Recent content by garman1987

Hi, can someone help me? After trying a classical 36v 250w controller on the bbs02 750w 48v motor, i have found several problems: -Controller gets hot quickly without load -Motor makes a strange vibration when turning on the throttle at 100% -General speed is too low in my opinion, even...

Hi and thanks for your offer. But picked up from the older circuit, desoldered all 9 fets from the new circuit (5 were shorted and 4 good) , and resoldered with 4 good from the other circuit. All looked ok .. but .. INCREDIBLE .. after few whistles , motor never turned, nothing gone short but 1...

After research I'm going to replace the FETs blown . 5 FETs . 3 on the green phase , 1 on the yellow one, 1 on the blue one. I will take 3 genuine FETs from another BBS02 controller (FET plate: P75NF75) and the other 2 bought on an electronical stuff shop (FET plate: P80NF10) . These one can...

yes .. i did it.. no replies from 1st december!

hi, I've purchased a controller from em3ev, using Paypal. I've written an email but no answer from 1st december. Need contacting a staff member. Could anyone suggest me a different email address from emissions-free_worldwide (at) hotmail . com?

It was a 3-hour work .. seriously.. removing all the rubber cover with a narrow screwdriver. This work revealed his risks when i made a leverage with a bigger screwdriver in order to pull up the board. These movements have broken 2 resistors. And not only.. also 2 small components on the other...

Sorry.. can you explain how to remove that? I feel it blocked and I can't understand how to push it out

i will try to use the tin welder edge to melt that hard rubber.

how can you measure the internal resistance and the capacity? I have bought a new battery which has the identical printed capacity, chemistry and nominal voltage. Hope this improves the situation. Then i will keep the charger plugged for 3 days. Why needs so much time for balancing? I thought it...

ok .. the calibration process is easy.. just open the metal cover that hides the controller .. then connect the 2 open wires (pink and grey thin wires with connectors) one into the other, thus generatig a short circuit. then reclose the entire box, close the external parts, and try to switch on...

Sorry ac246.. i'm trying to push the circuit out from the motor case. I've seen 1 screw on the left and 1 screw on the right side.. but after unscrewing, it doesn't move from its position. And, in order to remove rubber i've used a small screwdriver.. your work looks far better than mine, how...

I opened the case when controller is covered by rubber. It took very much time eliminating the rubber and it's still a problem how to reach the FETs. I will contact the user eventually

Great ! That link really describes what I need to know! So I will do the same like user ac246 did for its system. He changed some faulty FETs after recognizing which faulty, ordering P75NF75

thanks.. i'll give you updates after trying what the link suggests!

I've recently changed a dead cell into Airwheel's battery pack. After having closed all its screws, gyroscope now seems not understanding how to do. If i mantain a 0 degrees inclination, it goes forward. If i incline it backwards, it goes forward. Seems to be mad! Has anyone experienced the same...