Two of our grade 11 students took it upon themselves to design and build a drivetrain during the pre-season. Matt and Jonathan did a spectacular job, putting in a lot of time working out all the details in CAD, and then machining all of the parts themselves.
I encouraged them to try some new things, since that's what the pre-season is for. Here are the specs:
-Fully geared
-8wd, front wheel raised 3/16"
-6" aluminum performance wheels
-Single speed: 10fps (it's all about acceleration)
-Riveted frame construction
-Fiberglass belly pan
-Beefy, heavy construction (didn't care about weight on this one)
It should be driving soon!