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> Low-speed power surges
111
post Jul 11 2001, 03:41 PM
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Has anyone else had an experience with *low* speed<br>power surges? On July 4, I drove uphill in <br>traffic at 2mph with a full load and my accelerator foot<br>firmly wedged against the side wall of the footwell (for stability) and the car's thrust<br>was something like a 2-second square wave. (as<br>though it was switching on and off the electric<br>motor...) <br><br>I haven't been able to duplicate the effect<br>with lighter loads or at higher speeds (3mph <br>is enough to stop the oscillation).
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post Jul 12 2001, 11:20 PM
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The closest thing I've encountered is when pulling into the garage at a fraction of a mile per hour. I can feel some granularity in the power. I figured I was feeling the individual pulses going to the electric motor.
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post Jul 15 2001, 01:47 PM
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I know it feels like that when I am out of gas and going up hill.
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post Jul 15 2001, 08:29 PM
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Re: "The closest thing I've encountered is when pulling into the garage at a fraction of a mile per hour. I can feel some granularity in the power. I figured I was feeling the individual pulses going to the electric motor."<br><br>The individual pulses going to the motor are in the mid to high hundreds per second. You're probably feeling the magnets in the rotor passing the centers of the windings in the stator (the motor housing). At really low speed this only happens 10's of times per second.<br><br>Robert Snyder<br>NJ-PIKACHU
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post Jul 16 2001, 08:33 PM
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Hmmm.. That's definitely not it -- this wouldn't be "granularity in the power" but rather a sort of gentle lurching (if you can call it that). <br><br>I'm taking it in for the 1,000 mile service on the 23rd -- I'll post anything I can get out of the tech.
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post Jul 16 2001, 08:36 PM
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&gt;I know it feels like that when I am out of gas and going up hill. <br><br>Had plenty of gas that time, and the ICE did run smoothly as I demanded more power to speed up, so I figure that probably isn't quite what I felt. <br><br>I still haven't had the courage to run it all the way out of gas. Soon...
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