Here is a sneak peek of our new aluminum rover wheel. It can mount to any of the universal hubs (HUB-02, HUB-03) or the aluminum servo horn (HMSH-02) we offer. The wheel is 0.275" thick and the overall diameter is 2.75". They are heavy duty yet will provide precision results. Can’t wait to use these with the new RoboClaw 2 x 5 with encoder feedback. 8) I photographed it next to a standard plastic servo wheel.
Humm, yes, I’d like a pair of those! Looks like they’d work on one of my micromouse builds.
You’re saying the RoboClaw motor controller accepts quadrature? Haven’t seen any information on it.
You might want to check to see if the Wheel Watchers encoders will mount on the wheels; for use with R/C type servos (and servo horn).
nubotics.com/products/ww01/index.html
Alan KM6VV
I’ll have them in a week or so.
They’re not talking it up till they have more of the documentation done. But yes, all of their motor controllers have encoder inputs.
It should fit. Thats the same plastic rim in their photos as I have in mine. My aluminum rim is the same if it’s mounted to the servo horn.
Will you be selling the RoboClaw motor controller? 2 X 5 or 2 X 10?
Might be just the thing I need.
Alan KM6VV
Does a bear live in the woods? 
Yes I’m ready when they are! 8)
I see that the new wheels are listed now. The hubs are HUB-03, which are for four mm shafts. I’ve got the the GM-16 motors w/ encoders, so I need to use the HUB-02 hubs. Any solutions?
The RoboClaw is running the 'bot.
I always have trouble getting a wheel to run true on a setscrew-held shaft. How true do your wheels run? Are there any adjustments?
I just noticed that both hubs in question refer to the same sumo dot. So, maybe either could be used on the wheels?
Alan KM6VV
The wheels will fit any of what we call the universal hubs. We have them in 4mm and 6mm. We are bringing on 3mm, 1/8" and 1/4" this summer. We are updating the websites to reflect this.
I don’t know how to answer the trueness question… there are no adjustments.
Looks like the 4-bolt patterns are the same for all. what bolt-hole diameter and threads are you using? the other 4-hole “servo horn” pattern I have the numbers for.
Yeah, didn’t mean to “set you up” on the “trueness” question. For hobby parts, any parts other then precision shafts and collars, there’s not much that can be done. I was thinking that with clearance holes in the wheel, it might be possible to “nudge” the wheel to the best TIR. Maybe not. I get the same thing. Any time you use a set screw to secure a wheel (hub) to a shaft, you’ve introduced an offset. Only real way is to use a collet to secure the shaft, or press fit and true the wheel to the shaft. That works, but the shaft is already on the motor!
7/21/10 Edit:
It looks like the hubs could be “punched out” to a larger size. Is there enough material already for a 0.25" bore?
Can the tire be removed so that the wheel w/hub could be turned in the lathe? That might improve the TIR for odometry purposes.
Thanks,
Alan KM6VV