Iâd go with like 4.5mm - basically the smallest you can get away with.
It really depends on the application though. If youâre relying on the screw holes as location holes too, you want them to be tighter than if youâve got some other kind of registration features.
I put 24 m4 screws in my non-flexible board. The holes in the enclosure are 4mm. I need some slack because itâs almost impossible to have them all alligned as they are now. 
Ehh, for an enclosure 5mm should be fine.
Just saying how I have mine set up. YMMV.
I tend to agree with you, but Iâm just a new guy.
are bigger motors more energy efficient? Thinking specifically a 6355 vs a 6374, and which would be more efficient for a street build (and riding only on roads]?
Cells have burst amp ratings for discharge e.g. 10A constant, 15A burst for 10 seconds, but what about for charge?
Can it work the same, taking the above example maybe 4A constant, 6A burst for 10 seconds?
Why do I ask? Well, because brakes. Mostly we feather our brakes, but what if we want to lay it on and stop rn.
If I had a 10P pack of the above, would it be okay to set Regen at -60A max, knowing I wonât use it fully most of the time?
It depends on the load. Each motor has an efficiency curve that starts at zero at no load and rises to whatever the peak is, then falls again when overloaded. If youâve got a small motor that is being pushed past its maximum efficiency point, then a larger motor will likely be more efficient.
However since a larger motor will have proportionally more parasitic losses, going bigger isnât necessarily better if youâre not actually utilizing the extra headroom it affords.
TLDR if youâve got a 1Kw motor and go up to a 1.5Kw, it wonât do you any good if youâre only running either at 500w.
Yeah, but most cell manufacturers donât test/rate for that behavior.
A couple seconds of higher charge current is fine, as long as itâs not right at full charge already.
As in, donât go down a hill if your battery is full. If you live on a hill, set your charger a volt or two low to give yourself a bit of buffer.
Lots of cells have a fast charge rate of 2 or 3C thatâs fine to charge long term, just lowers the life of the cell. Graphenes/high performance lipos can be charged at 10-15C without reducing their life too much.
So, hereâs the thing. If the cells arenât getting too warm, and you arenât over volting your cells, I donât think youâre in any danger. Youâre just reducing life cycle (worth it for better brakes). From what Iâve seen, 25-50% of the real C discharge rating has been reliable. I tune all of my skates to where I can lock up the wheels on full brake.
awesome.
mine can⌠but will i use it? i donât know. My battery could do 210A max discharge but since i have my diebiems for charge and discharge, i can only use 80-90A so 40 per esc. but if one day i bypass the diebie then yea, double the oomph
210A battery series connections are some pretty serious ones
yep haha. built like a tank by @tinp123. but as i said i doubt i need that, especially with my average weight of 65kg with gear.
0.2mm thick, around 120mm wide and only 25mm long nickel for series. if that would be good enough for continuous 210A, I donât think so. but impossible to draw as much.
some efoil builders use 6awg wires between esc and battery, and battery can give up to 150-200a max. They donât like any heat or losses in wires.
for mountainboard, I believe 10 awg is enough.
agreed! but built like a tank nonetheless for our purpose 
awwww guys
I know this isnât quite the right place, but I want to adress as much people as possible, also I donât really know where a better suited place would be:
I bought a defective 4.12 VESC from AliExpress. I confirmed receiving the order which sadly starts a 15 day countdown after which you canât open a dispute anymore.
I reached out to them anyway, thinking it was just a waste of time - I really didnât expect anything from them.
But!!!
No matter how this will turn out - Iâm really happy with this experience. Remember - they are doing this voluntarily now! I will hope for the best 
All theyâve done so far is reply to you. They wonât be replacing your unit, they will string you along then blame it on you. I wouldnât bother
I had to file an Aliexpress dispute only once for a defective pair if cheapo bluetooth airpods.
Although the seller was an asshole, aliexpress stepped in and decided completely in my favour.
This is different though since the 15 day limit has expired but you never know.
