pic: 2015 Off-season Single Speed Coaxial Swerve Chassis

[Kevin Ainsworth]

Originally Posted by NWChen

Why did you go with a 775 on the VersaPlanetary for module rotation? What ratios are on it/speeds can this achieve?

The steering gearbox is a Vex Planetary with 100:1, then through a 40 tooth (this design and 36 tooth for the 2015 unit) into a 72 tooth which the wheel is attached to. 48 RPM steering speed at peak power for a 550 motor.

We have used 5XX series motors on both our 2014 and 2015 swerve drives for steering. I'm not sure why Nick used a 775, we have never had an issue with the 5XX series motor for steering. I am guessing it is because we had Nick setup our Versaplanetary gearbox in Solidworks with "Configurations" and he picked a different configuration.

To discuss configurations a little more. When designing the robot we can insert a Vex Versaplanetary gearbox into Solidworks and change it to any possible configuration. This is a tab that allows you to reconfigure an assembly automatically, once you've spent the time adding in all possible parts. You can hide ,surpress, change items in the assembly so that it "reconfigures" the assembly. We currently can change between single and double stage reduction. We can change between the Bag motor, RS550 and RS775 motors. We can change the output shaft options between the .375" hex, .500" hex, .500" round, and 8mm keyed CIM shaft. We can also change to a dual motor option. This all occurs with a click of a button on the same gearbox assembly. So there is no deleting and reinserting a new custom setup. There is no creating a custom assembly each time we need to insert a VersaPlaentary gearbox into the robot design. We should create a video sometime to show how to do this for the First community.