[slijin]

Originally Posted by AlexH

How do you know the motors are running slower than last year? Are you basing this of how they sound? Were you running Victors last year? Victors and Jags run at different frequency's. I think, (but can't exactly remember if this is true) that Jags run at a higher frequency than Victors which would make the motor run quieter.

This only has an effect while ramping up to full speed and during speed control (depending on the application) - it wouldn't decelerate a drive train. What will is a different gear ratio.