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Re: [Bricklin] Electrical Questions Alternator and Air system

To: <Bricklin@autox.team.net>, "John T. Blair" <jblair1948@cox.net>
Subject: Re: [Bricklin] Electrical Questions Alternator and Air system
From: "Greg Schroeder" <gschroeder@comcast.net>
Date: Fri, 11 Jun 2010 10:08:32 -0500
John,

I am running about 700-800 RPM's in park right now.  It will idle at 600 
with the AC, in gear and remain running while at a stop sign.

I will have to check when the engine revs up.  Based on my LED monitor I 
believe it does rise some.

Greg 0036
----- Original Message ----- 
From: "John T. Blair" <jblair1948@cox.net>
To: <Bricklin@autox.team.net>
Sent: Friday, June 11, 2010 8:14 AM
Subject: Re: [Bricklin] Electrical Questions Alternator and Air system


> At 09:13 PM 6/10/2010, Greg Schroeder wrote:
>
> >New alternator passed at the parts store and seems to be working in the 
> >car,
> >but I am seeing around 12 volts and I was expecting higher.
>
> Greg,
>
> What was your engine rpm?  If you were idling at about 750, that is about 
> right.
> Usually, the older cars alt. didn't put out until the rpms were over 1000 
> rpms.
> So try increasing the rpm just a little and see if the voltage doesn't go 
> up.
>
> >One issue I am seeing is when starting the car there is a large drain on 
> >the
> >battery voltage.  Sometimes after one or two failed starts it seems
> to almost
> >drain the battery.
>
> If you are watching the voltmeter when cranking the engine, yes the 
> voltage
> will go down a lot (relatively), some place around 10 to 11 volts.  This 
> is due
> to the large current drain of the starter, and the internal resistance in 
> the battery
> and terminal connections.
>
> >I have installed a mini starter a while back and I was wondering if the 
> >mini
> >starter has a larger power draw than the standard.  I have search
> the internet
> >and it seems to always point to the mini as having more torque and less
> >weight, but I cannot find any information to compare the power draw.....
>
> Usually these due draw less current.  But the old style starters used to 
> draw
> something like 200 to 400 amps.  The new reduction starters still 
> something
> like 75-100 A.  Which is quite a lot.  If I remember correctly, the 
> original
> alternator on the B is rated at something like 65 A.
>
> John
> John T. Blair  WA4OHZ     email:  jblair1948@cox.net
> Va. Beach, Va
> Phone:  (757) 495-8229
>
>           48 TR1800    48 #4 Midget    65 Morgan 4/4 Series V (B1106)
>      75 Bricklin SV1 (#0887)    77 Spitfire    71 Saab Sonett III
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>
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