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  1. E

    Hall Sensors'b'Gone

    I see, the average based on one phase cycle give almost I/5 of I_phase = I_battery! BTW I got code and components for bldc sensorless from atmel (AVR444), I will publish some results here. Thank you so much, to be continued ;)
  2. E

    Hall Sensors'b'Gone

    thank you for enlightening my mind ;) I'm in the dark with this subect. Can I ask you (one) more thing, what is the best schematic for sensing current, one, two, three sensors? And how the software must summarise the current value of N sensors?? BTW, It seems you are an expert in controller...
  3. E

    Hall Sensors'b'Gone

    Yes, I use the brakes of the bicycle to simulate heavy load (see the post on top)...
  4. E

    Hall Sensors'b'Gone

    Regarding the current measure on the battery since my last graph. I got a "current meter" to measure the right value directly on the phase. I was not expecting any good news, but I was curious to know the "duty cycle amplification factor". See the picture: Unfortunately I got the same...
  5. E

    Hall Sensors'b'Gone

    I ordered 10mOhm resistor to measure the "buck convertor" effect on phase. I'm not expecting any good result ;) About the time resolution of my plot, it's 5s.
  6. E

    Hall Sensors'b'Gone

    Waw, awesome! I'm a newbie about motor controller and your post explains to me a long term question: What is the relation between the battery and phase current? Thank you so much for your answer ;) Maybe you can answer another question. I have a castle icehv 40 controller pluged to my 250W HUB...
  7. E

    Hall Sensors'b'Gone

    @incrémented, If you want, I can help to draw the eagle board. Btw, Do you think it can be imp. with an arduino pro mini board? Olivier
  8. E

    Best 250W HUB motor (small, light & freewheeling)

    I got motor and controller here http://www.h9.com.cn/ The motor is a tongxin (200W for 83mm fork) and the controller is the LSW70A (max 250W 14A).I choose the tongxin for the freewheeling. I will also try the bafang (from 8fun) if I can find one for 83mm fork. olivier
  9. E

    controller issue for custom usage

    I got motor and controller here http://www.h9.com.cn/ The motor is a tongxin (200W for 83mm fork) and the controller is the LSW70A (max 250W 14A).I choose the tongxin for the freewheeling. I will also try the bafang (from 8fun) if I can find one for 83mm fork. Just one question, why there is...
  10. E

    Hall Sensors'b'Gone

    Awesome! Great job ;) I'm thinking to build my own controller for low power (max 20A) sensorless bldc motor. I need a very very small size. I think I can adapt your board with smd and smaller cap (if I'm not wrong). Will you share the source code and eagle files ?
  11. E

    controller issue for custom usage

    indeed, it was the issue. So it's the "Weakness lock (SW)" input on the controller. I think It help to put a lock and avoid the high current on ignition. Yep! Thank you so much nieles!
  12. E

    controller issue for custom usage

    Hi All, I got the micro controller LSW70A and I would like to use it with a custom display and throttle. I started the simplest way, I've connected the battery, the motor and the throttle signal (0 .. 3,3V). Nothing happened except a red led blinking (500ms). Then I tryed to remove the...
  13. E

    do you like this kind of electric bicycle kit

    Thank you all for your feedback, it's really appreciated ;) So it seems that 250W really sucks! Many of you gave me the same issue, 250w is useless for the hill. It's a hill issue? To be sure that I understand well, what kind of hills are you talking about? My city is almost flat, hill are...
  14. E

    do you like this kind of electric bicycle kit

    Are you the man of cummuterbooster? huge respect for your work, I read your website and I'm impress by your work! Except the legal issue, the problem with your motor is the type of battery that needs much more than 2C. For 250W HUB motor, I have 14Apeak limitation with 10S2P of panasonic. 300W...
  15. E

    do you like this kind of electric bicycle kit

    Yep, the panasonic NCR18650A has 3.1Ah for 2C, you get about 253Wh/kg that is pretty good but only for 250W max (12A peak) This is a good question, battery is an issue, but wire sucks also. I did some basic math and with a good power management the button could live more then 2Years. To...
  16. E

    do you like this kind of electric bicycle kit

    Sorry, - maintain the bicycle as normal, don't be bothered by the kit, get assistance only when you need it, hope, that's better ;)
  17. E

    do you like this kind of electric bicycle kit

    Hi all, With a friend we are building a electric bicycle kit for a specific use case. We are not the first with this approach, but we are curious how people like the idea. Our model is approaching the cytronex concept, here is our bicycle kit, - keep the bicycle minimal and beautiful, - our...
  18. E

    Best 250W HUB motor (small, light & freewheeling)

    You are the one ;) someone knows where to order this motor ?
  19. E

    RC-ESC vs E-Bike controllers

    I bought a Phoenix ICE HV 40A to test it with my 250W HUB motor. I did a short video in French - sorry - (http://www.youtube.com/watch?v=XefmIf0LApA) First of all, the controller is really tiny and works very well for nominal scope. The issue was exactly as Jeremy say What is the difference...
  20. E

    Best 250W HUB motor (small, light & freewheeling)

    an other 250W motor with a very good freewheeling quality, (specs are missing): http://www.szbaf.com/proshow.aspx?id=73 http://www.youtube.com/watch?v=y9BeZW79JZU
  21. E

    Q85 250W motor current load issue

    Hi Jag, I bought the motor without the wheel and spoke, unfortunately I did not weight the motor and now the wheel has been setup. I can do the check, I have to find a weighing scale ;) then, minus: - bionx wheel (dont find specs for weight?) - 2x36 (.01Kg) spokes from...
  22. E

    Q85 250W motor current load issue

    I put a watt-meter on the battery. Last night I fixed the issue and I learned life. I inverted two phases (yellow and green) not because my eyes are blured but the colors are wrong ;) The current load in freewheeling is about 2A, really better. cheers, olivier
  23. E

    Best 250W HUB motor (small, light & freewheeling)

    Dear All, I'm wondering which motor in the following list is the best choice for my specific usecase. I'm building a kind of ebike with the usecase similar as the nano technology from (http://www.electricwheel.co.uk/). My specifications are: Small battery 10S2P li-ion panasonic with max load...
  24. E

    Q85 250W motor current load issue

    Dear All, I got the Cute 85 250W 1,6kg hub motor (model G-M85F from ebike-bmsbattery.com/) and after testing it I got stranges behaviors. I did my test with the wheel in the air (in free wheeling mode) and the Lyen 6FET controller. From the PDF specs (from ecitypower.com I think it's the same...
  25. E

    Castle Phoenix HV ESC 30 for brushless HUB motor (250W)

    I will digest all information and go back with good feedback after testing Thank you all for your support !!!
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