Headed to the Dyno. Any guesses?

3406pk said

What did you change from run 5 to run 6. Run 6 was much better in that the peak hp came higher at 6100 rpm and tq was up at that rpm also. Run 5 was peak hp at 5700 rpm and tq was down 20 pts at comparing to #6. Run 6 had more torque at all the upper rpm points.

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These were the only 2 pulls I witnessed for myself. Unless something can be done from the control room, I would say no changes between 5 and 6. The motor was never shut down between these two runs and they were back to back. Maybe a minute apart. No one went into the Dyno room between these pulls.

I just checked. I have audio for the last 2 pulls. I know the motor wasn't touched between the 5th and 6th pulls. The 5th pull was about 20 seconds long. Then at idle for 40 seconds. Then 6th pull for about 24 seconds.
Also, the motor was at rest for 30 minutes prior to 5th pull. They had done a few pulls, but were waiting for me to show up for the last couple. So, the motor would have been "warmed up" more on the 6th pull than the 5th. Its the only thing I can think of worth mentioning.