Power in Flux

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    Tried GPS acceleration app today, to measure 0 to...

    Tried GPS acceleration app today, to measure 0 to 100 km/h acceleration, could not get it to work because my GPS speed never got to zero, even though i was stopped, it was reading minimum 2 km/h. If...
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    thanks for the tip Richard, i've just installed...

    thanks for the tip Richard, i've just installed the 2nd one, straightforward little app, i'll give it a try next week-end.

    I wonder how accurate the GPS is for this kind of measure though, might...
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    I can also confirm these numbers above, 0.1kWh/km...

    I can also confirm these numbers above, 0.1kWh/km for moderate to rough riding , down to 0.08kWh/km for the boring rides LOL (280 kg build without driver and a few hills)
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    Hey Ian, if you are not going to race with the...

    Hey Ian,

    if you are not going to race with the bike on a track, then you shouldn't worry about the batteries getting hot. But your motor and controller should be nicely ventilated.
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    I'm still very pleased with my AC-23, riding...

    I'm still very pleased with my AC-23, riding AC-20 before.

    Question: anyone knows what is the physical difference between the 2 motors ? They have about the same peak power and they have same...
  6. Thread: Tesla BMS

    by Hugues
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    thanks for the link, it does involve a bit of...

    thanks for the link,

    it does involve a bit of work though, making sure not to short anything in the process or damaging cells.
  7. Thread: Tesla BMS

    by Hugues
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    thanks for the pics, curious, judging by the...

    thanks for the pics,

    curious, judging by the size of the module (the pic where we see it next to the tools), how can you fit this in a motorbike ? You need to break it down further ?
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    i think it's not uploaded unless the bike is...

    i think it's not uploaded

    unless the bike is white on a white background ;)
  9. thanks for sharing

    thanks for sharing
  10. Hi, i see from the specs of the first one 180...

    Hi,

    i see from the specs of the first one 180 N-m torque, which is not bad for a motor, but for a hub you don't have any demultiplication of that torque. YOu can find electric motors in the 100...
  11. Thread: Swiss EV show

    by Hugues
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    Fun day yesterday at the Swiss EV show, and it...

    Fun day yesterday at the Swiss EV show, and it was sunny and hot.

    Couple of pictures, thanks to Ian from the forum, also met Athlon who was on site too.

    736173627363

    and a short clip here:...
  12. Thread: dc-dc booster

    by Hugues
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    Interesting. But you say you want on-board...

    Interesting.
    But you say you want on-board charging. So that dc-dc module will fit on-board. But what about your 58 volt dc source ? how big is that ?
  13. She has a nice butt, yes :cool: A nice shot...

    She has a nice butt, yes :cool:

    A nice shot from a photograph that was on site during the lap, Norbert Nickels

    7358
  14. sorry, duplicate

    sorry, duplicate
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    ok, i got the motor amps now, these were the 2...

    ok, i got the motor amps now, these were the 2 bytes. I did not modify the code yet to account for signed values, will add this later.

    For those interested in writing your own apps for Android...
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    well the screen shots above are from Torque, but...

    well the screen shots above are from Torque, but believe it or not i am writing my own app for Android, yes, using MIT App Inventor 2, cool program, web based.

    I looked again at the data i...
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    OBD2: How to read a PID ?

    Hi guys,

    I'm working on a project and i need to read a PID coming from my OBD2 connection with Orion BMS and Curtis.

    On the first picture below, to get the voltage of the lowest cell, we need...
  18. A short clip of that day, it was cool, thanks to...

    A short clip of that day, it was cool, thanks to Athlon from this forum for the onboard shots.
    https://m.facebook.com/story.php?story_fbid=1507406529316583&id=1155518497838723
  19. Zvexx P1 at the Electric Grand Prix in Monaco this week-end

    ok boys, a little self promotion here, again,

    i'll be showing off my bike at the Monaco electric Grand Prix this week-end on Saturday all day in the e-Village, and i will join other electric...
  20. Thread: Swiss EV show

    by Hugues
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    Great ! Bring the good weather too !

    Great ! Bring the good weather too !
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    This guy has dissassembled Leaf cells, at 18:11...

    This guy has dissassembled Leaf cells, at 18:11 he says the shell is not that heavy.
    https://www.youtube.com/watch?v=WcqaAz1vjlo

    Looks like a messy job in my opinion.
  22. Thread: Swiss EV show

    by Hugues
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    Yes and i'll be there with the bike, hopefully...

    Yes and i'll be there with the bike, hopefully without rain.
  23. You'll probably need to ventilate your motor very...

    You'll probably need to ventilate your motor very well. I'm running 7.04:1 and I had to do the following:
    - add 12v radial blower to force air into the openings on the shaft side to ventilate rotor...
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    Zvexx P1 at the Monaco Supercar show

    ok boys, a little self promotion here,:cool:

    i'll be showing off my bike at the Monaco Supercar show this week from April 20th to 23rd 2017 in....well...Monaco:...
  25. Pretty cool build ! we have pretty much the...

    Pretty cool build !
    we have pretty much the same gear,
    can't you reach a ratio of 7:1 with this rear sprocket ? i have 7.04 with 176 tooth on wheel and 25 on motor

    watch out when you connect...
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