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  1. Jacka98

    DIY Ebike frame from scrap metal. (Teleport prime 120 clone)

    Thats a good tip, I might do it at somepoint. The insulation tape under bolts is compressing littlebit.
  2. Jacka98

    DIY Ebike frame from scrap metal. (Teleport prime 120 clone)

    It weight about 58kg, so its pretty heavy. But it doesn't feel heavy when riding
  3. Jacka98

    DIY Ebike frame from scrap metal. (Teleport prime 120 clone)

    Haven't uploaded a long time, but the bike is now done. There is only some little things that I still need to do.
  4. Jacka98

    DIY Ebike frame from scrap metal. (Teleport prime 120 clone)

    those are too short
  5. Jacka98

    DIY Ebike frame from scrap metal. (Teleport prime 120 clone)

    I have tried to find 100mm/177mm threadless bb, but I can't find any.
  6. Jacka98

    DIY Ebike frame from scrap metal. (Teleport prime 120 clone)

    Sabvoton 72150 and 23s 7p Samsung 30T battery.
  7. Jacka98

    DIY Ebike frame from scrap metal. (Teleport prime 120 clone)

    Thanks! I'm also excited to see how its going to ride. I like the 2WD idea, but the extra weight to front wouldn't be good.
  8. Jacka98

    DIY Ebike frame from scrap metal. (Teleport prime 120 clone)

  9. Jacka98

    DIY Ebike frame from scrap metal. (Teleport prime 120 clone)

    Yes thats what I meant. I used 34.5mm inner diameter tube for the bottom bracket, but 33mm would be probably right size. Bearings fits good and firmly. I have mini metal lathe what I used to make the bearing fittings. I think that you could also find ready to made bottom bracket so you just...
  10. Jacka98

    DIY Ebike frame from scrap metal. (Teleport prime 120 clone)

    Maybe 30-60min, depending what I'm doing and can I use gloves. Then I need to take little break. That is pretty interesting idea(y)
  11. Jacka98

    DIY Ebike frame from scrap metal. (Teleport prime 120 clone)

    Yes I work outside. In winter when its cold I can't work too long because my fingers freeze. and lately its been around -20°C to -30°C so the project hasn't progressed very fast.
  12. Jacka98

    DIY Ebike frame from scrap metal. (Teleport prime 120 clone)

    I made a little mistake. The bottom bracket tube was little too big, so the threads isn't really good. The bottom bracket does thread good on there, but I don't know if it will hold. I will put some loctite and see if it will hold in place. But if not I might weld it.
  13. Jacka98

    Li-ion batteries on freezing temperatures. Experiment

    Its working fine. Only thing that I don't like is that it doesn't have remote voltage sensing. At higher currents there is some voltage drop so the real capacity is little higher, because the tester thinks that the battery is already empty. But doesn't matter that much if you are going to do...
  14. Jacka98

    Nanjing far driver controllers

    I have tried to change the PID settings, but I can't change them:unsure: Have you guys changed the pid settings successfully?
  15. Jacka98

    10kW 72v Electric mini bike build

    Thanks! Yes it is soldered. I used ladder type 0.2mm copper strip.
  16. Jacka98

    10kW 72v Electric mini bike build

    Its getting pretty cold in here🥶 -30C
  17. Jacka98

    2500$ 28kW Chinese pit bike qs138 70H V3, Fardriver 96680

    Some old riding video
  18. Jacka98

    Li-ion batteries on freezing temperatures. Experiment

    Test cell is Molicel P42A. And the outside temperature was -26C. Internal resistance increases on the cold. So the voltage drop is much higher on cold battery. I think that 10A was almost max current that I could drain from the battery, because the voltage drop was so high. And its interesting...
  19. Jacka98

    DIY Ebike frame from scrap metal. (Teleport prime 120 clone)

    swingarm is 3mm thick and the smaller tubing on the frame is 1.5mm
  20. Jacka98

    DIY Ebike frame from scrap metal. (Teleport prime 120 clone)

    Yes the wood table wasn't best background for the frame, it blends pretty good to it :D
  21. Jacka98

    DIY Ebike frame from scrap metal. (Teleport prime 120 clone)

  22. Jacka98

    Samsung 40T3 vs Samsung 30T vs Molicel P42A Comparison

    Samsung 40T3 was brand new 0 cycles and the P42A and 30T were reclaimed but also 0 cycles before test. That's very interesting thread. Yes I soldered the 8AWG wires to the cells. I think that 30A continuous might be little too much for 40T3. With 20A test it sure would be much cooler.
  23. Jacka98

    Samsung 40T3 vs Samsung 30T vs Molicel P42A Comparison

    Molicel P42A, Samsung 30T and Samsung 40T3 comparision. All batteries were tested with 30A test. They were charged to 4.2V and cutoff 2.5V. There is little voltage drop between battery and the tester so the real capacities are actually little higher Samsung 40t3 warmed up so hot that I was...
  24. Jacka98

    Nickel strip vs Copper strip current test

    I have 1S161P sony vtvc4 battery pack. Playing with high current 1S 161P Battery pack. Theoretically capable to 4830A output
  25. Jacka98

    Nickel strip vs Copper strip current test

    I tested 0.2x7mm copper and nickel strips. The result is obvious, but its interesting to actually see the difference.
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