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  1. J

    "New" TSDZ2 with "old" controller ?

    Measure the voltage between GND and SWIM on the speed sensor connector : 5V = old controller, 0V = new controller.
  2. J

    TSDZ2 OSF for all displays, VLCD5-VLCD6-XH18, LCD3, 860C-850C-SW102.

    I just went for a short test ride with SW102 version... It's great ! On my usual test hill at max power (48V motor, 14S battery, 800W/17A) the motor is almost 10°C cooler than before ! Also the power delivery at higher cadence with field weakening enabled is better : with the previous version...
  3. J

    New "TSDZ2 Torque Sensor Central Motor"

    I used thermal compound https://www.aliexpress.com/item/32956752708.html?spm=a2g0s.9042311.0.0.27426c379bE71i It conducts heat like thermal grease, except that it dries and sticks like glue after 24h. It's not precisely known, but people seem to agree it should not go over 90°C. I've set mine...
  4. J

    New "TSDZ2 Torque Sensor Central Motor"

    This is where I placed it as well (but in the part facing the controller, the rest of the motor being wrapped with aluminium shims for cooling). It seemed to me that the motor laminations get hot first since they are directly against the windings. It works well, but I haven't done any...
  5. J

    Thread for new battery breakthrough PR releases

    No, 110 kilowatts of power per kg. The interest of this study is that they claim to have solved the problem of lithium dendrite growth.
  6. J

    Thread for new battery breakthrough PR releases

    "A dynamic stability design strategy for lithium metal solid state batteries" : https://www.nature.com/articles/s41586-021-03486-3 Now that sounds cool.. There's often a catch with newly announced technologies, like a low energy density or other parameters, but here they claim a power of...
  7. J

    Hardware temperature control tsdz2

    Hi, I'd like to share my own experience with thermal dissipation. I first did the mods with thermal pads and grease as indicated in the wiki. I also added 20x30x2mm thermal pads against the motor laminations, between the flanges screws, and top of that, 3mm thermal pads wraped around the motor...
  8. J

    TSDZ2 OSF for all displays, VLCD5-VLCD6-XH18, LCD3, 860C-850C-SW102.

    Anybody in for a SW102 donation to Mbrusa (if he's interested) ? I could order it and make the initial flahing with the case opening - I'm getting used to the process - before sending it to him. PM me if you want to participate )
  9. J

    TSDZ2 OSF for all displays, VLCD5-VLCD6-XH18, LCD3, 860C-850C-SW102.

    If I understood well, the Torque ADC offset is not meant to be the value from which the motor will start. It's simply the "weight" of the pedals alone, so the system has a baseline. You can fine tune the pressure level from which you will have assist with the Torque ADC threshold value : the...
  10. J

    TSDZ2 OSF for all displays, VLCD5-VLCD6-XH18, LCD3, 860C-850C-SW102.

    Well on my system (SW102 / 20.1C2) the error 2 occurs every time I exit the configuration menu, even though the torque ADC offset is set at the real (no load) value. Turning off and on the display clears the error and the values I have set are saved. It's not a big annoyance since the booting...
  11. J

    TSDZ2 OSF for all displays, VLCD5-VLCD6-XH18, LCD3, 860C-850C-SW102.

    What you're looking for is the hybrid mode. Or the power mode with boost.
  12. J

    New "TSDZ2 Torque Sensor Central Motor"

    1) 2) As Casainho and other developers have explained, field weakening allows for assistance above 4000 rpm for the motor, but at the cost of a lower efficiency (= more heat). That corresponds to around 90 cadence at the crank. You can have assistance a little above 90 cadence without field...
  13. J

    New "TSDZ2 Torque Sensor Central Motor"

    I've read several posts describing the drag as low to almost imperceptible. It's very noticeable on mine, so I thought the one way bearing could be faulty and would let the blue gear and motor spin. I measured the voltage of the hall sensors when turning the pedals with assist 0, and didn't see...
  14. J

    TSDZ2 OSF for all displays, VLCD5-VLCD6-XH18, LCD3, 860C-850C-SW102.

    I just installed it on the SW102. The startup time when turning the display on is much quicker, I don't even have time to read the booting screen ! One issue is that whenever I exit the configuration menu, I always get an error 2 : torque sensor. Switching off and on the display clears the...
  15. J

    TSDZ2 OSF for all displays, VLCD5-VLCD6-XH18, LCD3, 860C-850C-SW102.

    Yep, that's how it's been for me as well. I do have a significant temperature increase and can overheat when using full power uphill (I have a temperature sensor installed), but it's no worst than the 20.1B version I used before. I rarely go over 85 cadence. Concerning consumption, it's a bit...
  16. J

    New "TSDZ2 Torque Sensor Central Motor"

    Figuring out the maximun temperature a magnet can withstand in a motor is complex and depends on more parameters than just their maximum working temperature : their shape and positioning are important factors as well. Another good read ...
  17. J

    TSDZ2 OSF for all displays, VLCD5-VLCD6-XH18, LCD3, 860C-850C-SW102.

    Indeed, and there's also the influence of the amount of current drained : if you draw 15 amps continuous you'll get less total Wh than if you draw 5 amps because of heat losses in the battery. Battery makers indicate the capacity for a low discharge rate.. That's why Casainho's implementation is...
  18. J

    TSDZ2 OSF for all displays, VLCD5-VLCD6-XH18, LCD3, 860C-850C-SW102.

    Andrea, could it be that after all theses high temperature adventures you have overheated your motor and partially demagnetised it as indicated in the wiki ? It that case it seems that the motor draws as much electrical power as before but the mechanical power output is much less. I imagine that...
  19. J

    TSDZ2 OSF for all displays, VLCD5-VLCD6-XH18, LCD3, 860C-850C-SW102.

    I don't know if that's mandatory, but it's the one I used.
  20. J

    TSDZ2 OSF for all displays, VLCD5-VLCD6-XH18, LCD3, 860C-850C-SW102.

    The setting "Battery power max (W)" is actually the maximum amount of power you want to draw from the battery. You can set it on 750W for your motor, or lower if you want to prevent overheating. From there, if you want to dial back the power in the various assist levels, you adjust the...
  21. J

    New "TSDZ2 Torque Sensor Central Motor"

    Is there a graph of torque vs RPM available for the TSDZ2 ? I would like to know at which RPM do we have peak power and peak efficiency. I assume the field weakening introduced in the latest versions of the firmware hasn't changed theses values.
  22. J

    New "TSDZ2 Torque Sensor Central Motor"

    The case looks almost identical to the Bafang color 500C display indeed, but this "500S-U" seems to be monochrome and Enerprof sells it for almost 20€ cheaper than the 500C. I wonder if it's a 500C that they flashed to make it compatible with the TSDZ2 (in this case it seems weird that they...
  23. J

    TSDZ2 OSF for all displays, VLCD5-VLCD6-XH18, LCD3, 860C-850C-SW102.

    The current 20.1C for 850C/860C/SW102 from GitHub.
  24. J

    TSDZ2 OSF for all displays, VLCD5-VLCD6-XH18, LCD3, 860C-850C-SW102.

    I absolutely agree with HughF and had the same experience as him. There are occasional random freezes in the configuration menu, but nothing that did prevent me from setting up all parameters, and all menus are accessible (including torque sensor calibration with custom weight) The street mode...
  25. J

    TSDZ2 OSF for all displays, VLCD5-VLCD6-XH18, LCD3, 860C-850C-SW102.

    Speaking about the SW102, I noticed it reads voltage 0.3V higher than all my other measuring tools. I haven't seen an option to correct it, like in the version for original displays. Can I just increase the reset voltage and the low cut-off voltage by 0.3V in order to have a correct estimation...
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