Re: [St] [ST]alternator troubles

["marc Ve" <daytona955.marc@xxxxxxxxx>]

It must be the BRG colour........red trumpets never do that...........


just pulling you leg - no idea at all, sound slike a short somewhere.



cheers


marc

On Mon, May 12, 2008 at 3:34 PM, Markus <daftspeed@xxxxxxxxx> wrote:

> Hi Frederic,
>
> What kind of accessories are you using? Loads of gadgets attached and it
> can
> be possible that the alternator can't charge the battery anymore.
> Especially
> while riding at a slow pace.
>
> Never heard of anyone with alternatorproblems on a Trumpet before. Are you
> sure that the wiring is all intact?
>
> Besides that, In the last years I found out that:
> Filling a maintenance free battery with water will damage it. Only normal
> batteries can be refilled!
> Charging a maintenance free battery with the wrong gear (charger) will
> also
> damage it.
> Jumpstarting batteries will shorten their lifespan, but is a good solution
> when nothing else is at hand.
>
> Please inform and I'll see what I can do.
>
> --Markus
>
>
>
> -----Oorspronkelijk bericht-----
> Van: st-bounces@xxxxxxxxxxxxxxxxxxxx
> [mailto:st-bounces@xxxxxxxxxxxxxxxxxxxx] Namens Frederic NIZERY
> Verzonden: maandag 12 mei 2008 11:50
> Aan: ST
> Onderwerp: [St] [ST]alternator troubles
>
> Hi everyone,
>
> I need collective knowledge and help.
>
> -short story-
> I have alternator/regulator problems. For people that have a 02 engine
> or similar (955i) with the alternator at the end of the crankshaft  on
> the left hand side:
> - I would appreciate a lot if you could spend some time measuring the
> battery voltage while idling, and then at around 2000 rpm.
> - can any one confirm it's not an alternator without excitation input
> but instead a magnetic wheel (only a stator is wired and
> a permanent magnet as rotor)?
> - who has already experiment charging problem on a 955i (from 2002 on
> 955 engine). What was the problem, the cause and the cure?
>
> -long story-
> One week ago, we went for a day trip. I noticed after one stop that the
> odometer stopped working. I was still thinking that the sensor was
> playing tricks.
> One hour or so after the bike stalled. Impossible to crank up. Turn out
> the battery was 11.5v. I was in the
> middle of nowhere. The first thing I was thinking about was: alternator
> shot. I managed finally to find some good soul with a battery charger.
> Pushed the bike to this nice guy yard. Took of the battery off. It
> needed some water. Not normal for a maintenance free one. Added some
> water and charged up the battery for one hour or so. Got back the
> battery on the bike and jumped started the bike for the sake of the
> battery.
> At that time I was convinced the battery was the only one to blame. We
> headed back home directly 'cause it was late already. Me and my wife
> were pretty concerned about being able to do the 200 kms back. Half the
> way back we stopped for a technical pit stop and I made the huge mistake
> to stop the engine. Here again, unable to start up. hopfully we were in
> a small village. Obliged to wander form home to an other to get jump
> started.
> Finally I found the guy, pushed the bike again jump started and on the
> read again.
> Arriving finally near home I was obliged to rev up while idling to
> prevent the engine to stall at idle.
>
> The day after I changed the battery think: This one was really crap,
> only two years. Checking the voltage while idling, it was between 13.5
> and 14V.
> At this time I just charged the battery all the night long with
> 0.8Amperes.
>
> The we-end after was a 4 days one. We planed a long trip to Burgundy area.
> On our way we stopped for lunch. At the time to restart the engine I
> noticed some hesitation. I didn't worried too much. I was wrong.
> 2 hours later, we stopped for gas. Impossible to start the engine up
> after that. Again. I was desperate. End of the week-end for sure.
> This time I add a voltmeter and wires for jump starting. Fortunately one
> guy in a pretty Mercedes was washing his car nearby. He was reluctant
> to jump start, concerned about damaging electronic, but finally he
> accepted to help the poor motorcyclist. Once running the voltmeter
> indicated no sign
> of charging and again the voltage was around 11.5V.
> The Mercedes driver indicated us a (the) bike dealer, and an hotel. We
> managed to get to the bike dealer w/o stopping the engine or stalling.
> I planed to buy a battery charger, charge the battery the night long and
> get  back home straight w/o stop (400km) except for gas.
>
> The dealer had no more battery charger, but offer to sell us one that he
> used in the work shop. We accepted the deal. So glad to have a solution.
> Jump started
> again to go to the hotel.
> We charged the battery during the night, and get back straight. We had
> no problem on our way back.
> The big surprise was to discover once arrived that the battery was not
> discharged. Now I am pretty puzzled.
>
> But when the engine is running the voltage is below 13V even at 2000rpm.
> I read on the web that for such an alternator w/ magnetic whell it's
> normal to
> have less than 13V when idling, but surely not at 200rpm. I cleaned the
> connector between the regulator and the alternator (three yellow wires).
> Those three wires
> tends to show that it's a triangle triphase mounting. I didn't dig much
> up to now.
>
> That is two trips wrecked because of an alternator. Damn it. The one in
> burgundy was so promising. We stopped 50 kms from it.
>
> Any input very welcome.
>
> Fred ST 02 BRG not charging and tired of pushing the bike.
>
>
>
>
>
>
>
>
>
>
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