Kushboard Pico, an even lighter build! | 121c Orbiter | BN 145mms Belt drive | 10s1p P42A | Mach 1s |

There has to be some additional trick otherwise you would have to wave goodbye to motor break

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Yup thatā€™s what I was suggesting too

Im also curious about this, i couldnt see the trick used here. Maybe there is a patent filed?

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Ahh no trick here sadly. Probably really just one-way bearings :frowning:
I found the video on their youtube channel and the very same question was asked there.

image

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braking an hub board with hubs is less than optimal, let alone a belt boardā€¦ ^^"

I mean that solve the differential problame with the 2wd 1motor thing, but then you have actualy 3 motors :roll_eyes:
At this point you can have one directional bearing and one normal bearing, so you still get all the braking power of the 1wd belt system

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Sucks

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Turn the one way bearing so itā€™s two wheels of braking and one wheel of power

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So when braking for example with a one way bearing, it means the inner race of the bearing is rubbing on the motor shaft? Right? I wonder if thatā€™ll be a problem long term. Iā€™m down to give the one way bearing a try.

I think it is the opposite : the bearing is on the motor pulley and is fixed somehow on the shaft : when the motor accelerate the bearing doesnā€™t turn so the pulley is fixed on the axle and turns,
when the motor brakes, the bearing act like a bearing and so the pulley just roll free with the belt and wheel
at least thatā€™s how Iā€™d do it

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I think you would need to adhere them somehow so this didnā€™t happen, but I could be wrong

Why would a one way bearing affect braking? The rotationnis still the same direction, its slowing down? If the pulley doesnt hold, its just one wheel braking? Which sucks but isnt no brakes, right? What am i missing?

A braking force is the same as a reverse force. So even if the wheel and motor are still spinning in the same direction, the motor is pulling backwards and the bearing releases, itā€™s about force direction and relative speed not total speed.

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am researching

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@Linny any update?

Limited slip / torque vectoring / Torsen esk8 differential would be AMAZING

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Unfortunately Iā€™ve come to accept the reality that the single shaft to two motors is not an ideal set up (for me at least)

Iā€™m not sure how to better explain the ride feeling but if you have ever done a power slide on a board before be it a manual or electric, itā€™s like that, but it happens at every speed. So even if you are snail speed and you do a turn, the back will do a really weird power slide and want to destabilize you. For what iā€™m planning to use this board for, which is for small commute distances and to navigate city pavements that tend to have tight corners, this ainā€™t it.

So iā€™m planning to stop this build as is, and remain it in itā€™s single drive.

However! I do not plan to give up on the differential project just yet. I may dedicate another build for it in the future, but i do not want to mess with this board anymore as itā€™s fine as is for now.

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