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TOV Forums > IMA/Hybrids > > Re: Long term Electric motor reliability.

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S600=Dream
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Long term Electric motor reliability.    (Score: 1, Normal) 11-17-2012 09:07
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So, we know that batteries go bad eventually, because that's what batteries do. Obviously, over the course of some 200,000 miles one will need to replace the battery pack.

So, what about the actual electric motors? Do they have a lifespan that goes as long as the gas engine itself? And when they do go bad, how much does one of them cost to replace?

As of now, I still see a whole pile of 20-25 year old Hondas on the road. Daily. Often. Plus, I'm the type of guy who will drive a car into the ground. Now, if I was convinced to buy a hybrid in the future--especially one of the new ones with the new high-po-high-tech mega dual motor jobs, what could I expect over the course of ownership for replacement costs and timelines and whatnot?

That's something that's been bugging me.



notyper
Profile for notyper
Re: Long term Electric motor reliability.    (Score: 1, Normal) 11-17-2012 10:15
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It depends. As you go for more and more finely "tuned" electric motors with higher and higher outputs for a given size, or using higher and higher voltages, you are more likely to have breakdowns - usually in insulators or windings.

But, in general, electric motors should be more reliable than a piston engine. Compared to an IC engine you have no serious heat or pressure and very few moving parts. If anything, when you look at the industrial world, electric motors are actually better developed and very well understood compared to internal combustion.

SC
Tsx24Mivtec
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Re: Long term Electric motor reliability.    (Score: 1, Normal) 11-17-2012 14:14
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Pretty much exactly what notpyer said is spot on. I work in the industrial world(power plant) and the electric motor is very simple device with few moving parts, just the rotor and bearings supporting the shaft.
In general the most common failure on an electric motor is the bearings. I know some motors that have run 24/7 non stop for over 7yrs with no issues and still going.
The ic engine will fail long before an electric motor will. You shouldn't worry about the motor. Its the battery that is the problem
S600=Dream
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Re: Long term Electric motor reliability.    (Score: 1, Normal) 11-17-2012 18:27
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Great answers. Thanks, gents.

 
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