How did you solder the aluminum battery tabs after you broke apart the spot welds? They are aluminum and hard to solder.
the tabs were not spot welded they were soldered. I desoldered them one by one, and then soldered short pieces of 10 gauge wire between each cell. I used a 1.6mm 60/40 tin/lead 5 core 362 flux solder and a high quality weller Iron with a 5mm tip (if exact details are your thing)
for what Its worth I was going to solder a triple strip of tinned veroboard between them all, but decided that 10 gauge was more appropriate, if not overkill.
I guess you were lucky. My 12AH, 6S was spot welded. I just made a massive cold solder joint when I split the lips into two 3sās.
lots of flux mate, lots of flux.
The multistar 12000 is only 2c. Too bad. The 10000mah though great deal. At 10c and 10000mah thatās great. If u didnāt have a job u could probably sell soldered packs of those.
I have ordered some of that blue shrink wrap from ebay too, so it will look like a professional product when Iām finished.
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@lowGuido, Thinking about ordering 2 of these from HK since they are on sale for $50 USD ea. Did you do this to both packs?
Yeah man I did both packs. Except on the other pack I put the balance leads out the -ve side so when I stack themi have the balance leads on the same side of the board.
10 posts were merged into an existing topic: Low Guidoās hack board. For Science | now with push assist
So after a lot of consideration about pros and cons of carbon fibre I have decided to make a maple carbon fibre hybrid deck.
I plan on putting another layer of carbon on the bottom too.
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That is so awesome, i was planning on doing the same thing only with a space cell in there. How many layers of carbon fibre did you use? And did you test the strength already? I thought about reinforcing the board by adding small alluminium bars/strips if the flex is to much.
there is 2 layers on the top and I plan to put 2 layers on the bottom as well. I stood on it today and it takes my weight but I plan to strengthen it with more carbon anyway. I have also thought about the possibility of aluminium strips, but I donāt think it will be necessary.
That looks awesome, man! It looks quite thin. Are you going to be able to service the components once you apply the bottom layers of carbon fiber?
I intend to be able to open it up and service if necessary. I have a plan. Iām just not sure what it is yetā¦
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Thatās awesome! For your access lid, I could envision a hinged lid or two (for battery and electronics) held down by clevis pins, like a race car. There would be a small 1/4" step down in the wood around the perimeter of the enclosure and the carbon would wrap down and cover that step, stopping at the inside edge of the enclosure. Then, on that step would be a thin layer of rubber or neoprene gasket material that the lid would seal against, with pins to hold it in place. The bottom would basically look like flat carbon with a flushed, hinged hatch that would be mostly waterproof. I donāt know if that makes sense, but thatās what I would try if I had your skills.
I would remove all jst plugs from the vesc, then also solder a external USB jack and imbed it into the wood, then I would ask some one for confirmation but Iv been running 2 VESC off of 1 cap pcb as Iām limiting both vesc to do less then some are running on 1.
Iād like to keep both my cap boards. in fact fitting the VESCās isnt really an issue I allowed space for them. the things I havenāt yet allowed for is lipo alarms. (of I suppose I could just rely on the VESC low voltage cut. thats probably easier) the beauty of having wood in the build is that I can just route out holes where I need to. Iām thinking about having a loop key somewhere behind the front truckā¦
I love this, this was my first inclination when I stared looking into esk8
How did you apply the CF without it caving into the hole? Did you use a vacume press Iād love to see a video of your process