<p>Here's a design I've been using, <a href="https://technabob.com/blog/2010/10/19/lego-metal-slug-tank/" rel="noreferrer">based on this model by Lambert Varias</a>:</p>

<p><a href="https://i.sstatic.net/eVZcL.png" rel="noreferrer"><img src="https://i.sstatic.net/eVZcL.png" alt="enter image description here"></a></p>

<p>It's not a perfect circle, but it is relatively small all things considered:</p>

<p><a href="https://i.sstatic.net/LimjW.png" rel="noreferrer"><img src="https://i.sstatic.net/LimjW.png" alt="enter image description here"></a></p>

<p>It's pretty simple, but here's a partial disassembled version to better show what goes into it:</p>

<p><a href="https://i.sstatic.net/VEXPU.png" rel="noreferrer"><img src="https://i.sstatic.net/VEXPU.png" alt="enter image description here"></a></p>

<p>Parts shown:</p>

<ul>
<li>1x <a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=55013" rel="noreferrer">55013</a></li>
<li>2x <a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=4265c" rel="noreferrer">4265c</a></li>
<li>2x <a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=57585" rel="noreferrer">57585</a></li>
<li>6x <a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=32013" rel="noreferrer">32013</a></li>
<li>6x <a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=32556" rel="noreferrer">32556</a></li>
<li>12x <a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=42610" rel="noreferrer">42610</a></li>
<li>12x <a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=50945" rel="noreferrer">50945</a></li>
</ul>

CC BY-SA 4.0
2018-12-12T07:20:24.623Z
2018-12-12T07:20:24.623Z
Alexander O'Mara
<p>Just stumbled across this little gem of a Lego omni wheel!</p>
<p><a href="https://www.youtube.com/watch?v=7gIUFnRCFY4" rel="nofollow noreferrer"><img src="https://i.sstatic.net/8BL4t.jpg" alt="enter image description here" /></a></p>

CC BY-SA 4.0
2020-11-14T14:46:23.237Z
Which is also by Isogawa Yoshihito, besides it being slightly more esthetic, I do not consider it an improvement on his previous design.
Michael Verschaeve
CC BY-SA 4.0
2020-11-13T19:21:25.683Z
2020-11-14T19:45:16.627Z
2020-11-14T19:45:16.627Z
Patrick Wood
<p>I have copied a design by Isogawa Yoshihito</p>

<p><a href="https://i.sstatic.net/Rsof8.jpg" rel="noreferrer"><img src="https://i.sstatic.net/Rsof8.jpg" alt="omni wheel"></a></p>

<p>I prefer it over the Lambert Varias design as the wheels are positioned more radially</p>

<p>More pictures in this EuroBricks thread:
<a href="https://www.eurobricks.com/forum/index.php?/forums/topic/76297-isogawayoshihitos-lego-technic-omni-wheel-crab/" rel="noreferrer">https://www.eurobricks.com/forum/index.php?/forums/topic/76297-isogawayoshihitos-lego-technic-omni-wheel-crab/</a></p>

CC BY-SA 4.0
2018-12-12T10:25:57.150Z
2018-12-12T10:25:57.150Z
Michael Verschaeve
<p>In robotics, rotacasters or omni wheels are often very useful.</p>

<p>It's possible to buy LEGO-compatible ones from some third parties, here's one random example:</p>

<p><a href="https://www.rotacaster.com.au/shop-product/robotic-wheels/rotacaster-35mm-double--35a--tpe-roller--abs-body--lego-or-vex-hub-adaptor" rel="noreferrer"><img src="https://i.sstatic.net/EFR9ns.png" alt="enter image description here"></a></p>

<p>Unfortunately, LEGO has yet to make any themselves, which means if you are looking for a purist solution (because of robotics competition rules for example) you are out of luck.</p>

<p>Or are you? It might be tough to make a small one, but surely it's possible to build one.</p>

<p>What are some good rotacaster / omni wheel designs?</p>

<mindstorms><technic><building><design><robotic>
What are some good purist rotacaster / omni wheel designs?
Alexander O'Mara
# What are some good purist rotacaster / omni wheel designs?

(Asked by: username_0 on 2018-12-12)

In robotics, rotacasters or omni wheels are often very useful.

It's possible to buy LEGO-compatible ones from some third parties, here's one random example:

[![enter image description here](https://i.sstatic.net/EFR9ns.png)](https://www.rotacaster.com.au/shop-product/robotic-wheels/rotacaster-35mm-double--35a--tpe-roller--abs-body--lego-or-vex-hub-adaptor)

Unfortunately, LEGO has yet to make any themselves, which means if you are looking for a purist solution (because of robotics competition rules for example) you are out of luck.

Or are you? It might be tough to make a small one, but surely it's possible to build one.

What are some good rotacaster / omni wheel designs?

**Tags:** mindstorms, technic, building, design, robotic


---

## 3 answers

### Answer by username_2 on 2018-12-12. Score: 8 | Accepted answer

I have copied a design by Isogawa Yoshihito

[![omni wheel](https://i.sstatic.net/Rsof8.jpg)](https://i.sstatic.net/Rsof8.jpg)

I prefer it over the Lambert Varias design as the wheels are positioned more radially

More pictures in this EuroBricks thread:
<https://www.eurobricks.com/forum/index.php?/forums/topic/76297-isogawayoshihitos-lego-technic-omni-wheel-crab/>


---

### Answer by username_0 on 2018-12-12. Score: 9

Here's a design I've been using, [based on this model by Lambert Varias](https://technabob.com/blog/2010/10/19/lego-metal-slug-tank/):

[![enter image description here](https://i.sstatic.net/eVZcL.png)](https://i.sstatic.net/eVZcL.png)

It's not a perfect circle, but it is relatively small all things considered:

[![enter image description here](https://i.sstatic.net/LimjW.png)](https://i.sstatic.net/LimjW.png)

It's pretty simple, but here's a partial disassembled version to better show what goes into it:

[![enter image description here](https://i.sstatic.net/VEXPU.png)](https://i.sstatic.net/VEXPU.png)

Parts shown:

* 1x [55013](https://www.bricklink.com/v2/catalog/catalogitem.page?P=55013)
* 2x [4265c](https://www.bricklink.com/v2/catalog/catalogitem.page?P=4265c)
* 2x [57585](https://www.bricklink.com/v2/catalog/catalogitem.page?P=57585)
* 6x [32013](https://www.bricklink.com/v2/catalog/catalogitem.page?P=32013)
* 6x [32556](https://www.bricklink.com/v2/catalog/catalogitem.page?P=32556)
* 12x [42610](https://www.bricklink.com/v2/catalog/catalogitem.page?P=42610)
* 12x [50945](https://www.bricklink.com/v2/catalog/catalogitem.page?P=50945)


---

### Answer by username_1 on 2020-11-13. Score: 5

Just stumbled across this little gem of a Lego omni wheel!

[![enter image description here](https://i.sstatic.net/8BL4t.jpg)](https://www.youtube.com/watch?v=7gIUFnRCFY4)

> **Comments:**
> **username_2**: Which is also by Isogawa Yoshihito, besides it being slightly more esthetic, I do not consider it an improvement on his previous design.  

---

