Recent content by elkick

No beaches, no palms, no girls - just real world eMTB tests! :wink: No belts or chains either. rrw4ERZslMo

Thanks for your answer and you're right about the insulation, it might require plastic holders and additional stuff in between them. Which complicates it again. I was just uncertain if there are reasons from an electrical perspective against it. Keep up your professional work, I really...

The concept is obvious, I understood that and that's how I'm doing them as well. For flexibility reasons I was thinking of connecting both rows at their end instead of connecting them in the middle with stripes. Something like this (sorry for the low quality drawing):

Nice work. Just a question: you used to solder the middle section with the "butterfly mechanism" with nickel strips, are those connection also necessary from an electrical perspective or would it be ok to just connect the parallel packs in series without the middle connections between the packs...

The BMS is protecting individual cells from dropping to low, the VESC only reacts on the total voltage. :wink: Advantage of the VESC is the soft cut off though (start/end can be defined), which should be initiated earlier then hard BMS cutoff for overall voltage. But it should not be an issue...

The Evolve charger will work, your BMS can take up to 10A and your cells in 3p 7.5A. Recommended charging would be 2A for long lasting cells, but I think it should be ok.

It might make sense going this way (bypassing BMS for discharge), because any solution which allows regen brake power >10A flowing back into the batteries is more expensive and significantly bigger in size. And since good cells like the VTC5 or HE2 are almost never significantly out of balance...

It will work well, no problem with 42V. I'm using exactly the same with a 42V/2,5A charger.

The first one is ok and would also fit the chinch plugs form the charger I mentioned above.

Just an example below, "switch" connects then to VESC(s). "P" or "Discharging" means the cables going to ESC/Motor. You can use any 10s (42V) CCCV charger (with chinch plug for example), like this one: http://m.ebay.de/itm/131634833923?_mwBanner=1

And always use a fuse.

Just awesome! And a good job to get eSkating into the right perspective. Also it's nice to recognize a few familiar names. :D

Yes it works with 1.13, but why not upgrading to 2.15 with some enhancements also in regards to sensored mode?

That won't help, detection is not the issue, but the wrong firmware is. First time accelerating will kill the VESC then, so it's better make sure that the FW is correct before doing anything. Detection is the most reliable way to get the VESC operating correctly with your specific motor.

Yes, it kills the FETs and/or the DRV instantly during motor detection.