The BRO | 12S8P | Haero Bro Model | E-TOXX Dual Direct Drive | 170kV 6374 Maytech Closed Can | Dual VESC 6 |

Did you at least carve to your doom?

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Carved for the postman car. Got also the wellknown vesc wobbles.
Btw. My board seems to be a efficiency monster.

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@Trampa Is that normal on Hw6.4? It is far off.

I have asked the same question.
Apparently it is.
I have 2x Vesc6 and 2xVesc6+ and all of them deviate by 0.5 to 1.5V from the correct value (measured with a calibrated multimeter).
Weird thing is my focboxes where very accurate.

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I trust more my smart bms. Charge only

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I trust my calibrated multimeter which shows the same values as my other calibrated multimeter :wink:

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All VESCs can only measure the voltage down to the accuracy of the shunts. These parts have a tolerance of ±1%. Other parts involved also have that 1% accuracy. And if you are lucky they are bang on, if you are unlucky the tolerances ad up to a max of 2%.

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In my case it is well over 2%. Closer to 3.5%
Battery voltage 49,75V (measured with a calibrated voltmeter)
Master vesc reported by vesc tool 48,7V
Slave vesc reported by vesc tool 48,1V

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That is still not critical for batt cutoff. On 12S 2% is 0.083V per cell.

All I am saying is that one of my vesc6 has more that 2% deviation in voltage measurement.
Functionally it has been perfect so far.

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All resistors involved have 1% accuracy and things can add up. There is little you can do about that.

@tipsy watch the vid :wink:

Did you drill those holes yourself? If so how did you get it centered?

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The sprockets came like that. I do not have the right tools to get those holes drilled centered, but if you have a drill press it shouldn’t be too hard.

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Any Progress in the least 14 days?

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It’s running. :joy: I’m working on a ride video, only showing the board

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Just some riding footage from last weekend

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Nice to see the beauty out in the wild :call_me_hand:

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Today I had my first walk of shame with that board. My on/off switch thought, Houston we have problem, we gonna get a ripoff. 2km to my house. Easy repair for me. More padding is needed. Pics will follow.

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Askew axle. I hate it.

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