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  1. spkpn

    suitable hall sensors

    Dear all, I emailed scorpionsystems to ask whether they also sell their Scorpion HK-7050 motor equipped with hall sensors (and different windings). The answer was yes :) more specifically: now i need advice on which to use so that I can then use a kelly BLDC motor controller to control the...
  2. spkpn

    high rpm motor and controller

    Hi all, for my second conversion, I am desperately looking for a BLDC motor and controller combo that has the following properties: 1. motor goes up to 8000RPM 2. torque control 3. 4-8 kW 4. compatible with system voltage in the range of 36, 48 or 60V 5. motor and controller < 2000$ the...
  3. spkpn

    building my battery: 24s2p (a123 20Ah)

    Hi all, I will document the progress of my pack build here :) Design: Module1: 6s2p Mudule2: 8s2p Module3: 10s2p The different size of the modules are due to space limitations in my build. Modules are all removable and will be charged at home with 3 RC style balance chargers. LVP is realized...
  4. spkpn

    super dense DowKokam cells?

    Hi everybody, here: http://www.dowkokam.com/tech-cells.htm dow kokam speaks of 143Ah/Kg cells, altough I don know the chemistry it seems that it is some sort of lithium, therefore with a nominal voltage of >3V(?), those cells have a claimed energy density of more than 430 Wh/Kg?? That is a lot...
  5. spkpn

    how to program a sevcon gen4

    Dear all, I bought a used sevcon gen 4 controller. The seller (a member of this forum) assured me that it was possible to program/set up the controller with nothing else but a usb-can converter (no handheld etc). In fact he told me after I specificly asked for SOFTWARE OR HARDWARE necessary...
  6. spkpn

    please comment on my plan

    hi all, here is my plan on how to build and maintain my battery pack: pack = 3 modules connected in series module = 8s2p battery pack of a123 20 Ah cells The modules are planned to be connected with plugs to each other to ease handling. I will fit all the modules with rc-style balance wires...
  7. spkpn

    a123rc 20Ah promotion

    FIY there is a new promotion sell out of 10000 a123 20Ah cells on a123rc. At a price of 37$ per cell (shipping included afaik). http://www.a123rc.com/goods-468-Exci...TIC+CELLS.html My experience with this vendor is good so far, see also https://docs.google.com/spreadsheet/...GB&pli=1#gid=0...
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