Help! the motor can't handle the board weight


recently i’ve build my first electric skate but something is wrong, if i put the skate on the floor i can listen the motor but the board doesn’t move forward, but if i flip up it the motor is working and the wheel is spinning fine.

i put two lipo batteries 5500mah 11.1v 35c etc in series and both are fully charged.

the motor and the VESC are from enertion, i bought this kit

the VESC has the default setup, i didn’t change anything.

i’ve recorded a video, as you can see if the wheel don’t have any weight on it it works ok, but if i put only my hand without pushing the motor doesn’t have power to spin the wheel.

if i put the board in the floor and i push it a little bit with inertia it moves slightly but it does not run so fast.

i don’t know what is wrong…

  • the batteries are not powerful enough?
  • the VESC default settings are wrong?
  • the cables to connect the two batteries in series with the VESC are 14 AWG not 12 AWG maybe this is wrong?
  • the Torque Belt has te be very hard-tight?

any idea? please some help

please show us your VESC settings.

Have you done a Motor detection in the BLDC TOOL ?

22v is perfectly fine, many people run that with a VESC. A higher voltage will give you more power / top speed[quote=“miquelcamps, post:1, topic:8053”]

  • the cables to connect the two batteries in series with the VESC are 14 AWG not 12 AWG maybe this is wrong?

[/quote] 14AWG should be fine. [quote=“miquelcamps, post:1, topic:8053”]

  • the Torque Belt has te be very hard-tight? [/quote] The belts looks a little lose, buy I cant tell. You dont want it to be too tight or the motor will have problems. Some pictures would help to decide if the belt should be tightened or stay as is

I don’t know how much resistance you’re applying to the wheel, but maybe you need to fix the motor pulley to the motor? Either a keyway or a grubscrew, i think its called.

your belt is far too loose and you have to do a initial motor detection with your vesc

sorry i’m noob, i’ve installed BLCD tool on a mac, i plug the vesc with the computer, can’t see it in serial connection of BLCD tool, i’ve to install some firmware or something?

i’ve connected the vesc to the batteries and the motor, the blue light is on.

i’ve to do something with the firmware folder?


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Just push connect, if it does’t work try the refresh button, then you should be able to see the VESC a connect to it.

also, I strongly suggest that you read on the basic of the vesc before even riding it.

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the vesc is not a plug and play tool! you have to set it up, or you may fry it!

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it’s weird i’ve used a mini usb-usb cable that i use to charge the gopro but it doesn’t work with the VESC, tomorrow i will buy another cable, i hope it works… BTW thank you

Gopro uses “micro” usb, vesc has “mini” usb

I used the ps3 wire that charges the controller. Worked perfectly from mac to VESC

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my enertion vesc has a micro usb like gopro, but it’s weird my pc doesn’t recognize the vesc

Try a different cable. Your belt tension is way to loose, it looks like it is skipping most teeth.

Another point that I don’t think was mentioned is that you need to calibrate your remote/receiver with the Vesc using the bldc tool.


finally with another micro usb cable my computer detects the vesc in the BLDC tool, i followed some VESC setup youtube videos and i tensed the motor belt, but my board can’t move.

i think that the motor goes a little bit faster than before, also i tried to get on the board and push but it’s slow like a turtle.

i repeat, my setup is the following motor and 2x batteries connected in series 5500mah, 11.1v, 35c both full charged

i attach you some BLDC tool’s screenshots if someone can tell me what is wrong?

this is my controller setup flysky FS-GT2B

ST (down) TH (down) ST.TRIM 0 TH.TRIM 1 ST.D/R 100


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Have your run motor détection?? Are you setup for sensor or sensor less??

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