[ausev] 8" ADC motor

[Roy Holder]

At 01:30 PM 5/10/2007 -0500, you wrote:
>Do you have pictures of the damage?

of course,  just the outside for now.  I havent pulled the motor yet.

>Though catastrophic bearing failures on EV motors are probably not
>unheard of, this would be the first time I can recall ever seeing the
>topic discussed.  I wonder what warning signs could be considered, to
>prevent this from happening in the future? 

I had noticed a slight vibration earlier this week.  Other than that, not
much warning.


>And I wonder how many miles those bearings had on them...

I put 5000 In the last year,  Of the 39000 before I got thr car, I cant
say.  I know the motor was replaced once before, because of over RPM.  I
dont know if the motor was new or a rebuild either.

>
>  --chris
>
>
>
>On Thu, 2007-05-10 at 13:14 -0500, Roy Holder wrote:
>> At 11:40 PM 5/9/2007 -0500, you wrote:
>> >Hi Roy,
>> >
>> >Out of curiosity do you know what's wrong?
>> 
>> The front bearing failed on 183 wed.  I was coasting at about 25 when the
>> motor locked up.   I can see the alum. 'fan' in the cooling vents near the
>> trans is not straight, but ragher leaning to 1 side.  I took the brush
>> cover off and found 2 loose pcs of bent, torn copper(about 3.8" wide, about
>> 1/8 thick and 1 to 1.5" long, bent into a c shape).  The comm does not look
>> damaged, and I touched the motor just after it stopped and it was not hot.
>> Im afraid it will not be repairable.
>> I called a place in Dallas but the shipping on an iffy repair on top of
>> replacement is what Im trying to avoid.
>> 
>> I'll try to remove the motor this weekend and it its not too torn up i'll
>> talk to the in town guys.
>> 
>> thanks for the info.
>> 
>> >
>> >I took my motor to Tomecek Electric Motor Repair in Taylor. Dropping
>> >it off was a little disconcerting, as I was told to I placed it on the
>> >ground near a whole bunch of other motors to be worked on, described
>> >what I wanted done and was on my way. I got a call in about 10 days
>> >and they said it was ready.
>> >
>> >They had relaquered all of the windings, turned and grooved the comm,
>> >cleaned a far too conductive brush holder, generally cleaned the
>> >inside and given the outside a fresh coat of paint. That being said,
>> >all I really asked for was to turn and groove the comm, but they found
>> >the brush holder failing the insulation test. It ended up being a few
>> >dollars more than I thought (250-350 I think), but the guys working on
>> >the motors really knew their stuff and honestly everything they did is
>> >something that should've been done. I'd say they're generally a good
>> >place to take a motor.
>> >
>> >What is neat about this, is this motor has been through at least five
>> >or six years of service and the top to bottom tune up is around $300.
>> >This probably wouldn't have even been needed, save cleaning the brush
>> >holder, if I hadn't tried to "smooth" the comm myself and end up
>> >royally messing it up.
>> >
>> >The other place I called is Hamilton Electric on Airport. Don't know
>> >much about them.
>> >
>> >Oh and if you don't want your motor to end up industrial gray, I'd
>> >make it VERY clear :)
>> >
>> >Erik
>> >
>> >On 5/9/07, Aaron Choate <achoate at gmail.com> wrote:
>> >> There's an electric motor rebuild company over by me on Airport.
>> >>
>> >> http://www.hamilton-electric.com/
>> >>
>> >> I have never dealt with them, but they have been in business for a while
>> >> from the looks of the paint and such on the building...
>> >>
>> >> I think Erik found somebody out of town somewhere as well that he
ended up
>> >> going with for the work he had done on the Cabriolet..
>> >>
>> >> Cheers,
>> >>
>> >> Aaron Choate
>> >>
>> >>
>> >> On 5/9/07, Roy Holder <roy at holder3.com> wrote:
>> >> > Anybody know where to get the CD motor repaired locally?
>> >> >
>> >> >
>> >> >
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