SiiXFX said:
So with this "setup" you described you can only drive 25km/h once the button is pushed (on position)?
And if you press the button again (off position) you can only drive 25km/h too?
Or do you mean, when you press the button (display off) = no limit
and when you press it again (display on) = 25km/h limit
Because when he pressed the button once, than it doesn't matter if the display is on or not. He still had a 25km/h limit.
Keep in mind that I'm guessing based solely on what you tell me about the system, since I have no way of knowing what his system (or yours) actually do, or what happens in the video except for what you tell me.
That said, what happens when the switch is changed depends on how the controller and LCD work.
If the controller depends on the LCD to do the limiting, then with the LCD off, no limiting will happen.
If all the LCD does is tell the controller what it's own limits are, then the controller does everything and the LCD just displays what the controller tells it to, and the LCD with it's built-in buttons tells the controller what settings you've changed, and the controller rmemebers those whether or not hte LCD is there.
Basically the only connection between LCD and controller in the KT series is Battery Postive and NEgative, provided by the controller to the LCD all the time the bike is on. THen there is a return battery postiive wire provided by the LCD to the controller, used by the LCD to switch the controller fully on whenever you use the LCD's built-in power button. Then there's two wires used by LCD and controller to send data back and forth, which can include the LCD telling the controller what it's limited to, and the controller telling th LCD what to display.
Theres' a lot of threads about the KT (kunteng kun teng) controllers and LCDs, if you want to look around the forum for them; maybe one of them has more info that is specific to your problem.
There is one more thing you can switch on or off that will disable any speed limits: The system has a speed sensor, and if that isn't connected, then the controller has no idea what speed it is at, so it can't limit it.
If the speed sensor is a separate sensor on the frame driven by a magnet on the spokes, then it's really easy to disable--just put the switch in series with either wire from the sensor.
If the speed sensor is in the motor, and has a separate wire for that, put the switch in that.
If the speed sensor is in the motor and uses one of the hall sensor wires for it, then unless your controller can run sensorless, then you can't switch this one off. The controller needs it to know how to spin the motor.
The catch with any of these is that the system may have a timer in it that if it doesn't get a speed signal within a few minutes, it powers off the bike thinking it's not being used. There may be a setting in the LCD to turn that off on some of them; you'd have to check the manual for yours to see.
But as long as you turn the switch back on to enable the speed sensor every so often, before it shuts the system off, then turn it back off again, it'd reset the timer.