Re: Who makes their own wheels?
 

Those are some absolutely beautiful wheels. How did you attach the sprockets to the wheel "shafts"? I'm assuming the two little holes at the end of the wheel "shaft" had something to do with it. Also, why were some of the sprockets hex shaft fit and some round(in pic #2)?

Re: Who makes their own wheels?
 

The sprockets were pinned to the wheel shaft. The wheels with the sprockets that have hex were the ones driven by the gearboxes. This allowed the output shaft of the gearbox to slide right into the sprocket to drive it.

Re: Who makes their own wheels?
 

Here is our latest custom wheel:



Some details:
1) It's about an inch and a half in diameter.
2) It features nine spokes - they're thin but since there are nine of them it should work out.
3) We have a custom bore in the middle to maximize torque transfer without too much shock load on the shaft.
4) There is slightly more material on one end so that the moment of mass is slightly off center, resulting in easier obstacle traversal.
5) It is manufactured through a natural extrusion method our team has worked with the farmers in the local area to develop.
6) It is comprised of a strong organic compound that we believe no team has used before and can give us an advantage on the field.



....or that's a lemon from dinner tonight. I forget which. ;)

Re: Who makes their own wheels?
 

It looks like a Harig Uni-Dex. http://www.harigmfg.com/unidex.html

Or a Harig GRIND-ALL No. 1. http://www.harigmfg.com/grindall1g.html

In grinding these are commonly called whirligigs. Unless your grinding I doubt you can justify the cost of a Harig... even used.

You might try a less expensive spin indexer that can be had for ~$50 bucks.
http://www.grizzly.com/products/5-C-...campaign=zPage

Re: Who makes their own wheels?
 

We made wheels during the 2016 season for our shooter. We needed flywheels and we found some in our many years worth of old stuff and were going to use them but realized that a) the shaft hole and the outside of the wheel weren't concentric (Enough that you could clearly tell when they were spinning in a lathe) and b) that they were custom wheels from an old season (2007... I think...) and so were unusable because of the rule about non-COTS parts manufactured outside the season. So we designed our flywheels and machined them ourselves. That was a sight to see! These were 4" OD wheels with material cut out to the 3/4" (I think...) support for the shaft and into the wheel roughly 1" to the center. The best part... THEY WERE MADE OF STEEL! I need to find a picture of them because the are the greatest thing I have seen come out of our shop without the help of a CNC machine.