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Re: [Spridgets] How can you kill an alternator

To: Trevor Jessie <trevor.jessie@gmail.com>
Subject: Re: [Spridgets] How can you kill an alternator
From: Rick Fisk via Spridgets <spridgets@autox.team.net>
Date: Mon, 2 Feb 2015 12:43:26 -0500
Cc: Spridgets <spridgets@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: spridgets@autox.team.net
References: <uhs59oldg0p87wd48oyvlthi.1422893820202@email.android.com> <858233E0-DBF3-469C-9836-9AEA635591BB@mac.com> <B819AEA1-3AB7-4CFA-944A-713B4F22F6E5@chartermi.net> <CAHkEVvTCBkeq7618vzFgq7NSrYb+O52nkGBab8yVJemSKdAq2g@mail.gmail.com>
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Well there's your answer.   I had to go through three alternators from AutoZ=
one before I got one that would last more than a year.   I think their "rebu=
ilding" process is not much more than clean and polish.  :-)=20

Sent from my keyboard

> On Feb 2, 2015, at 12:34 PM, Trevor Jessie <trevor.jessie@gmail.com> wrote=
:
>=20
> I'm just trying to rule out possibilities on how I'm killing so many alter=
nators.  They fail slowly.  Gradually requiring more and more rpms before th=
ey 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 produ=
ce.  The typical automotive alternator turns three times faster than the eng=
ine.  If your engine is idling at 700 rpm it's below the point where the alt=
ernator makes current and your warning light comes on.
>>=20
>> If your engine turns 6 grand the alternator is turning 18,000 rpm's!  So T=
revor, I think the answer to your question is that the bearings will fail be=
fore the electronics.  The output of an alternator is a straight line once i=
t 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=E2=80=99s and I ha=
ve 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, y=
ou are mistaken. That is the functional difference between an alternator and=
 a generator. Generator output varies with RPM (why lights can go dimmer at i=
dle on some cars), alternator does not. If I misunderstood your question, so=
rry.
>> >>
>> >> - David
>> >>
>> >>
>> >> Sent via the Samsung GALAXY S=C2=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 fas=
t can you turn an alternator before it toasts something electronic?   Is the=
re 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/lm=
acy@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 accep=
t
>> > that, I get to use a computer that works, and that pretty much does wha=
t 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/ref=
isk@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/trevo=
r.jessie@gmail.com
>=20

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div>Well there's your answer. &nbsp; I had=
 to go through three alternators from AutoZone before I got one that would l=
ast more than a year. &nbsp; I think their "rebuilding" process is not much m=
ore than clean and polish. &nbsp;:-)&nbsp;<br><br>Sent from my keyboard</div=
><div><br>On Feb 2, 2015, at 12:34 PM, Trevor Jessie &lt;<a href=3D"mailto:t=
revor.jessie@gmail.com">trevor.jessie@gmail.com</a>&gt; wrote:<br><br></div>=
<blockquote type=3D"cite"><div><div dir=3D"ltr">I'm just trying to rule out p=
ossibilities on how I'm killing so many alternators.&nbsp; They fail slowly.=
&nbsp; Gradually requiring more and more rpms before they start charging and=
 eventually they quit charging regardless on rpms.&nbsp; I'm on my fourth "r=
ebuilt" Lucas unit from a major chain autoparts store.</div><div class=3D"gm=
ail_extra"><br><div class=3D"gmail_quote">On Mon, Feb 2, 2015 at 12:05 PM, R=
ick Fisk via Spridgets <span dir=3D"ltr">&lt;<a href=3D"mailto:spridgets@aut=
ox.team.net" target=3D"_blank">spridgets@autox.team.net</a>&gt;</span> wrote=
:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-lef=
t:1px #ccc solid;padding-left:1ex">Alternators have to turn about 3000 rpm b=
efore they start to really produce.&nbsp; The typical automotive alternator t=
urns three times faster than the engine.&nbsp; If your engine is idling at 7=
00 rpm it's below the point where the alternator makes current and your warn=
ing light comes on.<br>
<br>
If your engine turns 6 grand the alternator is turning 18,000 rpm's!&nbsp; S=
o Trevor, I think the answer to your question is that the bearings will fail=
 before the electronics.&nbsp; The output of an alternator is a straight lin=
e 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>
&gt; On Feb 2, 2015, at 11:39 AM, Larry Macy via Spridgets &lt;<a href=3D"ma=
ilto:spridgets@autox.team.net">spridgets@autox.team.net</a>&gt; wrote:<br>
&gt;<br>
&gt; So how come my waring light comes on when at low RPM=E2=80=99s and I ha=
ve a GM alternator?<br>
&gt;<br>
&gt; Larry<br>
&gt;<br>
&gt;&gt; On Feb 2, 2015, at 11:17 AM, tncarnut1 via Spridgets &lt;<a href=3D=
"mailto:spridgets@autox.team.net";>spridgets@autox.team.net</a>&gt; wrote:<br=
>
&gt;&gt;<br>
&gt;&gt; If you're thinking that the output of an alternator varies with RPM=
, you are mistaken. That is the functional difference between an alternator a=
nd a generator. Generator output varies with RPM (why lights can go dimmer a=
t idle on some cars), alternator does not. If I misunderstood your question,=
 sorry.<br>
&gt;&gt;<br>
&gt;&gt; - David<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Sent via the Samsung GALAXY S=C2=AE 5, an AT&amp;T 4G LTE smartphon=
e<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; -------- Original message --------<br>
&gt;&gt; From: Trevor Jessie via Spridgets &lt;<a href=3D"mailto:spridgets@a=
utox.team.net">spridgets@autox.team.net</a>&gt;<br>
&gt;&gt; Date:02/02/2015 5:41 AM (GMT-06:00)<br>
&gt;&gt; To: Spridgets &lt;<a href=3D"mailto:spridgets@autox.team.net";>sprid=
gets@autox.team.net</a>&gt;<br>
&gt;&gt; Cc:<br>
&gt;&gt; Subject: [Spridgets] How can you kill an alternator<br>
&gt;&gt;<br>
&gt;&gt; My real question is this :&nbsp; assuming the bearings do not fail,=
 how fast can you turn an alternator before it toasts something electronic?&=
nbsp; &nbsp;Is there a huge margin, or are they engineered near their limite=
d rpm?<br>
&gt;&gt;<br>
&gt;&gt; -Trevor<br>
&gt;&gt;<br>
&gt;&gt; ------------------------<br>
&gt;&gt;<br>
&gt;&gt; <a href=3D"mailto:spridgets@autox.team.net";>spridgets@autox.team.ne=
t</a><br>
&gt;&gt;<br>
&gt;&gt; Donate: <a href=3D"http://www.team.net/donate.html"; target=3D"_blan=
k">http://www.team.net/donate.html</a><br>
&gt;&gt; Suggested annual donation: $12.75<br>
&gt;&gt;<br>
&gt;&gt; Archive: <a href=3D"http://www.team.net/archive"; target=3D"_blank">=
&gt;&gt; Forums: <a href=3D"http://www.team.net/forums"; target=3D"_blank">ht=
tp://www.team.net/forums</a><br>
&gt;&gt; Unsubscribe/Manage: <a href=3D"http://autox.team.net/mailman/option=
s/spridgets/lmacy@mac.com" target=3D"_blank">http://autox.team.net/mailman/o=
ptions/spridgets/lmacy@mac.com</a><br>
&gt;<br>
&gt; --<br>
&gt;<br>
&gt; Larry B. Macy, Ph.D.<br>
&gt; <a href=3D"mailto:macy@upenn.edu";>macy@upenn.edu</a><br>
&gt; Senior IT Program Director<br>
&gt; Neuropsychiatry Section<br>
&gt; Department of Psychiatry<br>
&gt; University of Pennsylvania<br>
&gt; 3400 Spruce St. - 1015 Gates<br>
&gt; Philadelphia, PA 19104<br>
&gt;<br>
&gt; The bottom line: Sure, there's pain in adopting the Mac. But if I accep=
t<br>
&gt; that, I get to use a computer that works, and that pretty much does wha=
t I<br>
&gt; expect and want a computer to do.<br>
&gt; Stewart Alsop<br>
&gt; <a href=3D"http://FORTUNE.com";>FORTUNE.com</a><br>
&gt; Monday, June 25, 2001<br>
&gt;<br>
&gt; ------------------------<br>
&gt;<br>
&gt; <a href=3D"mailto:spridgets@autox.team.net";>spridgets@autox.team.net</a=
><br>
&gt;<br>
&gt; Donate: <a href=3D"http://www.team.net/donate.html"; target=3D"_blank">h=
ttp://www.team.net/donate.html</a><br>
&gt; Suggested annual donation: $12.75<br>
&gt;<br>
&gt; Archive: <a href=3D"http://www.team.net/archive"; target=3D"_blank">http=
://www.team.net/archive</a><br>
&gt; Forums: <a href=3D"http://www.team.net/forums"; target=3D"_blank">http:/=
/www.team.net/forums</a><br>
</div></div>&gt; Unsubscribe/Manage: <a href=3D"http://autox.team.net/mailma=
n/options/spridgets/refisk@chartermi.net" target=3D"_blank">http://autox.tea=
m.net/mailman/options/spridgets/refisk@chartermi.net</a><br>
<span class=3D"">------------------------<br>
<br>
<a href=3D"mailto:spridgets@autox.team.net";>spridgets@autox.team.net</a><br>=

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</blockquote></div><br></div>
</div></blockquote></body></html>=

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