18s 150A
1 Like
Nice… Wonder around how much it’ll cost.
same… ima use it as a ebike esc as well
E-foil and electric surfboard. Lol, ok, no more derailing the thread.
1 Like
that esc would really open up for different cells we could us with higher mah capacity and less discharge. as you know.
derailing is the fun part.
2 Likes
@uigiroux spec’s are still changing but I will try to keep up with 18s as baseline 
Also I am redoing the whole schematic accommodating protections and etc, so MOSFET’s wouldn’t blow and etc. Also some new features like field weakening for higher RPM at the same voltage from same motors Also better sensorless application and brake-resistor and many more goodies But now I need to write software fully, as it isn’t the same base platform as before so VESC will not be able to run on it
EDIT: for who are curious what is field weakening here is demo from someone on youtube 
3 Likes
Cool, thanks for the info. Still learning about battery tech…
Cheers!
1 Like
@Kug3lis field weakening would amount to two things am i right: higher top speed and also greater efficiency in the low speeds as the motor kv would be still low right?
The cheaper they are, generally the more ‘aspirational’ their stated specs are. And yea, cooling. They way they heatsink the mosfets are to put them at the edge of the circuit board and use a metal clamp to clamp them to the inside of the aluminum case. The cases are thin aluminum plate so it doesn’t work very well, If you start to push them anywhere near their stated specs, they get hot as hell and fail pretty quickly. The first few I used, I ended up using heatsink adhesive to glue big heatsinks over the top of the hot spots on the case. Pulling roughly 12-14A, worked great for about 2 years, then fried. Eventually I just started using better quality PS’s and overspecing them a bit. Meanwell is a decent brand, have half a dozen of those that are running for up to 3 years 24/7, no heatsinks. I am however running them at less than 70% max spec.
1 Like
ive had good luck with my cheap ones and only one was faulty and right away could tell as it smelled and then a big snap. they replaced it with a higher rated one and been good since. ive had meanwells also. biggest problem for me is breaking them from dropping them. definitely worth mounting them to the wall or ceiling with a long charge cord so they dont fall over. ive broken at least 4 that way! they’re not too hard to fix if you know what youre doing.
Dude maybe 3D print some bumpers with TPU/Flex?
1 Like
@Kug3lis that sounds like a fantastic ESC your working on! I’ll definitely be ordering a set when you offer them for sale! Do you have an idea / rough estimate about how long it’ll take till you’re finished and ready to sell?
Also, isn’t your design using no drv/dvr chips since they seem to get fried easily from what I understand?
I am surprised that there isn’t any interest in a thicker board routed from the top, like chaka’s. It would be nice to just plugin the cells like hummie is suggesting above.
if it gets any thicker the trucks rub when turning and it starts to feel like youre riding a brick. as it is now it feels like a normal skateboard with nice slight flex
If you’re thinking about it, maybe go this way
- $170ish
- adjustable voltage 35.7v - 44.1v
- will do 14.3a constant current up to 42v (that’s 600w).
- no fan
- durable (looking) waterproof enclosure
- 7 year warranty
- reputable mfg
- designed for street lights or crazy stuff like that
- A suffix means adjustable – there’s a pot for volts and a pot for amps.
But,
- cc/cv supply, not charger, so no termination
- no voltage display
- there’s no model that can do 10s and 12s
A bit less power and not as big voltage range, but a lot less likely to die on you or do crazy stuff. $140 at qty:10 or above hmm… GB? Unfortunately, this series doesn’t have a model that can do 10s and 12s.
I’m so excited to start putting things on this deck. Parts are piled up.
1 Like
What build do you have planned? I can’t wait to get all my parts together for the deck too!
Focbox x2 in cnc case 10s6p from @psychotiller Mounts and 6374 190kv motors from @marcmt88 Abec11 107mm superflys 44° cal base plates with TB hangers
1 Like
One of his. Not sure yet. Placing order tomorrow.
2 Likes