Very nice... I love what you've done with the double first stage belts. The weight came out really nicely it looks like too. Given the price of waterjetting, this could be a great way to make the DT as fast as possible early in the season. Are you planning on releasing CAD for this?
Seconding the notion about the massive wheels. If it's not under 2", it's definitely too big.
Seriously though, what is it with you people and not using buttonheads?
EDIT: Given the space between plates, this could be a good candidate for 15mm wide belts.