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Updated Wheels (markdown)

Candas1
2022-01-03 14:19:59 +01:00
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Wheels.md

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# Hoverboard Wheels # Hoverboard Wheels
Hoverboard wheels come in different sizes(4.5",6.5",8",8.5",10"), different printing, with tube or tubeless.<br> Hoverboard wheels come in different sizes(4.5",6.5",8",8.5",10"), different printing, with tube or tubeless.<br>
All have been successfully used with this firmware as the wheel share this same characteristics: All have been successfully used with this firmware as the wheel share this same characteristics:
- same motor winding - same motor winding
- 30 pole pairs - 30 pole pairs
- Wye/star wiring - Wye/star wiring
- Hall sensors are 120° apart
- 4° resolution
<img src="https://github.com/EFeru/hoverboard-firmware-hack-FOC/blob/master/docs/pictures/motor_winding.png" width="700"><br> <img src="https://github.com/EFeru/hoverboard-firmware-hack-FOC/blob/master/docs/pictures/motor_winding.png" width="700"><br>
Unfortunately the quality of the wheel might differ, over the years the inner design has been modified to cut down costs: Unfortunately the quality of the wheel might differ, over the years the inner design has been modified to cut down costs:
- smaller stators - different stator size
- less coil wires - different number of coil wires(3,4,5) and thickness
# Using the firmware with other wheels # Using the firmware with other wheels
The firmware might work with different type of Motor/Wheels.<br> The firmware might work with different type of Motor/Wheels.<br>
@@ -20,12 +23,15 @@ You might have to update the number of [pole pairs parameter](https://github.com
Hoverboard wheels can be rewired from Star to Delta to trade Torque for Speed.<br> Hoverboard wheels can be rewired from Star to Delta to trade Torque for Speed.<br>
It should work with the firmware (to be confirmed), but will introduce a 30° phase shift, so the wheel will spin faster in one direction, which shouldn't be a problem for Scooter or Bike projects.<br> It should work with the firmware (to be confirmed), but will introduce a 30° phase shift, so the wheel will spin faster in one direction, which shouldn't be a problem for Scooter or Bike projects.<br>
For Kart projects, as the wheels spin in opposite direction, you might need to swap phases so that the wheels spin fast in the right direction, knowing that reverse will be slower. For Kart projects, as the wheels spin in opposite direction, you might need to swap phases so that the wheels spin fast in the right direction, knowing that reverse will be slower.
I won't explain here how to rewire as there is already a lot of content online.
# Links # Links
Here are a few interesting builds with hoverboard wheels, you will find many more on Youtube !!! Here are a few interesting builds with hoverboard wheels, you will find many more on Youtube !!!
* [Mounting bigger tires on a 6.5" wheel](https://www.youtube.com/watch?v=oUuCi9lp9IE) * [Mounting bigger tires on a 6.5" wheel](https://www.youtube.com/watch?v=oUuCi9lp9IE)
* [Extending the shaft on a 6.5" wheel](https://www.youtube.com/watch?v=aJ_qoiFvPzs) * [Extending the shaft on a 6.5" wheel](https://www.youtube.com/watch?v=aJ_qoiFvPzs)
* [Mounting a disk brake on a 6.5" wheel](https://www.youtube.com/watch?v=GWQx6ymAfUk) * [Mounting a disk brake on a 6.5" wheel](https://www.youtube.com/watch?v=GWQx6ymAfUk)
* [Delta rewiring ona 6.5" wheel](https://www.youtube.com/watch?v=sO9VX6ElDfY)
* [Omniwheel](https://www.youtube.com/watch?v=QXF6hNVUydI) * [Omniwheel](https://www.youtube.com/watch?v=QXF6hNVUydI)
* [Nice teardown with explanation of the characteristics](https://discourse.odriverobotics.com/t/project-hoverarm/441/2?u=madcowswe)
* [Torque/Price ratio](https://youtu.be/_VUtfK4bCl8?t=33)
* [Great explanation of the hall sensor resolution of a hoverboard wheel](https://www.youtube.com/watch?v=_VUtfK4bCl8&t=533s)