Vesc thinks I'm going double the speed that I'm actually going?

ESK8 Electronics
#1

Hi,

I installed a Metr Pro last week and when trying it out I was going super slow. I played around with profiles and came to the conclusion that I only had to change the max speed/ERPM to actually go faster or slower.

With GPS I know my top speed is 45km/h, while the Metr app shows ~90km/h. If I set the max speed to 50 with the Metr app, I’m only going 25km/h etc…

What would be the cause of this? I checked the gearing settings and wheel diameter and those are correct.

My setup is:

  • Flipsky Dual Vesc 6.6
  • 10S4P
  • TB 6355 190kv
  • 14T/36T
  • 90mm wheels
  • Running Sensored FOC mode
  • Both the Vesc and Metr are up-to-date

Any tips? Thanks in advance.

Ninja edit: Someone mentioned that it could be related to having a dual vesc?

#2

Its because you have wrong settings in metr, go: Settings>Motor and select correct wheel size and gearing I suggest you also go to battery and choose correct Voltage your battery have.

2 Likes
#3

Well, I think you are right. I remember setting it correctly but the gears were both on 1 instead of 14 and 36 but it probably didn’t save?

I hope this is the simple fix, I can test when I get back from work.

1 Like
#4

Unfortunately that was not the fix. It still happens.

Dumb question maybe; under Settings>Magic I have “Dual data” turned on. Should that be on if I have a dual VESC instead of 2 seperate ones?

#5

I think so, but best is to ask @rpasichnyk

#6

What did you put for the setting “Motor poles”? It should be 14 for your motor

#7

It is set to 14 poles indeed.

#8

Turning off dual data did the trick, speed is normal now.

Thanks @mackann and @ARetardedPillow for your input.

1 Like