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by Matador
Aug 18 2016 9:12pm
Forum: Battery Technology
Topic: Another No Solder/Weld 18650 Build (Updated 03/09/2014)
Replies: 344
Views: 62919

Re: Another No Solder/Weld 18650 Build (Updated 03/09/2014)

The Nickel Stips seem pretty good According to wiki, https://en.wikipedia.org/wiki/Electrical_resistivity_and_conductivity Resisitivity of Nickel is [6.99×10−8 Ohms.m] Lets say you want to uses one 10cm long [0.1m] 100% pure Nickel Strip (not plated steel) that is 0.2 mm thick [0.0002 m] and 8 mm wi...
by Matador
Aug 14 2016 9:45pm
Forum: Battery Technology
Topic: Another No Solder/Weld 18650 Build (Updated 03/09/2014)
Replies: 344
Views: 62919

Re: Another No Solder/Weld 18650 Build (Updated 03/09/2014)

Consider the option of having the springs and the current-carrying elements be separate parts? Copper by itself is too malleable to make springs out of this element. What he means is cooper sheet over springs, connected to terminal. Se my early intent I have in my garbage pile. :D https://endless-s...
by Matador
Aug 14 2016 9:06pm
Forum: Battery Technology
Topic: Another No Solder/Weld 18650 Build (Updated 03/09/2014)
Replies: 344
Views: 62919

Re: Another No Solder/Weld 18650 Build (Updated 03/09/2014)

Just for correction, I checked again on digikey.ca, the springs I bought were BCC-ND model rather than 211 D. And the're not zinc plated but rather Nickel plated...
I Made corrections to previous post buy editing them. As I said, I'm just an amateur, but this is soo fun !
by Matador
Aug 14 2016 8:37pm
Forum: Battery Technology
Topic: Another No Solder/Weld 18650 Build (Updated 03/09/2014)
Replies: 344
Views: 62919

Re: Another No Solder/Weld 18650 Build (Updated 03/09/2014)

Consider the option of having the springs and the current-carrying elements be separate parts? (copper strips in-between the spring and cell?). Nice work, thanks for posting the pics here... That's an excellent idea spinningmagnets!!! I'd love to thinker more on this and try to put a copper piece s...
by Matador
Aug 14 2016 8:06pm
Forum: Battery Technology
Topic: Another No Solder/Weld 18650 Build (Updated 03/09/2014)
Replies: 344
Views: 62919

Re: Another No Solder/Weld 18650 Build (Updated 03/09/2014)

For my copper bus bars made of 1/4inch OD copper pipe. The outer diameter is 0.64 cm while inner diameter is 0.43 mm. So the conductive residual area is 32.2 - 14.5 = 17.6 mm2. So these buss bar are equivalent to 5 AWG copper wire (should support 80 Amps no problem)... Copper resistivity is 1.68 x ...
by Matador
Aug 14 2016 7:39pm
Forum: Battery Technology
Topic: Another No Solder/Weld 18650 Build (Updated 03/09/2014)
Replies: 344
Views: 62919

Re: Another No Solder/Weld 18650 Build (Updated 03/09/2014)

Jonathan - thanks for the additional info! Trying to get my head wrapped around the idea that your bike is lighter than your battery pack. I have two ebikes, both with rack mounted battery packs. One is standard off-the-shelf, while the other is a custom ("hack") mount. Neither battery is over ten ...
by Matador
Aug 14 2016 3:21pm
Forum: Battery Technology
Topic: Another No Solder/Weld 18650 Build (Updated 03/09/2014)
Replies: 344
Views: 62919

Re: Another No Solder/Weld 18650 Build (Updated 03/09/2014)

Cell holders would do it. Make sure it's the kind with thick enough wires to be able to pumps enough amps out of them. In my case 182 cells mean 46 cells holders, so I though why not build my own 13 cell holder and make them stackable... In the end, my choice is more expensive (plexiglass is expensi...
by Matador
Aug 14 2016 1:22pm
Forum: Battery Technology
Topic: Another No Solder/Weld 18650 Build (Updated 03/09/2014)
Replies: 344
Views: 62919

Re: Another No Solder/Weld 18650 Build (Updated 03/09/2014)

In this 14S 9 P config, the whole thing is 20.2lbs (9.2kg) : 7.2lbs case + 13.0lbs for the 126 cells. So I can assume that the 14S 13P battery would weight around 26 pounds... But then again, I want to build a box out of 6mm thick plexiglass and also have to add BMS, fuse, shunt, Powermeter and 2 Ce...
by Matador
Aug 13 2016 10:56pm
Forum: Battery Technology
Topic: Another No Solder/Weld 18650 Build (Updated 03/09/2014)
Replies: 344
Views: 62919

Re: Another No Solder/Weld 18650 Build (Updated 03/09/2014)

I still have to wire the BMS, a fuse, 2 cellLoggers, a shunt and a PoweMeter (V, A, W, Wh). I'll also do a thick plexiglass casing for the whole thing afterwards. Today, I just wanted to try my ebike for the first time. It was a blast. I also want to say hi to Marcel, another e-biker that I met on S...
by Matador
Aug 13 2016 10:37pm
Forum: Battery Technology
Topic: Another No Solder/Weld 18650 Build (Updated 03/09/2014)
Replies: 344
Views: 62919

Re: Another No Solder/Weld 18650 Build (Updated 03/09/2014)

Hi everyone This is my very first post on this forum. Hopefully I'm posting in the right thread. I was stunned to see all the detailed valuable information available here and all the knowledgeable people! I wish I had found this forum before, as it would have save me some mistakes and trouble in my ...