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Motor analysis
I've noticed in several posts about people who daul/triple/quad battery mod their cars that at a certain point the motor actually decreases in speed. At times the motor will also make a strange, high pitched humming sound (like an old kettle boiling).
Attached below is a graph detailing the torque / RPM speed of a generic DC motor and how this changes as the amount of current (and power which is a function of voltage and current P = VI) to the motor is increased.
This should hopefully help (and probably confuse!) people into understanding the properties of the motor in their Bit.
Cheers,
ph2t.
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