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Originally Posted by KrazyCarl92
Did some testing last night.
(snip)
We have a If you have suggestions for other things to test with this set up I would be glad to give stuff a try.
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Thanks for sharing the testing you did - empirical data points are helpful. One thing you could do if you're curious is keep adding weights to your robot and run it in low gear, and then record the total weight at which the drive ceases to be traction limited from a stall. Knowing that, one can backtrack a bit and calculate the gear ratio at which the robot would be barely traction limited with the actual robot weight. We did something like that during the season to figure out where we'd be traction limited, which is how we arrived at the 8.7 ft/s we ran at the start of the season.
That's the type of thing I want to have our team do in the fall; test the CoF of the wheels using the angled ramp test or whatever; measure the voltage; drive the robot through some sprints and measure its actual speeds and rates of acceleration; use weights to figure out at what point it becomes traction limited from a stop. Once we have all of that stuff, we can adjust the unknown spreadsheet parameters accordingly and hopefully have a model that makes decent predictions for other sets of circumstances.