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I had that problem on my =9266 with the same set up and ended up with =
adding an extra diode as the current was =93dirty=94 and there was some =
interesting feedback in the circuit. Third alternator worked great =
after that mod.
Eventually I ended up changing over to a GM 10si single wire for other =
reasons and did not have the same problem either.
Chris
On Feb 2, 2015, at 11:34 AM, Trevor Jessie via Spridgets =
<spridgets@autox.team.net> wrote:
> I'm just trying to rule out possibilities on how I'm killing so many =
alternators. They fail slowly. Gradually requiring more and more rpms =
before they start charging and eventually they quit charging regardless =
on rpms. I'm on my fourth "rebuilt" Lucas unit from a major chain =
autoparts store.
>=20
> On Mon, Feb 2, 2015 at 12:05 PM, Rick Fisk via Spridgets =
<spridgets@autox.team.net> wrote:
> Alternators have to turn about 3000 rpm before they start to really =
produce. The typical automotive alternator turns three times faster =
than the engine. If your engine is idling at 700 rpm it's below the =
point where the alternator makes current and your warning light comes =
on.
>=20
> If your engine turns 6 grand the alternator is turning 18,000 rpm's! =
So Trevor, I think the answer to your question is that the bearings will =
fail before the electronics. The output of an alternator is a straight =
line once it gets up to speed and stays there throughout the rpm range.
>=20
> Sent from my keyboard
>=20
> > On Feb 2, 2015, at 11:39 AM, Larry Macy via Spridgets =
<spridgets@autox.team.net> wrote:
> >
> > So how come my waring light comes on when at low RPM=92s and I have =
a GM alternator?
> >
> > Larry
> >
> >> On Feb 2, 2015, at 11:17 AM, tncarnut1 via Spridgets =
<spridgets@autox.team.net> wrote:
> >>
> >> If you're thinking that the output of an alternator varies with =
RPM, you are mistaken. That is the functional difference between an =
alternator and a generator. Generator output varies with RPM (why lights =
can go dimmer at idle on some cars), alternator does not. If I =
misunderstood your question, sorry.
> >>
> >> - David
> >>
> >>
> >> Sent via the Samsung GALAXY S=AE 5, an AT&T 4G LTE smartphone
> >>
> >>
> >> -------- Original message --------
> >> From: Trevor Jessie via Spridgets <spridgets@autox.team.net>
> >> Date:02/02/2015 5:41 AM (GMT-06:00)
> >> To: Spridgets <spridgets@autox.team.net>
> >> Cc:
> >> Subject: [Spridgets] How can you kill an alternator
> >>
> >> My real question is this : assuming the bearings do not fail, how =
fast can you turn an alternator before it toasts something electronic? =
Is there a huge margin, or are they engineered near their limited rpm?
> >>
> >> -Trevor
> >>
> >> ------------------------
> >>
> >> spridgets@autox.team.net
> >>
> >> Donate: http://www.team.net/donate.html
> >> Suggested annual donation: $12.75
> >>
> >> Archive: http://www.team.net/archive
> >> Forums: http://www.team.net/forums
> >> Unsubscribe/Manage: =
http://autox.team.net/mailman/options/spridgets/lmacy@mac.com
> >
> > --
> >
> > Larry B. Macy, Ph.D.
> > macy@upenn.edu
> > Senior IT Program Director
> > Neuropsychiatry Section
> > Department of Psychiatry
> > University of Pennsylvania
> > 3400 Spruce St. - 1015 Gates
> > Philadelphia, PA 19104
> >
> > The bottom line: Sure, there's pain in adopting the Mac. But if I =
accept
> > that, I get to use a computer that works, and that pretty much does =
what I
> > expect and want a computer to do.
> > Stewart Alsop
> > FORTUNE.com
> > Monday, June 25, 2001
> >
> > ------------------------
> >
> > spridgets@autox.team.net
> >
> > Donate: http://www.team.net/donate.html
> > Suggested annual donation: $12.75
> >
> > Archive: http://www.team.net/archive
> > Forums: http://www.team.net/forums
> > Unsubscribe/Manage: =
http://autox.team.net/mailman/options/spridgets/refisk@chartermi.net
> ------------------------
>=20
> spridgets@autox.team.net
>=20
> Donate: http://www.team.net/donate.html
> Suggested annual donation: $12.75
>=20
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe/Manage: =
http://autox.team.net/mailman/options/spridgets/trevor.jessie@gmail.com
>=20
> ------------------------
>=20
> spridgets@autox.team.net
>=20
> Donate: http://www.team.net/donate.html
> Suggested annual donation: $12.75
>=20
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe/Manage: =
http://autox.team.net/mailman/options/spridgets/cmanuel@wi.rr.com
--Apple-Mail=_B6BCAEC8-7F26-4F19-86AA-AE11B2B19E16
Content-Transfer-Encoding: quoted-printable
charset=windows-1252
<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dwindows-1252"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">I had =
that problem on my =9266 with the same set up and ended up with adding =
an extra diode as the current was =93dirty=94 and there was some =
interesting feedback in the circuit. Third alternator worked great =
after that mod.<div><br></div><div>Eventually I ended up changing over =
to a GM 10si single wire for other reasons and did not have the =
same problem =
either.</div><div><br></div><div>Chris</div><div><br></div><div><br></div>=
<div><br></div><div><br></div><div><div><div><div>On Feb 2, 2015, at =
11:34 AM, Trevor Jessie via Spridgets <<a =
href=3D"mailto:spridgets@autox.team.net";>spridgets@autox.team.net</a>> =
wrote:</div><br class=3D"Apple-interchange-newline"><blockquote =
type=3D"cite"><div dir=3D"ltr">I'm just trying to rule out possibilities =
on how I'm killing so many alternators. They fail slowly. =
Gradually requiring more and more rpms before they start charging and =
eventually they quit charging regardless on rpms. I'm on my fourth =
"rebuilt" Lucas unit from a major chain autoparts store.</div><div =
class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Mon, Feb 2, 2015 =
at 12:05 PM, Rick Fisk via Spridgets <span dir=3D"ltr"><<a =
href=3D"mailto:spridgets@autox.team.net"; =
target=3D"_blank">spridgets@autox.team.net</a>></span> =
wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 =
.8ex;border-left:1px #ccc solid;padding-left:1ex">Alternators have to =
turn about 3000 rpm before they start to really produce. The =
typical automotive alternator turns three times faster than the =
engine. If your engine is idling at 700 rpm it's below the point =
where the alternator makes current and your warning light comes on.<br>
<br>
If your engine turns 6 grand the alternator is turning 18,000 =
rpm's! So Trevor, I think the answer to your question is that the =
bearings will fail before the electronics. The output of an =
alternator is a straight line once it gets up to speed and stays there =
throughout the rpm range.<br>
<br>
Sent from my keyboard<br>
<div><div class=3D"h5"><br>
> On Feb 2, 2015, at 11:39 AM, Larry Macy via Spridgets <<a =
href=3D"mailto:spridgets@autox.team.net";>spridgets@autox.team.net</a>> =
wrote:<br>
><br>
> So how come my waring light comes on when at low RPM=92s and I have =
a GM alternator?<br>
><br>
> Larry<br>
><br>
>> On Feb 2, 2015, at 11:17 AM, tncarnut1 via Spridgets <<a =
href=3D"mailto:spridgets@autox.team.net";>spridgets@autox.team.net</a>> =
wrote:<br>
>><br>
>> If you're thinking that the output of an alternator varies with =
RPM, you are mistaken. That is the functional difference between an =
alternator and a generator. Generator output varies with RPM (why lights =
can go dimmer at idle on some cars), alternator does not. If I =
misunderstood your question, sorry.<br>
>><br>
>> - David<br>
>><br>
>><br>
>> Sent via the Samsung GALAXY S=AE 5, an AT&T 4G LTE =
smartphone<br>
>><br>
>><br>
>> -------- Original message --------<br>
>> From: Trevor Jessie via Spridgets <<a =
href=3D"mailto:spridgets@autox.team.net";>spridgets@autox.team.net</a>><=
br>
>> Date:02/02/2015 5:41 AM (GMT-06:00)<br>
>> To: Spridgets <<a =
href=3D"mailto:spridgets@autox.team.net";>spridgets@autox.team.net</a>><=
br>
>> Cc:<br>
>> Subject: [Spridgets] How can you kill an alternator<br>
>><br>
>> My real question is this : assuming the bearings do not =
fail, how fast can you turn an alternator before it toasts something =
electronic? Is there a huge margin, or are they engineered =
near their limited rpm?<br>
>><br>
>> -Trevor<br>
>><br>
>> ------------------------<br>
>><br>
>> <a =
href=3D"mailto:spridgets@autox.team.net";>spridgets@autox.team.net</a><br>
>><br>
>> Donate: <a href=3D"http://www.team.net/donate.html"; =
target=3D"_blank">http://www.team.net/donate.html</a><br>
>> Suggested annual donation: $12.75<br>
>><br>
>> Archive: <a href=3D"http://www.team.net/archive"; =
target=3D"_blank">http://www.team.net/archive</a><br>
>> Forums: <a href=3D"http://www.team.net/forums"; =
target=3D"_blank">http://www.team.net/forums</a><br>
>> Unsubscribe/Manage: <a =
href=3D"http://autox.team.net/mailman/options/spridgets/lmacy@mac.com"; =
target=3D"_blank">http://autox.team.net/mailman/options/spridgets/lmacy@ma=
c.com</a><br>
><br>
> --<br>
><br>
> Larry B. Macy, Ph.D.<br>
> <a href=3D"mailto:macy@upenn.edu";>macy@upenn.edu</a><br>
> Senior IT Program Director<br>
> Neuropsychiatry Section<br>
> Department of Psychiatry<br>
> University of Pennsylvania<br>
> 3400 Spruce St. - 1015 Gates<br>
> Philadelphia, PA 19104<br>
><br>
> The bottom line: Sure, there's pain in adopting the Mac. But if I =
accept<br>
> that, I get to use a computer that works, and that pretty much does =
what I<br>
> expect and want a computer to do.<br>
> Stewart Alsop<br>
> <a href=3D"http://FORTUNE.com";>FORTUNE.com</a><br>
> Monday, June 25, 2001<br>
><br>
> ------------------------<br>
><br>
> <a =
href=3D"mailto:spridgets@autox.team.net";>spridgets@autox.team.net</a><br>
><br>
> Donate: <a href=3D"http://www.team.net/donate.html"; =
target=3D"_blank">http://www.team.net/donate.html</a><br>
> Suggested annual donation: $12.75<br>
><br>
> Archive: <a href=3D"http://www.team.net/archive"; =
target=3D"_blank">http://www.team.net/archive</a><br>
> Forums: <a href=3D"http://www.team.net/forums"; =
target=3D"_blank">http://www.team.net/forums</a><br>
</div></div>> Unsubscribe/Manage: <a =
href=3D"http://autox.team.net/mailman/options/spridgets/refisk@chartermi.n=
et" =
target=3D"_blank">http://autox.team.net/mailman/options/spridgets/refisk@c=
hartermi.net</a><br>
<span class=3D"">------------------------<br>
<br>
<a =
href=3D"mailto:spridgets@autox.team.net";>spridgets@autox.team.net</a><br>
<br>
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<br>
Archive: <a href=3D"http://www.team.net/archive"; =
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</span>Unsubscribe/Manage: <a =
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l.com" =
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essie@gmail.com</a><br>
</blockquote></div><br></div>
------------------------<br><br><a =
href=3D"mailto:spridgets@autox.team.net";>spridgets@autox.team.net</a><br><=
br>Donate: http://www.team.net/donate.html<br>Suggested annual donation: =
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ckquote></div><br></div></div></body></html>=
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