pic: How 125 is rolling this year...

[Brandon Holley]

Originally Posted by Bruceb

Has anyone else tried this? Any success? Brando, what mods did you come up with for this wheel? Can I get a picture of the actual mold? I don't quite get how you get the entire wheel molded on all sides without any machining.
Thanks
Bruce

Here is a picture of just the mold



If you don't mind small imperfections on the face of the wheel then you don't need to worry about machining. Because you are using silicone as your actual mold cavity, the regular rules of molding can be stretched. Things like undercuts and 0 degree draft can be done because the silicone is compliant and moves out of the way of the way of the part when removing it from the mold.

Originally Posted by r2davis2

Those look very nice, I'd love to see how well they work out on an actual drivetrain.

These wheels are from our 2010 robot, so they were in this past years competition. Changes are in the works to make them even more reliable, cheaper, faster to turnover and easier to make.

-Brando