Alibaba 50 dollars VESC worth it?

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Ryuudan   1 W

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Alibaba 50 dollars VESC worth it?

Post by Ryuudan » Aug 09 2016 8:18pm

So I started to see VESCs being sold at alibaba.com for 65USD-50USD

https://www.alibaba.com/product-detail/ ... 0.0.utuVT2

I'm very concerned by the size of those capacitors, but considering I had to pay around 170 USD(with 45USD just for shipping) for my VESC from Ollinboard and now it's 165 USD without the 45USD shipping.

I don't want to pay 210 dollars for a VESC although I do want to part of it going to Vedder, I might buy from china and donate to him anyway.

Has anyone tried them to see if the quality is the same? I really doubt, but do they work at all?

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sl33py   10 kW

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Re: Alibaba 50 dollars VESC worth it?

Post by sl33py » Aug 10 2016 12:24am

Yikes! I remember the pain folks went through with the first round of the Enertion VESC - where the factory substituted "equivalent" components (in other words - less expensive ones). Tons of headaches!

I wouldn't sweat the caps at this price - i'd buy one of the bigger ones like older 4.7 hardware had (vs the current 3 on PCB) and swap them. You want the cap as close to the PCB as possible anyway. Those tiny ones at the connector are not going to do you much good.

For $50-60 - it's almost worth a try (for science). But i wouldn't expect much - maybe for a 6s or 8s setup, but even that might be doubtful.

who's going to try and let us know?

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Ratking   1 kW

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Re: Alibaba 50 dollars VESC worth it?

Post by Ratking » Aug 10 2016 4:32am

I wonder if they use original mosfets, I would really like to buy one and see. I need three ecs's for the project, but I need them to work within the specs given.

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Vanarian   10 kW

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Re: Alibaba 50 dollars VESC worth it?

Post by Vanarian » Aug 10 2016 9:01am

I can't speak on the quality of these, BUT I can say two things :

1) I have been ripped off by bad quality of the Flier VESCs unfortunately and paid the price;

2) I also have been ripped off by Marcin Sleziak after he offered to me to service my VESCs (not free service of course), because the Flier VESCs were damaged even before using them. Bad soldering, some fried components, some fake components and list goes on.

Try for science if you're prepared to eventually lose 65$. Else get a true VESC from a trusted person like I did afterwards. At least now I have something great and quality made. Personnaly I don't want to be ripped off anymore.

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-+AT-One project : electric inline skates - no remote, hub motors, one frame for various wheel sizes & quasi-universal boot mount

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mccloed   100 W

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Re: Alibaba 50 dollars VESC worth it?

Post by mccloed » Aug 10 2016 10:34am

I actually purchased a couple from these guys. Should have them next week. I'll let you know how they are.

Ryuudan   1 W

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Re: Alibaba 50 dollars VESC worth it?

Post by Ryuudan » Aug 10 2016 10:36pm

that would be great mccloed, please let us know.

I fried one of my VESCs and need 3 more, and don't have the money to buy them at 200 dollars a piece.

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sl33py   10 kW

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Re: Alibaba 50 dollars VESC worth it?

Post by sl33py » Aug 11 2016 1:49am

Ryuudan wrote:that would be great mccloed, please let us know.

I fried one of my VESCs and need 3 more, and don't have the money to buy them at 200 dollars a piece.
DIYes i think has his at $99 (pre-order so you'll have to wait a bit to get). Just FYI.

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Re: Alibaba 50 dollars VESC worth it?

Post by Njakts » Aug 11 2016 2:10am

I found this:
http://www.ebay.com/itm/VESC-4-12-Motor ... SwZ1BXe6Ct

someone has done some major HW changes..

Ryuudan   1 W

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Re: Alibaba 50 dollars VESC worth it?

Post by Ryuudan » Aug 11 2016 6:12am

I've seen the heatsinked VESC on alibaba as well. it might increase durability if it's properly done. problem is if they downgraded mosfets to actually need heatsink.

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Ratking   1 kW

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Re: Alibaba 50 dollars VESC worth it?

Post by Ratking » Aug 23 2016 9:15am

mccloed wrote:I actually purchased a couple from these guys. Should have them next week. I'll let you know how they are.
Any update? I am about to buy a few myselfe, but would like to get your opinion first

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mccloed   100 W

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Re: Alibaba 50 dollars VESC worth it?

Post by mccloed » Aug 23 2016 11:46am

Always delays! They are actually shipping them to me this week.

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miffi   100 µW

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Re: Alibaba 50 dollars VESC worth it?

Post by miffi » Aug 23 2016 11:57am

It was inevitable that poor quality clones would happen. Looking forward to seeing if the alibESC works. :pancake:

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mccloed   100 W

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Re: Alibaba 50 dollars VESC worth it?

Post by mccloed » Aug 25 2016 11:38am

Got the VESC yesterday. First look: Looks cheap. I'm not sure what kind of DRV is normally used but this has the Texas instruments logo on it. They also used vedders capacitor pcb with the three capacitors. The phase wires are only 16 gauge and the power wires are 12 gauge. They heat shrinked it, so I had to cut out the USB and sensor wire connections. I connected it to my computer and a motor and it works fine. They used FW version 2.16 and HW version 4.12. Next step is to ride with it, which I'll try to do this weekend. I'll try to post pics up later today.
Last edited by mccloed on Aug 26 2016 4:27pm, edited 1 time in total.

rmrf   10 W

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Re: Alibaba 50 dollars VESC worth it?

Post by rmrf » Aug 25 2016 12:46pm

mccloed wrote:I connected it to my computer and a motor and it works fine.
Image

artteth   10 mW

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Re: Alibaba 50 dollars VESC worth it?

Post by artteth » Aug 25 2016 6:12pm

mccloed wrote:Got the VESC yesterday. First look: Looks cheap. I'm not sure what kind of DRV is normally used but this has the Texas instruments logo on it. They also used vedders capacitor pcb with the three capacitors. The phase wires are only 16 gauge and the power wires are 12 gauge. They heat shrinked it, so I had to cut out the USB and sensor wire connections. I connected it to my computer and a motor and it works fine. They used FW version 2.16 and HW version 4.16. Next step is to ride with it, which I'll try to do this weekend. I'll try to post pics up later today.
before ride look under microscope or lens on the drv legs
it can be many small solder junk
like this
looks ok but
Image
Image
Image
Image
if it like that you need to clean it or it will be short in drv and vesc will dead

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mccloed   100 W

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Re: Alibaba 50 dollars VESC worth it?

Post by mccloed » Aug 26 2016 12:52pm

Good call. I'll check before I ride. Here are some pictures:
IMG_2126.JPG
IMG_2126.JPG (101.39 KiB) Viewed 3893 times
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IMG_2127.JPG (107.32 KiB) Viewed 3893 times
IMG_2128.JPG
IMG_2128.JPG (107.32 KiB) Viewed 3893 times
IMG_2129.JPG
IMG_2129.JPG (89.06 KiB) Viewed 3893 times

artteth   10 mW

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Re: Alibaba 50 dollars VESC worth it?

Post by artteth » Aug 26 2016 2:55pm

don't use foc on your vesc
you have missed sad caps (red)
and make photo or write what written on the shunts (blue)
Image
Image

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mccloed   100 W

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Re: Alibaba 50 dollars VESC worth it?

Post by mccloed » Aug 26 2016 4:10pm

Thanks for the heads up! Wasn't planning on using FOC, but now at least I wont blow them up if I decide to.

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Re: Alibaba 50 dollars VESC worth it?

Post by mccloed » Aug 26 2016 4:26pm

looks like the shunts say WSLP2726 .0005 OHMS 1% 1622

artteth   10 mW

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Re: Alibaba 50 dollars VESC worth it?

Post by artteth » Aug 26 2016 5:05pm

mccloed wrote:looks like the shunts say WSLP2726 .0005 OHMS 1% 1622
ok
good
for this shunt you need special wrimfare for vesc for 0005 shunt

artteth   10 mW

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Re: Alibaba 50 dollars VESC worth it?

Post by artteth » Aug 26 2016 5:09pm

artteth wrote:
mccloed wrote:looks like the shunts say WSLP2726 .0005 OHMS 1% 1622
ok
good
for this shunt you need special wrimfare for vesc for 0005 shunt
and you can try insane settings (my settings- motor 200 amps battery 70 amps absolute max 240)(if i set battery higher ill get abs over current fault sometimes (will try to reprogram to set bigger abs value (now in bldc tool 240 is max that you can type in the window)

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mccloed   100 W

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Re: Alibaba 50 dollars VESC worth it?

Post by mccloed » Aug 26 2016 10:52pm

So am I ok to use without sad caps as long as I don't run it in FOC? I have caps coming next week.

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Re: Alibaba 50 dollars VESC worth it?

Post by artteth » Aug 27 2016 3:23am

mccloed wrote:So am I ok to use without sad caps as long as I don't run it in FOC? I have caps coming next week.
mine vesc without sad caps too
try foc
didn't fry my vesc but tooooo many abs faults
if you will not use it in insane mode on the limits (like me) you can try
but same current settings and in foc i get faults sometimes but in bldc no faults at all
and buy (if you can) spare drv chips (for spare)

Ryuudan   1 W

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Re: Alibaba 50 dollars VESC worth it?

Post by Ryuudan » Aug 27 2016 6:39am

@mccloed can you post here the link where you bought that VESC? so we can try same vendor or avoid it if something goes wrong.

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Ratking   1 kW

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Re: Alibaba 50 dollars VESC worth it?

Post by Ratking » Sep 05 2016 9:14am

mccloed wrote:So am I ok to use without sad caps as long as I don't run it in FOC? I have caps coming next week.

Do you have any wayt of logging temperature and current on the VESC? I would like to know how good it performs before I pay for three of them ;)

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