I just contacted LLT Power.
As you say, it seems that you need to rewrite to the 14s setting using the PC module.
Thank you, it turned out that I could fix it.
Does anyone know the true interior dimensions of the MKiV Monster Box? Trampa’s site lists the “usable dimensions” but I assume that is accounting for the space that would be taken up by the VESC’s. I have a customer who is doing external VESC’s, and wants to fill the box with as much battery as possible.
We have it moddled, if Queron doesnt answer I’ll grab it for you when I’m on the computer tomorrow morn!
West System 650
(not for skinning)
Thanks man! I really appreciate it
So I recently set up BMS in my battery enclosure.
For me the whole point of of the BMS was to simplify my charging process( vs. doing the whole hobby charger ritual).
However, leaving the batteries in the enclosure instead of putting them in a lipo bag every night makes me uneasy.
Long story short, I want to “fireproof” my enclosure/lipos the best way I can. I have a small lipo bag that fits both 6s lipos that I was going to put into enclosure. The fitment didn’t work out.
I think wrapping/encasing the individual 6s lipos is the way to go. Right now I am considering wrapping my batteries with aluminum tape to offer some small level of protection
Would love to hear some input from you guys.
I would not advise this. The chances for abrasion causing a short seems really high, and I dont think you are actually gaining any fire protection. Rather, you would just be making a pressure vessel for the LiPos to then burst and create an even worse explosion.
My understanding of LiPo bags is that they are supposed to be fire-resistant enough to give you time to get your LiPo’s outside if they melt down. It’s not something I would want happening in my house, especially overnight while sleeping.
@rafaelinmissouri took some pretty cool measures regarding battery fire preparedness, maybe he can chime in with some tips
Basically I think that trying to turn your enclosure into a LiPo bag is gonna be a crap chute, and if you want more peace of mind, get a LiIon or LiFePo4 battery
250x190x74
this
If you’re worried enough to do that, then just go LiFePO4
Yeah I was actually thinking about this. I was considering making a way that the fire would at least be vented more safely.
I just have it on my mind because I’ve been seeing a lot stories about lipo fires lately
I had also considered the shorting is. Everything is insulated well/thoroughly and I was going to putta electrical tape or some kind of rubberized coating over the tape
electrical tape – NO
rubber – NO
fishpaper – YES (for abrasion resistance)
polyimide tape – YES (for temperature resistance)
Rubber can be used for padding, especially AROUND the battery, but don’t use it inside the battery for insulation.
Yeah I was actually just looking at kapton tape
fishpaper is expensive and available from 145ptags.com but it works very well.
Size better for 18650: https://www.145ptags.com/product-page/cg100550ft-fish-paper-roll-5in-x-50ft-std
Size better for 21700: https://www.145ptags.com/product-page/cg100650ft-fish-paper-roll-6in-x-50ft-x-0-010
For reference, a “mil” is 0.001" = 25.4μm = 0.0254mm
Im using vesc tool, and I am using what i believe is the 4.20 dual flipsky esc (the one joined together) and im using the vesc tool to program it. I am using 2 ppm inputs for the escs, and whenever i try to setup the input, it uses one of the ppm inputs for both motors. I know this works becuz i did it a year ago, but i completely forgot what voodoo i did to make it work. If anyone can help, it would be appreciated. I know this isn’t for a skateboard, but this is the best place i think i could find info.
Disable canbus control between the vescs?
On the “master” ESC which is seizing control over the other one, uncheck “Multiple ESCs Over CAN” option in the “App Settings” > “PPM” > “General” menu
Thanks Q!
I bought two Torque bldc escs for a dual motor setup with their 6374 190kv motors and offroad tires. I was planning on putting the escs in a aluminum enclosure but then I started reading things about them overheating. Should I be worried, is there a good way to cool them? I haven’t decided on a battery setup yet but I was considering 12s lipo or 12s 2p lion. Any help or feedback would be greatly appreciated.
There is no effective way to cool the 4.12 series VESCs, the FETs dump heat into the PCB and not into a nice externally-coolable surface.
Keep the “battery max” at 20 - 22A or less (per ESC) and you won’t have any problems. (“motor max” can be way higher, 80A is probably fine for those motors)
As soon as you turn it up past that, you’ll probably start to have problems.
fresh and direct air.