I’m looking at this VESC from Flipsky:
It has a good deal on Amazon. I was wondering what you guys thought about it? It seems like the V2 brings phase filtering (i think?) and other fixes for complains about the previous version. I love the built in power button (no need for an antispark switch).
Any thoughts? This won’t be for esk8, it’ll be something else. However, reliability is just as if not more so important as esk8 (so sudden failures are not tolerated).
I have no experience with these vescs specifically, flipsky however doesn’t have a great reputation in terms of reliability.
If I were in your shoes looking for a reliable, 75v capable, single vesc I’d probably go with:
The skp solo:
Or the lil foccer:
Iirc the solo is based on the lfoc but there are a few key differences
It does seem like we may be coming up on the release of the lfoc V4 if you’re willing to
I run dual flipsky 4.20 vescs. Been going on 2 years. These are probably just as reliable. Its an esc for crying out loud 70% of them all have the same electronics yall. Ive never had an issue with flipsky products especially their vescs and when i did it was MY fault. The reliability all depends on YOU and if YOU program it properly
I’m going to be using up to 100A continuous. So I want something rated for around double that it ensure a safety margin.
The SKP Solo doesn’t seem to meet that (it’s for dual motor?), and the FOCer seems… janky?
If not the Flipsky VESC, I’m also looking at:
However, it’s much more expensive and a touch bulkier than the Flipsky. However, MakerX does have a better reputation than Flipsky.
I’ve personally had no issues with the Flipsky 75100 I purchased before (other than me breaking off the USB-C port accidently…). This 75200 Pro V2.0 looks solid built, but my electronics knowledge isn’t too great.
I’m still on the market for a highly reliable 12S 200A ESC if anyone has any recommendations. If not I’ll decide based on other factors.
Maker x dv6s is probably your best bet.
don’t buy those toy full of features that failed to gives you security and reliability
Hey all
I hope everyone is doing well
We have a 72V 6kW 70-pole PMSM. We recently purchased a sine-wave motor controller from Golden Motors (EZkontrol motor controller model: EZ-B144400) and it was not able to run the motor. It finished the “self-learning” and even during that it wasn’t able to drive the motor with enough power. After the self-learning phase, upon giving throttle, the motor would just rotate very slowly, and produce a lot of noise. Their team couldn’t really help much. We can’t really do much with the controller either, there’s no firmware support - they just have an android app with a some parameters exposed.
Our motor is not damaged of course, it runs fine with open-loop ESCs such as the FLAME ESC. We are assuming that these off-the-shelf closed-loop controllers are designed specifically for the more popularly used 4-pole brushless motors. We have an old 48V 4-pole BLDC and the EZkontrol motor controller from Golden Motors was able to run it easily, on the very first go.
We concluded that it could be to do with the high pole-pairs of our motor - 35, i.e. 70 poles, that caused this incompatibility.
Now I am looking into VESC-based ESCs and the Flipksy 75200 Pro seems quiet promising. I have this lingering doubt though, if even that may fail. With the EZkontrol controller, we still don’t exactly know what didn’t work and given how it’s just a black box at this point, there’s no way to find out either.
I hope someone here can give some helpful suggestions. Here are the motor details:
If someone has ran a high pole-pair motor using a similar VESC-based controller, do share your experience as well!
Thanks for taking the time to read! I hope I get some good insights!
Best Regards!!
Reminds me of when we were repowering my mates mobility scooter, 20S12P running a kunray or similar knockoff motor.
We tried a flipsky 75100 but blew it up before getting out the driveway. Then old mate ordered a Kelly controller which is quite basic. The trapazoidal firmware was archaic, and the sine wave firmware much better but still basic with insufficient documentation.
We had countless problems with the controller losing rotor position. I had a look at the hall effect sensor outputs on an oscilloscope and found that the the rotor magnets were fringing, and we had a reverse polarity pulse on each side of switching on.
So, we got the angle grinder out and removed a bunch of material from the laminations between the magnets. Wasn’t perfect, but it become usable and proved my theory was correct.
I’m pretty sure the original shitty motor controller was designed to work the shitty motor. The new kunray motors, from the official ali kunray store have been revised and the rotors fixed this problem.
Got a link to the motor you’re using so we can see what it looks like in the flesh?
What’s the application? I’m having trouble relating to a continuous 6kw. I’d bet my left nutsack on a 75200 not being able to empty a 1kwh battery in ten minutes without vaporizing in the process.
Damn, that is really interesting, and reassuring too lol. And sorry for the late ass reply, I thought I’d get a notification on mail or something if I got a response 
So, in our case, this 48V BLDC wasn’t manufactured by these Golden Motors guys, so their controller does seem to work, just not with our particular 72V motor.
Only differentiating factor I see is the number of pole-pairs, but there’s no solid theory behind that, ofcourse. If I had a motor with some intermediate number of poles, like 24 or something, we could see how it performed with the controller and say what’s what with a little more confidence.
And our application is that we are trying to build an electric scooter, and this motor has been designed by a motor designer we hired. It’s a hub-less PMSM with the specs I mentioned. I will DM you a pic.
About your last point, the Flipsky 75200 is rated at 75V/150A, so for a 72V pack, at 6kW (which is also if the motor is fully loaded), won’t it just draw 83 A? It can’t take even that?
Either way, I doubt we want a continuous 6kW draw, for now atleast. We just want to move the scooter by like 30 or so meters.
But even before that, I just wanna see the damn motor rotate (smoothly, and with a few 100 RPMs) on the test bench, with a DC supply. And the DC supply is quite small, rated at 60V, 20A.
What do you think, can it work?