Advertise on Bikeforums.net



User Tag List

Results 1 to 8 of 8
  1. #1
    Senior Member
    Join Date
    Jul 2009
    Posts
    61
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    throttle control wires on controller.

    hi i have a 36v controller with red green and black x3 my question is how do i know witch set of three to use for the throttle ? have a meter for checking volts etc if that can determine anything. cheers crimsonsnake

  2. #2
    Senior Member CowtownPeddler's Avatar
    Join Date
    Feb 2010
    Location
    Calgary
    My Bikes
    Old Norco frame in conversion process
    Posts
    111
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    What controller? Make/model?

  3. #3
    Senior Member
    Join Date
    Jul 2009
    Posts
    61
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    i dont know what model its of a china ebike its small in size and is the brushless hall effect type. but no make or model no. thanks in advance.

  4. #4
    Senior Member CowtownPeddler's Avatar
    Join Date
    Feb 2010
    Location
    Calgary
    My Bikes
    Old Norco frame in conversion process
    Posts
    111
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Black is usually Gnd
    Red is usually +5v
    Green is usually throttle 0-5v

    Best of luck

  5. #5
    eBiker alfonsopilato's Avatar
    Join Date
    Jul 2008
    Location
    Toronto
    My Bikes
    CCM Moutain bike fitted with 408 Crystalyte motor, 48V 12 AH battery, 20 amp 48 v Crystalyte controller
    Posts
    152
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Some controllers have a fourth pin which is the battery's full voltage. make sure you identify that one.

    A multimeter could come in handy.

    in your case you are describing only three wires, so i would theorise that you only have a ground, +5v and the wiper which is 0 to 5v, just as CowTownPeddler mentioned.

    The way it works: the throttle receives a stead +5volts from the controller through one wire, that potential diference is realise by having a ground from the throttle to the controller. When you twist the throttle, a wiper moves across the resistor's length and modifies the resistance on the circuit and therefore returns a percentage of the +5volts back to the controller. The controller then interprets that range: 0volts as no power to the motor and +5 volts as maximum power. If you have a cycle analyst you can actually fine tune this range as not all controllers will give out exactly 5volts (you may read 4.5 volts as maximum .. but ususally it's around that valu of ~ 5 volts. )

    Here's how I know about this. While upgrading from a 48 to 72 volt setup, I blew my controller and the throttle and everything along that circuit. So, I got a new controller, but my throttle was dead, so had to improvise. So I went to the electronics shop and got me a variable resistor, comes in the form of a dial which has three pins.

    In my case , I had a fourth wire on my new controller, lucky me. One of those pins is the full voltage of the battery. MAKE SURE YOU IDENTIFY THAT ONE.
    * I made sure to stear clear of the one that had the full voltage across the battery.
    The voltages on those three other pins is quite small (provided you stear clear the above *). So I connected the throttle pins to those of the controller , and tried every combination amongst those three pins until it worked, (again making sure to stay away from the fourth pin on the controller). And it worked! In my case the controller's wires were not coded the same way as the throttle's.

    My controller is a digital one from crystalyte, high power 72 volts, 35amps.
    The colours on that one are : RED, ORANGE, YELLOW, WHITE. *White is the full battery voltage. I stayed away from that one.

    So in my case, i connected my throttle this way:

    THROTTLE --> CONTROLLER
    ------------- ----------------
    RED --> RED
    YELLOW --> ORANGE
    GREEN (wiper/throttle) --> YELLOW

    Hope that helps.

  6. #6
    Senior Member
    Join Date
    Jul 2009
    Posts
    61
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    hi many thanks for all advise will be looking into all this very soon. regards crimsonsnake

  7. #7
    Newbie
    Join Date
    Mar 2010
    Location
    under your chair
    Posts
    3
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by alfonsopilato View Post
    ... While upgrading from a 48 to 72 volt setup, I blew my controller and the throttle and everything along that circuit. ...
    What Ebike do u have? I want to add speed to my Hgregoire, and I don't want to destroy anything.

  8. #8
    eBiker alfonsopilato's Avatar
    Join Date
    Jul 2008
    Location
    Toronto
    My Bikes
    CCM Moutain bike fitted with 408 Crystalyte motor, 48V 12 AH battery, 20 amp 48 v Crystalyte controller
    Posts
    152
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    i have a $100 ccm mountain bike from walmart,now fitted with 5304 crystalyte motor
    i blew component when i upgraded from 48 to 72 volts but did not upgrade my controller.
    controller was rated for 48 volts. the key is to have the right controller for the battery setup.
    also,if you're putting batteries in series, you need to protect the bms of each battery with a diode,
    Last edited by alfonsopilato; 04-21-10 at 04:01 AM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •