Sender: <marv@lancaironline.net> (Marvin Kaye)
To: lml
Date: Fri, 11 Jul 2003 16:06:29 -0400
Message-ID: <redirect-2472226@logan.com>
From: Billhogarty@aol.com
Subject: Re: [LML] Alternator Sizing
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For Art Bertolina - 

Art:  My stock 12V alternator is an ElectroSystems # ALX-9424  alternator.  
It is not marked with an amp rating???? so I called TCM tech support and they 
told me that it was rated 70 amps.  

FWIW, I have seen over 60 amps on the Vision Microsystems postflight memory 
which makes me say that I would not be comfortable taking this much out of the 
alternator capacity on a routine basis.  However, I was running the A/C and 
the pitot heat at the same time(along with everything else, just to see what the 
'system' would draw). 

Someone asked how an alternator (on a TSIO 550) can fail.   Please consider 
the rubber coupling on the alternator drive.  Once this puppy starts to slip, 
your alternater is history and it costs about $1250 to replace(unless you go 
direct to the LORD folks).  Remember, you can buy a new alternator from TCM ( 
approx 
$ 1300)  BUT it does not come with the coupling ( or HUB as it is called)

Unfortunately, I do not know where to purchase a higher output alternator. If 
you could find one to match the mounting pad and the gear drive, I wonder 
what effect this device might have on you engine warrenty????

One final thought;  at the back of my TCM  engine parts manual, there is an 
optional alternator bracket for a belt driven alternator.  By adding a belt 
driven alternator to your gear driven alternator, you might be able to have your 
cake and...........!

Regards, Bill Hogarty

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<HTML><FONT FACE=3Darial,helvetica><FONT  COLOR=3D"#400080" SIZE=3D3 FAMILY=
=3D"SCRIPT" FACE=3D"Comic Sans MS" LANG=3D"0">For Art Bertolina - <BR>
<BR>
Art:&nbsp; My stock 12V alternator is an ElectroSystems # ALX-9424&nbsp; alt=
ernator.&nbsp; It is not marked with an amp rating???? so I called TCM tech=20=
support and they told me that it was rated 70 amps.&nbsp; <BR>
<BR>
FWIW, I have seen over 60 amps on the Vision Microsystems postflight memory=20=
which makes me say that I would not be comfortable taking this much out of t=
he alternator capacity on a routine basis.&nbsp; However, I was running the=20=
A/C and the pitot heat at the same time(along with everything else, just to=20=
see what the 'system' would draw). <BR>
<BR>
Someone asked how an alternator (on a TSIO 550) can fail.&nbsp;&nbsp; Please=
 consider the rubber coupling on the alternator drive.&nbsp; Once this puppy=
 starts to slip, your alternater is history and it costs about $1250 to repl=
ace(unless you go direct to the LORD folks).&nbsp; Remember, you can buy a n=
ew alternator from TCM ( approx <BR>
$ 1300)&nbsp; BUT it does not come with the coupling ( or HUB as it is calle=
d)<BR>
<BR>
Unfortunately, I do not know where to purchase a higher output alternator. I=
f you could find one to match the mounting pad and the gear drive, I wonder=20=
what effect this device might have on you engine warrenty????<BR>
<BR>
One final thought;&nbsp; at the back of my TCM&nbsp; engine parts manual, th=
ere is an optional alternator bracket for a belt driven alternator.&nbsp; By=
 adding a belt driven alternator to your gear driven alternator, you might b=
e able to have your cake and...........!<BR>
<BR>
Regards, Bill Hogarty</FONT></HTML>

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