Nit-picking at best, but I can't help but notice a lack of fillets on both interior and exterior vertices. The sharp corners will introduce stress concentrations that could be avoided by including even small radius fillets (albeit larger than the inherent radius left but whatever cutting tool you are using). If you are going to continue using 3/16th material during competition I would urge you to reevaluate your truss pattern. I think that you can be much more aggressive on material removal.
I appreciate trying to free up space inside the frame, but I have to wonder what is the acceptable cost. Max hits the nail on the head with this question IMO.
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What exactly are you guys trying to get out of this drivetrain that could not be done with a standard 4 or 6 cim versa drive or even a kitbot?
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I want to be clear that I am not trying to stifle creativity, which seems to be the current sentiment critical analysis brings about on CD.