Herbert
In order to change the rotation of a non permanent magnet DC motor you
have to reverse the connections to either the field winding or the
armature. You might find that the leads to the field winding are
accessible enough to re-route them.
This should be OK but the motor might not be quite so efficient because
sometimes the brush angle is set to be optimum in one direction.
I don't believe that rewinding the armature is a realistic suggestion.
However the field windings could be rewound in the opposite direction
but it is simpler just to reverse the leads.
Regards
>
>I believe you will have to have the armature rewound the opposite
>direction. That will cost about 100 bucks ++ at your local auto
>electrical repair shop. You can't just reverse the leads....
>
>Alan
>
>On 7/14/10, Herbert Miller <hgmiller3@qwest.net> wrote:
>> I need some help.
>>
>> I disassembled my heater blower, BJ8, and found that the squirrel cage has
>> some damaged blades, (chewed by a resident rodent in a previous life).
>> Replacements do not seem to be available.No problem, I have a couple of
>> excellent spares for my MGB. Exact dimensional match. Only one problem,
>> they are designed for opposite rotation. So here is the question. Is it
>> possible to change the rotation of the blower motor. I know that changing
>> the polarity of the leads makes no difference.
>>
--
John Harper
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