet, but it is more or less impossible to get such a "simple" control box.

There is only one speed on it and then there is connection to these five elements on the bicycle.

1) Battery

2) Pedals

3) Main switch on bar

4) Brake sensor

5) Engine

I have tried myself with a "china box" where they promise that Hall sensor is not a necessity, but it does not work for me.

Does anyone know where I can get such a small control box? I think it's a real shame that my bike, which is old, but in really good condition on battery, engine and general condition general.

I attached a picture of it so you can see plugs, volts, amps, etc.

 

[ThomasV]

Hi. Thanks for your answer.
Yes, I still have the 24v battery. It is only a few years old and in good condition

 

[marcl312]

That Protanium setup looks very similar to my old Schwinn Continental electric.
The original battery was LiPo. I had mine refurbished by John Nethers in North Muskegon, MI. He is great. He used Samsung 18650 cells To pack 17.5 Ah instead of the original 10Ah.
I also replaced the 250w motor with a new one from Leeds. The bike has been working as good as new for over a year. I get somewhere between 30-40 miles of range. The motor has no hall sensors, just the 3 phase wires. There is a cheap banana connector for each wire. I found matching male ones at the hardware store.
I haven’t yet had any problem with the controller.

 

[harryS]

I believe he needs a sensorless motor controller. This one might work. I bought this from them six years ago. I was not paying attention and bought it, even though it was sensorless, but it still worked with my sensored bafang hub motor. Should work finr with a sensorless motor, He will need a display though.
.

S06P 250Watts Torque Simulation Square Wave Controller

S06P 250Watts Torque Simulation Square Wave Controller for 24Volts and 36Volts battery pack E-Bike System

bmsbattery.com

PSWpower also sells sensorless controllers. You can navigate their websites.

 

[ThomasV]

Hi every one,

Thank you very much for all your answers.

Yes, my bike is the one in the picture.

It's a very simple setup. The controller provides power to the engine when I use the pedals, it shuts off if I use the brakes or stop using the pedals in a few seconds.

There are four connections on the bike and then 24v to the controller. I have inserted in a picture below with the bikes connections.

Do you think I can use the S06P 250Watts torque simulation square wave controller?

 

[marcl312]

I believe he needs a sensorless motor controller. This one might work. I bought this from them six years ago. I was paying attention and bought it, even though it was sensorless, but it still worked with my sensored bafang hub motor. Should work finr with a sensorless motor, He will need a display though.
.

S06P 250Watts Torque Simulation Square Wave Controller

S06P 250Watts Torque Simulation Square Wave Controller for 24Volts and 36Volts battery pack E-Bike System

bmsbattery.com

PSWpower also sells sensorless controllers. You can navigate their websites.

That may very well be a very similar controller to the original one. On my Schwinn, there is a distinct 2-level power output: the motor starts slow and upon reaching about 5 mph switches to a higher power level.
Having to add a display is more of a benefit. I wish my bike had one instead of the very basic battery level and limited variable power level adjustment.

 

[marcl312]

Hi every one,

Thank you very much for all your answers.

Yes, my bike is the one in the picture.

It's a very simple setup. The controller provides power to the engine when I use the pedals, it shuts off if I use the brakes or stop using the pedals in a few seconds.

There are four connections on the bike and then 24v to the controller. I have inserted in a picture below with the bikes connections.

Do you think I can use the S06P 250Watts torque simulation square wave controller?

I would try It. When I swapped my motor, I was concerned about a potential problem with the phase angle because my bike was 12 years old. Today, common standards are more standard than back then. My concerns were unfounded It turned out.
You may have to play around with the different color combinations for the 3 wires going to the motor. There are only 6 so it is very easy to run through them to find the one that powers the wheel in the right direction smoothly.
I am looking forward to hearing how the switch works out, including how the new controller fits in the housing.

 

[harryS]

Re: Senseless Controllers.

Some motors don't have hall sensors. A sensorless controller looks at the current going thru its phase circuits to determine the position of the motor, You still need inputs to detect the pedal, brakes, or the throttle. You can use a sensorless controller to run a motor with or without hall sensors, but if you have a sensored controller, it only works with hall sensor motors.

As I wrote, I have one, and it would be a good debug tool for a repair shop. You can hook any motor to it, and it will work, Looking at the OP's photo, the lack of hall sensor wires from the controller tells me it's sensorless.

 

[ThomasV]

Thanks to everyone for your helpful answers. I just bought the controller and hope it can get my bike out and ride again.

You will hear from me in a couple of weeks when the controller has arrived here in Denmark and I have tried to connect it

Thomas