cream

cream

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  • B
    Subject: Magnetic ring request – Shimano E8000


    Hello,
    Thanks to your help, I replaced the 8 internal bearings on my E8000 motor.
    Unfortunately, the ring magnet near the torque sensor broke during disassembly.
    I glued it back with epoxy; the motor works but has a small jerk at startup.
    Could you sell me a replacement magnetic ring? I live in France.
    Best regards,

    Attachments

    • E8000_Vilebrequin et capteur de couple.jpg
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    vu huynh
    I have a locked battery and it shows 3 red lights when starting up. Can you help me? Thank you. I'm in Vietnam and can't go to your factory. thank you so much !

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    S
    Hello,
    I recently replaced all the cells in a Specialized Turbo Vado battery, not realizing that the BMS would lock when the batteries were disconnected. Can I send this BMS to you to be unlocked? Please email me at [email protected].

    Thanks, Seth

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    dawsel
    Hello,
    I saw your posts about specialized batteries. I have a problem with a DerbyCycle 170817059 battery. I found it also uses a renesas r5f2134. I found one cell group had dropped to 3,00V and one to 3,80V , while the others were around 4,07V. I tried manually balancing the battery with some success but I suspect the BMS has set a PF flag. Please contact me at [email protected].
    Best regards, Dawid

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    cream
    cream
    Hello,

    I've sent you an email.

    Regards,
    Mircea
    N
    Hi, I´m from Spain, i would need your help with a turbo levo gen1 battery, it works, health is 79% but it starts to cut off around 40% charge when using. pls contact me here or at [email protected], Thank you!
    cream
    cream
    Hi there. I've sent you an email but never got a reply.
    • Like
    Reactions: cimi74
    L
    Hello. I got a tip from you that you can revive BMS Yamaha, Dafron and other advanced bms systems. I would be interested in your work and offer cooperation. Please, you can contact me at email: [email protected]
    Thank Martin
    L
    Lapacenko
    Text correction..... DARFON battery
    B
    Hi. I m from Serbia. I need help with Specialized gen 1 battery.
    View previous comments…
    B
    Branko1
    Doesn't want to go on. when I opened it cells are ok, switch seems to be ok. it must be some other problem. Where about in Romania are you? Maybe I can just drive to you? coz I m not to far from the border.
    cream
    cream
    Hello. Our workshop is located in Bucharest.
    B
    Branko1
    That is ok. I m currently in South africa. I will be back in Serbia mid july. How can I contact you to arrange for me to come and bring you the battery for repair?
    M
    Any advice on how the display and motor comms with the battery via the blue and green wires would be much appreciated
    View previous comments…
    M
    Mick Castleton
    M
    Mick Castleton
    I have a PicoScope which has serial CAM function so will test with that.
    M
    Mick Castleton
    Connected the PicoScope to the battery CAM bus lines and loads of comms going on clear data. Tested the same data lines going up to the display and there is nothing at all on the data lines. Removed the motor control PCB and can see a data chip on the back of the incoming Data Lines from the battery so seems this is dead
    M
    I tried connecting the app to the bike, at the start it finds the Bike ID but fails to connect.

    I tried connecting a remote second display via bluetooth and that connected to the display correctly but just flashes the same message no battery / no motor
    M
    When i turn the battery on it shows all power LED's on and all seems happy with full battery volts then connected to the motor output drivers but the display shows No battery / No Motor flashing
    M
    I have checked inside the battery and all is clean and connections.
    The battery power volts arrives in the motor ok.
    The battery has blue and green wires which appear to be data communication to the motor and display.
    Any advice on how to test the comms ? and how to test for faults ?
    M
    Hi Cream,
    A friend has a Specialized turbo como 4.0 2019 - SBC B11 :
    Battery shows fully charged and all cells show good:
    The display says No battery and No motor flashing

    many thanks for your expertise
    Mick
    [email protected]
    Gabriel Bobby
    We would be very grateful if you could help us, because we use the bike and take our daughter to kindergarten with it every day.
    Thanks!

    Gabriel
    Gabriel Bobby
    Suggestion:
    We think that for some reason the BMS has disconnected the battery and we can't start it back.
    Question:
    Is it possible to send you the battery to check the software or possibly reinstall it?
    Gabriel Bobby
    What I did:
    3.0. I disassembled the battery, measured the voltage of all the cells. And found that all cells were working. The voltage is 36 volts with each cell having between 3.4 and 3.6 volts. I took the battery to a friend. He works for a Bulgarian microsatellite manufacturing company and is a circuit board professional. He measured everything and found, no problem with the circuit board. All fuses work.
    cream
    cream
    Between 3.4 and 3.6 there's a big difference, the BMS will lock only based on that. Each cell banks must be within 20-30mV from each other on a healthy pack. If you have 200mV difference OCV, most likely in load you'll have more accentuated on lower charge level. Also, your charging circuit seems faulty, because of the external short you created.
    Gabriel Bobby
    Gabriel Bobby
    Thanks!
    Gabriel Bobby
    Second problem:
    2.1 After that it would turn on the bike. It didn't respond. No light or indicator are working. The battery is totally dead.
    Gabriel Bobby
    First problem:
    2.0 I plugged in the charger and it would not charge. I put it back on the bike and did a test via the app. The battery gave an error with one of the cells, but wrote out that it might cause a lower mileage. Again, everything worked except the charging. I left the battery disconnected and removed from the bike for a few hours.
    Gabriel Bobby
    How it happened:
    1. Out of jealousy while removing the battery I mistook the lock for the charging port. When I put the key in the port there was a small spark. After that the bike worked normally. No problems. The battery ran low and I decided to charge it.
    Gabriel Bobby
    Hi, my name is Gabriel. I'm writing to you regarding my wife's bike. The bike is a 2019 Specialized turbo como 4.0. I decided to reach out to you because from what I have read on the forum, you are the only one who can help us. The problem is with the battery on the bike - SBC B10 504 Wh 36V
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