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  1. J

    Range Extenders

    The problem is the design of the diode module, it´s just an schottky diode It takes only a basic thermal test, let´s say 10Amps to check that those diodes overheat seriously In Spain it´s already known, many peope affected by the same problem as you
  2. J

    STEPS E8000 Motor Service

    My DU-E8000 is now 9200Km (5700 miles ) and it´s time for a new service After 4500 Km (2800 miles) with PG75 grease it has performed with absolutely no problem Water has been kept away of this motor
  3. J

    Re-Build ande Re-Cell of Shimano Batteries

    You can accidentally make a short with nickel fragments scattered around the workbench. The tip of the pliers tends to break in this type of work. You don't want metal fragments falling on a LiIon battery There is another risk, which is not usually discussed: breaking the battery case...
  4. J

    Re-Build ande Re-Cell of Shimano Batteries

    It´s not Shimano, it´s Sony Shimano batteries are manufactured by Sony Wuxi (china division) so, Sony-Murata cells is a logic selection. Information is reliable, the source is the UN 38.3 test report for transportation safety
  5. J

    Shimano Battery Life Poll

    How did you apply the 1 amp charge? I have discharged mine (8010) in the lab, down to 28V with up to 6 amps and had no problem. It´s is still alive DC load was connected internally in the power pack with the battery off
  6. J

    Trail Watts starts testing Range Extender for Bosch.

    Stay away from Volabike!!! That company is selling sh*t like that on the pictures attached by Trailwatts. They talk about "safety layers", "propietary electronics" but the fact is that they are selling the kits with silicon or schottky diodes enclosed on heat shrink tube ignoring all the...
  7. J

    Shimano BT-E8035 Integrated Battery Issue: very fast degrading and loss of range

    Hope that happens soon, really. You will stop loosing years of life blaming Shimano all over the internet. You know! I had problems with my motor, had to repair it by myselfm but it´s now 1600 Km of playfullness and joy if ride...and much much less posting about Shimano in this and other forums...
  8. J

    Reviving a dead BT-E8010 battery

    The BMS-AFE is an standard chip from Texas Instrumets, it controls de secondary protection, the "fuse" you mention, as a last line of defense May be for any reason, the BMS tripped an alarm and tirggered the fuse What is more interesting is that the control circuit, the uC driven does not block...
  9. J

    Shimano BT-E8035 Integrated Battery Issue: very fast degrading and loss of range

    It´s only possible with laboratory mesaruments directly on the battery using a dc load and datalogger. Fortunately i have both, the lab and a new battery so in the next months i plan to start using it and tracking capacity on the lab vs life indicated on the Shimano Display
  10. J

    STEPS E8000 Motor Service

    A good question I don´t know the cause, but my feeling is that there is a lot of variability. Some motors last 20.000+km, some fail before 3.000 Mine was donde with only 3500Km, and after 100km more had to replace all bearings, not only the ones on the pedal shaft, it was not a problem of water...
  11. J

    STEPS E8000 Motor Service

    Nice work!! Any clue on the battery-motor protocol?
  12. J

    STEPS E8000 Motor Service

    Mine is 1200Km after service, no problems Mixed use, MTB, enduro, road, no complaints from the torque sensor
  13. J

    Shimano E8000 - E010 / E01020 / E01021 madness

    Yes could be an strain gauge one, but for me it´s strange because the ring magnet is too far from the fixed PCB. There is where the encoder should be for detecting the pedal stroke. For example the encoder Allegro A1333 used on makerbase servo stepper motor for 3D printer in mounted on top of...
  14. J

    Shimano E8000 - E010 / E01020 / E01021 madness

    Have you tested this point? Here it is said that calibration parameters are saved on the main board uC o memory and that calibration probably is dependant on each particular sensor.
  15. J

    Out of warranty shimano repairs

    Have you decoded the communication protocol between battery and motor so we could the original Shimano battery with this new motor?
  16. J

    E8000 display doesn't always power up first time?

    It´s a software bug, related to unproper closing of radio (bluetooth) sessions. In my case it started since firmware update to 4.7.1 I have had the same problem and the debug process was extensive, along months, changing, all cables, display, battery connector. After much researching I was able...
  17. J

    STEPS E8000 Motor Service

    Grease and sealant were the two main issues for me before servicing the DU-8000 I am really surpresied of how some people who has never opened a Shimano motor are writing tutorials and giving advise about this issue. Please, take catalogs from Loctite, Molykote, SKF and read, there are tons of...
  18. J

    STEPS E8000 Motor Service

    I used PG-75 on my rebuild 1200Km until now all seems to be ok. No increase on noise whatosever I tend to use motor in ECO, BOOST is limted to 110% and all 3 modes have power limited to 250W instead of 500W as it´s configured by default About the seals, I kept them in place, just cleaned and...
  19. J

    STEPS E8000 Motor Service

    Shimano Service is for DIY For a professional service, it is a risky business. If you are responsible for any non-bearing electronic failure, the customer will still blame you unless you are forced to sign a liability waiver, assuming the motor has reached the end of its useful life and...
  20. J

    Shimano Battery Life Poll

    Bosch although I have not much information about the internals on Gen IV. I don´t know if it´s fixable or not. Brose could be another option, may be the prefered. It´s prone to fails due to water ingress but it can be serviced, fails are mechanical, clutch and drive belt. Electronics are...
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