Team 3494 CAD Release

[Zealii]

Originally Posted by Kherda0

Both of these designs look great. Just a few questions though. Are the drive belts/chains on the inside of the bottom frame tubes? Will round drivetrain have shifting gearboxes or just single speed? Will there be any extra support for the CIMs? I'm just worried about them sagging and ruining the drivetrain in the process.

The drive chains are on the inside of the robot against the frame tubes. There was discussion about doing chain in tube, but having never done it before, we decided against it.
The round drive base uses tough box nanos from AM. Because I am using the gearbox as a spacer, the distance between the motor input and the drive shaft needs to be larger than what most off the shelf gearboxes have. A way to have a shifting gearbox instead is to do a custom one, but my team is not ready to put that much time into a gearbox.
We have never had any issues with sagging CIMs. I'm sure that it can happen, but in both cases we are using all the mounting holes provided. The way that these gearboxes are mounted are basically the same as we have done in past years. I do not foresee this being a problem on either design.