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All New Rotacaster's Omni-wheels to Test Drive!

Discussion specific to the intelligent brick, sensors, motors, and more.

All New Rotacaster's Omni-wheels to Test Drive!

Postby sparramc » 06 Dec 2010, 07:42

Christmas really has arrived early this year. Today I had a visit from the Postman with a parcel from Rotacaster Pty. Ltd. in hand. Inside the parcel was a new set of 4x Rotacasters with the new Black Hub-centres and S55A Hardness type Orange Rollers and a set of 3x Rotacasters with the new Black Hub-centres and S45A Hardness type rollers. The S45A's roller colour is a perfect match for Lego's "Dark Bluish Gray" colour scheme. I'm excited about testing the new wheels using softer durometer materials on the rollers. The S45A provide better traction, which should be especially good for lighter robots.

Image
The new Rotacasters are at the bottom of Photograph.

Rotacaster Pty. Ltd. have been tinkering with the wheels which has delayed things by a week or two longer than expected. Rotacaster engaged a "Quality Control Expert" to work with their manufacturer and as a result, have gotten to the bottom of the sticking roller issue which was a problem on some earlier wheels. All the tooling modifications are now complete, with the bush fitting in to the wheel centre along with the bush fit to the Lego Axle which is firm: yet not too tight for small fingers.

Image
A Killough Platform fitted with the New S45A Rotacasters.

The new S45A look great with the Black & Grey colour scheme of my Killough Platform above. The S45A wheels using the softer durometer materials on the rollers  does give better traction, than the S55A type. This is especially noticeable for lighter robots like the one above. When tracking on hard vinyl flooring, the S55A have a tendency to slip rather than grip with a change in the Robots direction. There is a noticeable improvement with the S45A wheels on the Robot above.

The Rotacaster Omni-wheels are a precision piece of engineering in all respects. They are made to the same exacting standards you expect with your Lego Technic parts. These Lego compatible wheels leave the other versions available in their wake. Not only do the make the ultimate wheels for Killough type robotic platforms, a single Rotacaster makes the perfect Jockey-wheel for your Tri-Bot as they never point in the wrong direction and can't jam.

Image
Rotacasters make perfect Tri-Bot Jockey-wheels!

More examples of the uses I've found for my Rotacaster omni-wheels can be found HERE, as well as at Xander Soldaat's website: : I'd Rather be Building Robots. Xander is also part of the development journey to produce the Lego Technic version of the Rotacaster Omni-wheel.

ImageFor more details, please fly too my website: www.rjmcnamara.com
regards

Ray McNamara

www.rjmcnamara.com

'The Universe Consists of 1% Hydrogen, & the Rest is Ignorance!'
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Re: All New Rotacaster's Omni-wheels to Test Drive!

Postby mightor » 06 Dec 2010, 14:07

Those black wheels are well sexy. I am looking forward to seeing those pop in my mailbox any day now. Of course, you living in the Land of Oz gives you an unfair advantage to getting those things quickly.

These new black ones are supposed to be more grippy than the orange ones. I love the colour scheme, too.

Regards,
Xander
| My Blog: I'd Rather Be Building Robots (http://botbench.com)
| RobotC 3rd Party Driver Suite: (http://rdpartyrobotcdr.sourceforge.net)
| Some people, when confronted with a problem, think, "I know, I'll use threads,"
| and then two they hav erpoblesms. (@nedbat)
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Re: All New Rotacaster's Omni-wheels to Test Drive!

Postby sparramc » 07 Dec 2010, 07:15

Hi Xander,

;) Stop ya moaning! You received the first prototypes before I did.

Here you go, just for you:



NXT Killough Platform Fitted with the new Rotacaster S45A Omni-wheels
regards

Ray McNamara

www.rjmcnamara.com

'The Universe Consists of 1% Hydrogen, & the Rest is Ignorance!'
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Re: All New Rotacaster's Omni-wheels to Test Drive!

Postby hassenplug » 07 Dec 2010, 13:39

Not sure if you noticed, but your killough line-following robot doesn't work very well. :)

Steve
---> Link to lots of MINDSTORMS stuff under my picture --->
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Re: All New Rotacaster's Omni-wheels to Test Drive!

Postby mightor » 07 Dec 2010, 16:39

It's following the one on the ceiling. You can't see it.

As for the wheels, mine arrived today :) w00t! The black ones are so grippy, unreal.

- Xander
| My Blog: I'd Rather Be Building Robots (http://botbench.com)
| RobotC 3rd Party Driver Suite: (http://rdpartyrobotcdr.sourceforge.net)
| Some people, when confronted with a problem, think, "I know, I'll use threads,"
| and then two they hav erpoblesms. (@nedbat)
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Re: All New Rotacaster's Omni-wheels to Test Drive!

Postby aswin0 » 09 Dec 2010, 07:59

Hi,

I got the rotacaster wheels for my birthday. The ones with orange wheels. I'm really pleased with them. Below a picture of my platform. It is good fun to see what kind of movements it is capable of.
attachment=0]IMG_6719.JPG[/attachment]
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My blog: nxttime.wordpress.com
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Re: All New Rotacaster's Omni-wheels to Test Drive!

Postby mightor » 09 Dec 2010, 12:36

Aswin,

Do you think you could take some more detailed pics of your robot? I love how compact it is! I'd love to make one like it :)

- Xander
| My Blog: I'd Rather Be Building Robots (http://botbench.com)
| RobotC 3rd Party Driver Suite: (http://rdpartyrobotcdr.sourceforge.net)
| Some people, when confronted with a problem, think, "I know, I'll use threads,"
| and then two they hav erpoblesms. (@nedbat)
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Re: All New Rotacaster's Omni-wheels to Test Drive!

Postby hassenplug » 09 Dec 2010, 13:56

on my screen, all I see is a strip of carpet. I had to save the picture locally and look at it. Nice bot.
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Re: All New Rotacaster's Omni-wheels to Test Drive!

Postby mightor » 09 Dec 2010, 14:23

Steve,

Right click on the picture and open in new tab :)

- Xander
| My Blog: I'd Rather Be Building Robots (http://botbench.com)
| RobotC 3rd Party Driver Suite: (http://rdpartyrobotcdr.sourceforge.net)
| Some people, when confronted with a problem, think, "I know, I'll use threads,"
| and then two they hav erpoblesms. (@nedbat)
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Re: All New Rotacaster's Omni-wheels to Test Drive!

Postby novicesmml » 09 Dec 2010, 19:24

huh whats this all about?
Whats rotacaster and whats the story with protoypes? :?:
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