Hello.
I live in Norway, and here all boards that CAN go above 20 km/t is illegal. I have seen the vesc tool, and it looks pretty advanced.
Is there a way to lock all your programs to 20 km/t in case i get pulled over? So if they try to switch programs it will still go only 20 km/t? Hope someone knows, or have a decent solution. 
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You need to change the âMaximum Duty Cycleâ to some amount less than the default 95%
AND THEN make âDuty Cycle Current Limit Startâ about 5% less than that.
Examples:
Full speed:
- Maximum Duty Cycle 95%
- Duty Cycle Current Limit Start 85%
Half speed:
- Maximum Duty Cycle 50%
- Duty Cycle Current Limit Start 45%
Low speed:
- Maximum Duty Cycle 25%
- Duty Cycle Current Limit Start 22%
edit 2023 March: donât do this, this method also has problems. Use the profiles and realize they wonât limit your speed in all circumstances
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So, when i press a button on my remote, with these settings, it will be impossible for someone to start it and change to full speed mode? Iâm not sure i understand. Or⌠Iâm very sure i understand nothing.
Yes, without fully reprogramming the vesc, the board will be speed locked to whatever of the above profiles you have set it to.
What remote do you have? If there are speed modes on it, set the âmaximum duty cycleâ and âduty cycle current limit startâ to values that makes the fastest speed mode top out at 20 km/t.
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I dontât have any yet. I have deck and complete drivetrain from BN. Missing battery and esc and remote.
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Personally, Iâd calculate my theoretical top speed and limit the 2 variables discussed above to coordinate with your desired speed limit.
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That, or just run it unloaded on the bench and then adjust the percentages empirically. Remember unloaded it will typically spin faster than loaded, not sure precisely how your laws are worded, or if that matters or not. A police test would seem likely to be unloaded.
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thats slow as shit, maybe build some sort of quick relase battery on the remote and eject that mf if you get stopped
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It says i canât go above 20 km/t, and it should not have options to switch to faster programs by app or buttons.
So i think i need to do something that just locks everything in vesc to max 20 km/t if/when i get pulled over.
Boardnamics M1 dual drive helical, with 107mm abec, and 6384 motors. Donât know the top speed, but way above 20 km/t it will be, Iâm sure.
Iâve assumed this whole time you mean 20km/h or âkilometers per hourâ.
The duty cycle fix I mentioned will do exactly that; no profile changes should be able to override that.
You can do theoretical math all day â but it might be easier to run it on the bench, calculate top speed, then adjust the percentage that way. Plus, motor Kv is usually +/- 10% tolerance at the factory.
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I see i have to go to vesc tool school. I see what you write, but Iâm still not able to understand it.
But your answers help alot. Now atleast i know about duty cycle fix etc.
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Commenting in a thread you know little about
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dude keep your commentary in your head dude, please stop barging into threads and derailing them.
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lol Did you even read the post? OP wants to be able to âlimitâ the speed if theyâre pulled over not before hand.
As for the efficacy of doing so, you should be capable of doing this trick with the VESC Tool via Bluetooth; Or I wonder if you could write a config to the VESC and have a way of flipping profiles via CAN bus? @b264 are profiles even a thing on VESC Tool yet/at all (never looked myself)? answered my own question ( https://www.youtube.com/watch?v=Y8lYqoNxMgE)
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That would probably work except
Idk if this is possible
Please tell this to Lacroix and have them remove there damn video.
Its videos like the above that lead people to believe they should adjust ERPM.
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I doubt the police will have bought the vesc tool on androidâŚ
Otherwise using a metr should lock everyone out except you. I donât think they are allowed to check your phone for âEskate Appsâ
If they check for bluetooth, get a metr and change the name of your board to âIphone 5Sâ or something
Their pig brains will be too slow for this simple trick, all police will hate @rpasichnyk 
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I agree that itâs probably not necessary to make it impossible to change the max speed back, I was just pointing out thatâs what was asked for.
Yeah metr profiles are perfect for this.
You can set up a 20km/h profile that is the default profile for when the board switches on. You can then change the profile ONLY from your mobile phone. This way, if you get pulled over, just turn the board on and off and then bingo youâre back at 20kh/h default speed.
It makes it essentially impossible for the police to make the board go faster than the defined limit without having access / knowledge of vesc tool / metr and your phone!
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