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  1. W

    BBS01B 36V 250W - trying with higher voltage [success]

    Hello RayGo1, Not sure right now about the polarity, but if you make a mistake it's relatively easy to just rotate the diode. Reversed polarity didn't brake down any diode in my case, but later on I bought bidirectional ones to save some time on assembling. Below I add how it looks in my case...
  2. W

    BBS01B 36V 250W - trying with higher voltage [success]

    This is almost the fully charged voltage for 10s battery (~42V), so it would be reasonable. I didn't check it myself though.
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    BBS01B 36V 250W - trying with higher voltage [success]

    Hi Frank d. Although I didn't ever try with 36V, it did surprise me how good performance it is now with 52V. Yes, it can spin a lot faster compared to 36V, and high voltage allows you to pump more power through the motor with just the same current. However, as it is still not very healthy for my...
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    BBS01B 36V 250W - trying with higher voltage [success]

    It was worth it :) I think adding TVS diode is less problematic than changing an entire controller. I got a few questions if there is an easier way than adding a diode. I really don't know what people are afraid of :) I didn't even open motor's/controller's enclosure. Someone could say I...
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    BBS01B 36V 250W - trying with higher voltage [success]

    Hello marronnier, When I was building that bike I had the same problem finding useful information other than "change battery or controller", so after my mod has finally been working, I decided to contribute by posting full information here. I also felt that it was the least I could do after a...
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    BBS01B 36V 250W - trying with higher voltage [success]

    Hello again, I have to look at 3/4 speed, but fully charged at full speed it takes more than 1kW. My coulometer is scaled only to 1kW, but theoretically a new battery like mine could be drained with 1176W. I think at 9/10 or close speed it takes 1kW, then I don't know how fast it rises. The...
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    BBS01B 36V 250W - trying with higher voltage [success]

    I would like to post my bicycle's specs for everyone looking for such information in the future. I hope it will help some people in their research: Bicycle: Giant Adelaide (city bike) Frame size: L (57-58cm) Frame type: Hard tail Front suspension: RST 802-7 Wheel diameter: 28” Tyre size...
  8. W

    BBS01B 36V 250W - trying with higher voltage [success]

    Hello everyone, I have been testing my bike for a couple of weeks, and it is great! I have been playing with the options (programming cable), also relubricated the IGH (Nexus 7), but the result is that it is a little slower now, around 48-50kph max speed. I also killed IGH's ball bearings, so...
  9. W

    BBS01B 36V 250W - trying with higher voltage [success]

    Hello everyone, I finally mounted TVS diode within the brown cable, and it works! There is no error and the bike is riding, yes! The screen shows now 43V when the battery is fully charged. I checked the trigger point with some resistors, and 45V was already with an error, so iI think the TVS...
  10. W

    BBS01B 36V 250W - trying with higher voltage [success]

    Hi Bombus, Thank you for the information. With Fechter support, I just tried to connect some diode to lower the voltage for the screen, and it worked! Hovewer, I just tried it yesterday and limited the current, just to be safe. this weekend I want to check if I can use the full potential of my...
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    BBS01B 36V 250W - trying with higher voltage [success]

    Thank you Fechter for all the information. I think I will just go for the TVS diode, as this sounds the simpliest. For now, I am still waiting for the voltage to go below trigger point, but after that I may need some help in deciding which diode will be the right one. About the low voltage...
  12. W

    BBS01B 36V 250W - trying with higher voltage [success]

    Tats, I think that is because you also has 36v controller, so it is probably programmed the same way like mine. If there was a way of reprogramming it (or letting the controller to see dumped voltage, like 26V instead of 52V), then I think it would work. The question is how to do this. The app...
  13. W

    BBS01B 36V 250W - trying with higher voltage [success]

    Thank you for the reply Fechter. That sounds like it might work, but under the error there is another line at the screen, which makes me think that it could be controller firmware. It says "Controller Report", and to be honest, I have no idea if it really could be the case. However, can I get...
  14. W

    BBS01B 36V 250W - trying with higher voltage [success]

    I tried today to connect the battery, and there is Error 07H on the screen, like in the photo. Maybe someone knows about any way of getting rid of it without lowering the voltage?
  15. W

    BBS01B 36V 250W - trying with higher voltage [success]

    Thank you for all your help. Yesterday, I finally managed to assemble a new 52V battery pack, so I think this weekend I will make a first try. I hope everything will work with this setup!
  16. W

    BBS01B 36V 250W - trying with higher voltage [success]

    Thank you fechter, I will try to connect the 52V battery as you adviced. If it works, then the heat generated in controller and motor winding shall be lower than in the 36V version (regarding riding with the same power consumption), because of the lower amperage. That's why I do not worry about...
  17. W

    BBS01B 36V 250W - trying with higher voltage [success]

    Thank you fechter! That's exactly what I was thinking, but apparently sometimes people have "error 07 - overvoltage protection" but I found only examples where it appeared along with 36V batteries for some unknown reason, like it was a problem with something else than battery itself. I could...
  18. W

    BBS01B 36V 250W - trying with higher voltage [success]

    Hello everyone, I tried in a different forum, but did not receive any help, so I would like to ask you. Is it possible to make my motor BBS01B 36V 250W to work on 52V with standard controller (if not 52V, then 48V?)? I know about "error 07 - overvoltage protection", but everything else looks...
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