Drive Train Speeds

[Oliver_W]

@The VEX Raptors

Actually, we found that a drivetrain running at 90% power runs at almost exactly the same speed as a drivetrain running at full power, but with less current draw.

As you can see from this post:

@jpearman

I realized that I did not actually post a graph of the difference between unloaded motor speed for a cortex 2 wire port vs a servo port, so here it is, same motor tested on port 9 using a MC29 and then port 10.https://vexforum.com/attachment.php?attachmentid=6175

The relationship between motor control value and actual motor power draw is not linear, and it levels out at high motor control values.

This is consistent with your observation that a drive train running at 90% power travels at the roughly the same speed as one running at full power, but it means that your assumption that it draws disproportionately less current is probably wrong.