2 posts were split to a new topic: Where can I find the best motor parts?
For me the flex is good. I wanted it fairly stiff as i will have batteries running most of the wheel base, but also to have some flex for comfort. I am only light though (61kg).
Grip tape is pretty good. But i will most likely replace it as i don’t like the logo on it.
Electronics Update!
All of my electronic components have arrived and i have been soldering on the XT60 and bullet connectors.
Tightly packed enclosure. I will be getting a custom enclosure 3D printed.
Had to modify the 3 pin connector as it sat up too high and wouldn’t allow the lid to close.
Still processing batteries. I have been able to speed up my process to about 8 a day. and about 70% are usable cells.
Update!
@Chris_KP I did the wire mod to my SK3. I used about 8cm lengths of black 10AWG Silicon wire.
I think it turned out pretty good. Only issue i had was scraping of the enamel coating on the wire so i could solder to it correctly. Other than that, no issues.
Another Update!
I am still sorting and testing cells. I am going to start building my packs when i have all 78 of them so that i can distribute the cells evenly, to result in even capacity packs.
This pack that i build was just made out of lower capacity cells and is a 6S2P pack. I needed some power source to power up all my electronics to make sure everything was working correctly, and i wasn’t going to use those cells for anything else.
This is basically what my 6 proper 1S13P packs will look like, just with one extra cell in it.
Nice work! I forgot to mention that about the enamel coating. Those battery’s are looking great Im saving up laptop 18650s as we speak!
Will you be selling these? I would love to buy some pre-assembled packs from you! You seem like you know your shit
Probably not, I just don’t have the time to make any more than I need
Well, that’s a shame!
I just noticed that you have a quanum transmitter. Well i had this one too and it is very bad…honestly it is crap. You should better buy a GT2E or GT2B (older version) because it is much better.
With the quanum transmitter the binding is hard. It takes just soooo long. Sometimes i need to rebind it to get it working…Since i used my GT2E i will never change my transmitter. Maybe i use sometimes a nunchuck or steez but i dont use this transmitter voluntary.
But this is just my opinion.
It is almost instantaneous, one of the easiest remotes i have every had to bind.
I haven’t had any issues with binding on my remote as of yet. I have tested the range and its awesome.
May have just been yours.
Also, IMO the GT2E looks like shit and is too bulky. the Quanum is a lot more slimline and compact.
Well… maybe? I dont know but i did read some people hating this transmitter as well… But if you are happy with it stick with it
That was the reason why i bought the same transmitter. But the GT2E feels like it has wider pulsewidth and is much more accurate (for me). But i am going to print the GT2E custom enclosure and then it will be the perfect transmitter ?!
Hi Sean Really like how you’re putting together the battery packs. I also have access to used laptop batteries, and am considering doing something similar to what you’re doing. A few questions
- what is your workflow for each cell? discharge, charge to full and log the mAh ?
- how do you know when a cell is bad?
- how are you grouping the cells in each pack?
- will you use a BMS for all this? if so, which one?
Sorry these are many questions but I want to make sure I get it right. I’m probably going to build something smaller, perhaps 8s4p. I’m thinking of 3d printing the cell spacers so I can just line them up first, then solder, then wrap.
thanks
endless sphere > Batteries and battery tech may be useful
I charge every single cell to max. Through the charging process if the cell gets hot or even too warm then i will take it out and put it in the dud pile. Or if the cell won’t charge i will also put it in the dud pile. Once i have enough cells charged up, i connect about 8 in parallel and then discharge them to about 3.3v. I then put them in a charger that charges each cell individually and gives you the capacity of each cell. I write the capacity on the cell and put it in my tested pile.
Once i get all 78 cells i will order them from smallest to the largest that i am using. I am using the 2400mAh+ cells for a different project so for this i am using 2000mAh - 2400mAh cells. Once in order from smallest to largest i will grab equal quantities from each end to make a pack. Each pack is 13P.
Currently i will just have some small JST connectors coming out of each parallel pack and then i will make a harness that i can hook up when i want to charge up the battery. I will be using my iMax B6 to charge my packs. In the future i will probably change the configuration of the cells to probably 10S. When i do that i will buy a BMS.
@monkey32 Thanks, but i don’t need any assistance in making the packs I have been making them for a while.
Very Small Update!
Currently waiting on a couple tools so that i can drill out my mount and get the truck hole to the right diameter to be welded to the truck.
Also made my anti-spark loop with an XT-90S. I also found out that 18650 PVC wrap is the perfect size for wrapping an XT-90S, which is pretty cool.
appologize for not being clearer. that was a comment @macfly777
Thanks Sean for the detailed response. I have 2 LiPo packs right now that I’ll use as a 6s system, but I’m already looking at upgrading it, mostly for greater range.