Let's discuss traction control

How-Tos & Esk8 mechanics
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Found a loose trail this evening and it crossed my mind to try full braking with it both on and off.
Videos first, explanation later


TC off ↑

TC on ↑

First thing i notice is that traction control off almost always means that my wheels lock up and start the smart reverse ramp up time. On this type of terrain braking is also very straight, but previous experiences on asphalt are actually the opposite.

With traction control on, no wheel locks up separately, but there are times when both break traction simultaneously. In general, if one wheel has traction the brakes on the other are lowered until both start spinning again.

The bad part is that there is a consistent bias towards one side when braking with TC on. I suspect lowering the max erpm difference will affect the amount of sliding towards the side, but more experimenting is needed.

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Good experiment!

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Thanks!
I want to see others attempts as well with their own setups

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Weird, I was just about to test traction control off on my ride earlier to see the difference. I’m not reversing at the moment but will still give my feedback on braking feels.

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I would like to know if you experience the bias to one side as well under the default erpm. Also if lowering or increasing this has any effect

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I have never used TC before.

If I hit my breaks all the way my wheels lock up regardless of the terrain. It makes sliding fun but kills my back tires.lol

Are you saying this doesn’t happen if you use TC?

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Completely unrelated but what remote is that? Has nothing to do with this thread so I apologize in advance but it looks cool and I want to explore it a bit.

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What are your braking settings at? Motor and battery

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Here’s everything that might effect it.
12s6p battery
Battery max current 99a
Max brake current -50a
0 on braking. Using Hoyt Puck
190mm wheels
gearing 12t to 44t moon drives
6389 190kv motors

I will say I also use the smart reverse function as well and it can through you off. After sliding/ back wheels lockup, it will release and start rolling again before reversing but only happens if I am slamming the breaks.

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Interesting. I’m at 70 battery and 35 motor and definitely can’t slide to a stop on command. Sounds fun though so I’m gonna have to give it a go.

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trampa wand

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It reminds me of being a kid and slamming the breaks on the bike. who could make the biggest skid mark. lol

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Alright that sold it right there.

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Is there already a thread for longest skid mark? I will be grabbing my GoPro on my next ride.

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So, I have to many scratches on my GoPro. The street skids didn’t really turn out. After watching this I’m questioning what I said. It does feel like it locks up and skids but in the video it didn’t look like that. Not sure. :sweat_smile:

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@BillGordon hands down :kissing_heart:

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Look at my video. Full brakes in both occasions. Tc off does it just like on your board, tc on happens to lock up both wheels but the majority of time acts like anti-lock brakes on a car. I imagine this would be way more obvious on a 4wd board

Vesc wand.
Looks and feels in hand really nice, has about the weight of a flagship metal and glass phone to it.
It is however plagued with joysticks failing left and right. They finally found a better quality one, i’m using a replaced joystick since 2 days ago and so far so good, longevity tests from me take time now

20210515_095914
20210515_0959143000×4000 1.38 MB
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20210515_0959213000×4000 1.37 MB

Edit your videos in mp4 or webm as they play just audio here

But… wheels expensive :c

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my experiance is with TC ON, if i accelerate hard on gravel i just slide sideways (and therefore lose balance and fall).
i don’t brake hard often so idk about that.

TC is only good imo going up super steep dirt tracks slowly (under 10km/h), where taction and torque is key. often you need to go full throttle to go up steep hills as you need the full Amps and therefore it’s very easy for the wheels to quickly accelerate to full speed as soon as you lose traction. This is where TC shines. But for normal riding i’m not impressed. Riding on wet grass just makes me skidaddle sideways like a crab and faceplant.

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On the street for me it’s not required, but good to have for the occasional sand or wet patch, but for my mtb it’s a must, lots of deep sand around me, so without it I end up the ride covered in sand due to one of the wheels going full speed, i also got stuck way more without it on, with it you can modulate the the throttle to keep a constant wheel speed and beat almost all sand pools

I always though that a feature like crawl control like some cars have would be really cool here, would be kind of switching to duty cycle or speed control mode, current doesn’t do that well in terrains that the drag changes quickly, you have to have your finger control really good to keep a constant speed
I meant to test that a while ago but you need a working board for that :thinking:

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Looks like duty cycle control is only available for ppm/pwm remotes unfortunately…

I think this is related to the fact that only one vesc tracks the actual speed while the other makes some kind of calculation between rpm and current until it’s actually equal to the other. On a 2wd you can grab one wheel and the other will slow down to 3000erpm (default), but if you grab the other, the first just shoots off at full speed. I assume from this that on 4wd 3 of them will shoot off if you grab the right one.
I thiiink it was discussed at some point on the stormcore thread? Conclusion was that if all wheels track they would start resonating instantly and do stupid shit and that it’s too much of a headache to even start for now

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