Thank you so much to Team 254 for hosting us all at your practice field today. Amazing things happen when all of these teams get together - California is ready for champs, are you?
#FuelDoesn’tMatter
Hope they’re putting faster serializers in the boilers at champs!
And of course, this is the one day we don’t visit their field 
Somebody needs a pokey stick. https://youtu.be/z7fep3iJ5e8?t=114
That’s probably how GDC imagined Steamworks would be played.
Congratulations, you scored almost as much as you would have by spinning 2 rotors!
Serializer fail? 
Anyone have a McMaster number for the yellow wheels? What are the benefits of those?
All I know is that they are probably 35A Fairlane wheels which don’t wear too easily, are heavy-ish for more intertia, and are wide enough for balls to go through in a consistent manner.
I could be wrong, but I believe the part number is 2475K76.
Fairlane urethane abrasion resistant rollers on McMaster.
Yellow was no better than black for us, but others experiences may vary.
When you say black, are you referring to the 60A, blue-green option? I can’t find a black option on McMaster.
Black is Neoprene, not Urethane. 2476K37
Ah ok. Did you just use a 1-1/4" shaft or did you machine a press-fit hub?
I can’t speak for NickE, but our team machined a 1-1/4" +.005" hub with a half inch hole bored in the center to broach to hex. After it was made we put it in the freezer and then pressed it in the wheel with red loctite. After it set, we broached it and it has worked ever since.
Pretty sure they use a press-fit hub. I’m 99% sure 1678 did that last year too.
Most teams machine a press-fit hub. Some teams make a knurled press-fit hub, others make an oversized delrin hub, freeze it (sometimes with liquid nitrogen or dry ice), then press it in.
In the past we made press fit 1/2" hex hubs.
This year we started with a fancier press fit hub that clamped onto a 1" steel tube (so that we could reduce runout and not have to use 2 shaft collars to retain it laterally)
We moved to a new design post-SVR where we just press the wheels directly onto a 1.25" steel tube with green loctite. Downside is you have to position them where you want them the first time, plus is that you eliminate the need for the hub.