Sorry for the delay in getting the CAD up guys. Wanted to wait a bit anyways so I could give you the full scoop after its been battle tested through 2 regionals. Seems a little better than just posting about CAD files.
Overall the system has been amazing and we have loved answering all the questions and showing the drive to everyone who came by to ask about it at both Finger Lakes and Waterloo. Being just a 2nd year team with a brand new driver using crab for the first time, it took a full regional to get the programming tweaked and the driver used to using this drive system. We obviously had a better time driving around for most of the Waterloo regional
We used 1/2" aluminum drive shafts which I am happy to say have held up great (was a little worried to tell the truth). #25 chain for everything. The only real failure we had was one of the tensioner sprockets coming off the bearing that it was press fit onto at FLR. Probably not the best press fit in the first place, but we solved it by drilling 3 small holes into the sprocket to hold the sprocket on with #6 bolts.
I've uploaded the iges file (24MB) for anyone interested here:
http://www.evilshare.com/26a2916e-6f...8-0007e90cfb90
just enter the short code into the box, then hit the "Click to download" button, should be all good.
Any other questions just ask, or feel free to come by in Atlanta as we should have the programming tweaked even more by then. Trying to get some good traction control going as well so should be fun!