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Old 03-25-2016, 01:15 AM   #182
PeteInLongBeach
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Join Date: Apr 2006
Location: Long Beach, CA
Posts: 1,127
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Quote:
Originally Posted by rotorblades View Post
it couldnt be the motors whirring or it would be moving
Beginning with the i2 / x2, all start-up / shut-down / warning sounds are generated by cycling / vibrating the drive motors.
Whirring proportional to speed is gear noise from the transmissions.
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