Re: jumping a motorcycle battery (I know dumb ?)

Kitchen Man <nannerbac@xxxxxxxxx> wrote in
news:b7dvg1dul414jlfbveq74pgfa6rut48tm2@xxxxxxx:

> On Fri, 26 Aug 2005 12:38:11 GMT, "R. Pierce Butler"
> <spamsucks@xxxxxxxxxx> wrote:
>
>>Kitchen Man <nannerbac@xxxxxxxxx> wrote in
>>news:9r5tg1dj9qgfn6feccbv2kpafpf9uiq64a@xxxxxxx:
>>
>>> On 25 Aug 2005 08:50:15 -0700, "krusty kritter" <kriyamanna@xxxxxxx>
>>> wrote:
>>>
>>>>A typical 500 watt motorbike starter is going to draw about 40 to 50
>>>>amps, depending on the available voltage. You can push that much
>>>>current through a 10 or 12 gauge jumper cable. Series-wound DC motors
>>>>like a starter will overspeed to destruction if they aren't connected
>>>>to a mechanical load that slows them down.
>>>>
>>
>>
>>Holy Moly there KM! Someone that actually knows what a series wound dc
>>motor is!! The old Mopar starters were series wound. What kept them
>>from overspeeding was a bucking coil. At least that is what I remember.
>> I am lucky in that I can count on one hand the number of times I have
>>had to work on one.
>>
> Well, to be fair, it was krusty that penned the paragraph, and I was
> speaking in general, not specifically about series-wound DC motors.
> An AC generator, with which I am more familiar, will also spin itself
> to pieces if it loses its load while at speed. As another load-loss
> for-instance, think about what happens to your motorbike if you pop it
> into neutral without letting off the throttle.
>

If you did that with my first bike you would have enough time to pop it
back into gear without damage. On my current bike I am afraid you would
overrev it in about .15 seconds.

pierce
.

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