[Spridgets] Subject: Re: How can you kill an alternator

[Mark Haynes]

Whoops, thinking in reverse here. Thanks for catching that,Jim.
It's a good thing I don't drive like that!!!


Mark Haynes
It only goes one way-Pay it Forward


---------- Original Message ----------
From: "Jim Seippel" <aseippel at austin.rr.com>
To: "'Mark Haynes'" <haynes386 at netzero.net>
Subject: RE: [Spridgets] Subject: Re:  How can you kill an alternator
Date: Mon, 2 Feb 2015 15:28:17 -0600

Don't you mean larger pulley on the alternator and water pump and/or a
smaller pulley on the crank?
Jim

-----Original Message-----
From: Spridgets [mailto:spridgets-bounces at autox.team.net] On Behalf Of Mark
Haynes via Spridgets
Sent: Monday, February 02, 2015 2:09 PM
To: spridgets at autox.team.net
Subject: [Spridgets] Subject: Re: How can you kill an alternator

Trevor-
There is definitely a high end on the bearings' RPM for longevity, That's
why quite a few, if not most, racers put smaller pulleys on their water
pumps and alternators-or use an 'Underdrive' pulley on the crank. If you run
these two ancillaries at high RPMs for long periods of time, you get
cavitation in the water pump, which leads to overheating, and bearings do
burn out in the alternator. 


Mark Haynes
It only goes one way-Pay it Forward


Well there's your answer.   I had to go through three alternators from
AutoZone before I 
got one that would last more than a year.   I think their "rebuilding"
process 
is not much more than clean and polish.  :-) 

Sent from my keyboard

> On Feb 2, 2015, at 12:34 PM, Trevor Jessie <trevor.jessie at gmail.com>
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.
> 

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