Re: [ST] jump starts

["Richard D'Amours" <rdamours@xxxxxxxxxxxxxxx>]

My sentiments exactly...just look at the leads into the bike battery...not
much thicker than string.

I was told by the Triumph dealer that they have seen the electronics cooked
either from the donor car having a bad voltage regulator coupled with
possible revviing while charging.  Better off jump starting with the donor
car off...if you kill his battery you've got bigger problems than a flat
battery.
- ----- Original Message -----
From: "Brian D ." <brd@xxxxxxx>
To: <ST@xxxxxxxxxxxxxx>
Sent: Thursday, May 29, 2003 11:24 PM
Subject: Re: [ST] jump starts


> On Thu, May 29, 2003 at 09:18:53PM -0700, Blake Sobiloff wrote:
> > On Thursday, May 29, 2003, at 08:49  PM, Richard D'Amours wrote:
> > > as long as you jump start with the car
> > > engine off...you will be ok.
> >
> > OK, what's up with the "leave the car engine off" advice? I've never
> > had to jump-start a motorcycle, but have had the opportunity to
> > jump-start a few cars, with my car. I seem to recall that the "donor"
> > vehicle was supposed to remain running, the theory being that the
> > running vehicle's alternator would ensure that there was enough juice
> > supplied to handle the drain of both vehicles (i.e. you don't want to
> > kill the donor vehicle's battery, too!).
> >
> > What makes motorcycles different?
>
> First, a motorcycle starter doesn't need as many cranking amps to turn
> over the smaller motor.  This also means that jumping a bike won't risk
> draining the car's battery with the engine off.
>
> Second, car alternators put out high amperage.  The ST has a lot at 40A
> (IIRC), but cars can put out more than that and fry the bike's
> electrics.
>
> Laters,
> Brian<--not an EE by any stretch
> --
> Euless, TX
> '97 VFR 750 (red, of course)
> '99 Sprint ST(black, RIP)
>
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