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  1. dwkayaks

    Motor Burn Up at 32AMAX

    Ahoy Guys , T Y all , for your very informative replies , so just following up ,,, Grin found the throttle had a fault and is exchanging it , phew ! As for that eZee 250 RC that I THOUGHT I had burned up , not so ! I opened the motor and didn't get that burned motor smell , but...
  2. dwkayaks

    Causing Oscillations ?

    Ahoy Dan , T Y for your reply and good advice . The smaller controller is 36v , 25A , with LVC set at 27v and this one worked fine for a year until I cooked the 250W motor . Full Charge is 41.6v . I wouldn't know if these Grinfineon controllers are externally programmed , unless using...
  3. dwkayaks

    Causing Oscillations ?

    Hi Dan , T Y for your reply . I really thought that swapping out original equipment for new Grin equipment would solve my ebike problems , but alas this hasn't proved to be true . I have two Grin controllers , both 36V a 4825 and a 4835 and swapped them both , but they both did this...
  4. dwkayaks

    Causing Oscillations ?

    Gee , does any one have recent experience setting up , Advance settings on a CADP V2.3 . Will the default settings work to operate the motor smoothly , or not ? In the Grin CA V2.3 User Manual it mentions on page 16 item 8.8 "IntSGain" ,,, "at the risk of causing oscillations" ? So my new...
  5. dwkayaks

    Motor Burn Up at 32AMAX

    Ahoy All , When installing a new T-HTwist_Slim-Long throttle from Grin , upon plugging into the controller , the wheel (off the ground) starts turning at about 1/4 speed and the Grinfineon 4835 LED fault lite starts blinking 6 flashes an "Over Voltage" warning comes on . :confused: The...
  6. dwkayaks

    Motor Burn Up at 32AMAX

    Ahoy Bill, ( " Increasing voltage brings the current right back up. So it's accurate to say "more input voltage = more current = more heating.") Interesting , this statement of yours ! I assume that the opposite is true ,,, Less input voltage = Less current = Less heating ? My wife tells...
  7. dwkayaks

    Motor Burn Up at 32AMAX

    To Amberwolf and Neptronics ,,, A Big T Y for both of your replies , gee , would I like to have coffee and a chat with you guys ! Neptronics , I too get that "Stuttering" ,,,, the eZee motor will turn slowly, but when I advance the throttle just a little, that stuttering starts . What I...
  8. dwkayaks

    Motor Burn Up at 32AMAX

    Ahoy Dogman Dan , T Y for this reply . Yes, I was towing my Aosom trailer with a load of groceries up a short "motor killer" hill , topping out a 1.5 mile , 200' elevation gain . This was the second motor I have burned out the stator coils , Ouch ! I guess that now I need to learn coil...
  9. dwkayaks

    Motor Burn Up at 32AMAX

    Ahoy All , newbe here with a Question ,,, What amount of electrical current and for how long , would burn up the stator coils in a eZee 250 RC geared hub motor ? My CA registered 32AMAX before the motor died under load . BTW what does a motor with burned up stator coils sound like using the...
  10. dwkayaks

    Motor Burn Up at 32AMAX

    Ahoy All , Justin advised to check the geared hub motor as well as the wireing and connections ,,,, Well , the problem I found was 3 burnt coils in the stator , shame on me for using more energy from my motor than it could provide , Ouch !
  11. dwkayaks

    Motor Burn Up at 32AMAX

    Thanks neptronics and dustNbone for your replies . Also Thanks to amberwolf too ,,,, BTW , I did the tests you recommended , but no joy . Upon re-reading the Grinfineon Controller Manual , on page 11 , #3 Core Features and 3.1 LED Indicator , a list of controller fault problems shows that by...
  12. dwkayaks

    Motor Burn Up at 32AMAX

    Ahoy All , newbe here with a trouble shooting problem . Grin equiped with CA 2.3, Grinfineon 48-25 , 6 ea LiGo's ,,, using sensorless mode . Riding using throttle only about 12 mph , flat ground , towing a light load in trailer , everything fine with full batt charge ,,,, then upon increasing...
  13. dwkayaks

    Grinfineon 4825 Faulty ?

    Ahoy dustNbone , Gee, T Y for your reply and opening my mind to the possibility of " bouncing off the low voltage protection on the controller " . Sure wish I had a trouble shooting check list to follow , drats !
  14. dwkayaks

    Grinfineon 4825 Faulty ?

    :roll: Ahoy All , my entry level inexpensive Chinese ebike is having a problem (one of many) . I was riding and pulling a heavy load in my bike trailer, then during an up hill climb the geared hub motor started chattering with a reduction of speed and power to 4 - 5 mph . I have been v happy...
  15. dwkayaks

    How Many Poles

    Thank You again Teklektic , the reason I want to un-plug the Hall connector is that when I plug it into the motor Hall connector , the motor just shutters and barely turns the wheel when I advance the throttle . When un-plugged the motor works fine , except on start-up when a loud clunk is...
  16. dwkayaks

    How Many Poles

    Gee Teklektic , a Big T Y for your reply ,,, thinking your advice in quotes below , should be included in the CA V2.3 User Manual as this would have saved me time, money, and frustration . "Most geared motors have a built-in freewheel clutch making accurate speed/distance measurement from the...
  17. dwkayaks

    How Many Poles

    Just installing a Cycle Analyst and Grinfineon Controller up-grade . The CA set-up requires an entry for the number of poles that are in my 250W 36V geared hub motor. Grin's Cycle Analyst V2.4 Quick Start Guide page 6 , suggests that I can figure out how many poles my geared hub motor has " by...
  18. dwkayaks

    Controller Info Needed

    Gee, a big T Y for your reply Dogman Dan . After watching that Utube vid of Court Rye's Deep Dive interview with Justin , I am inclined to think of Justin at Grin Tech as a electrical engineer Guru for Ebikes , and thus not approachable by newbies with grammar school questions or problems like...
  19. dwkayaks

    Controller Info Needed

    Ahoy All , My entry level Ebike has lost motor control . This problem started when I connected a new LiGo 36v 2.7 AH battery to boost my ebike range . I started with multimeter test checks and didn't find any obvious problems . The throttle had its 36v and 4v going to it from the controller...
  20. dwkayaks

    Size Difference 250w vs 500w geared hub motor

    Will a 500W geared hub motor fit in the cavity of a 250W geared hub motor on a "Mag" type 26" aluminum wheel ? Would a 250W geared hub motor pull a Ebike trailer , or would a 500W motor be needed ? Would Grin Tech have a conversion kit 250W to 500W geared hub motor ? :?:
  21. dwkayaks

    350w vs 500w geared hub motor

    Is there a dimensional size difference between a 250W , a 350W , or a 500W geared Hub Motor ? The Ebike has an aluminum "Mag" type wheel with solid spokes , and a machined out hub to fit the 250W geared hub motor . Would this wheel hub accommodate a larger Watt geared hub motor ? If a...
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