Search results

  1. E

    EVE ICR 18650 cells in Swytch GO+

    > Those increases in performance and lower costs bode well for e-bike batteries I think, and maybe why Swytch are also changing to EVE? I think Swytch is just saving money -- EVE 26V cells were listed for only $1.55 on 18650batterystore.com (out of stock now) and that's the retail price.
  2. E

    EVE ICR 18650 cells in Swytch GO+

    Actually the video does mention that EVE is "on the brink of bankruptcy".
  3. E

    EVE ICR 18650 cells in Swytch GO+

    Thanks. That's reassuring. (not the "they may go bust" part :)
  4. E

    EVE ICR 18650 cells in Swytch GO+

    I had never heard of EVE before seeing Swytch's new "GO+" battery that uses EVE ICR 18650/26V cells (as per the label on the box). Should I be concerned that it may be using LCO chemistry which is not ideal for high drain applications? The MSDS here it seems to show its probably NMC though --...
  5. E

    Gogo best gf700 strangely shut down

    Try doing a reset to factory defaults and start all over again. GOGOBEST official YT channel seems to have instructions for reset as well as speed unlock.
  6. E

    Ebike help

    A straight answer that will satisfy "the mom" is impossible as even the new battery yet to come may cause a fire. Not all fires are caused by mismatch and misuse. Here is another nuanced opinion: given the alt battery is 13Ah and its a working ebike battery its very likely capable of supplying...
  7. E

    Battery Fires

    Tesla crash sent battery ablaze and killed four in Toronto earlier today https://www.cbc.ca/news/canada/toronto/fatal-crash-four-dead-lake-shore-cherry-1.7361751
  8. E

    9mm drop-outs, 10mm hub motor flats - a query

    Swytch these days have an option to choose 10mm or 9mm axles (across the flats). That said, I have seen bikes with Q/R wheels that have dropout gap in between 9mm and 10mm -- like 9.6mm.
  9. E

    Help! Front Motor fitting advice needed for a newbie. (Swytch Universal)

    They seem to be concerned about microstructural defects caused by filing alloy drop outs that could lead to crack initiation and crack growth in the long run. But they are silent about the effect of thinning the walls of the hollow axle where the wires come out. Also there are posts out there...
  10. E

    Dual Battery Connection Adapter

    Part of the confusion here is not distinguishing between the emf of the battery and voltage in the circuit. Batteries connected in parallel will have same voltage in the circuit but can have different emf under load because of the drop across the internal resistance. When load is removed, no...
  11. E

    Do any cadence sensored hub motor controllers activate pedal assist when ghost pedalling backwards as well as forwards?

    If back pedalling is not a requirement, just use a 555 Timer IC to generate a pulse train. About 10Hz with 1:2 ratio for on/off would work perfectly. Pretty easy and cheap.
  12. E

    Do any cadence sensored hub motor controllers activate pedal assist when ghost pedalling backwards as well as forwards?

    In theory yes, but hard to implement. An easier one with single Hall would be to use pairs of opposite polarity magnets with different spacing among and between pairs. But poor response time and complicated.
  13. E

    Do any cadence sensored hub motor controllers activate pedal assist when ghost pedalling backwards as well as forwards?

    Of course yes. I was referring to the question at start of this thread which asked whether we can have a sensor that works for pedalling in both directions.
  14. E

    Do any cadence sensored hub motor controllers activate pedal assist when ghost pedalling backwards as well as forwards?

    There is no way to detect direction of rotation with just one hall sensor, so they have to be dual hall. To see this, think of discrete images of a circle with dots on them --- from that info alone one cannot know whether the circle is rotating clockwise or anticlockwise. One needs the...
  15. E

    Technical Question

    One difference is that, at least on some controllers, the start threshold is set to a certain number of pulses -- say 6 pulses which in case of 12 magnet disc is 1/2 rotation, but 6 magnet disc would take a full rotation of the crank. That is, how quickly the motor engages when you start...
  16. E

    Thioughts on removeable kit,

    For what? I'm from Canada and you think I do not know GRIN Technologies?
  17. E

    Thioughts on removeable kit,

    Many options in the UK and EU, but none of them ship to where I am (Canada), unless I missed something. We pay dearly for everything here. Current Swytch price for their GO line is by far the best I can find from here for a kit using parts from manufacturers I've at least heard of -- Aikema...
  18. E

    Thioughts on removeable kit,

    Why do so many say Swytch is pricey? Swytch is probably the cheapest option for front hub kits at their 40% to 50% sale price that is available all the time. Where can you get a wheel, controller, PAS and battery( 36V, 10Ah) for $450 + $50 shipping to the US? That's where Swytch GO++ pre-order...