Re: Relays

[rennsport@xxxxxxxxx]

On Oct 5, 2004, at 8:26 AM, James H. Nazarian, Ph. D. wrote:

>>
>
> That is the description of a classical alternator failure. The 
> alternator failed but the battery continued to supply electricity to 
> the bike until it was exhausted. Once that happened, there was no 
> electrical source, and the engine ceased to operate. If the battery 
> alone goes dead, the engine will continue to operate from the 
> alternator-produced electrons. The jump start gets the engine started, 
> the alternator then produces electrical power to operate electrical 
> equipment and to recharge the battery.
>
>

The alternator was fine. The battery died from too much short city 
commutes. Once the new battery was installed the bike was fine provided 
I rode the long way home and added a little interstate speed to give it 
time to charge the battery.


How is the alternator going to produce a voltage if the stator field is 
not energized? There are no permanent magnets in an alternator. sure, 
on a generator, you can run all day long with out the battery. It has 
permanent magnets and as the rotor turns it cuts the magnetic field 
which induces current flow in the rotor winding.


Yes the alternator is suppose to be self sustaining, but, if the output 
of the alternator is not enough to run the engine and the lights, the 
stator field will collapse.


Robert

04 Yamaha FZ6

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