passpato
10 W
- Joined
- Jun 18, 2011
- Messages
- 89
I have overheated my old 33 amp 36v Heinzmann motor by over amping for too long. It is now shorting the controller.I have discovered that the max temp for the motor is 125 degrees C and that this is controlled in the genuine Heinzmann controller by the thermistor in the motor controlling the max amps from the controller. As the resistance in the thermistor rises with motor heat the current is reduced from the controller stopping the motor from over heating.
I have been using a 4qd controller that is way over the top. My upper limit has only been controlled by the Battery Management System at 40 amps. I have ordered another heinzmann motor. This one will be 25amps max. I can solder a resistor into the 4qd controller to control its max amps, in effect making it a lower wattage controller. i can not however use the Thermistor in parallel as its value is too low. I just want to know what others have got away with?
I used to wire the potentiometer throttle wire through the thermistor but by the time the thermistor gets a high enough resistance to block the signal it is way too hot.
I think I am going to have to get the genuine controller in time but how far past the 9 amp nominal can I go and for how long? I am a heavy man and have some long hills to climb.
If anyone has a genuine Heinzmann controller or even the cable would be usefull . I don't want to cut the new plug off my motor.
Also does anyone still convert Heinzmann controllers for use with a standard Ping battery without the half voltage curcuit in England or Uk.
Any help appreciated.
I have been using a 4qd controller that is way over the top. My upper limit has only been controlled by the Battery Management System at 40 amps. I have ordered another heinzmann motor. This one will be 25amps max. I can solder a resistor into the 4qd controller to control its max amps, in effect making it a lower wattage controller. i can not however use the Thermistor in parallel as its value is too low. I just want to know what others have got away with?
I used to wire the potentiometer throttle wire through the thermistor but by the time the thermistor gets a high enough resistance to block the signal it is way too hot.
I think I am going to have to get the genuine controller in time but how far past the 9 amp nominal can I go and for how long? I am a heavy man and have some long hills to climb.
If anyone has a genuine Heinzmann controller or even the cable would be usefull . I don't want to cut the new plug off my motor.
Also does anyone still convert Heinzmann controllers for use with a standard Ping battery without the half voltage curcuit in England or Uk.
Any help appreciated.