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Unread 22-01-2013, 10:05
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mrnoble mrnoble is offline
teacher/coach
FRC #1339 (Angelbotics)
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Location: denver, co
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Re: abec 1339 teaser

Quote:
Originally Posted by CalTran View Post
I'm curious as to what sort of compression you're putting on the discs, because longboard wheels don't compress much, if any. Have you prototyped a pneumatic wheel shooter? How would you say it compares, if you have?

Easy to modify for gearboxes and motors huh? Custom machine your own hubs for them? Most longboards I've seen are unpowered dead axles.
I'll have to ask the group that's been testing them what their compression is. We chose these wheels specifically for their low durometer rating, and for the old-school cantilevered edge that allows for compression to a larger degree than modern wheels. We have tested other skate wheels, as well as the AndyMark 8" pneumatics. We got a little more distance with the pneumatics, but with increased vibration and size that we didn't want to compromise for. Currently they are shooting a consistent 40' at a 5 degree angle. We are still working out the kinks but feel they will be our best option to accomplish our goals. We are using the Vexpro planetaries at 5:1 and 1:1 with the BAG motors.

Yes, they were easy to modify. A 1" hole through the center, mounted to whichever AndyMark hub we wanted to try for the various motor/gearbox combinations we've put them through. For these wheels, we flattened the back so as to make them lighter and easier to mount. It took about 5 minutes per wheel. No need for sarcasm.