This is a concept I came up with in the summer of '06. I was keeping it a secret in case we should ever use it, but we’ve decided we most likely never will. The design was meant to be easy to machine and assemble, as well as repair, with an internal pulley to drive each wheel (based on the conceptual DT they were in). The rest of the DT has some design concepts that were revised in my newest conceptual DT, so I’m holding back on that for a while. The 229 wheel reminded me that I made this