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To my knowledge the frequency is always fixed.
Ok
What happened
I drove out of town - checking my Cycle Analyst against a GPS - doing 105Kph - damn close
Noticed I was pulling 250 amps
Turned around,
Back in town - heard a "rubbing sound" - unable to get full power
Battery voltage was not too low - just very little current even at full throttle
Limped home
Car in garage - checked the drive-train all looked OK
I worried that something had happened to the brushes and set up an inspection camera - looked OK
By then about an hour had passed - then I thought about over-temperature - but everything felt OK
Tested the car - everything normal
Except that I am using more amps (which is expected as I have dropped from 44S to 40S)
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