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  1. C

    Where do you buy tabs for spot welding ?

    Hi all, I've been reading pages and pages of this forum, but I can't find a lot of information about what kind of tabs you use for spot welding,which material is better, and what are the suppliers ? Many thanks :) Flo
  2. C

    Building a 18650 cell case without soldering

    Hi all, I see 18650 cells are gaining more popularity these days, but making a pack with these cells is not so easy and requires in much cases a spot welder... Do you think it would be possible to build a case for holding and connecting 18650 cells and also to allow easy replacement maintenance...
  3. C

    Cell discharged to 0v

    Hi everybody, I left my battery pack stored for several months with no checking. I recently measured the cell balancing and found that a string of 4 paralelled Turnigy 5s 20c had one cell at 0v !! So I have 4 Turnigy packs with 1 out of 5 cells at 0v, I also noticed one of the packs is puffed...
  4. C

    Ultra low cost torque arm proposal

    Hi everybody, I think I'm going to need a torque arm for my rear wheel motor (aluminium fork) because tha axle has started spining after only 3 runs :? The problem is that everything I see is pretty ugly with clamps etc ... What do you think about using that kind of spacer as a torque arm...
  5. C

    First Ebike build -> Big sparks, need help !!

    Hello all, I spent today assembling my first ebike with the following parts: Crystalyte HS3540 rear Lyen 12 FET 4110 sensorless controller CycleAnalyst Turnigy Battery 20s 5Ah for test (4 x 5s batteries in serie) Everything seemed fine so after having connected the elements and check the...
  6. C

    7speed Freewheel problem HS3540 (noob question)

    Hello all, This is my first post on ES,first I'd like to thank every member of this forum for the great source of information they provide ! I've been reading this forum for a long time and finally decided to build an e-bike, so now the problems start :o I ordered a HS3540 rearwheel motor to...
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