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                           AeroElectric-List Digest Archive
                                      ---
                     Total Messages Posted Mon 12/09/02: 4
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Today's Message Index:
----------------------
 
     1. 12:56 PM - PTT wiring  (Neil McLeod)
     2. 05:37 PM - citabria triiong overvoltage relay  (Joe and Carole Tuminello)
     3. 07:45 PM - Re: citabria triiong overvoltage relay  (David Swartzendruber)
     4. 09:15 PM - Re: citabria triiong overvoltage relay  (Matt Prather)
 
 
 
________________________________  Message 1  _____________________________________


Time: 12:56:00 PM PST US
From: "Neil McLeod" <bedrock@theriver.com>
Subject: AeroElectric-List: PTT wiring

--> AeroElectric-List message posted by: "Neil McLeod" <bedrock@theriver.com>

Looking for suggestions on how to and what kind of wire to use to wire the PTT's
on the sticks of my RV-7. Any tricks to providing for the slack at the bottom
of the sticks to allow movement without interference or fatiguing the wire?

Thanks,

Neil McLeod






________________________________  Message 2  _____________________________________


Time: 05:37:23 PM PST US
From: Joe and Carole Tuminello <mouseysf@pacbell.net>
Subject: AeroElectric-List: citabria triiong overvoltage relay

--> AeroElectric-List message posted by: Joe and Carole Tuminello <mouseysf@pacbell.net>

I have had the same problem in my citabria as reported on July 23,2001
> by wx30. The ampmeter jumps up and overvolts cuttign off the alternator.
> Resest it and it does it again and again. I have a new alternator,
>only 3 years old. The battery is 3 years old also and has plenty of
> cranking power. Someone is trying to convince me the battery has a
> shorted cell.,
Before I end up replacing the battery and voltage regulator, does anyone have any
ideas?
> thanks joe
>
> 






________________________________  Message 3  _____________________________________


Time: 07:45:05 PM PST US
From: "David Swartzendruber" <dswartzendruber@earthlink.net>
Subject: Re: AeroElectric-List: citabria triiong overvoltage relay

--> AeroElectric-List message posted by: "David Swartzendruber" <dswartzendruber@earthlink.net>

Does it only do it when you turn on the alternator switch?  Do you have a
variable voltage power supply that you could use to bench test the voltage
regulator?

David Swartzendruber
Wichita
>
> I have had the same problem in my citabria as reported on July 23,2001
> > by wx30. The ampmeter jumps up and overvolts cuttign off the alternator.
> > Resest it and it does it again and again. I have a new alternator,
> >only 3 years old. The battery is 3 years old also and has plenty of
> > cranking power. Someone is trying to convince me the battery has a
> > shorted cell.,
> Before I end up replacing the battery and voltage regulator, does anyone
have any ideas?
> > thanks joe






________________________________  Message 4  _____________________________________


Time: 09:15:43 PM PST US
From: Matt Prather <mprather@spro.net>
Subject: Re: AeroElectric-List: citabria triiong overvoltage relay

--> AeroElectric-List message posted by: Matt Prather <mprather@spro.net>

Do you have an AC battery charger?  Have you tried to charge the
battery?  Do you have a voltmeter.  With everything turned off, what
voltage do you see across the battery.  If you have a shorted cell, I
believe the battery will show about 1.2V below what a normal battery
shows.  Is it a flooded cell battery?

I believe that the only time the OV module trips is when the voltage
across it is above the setpoint.  A shorted cell shouldn't cause this
overvoltage condition.  I believe you need to look elsewhere.  It sounds
like either a bad regulator, a bad OV module, or possibly, low voltage
to the sense lead for the regulator (a resistive connection)  Or maybe a
bad ground to the regulator.  If the regulator can't see the full 
voltage of
the system, it will attempt increase the output of the alternator.  Once it
has increased the output of the alternator above the trip point for the OV
module, it gets shut down.

Not sure if that helps.

Matt Prather
N34RD

Joe and Carole Tuminello wrote:

>--> AeroElectric-List message posted by: Joe and Carole Tuminello <mouseysf@pacbell.net>
>
>I have had the same problem in my citabria as reported on July 23,2001
>  
>
>>by wx30. The ampmeter jumps up and overvolts cuttign off the alternator.
>>Resest it and it does it again and again. I have a new alternator,
>>only 3 years old. The battery is 3 years old also and has plenty of
>>cranking power. Someone is trying to convince me the battery has a
>>shorted cell.,
>>    
>>
>Before I end up replacing the battery and voltage regulator, does anyone have
any ideas?
>  
>
>>thanks joe
>>
>>
>>    
>>
>
>
>  
>