icecube57
10 MW
I posted a video. Before IT happened. This morning i got off work, I decided to go out on a 47m paved bike trail by my apartment. Its level for the the most part. Great for a speed and range test. Charged pack hovering at 67.5v. Went out pedaled up to my max limit.I twisted in the throttle got up to about 36 mph according to my gps unit and it began to taper off as it was raping the pack and the motor started heating up. When my speed crested at 36 the controller was pulling about 60A. As the battery was discharging the number got lower and lower and lower in relation to the SOC health of the pack. It bottomed out at about 15A that was when my battery pack just passed out. Voltage actually dropped down the the high 30s. NO LVC on controller. By that time i had finished my trial run anyways. Unassited range other than pedaling up to speed was 8-9 miles on flat terrain 100% throttle the whole time. I consumed 7.55AH before the pack flat lined. 675wh consumed peaked at 91A 4800w. When i finally pulled back up to my car and stopped. I saw smoke billowing from my axel. You know how you leave a car in the sun and you see the heat waves coming off the car. The motor looked the same exact way. Im missing 3 finger prints on my hands from checking the motor temp. After about 1hr the voltage came back up to 61.5 on my pack. The motor also kicked the bucket again. I think the the brush holder is warped or melted or broken. One of the brushes is still making contact cause you can hear that soft clicking noise when u spin the wheel. I cant get any continuity on my V meter on any wheel position. Which leads me to believe that one of the brushes isnt making contact. I dont have the patience to disassemble the motor today. Maybe saturday morning when i get off from work. will take high res pics. If i disassemble the motor and find that the brush holder is to blame im going to try and track down an original metal one if they still exist. Prob order some new brushes and try again. If its a more complicated problem like the windings have melted or shorted. Im going to discontinue this build and move on to over volting a currie or possibly go to a rear wheel X5. Really intrested in some type of currie set up. How far can i push those i wonder. Lol i still have a 60v 100A controller. I think my other 60v works at 48v 100A. Dare me to take on the challenge. Lived up to my signature and rode the BD-36 like a rental. To bad i didnt get the insurance. I wonder if i sent the motor back to WE what would they say lol.