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Date: Wed, 24 Jun 2009 08:17:14 -0700
Message-ID: <1c23473f0906240817l7939b06h12c28f39e19cadee@mail.gmail.com>
Subject: Re: [FlyRotary] Re: Overvoltage solved - tip to remember if yours 
	goes bad
From: David Leonard <wdleonard@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Content-Type: multipart/alternative; boundary=0016e64618a426601d046d199ac9

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On Tue, Jun 23, 2009 at 9:27 AM, Al Gietzen <ALVentures@cox.net> wrote:

>  *Subject:* [FlyRotary] Overvoltage solved - tip to remember if yours goe=
s
> bad
>
>
>
> I am pretty sure I solved my overvoltage issue.  I drowned the alternator
> with electrical contact cleaner and after it dried I started it up.  Volt=
age
> was now reading 14.0-14.2 volts and it stayed that way throughout a coupl=
e
> of flights.  That is down from 14.5 to 14.8 volts which was setting off t=
he
> alarm on the previous flight (verified with 2 volt meters.
>
> Hi, Dave;
>
>
>
> I=92m trying to figure how the contact cleaner affects the output voltage=
.
> You know; typical engineer, I don=92t just want to know it worked, I want=
 to
> know WHY it worked. The only contacts in there are the brushes; which sho=
uld
> not affect the voltage regulator.  Maybe there was a coating of dirt on t=
he
> regulator which made it run hotter, which could affect the voltage.  But
> when I had a similar problem, and replaced the regulator, I didn=92t find=
 the
> one I removed to be dirty.
>
>
>
> Be interesting to see if the fix continues.
>
>
>
> Al G
>
>
>
> P.S.  Getting the smoke system installed?
>

You got me there Al.  I cant even spell double E and have no idea how they
make magic smoke.  I could very well have been only hapenstance.  I did fly
for almost 3 hours on Sunday giving rides to friends from out of town, and
it was fight there at 14.0 volts the whole time.  On the other hand, the
voltage was only elevated for a few minutes.  Maybe there was never really =
a
problem or it is going to be very slow onset.

But I still say contact cleaner is magic smoke in a can....    :-)

--=20
David Leonard  (working on home-brewed smoke system)

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net

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<br><br><div class=3D"gmail_quote">On Tue, Jun 23, 2009 at 9:27 AM, Al Giet=
zen <span dir=3D"ltr">&lt;<a href=3D"mailto:ALVentures@cox.net">ALVentures@=
cox.net</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D=
"border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padd=
ing-left: 1ex;">












<div link=3D"blue" vlink=3D"blue" lang=3D"EN-US">

<div>

<p style=3D"margin-left: 0.5in;"><b><font size=3D"2" face=3D"Tahoma"><span =
style=3D"font-size: 10pt; font-family: Tahoma; font-weight: bold;">Subject:=
</span></font></b><font size=3D"2" face=3D"Tahoma"><span style=3D"font-size=
: 10pt; font-family: Tahoma;"> [FlyRotary]
Overvoltage solved - tip to remember if yours goes bad</span></font></p>

<p style=3D"margin-left: 0.5in;"><font size=3D"3" face=3D"Times New Roman">=
<span style=3D"font-size: 12pt;">=A0</span></font></p>

<p style=3D"margin-left: 0.5in;"><font size=3D"3" face=3D"Times New Roman">=
<span style=3D"font-size: 12pt;">I am pretty sure I solved my overvoltage i=
ssue.=A0
I drowned the alternator with electrical=A0contact cleaner and after it
dried I started it up.=A0 Voltage was now reading 14.0-14.2 volts and it
stayed that way throughout a couple of flights.=A0 That is down from 14.5 t=
o
14.8 volts=A0which was=A0setting off the alarm on the previous flight
(verified with 2 volt meters<font color=3D"blue"><span style=3D"color: blue=
;">.</span></font></span></font></p>

<p><font color=3D"blue" size=3D"2" face=3D"Verdana"><span style=3D"font-siz=
e: 11pt; font-family: Verdana; color: blue;">Hi, </span></font><font color=
=3D"blue" size=3D"2" face=3D"Verdana"><span style=3D"font-size: 11pt; font-=
family: Verdana; color: blue;">Dave</span></font><font color=3D"blue" size=
=3D"2" face=3D"Verdana"><span style=3D"font-size: 11pt; font-family: Verdan=
a; color: blue;">;</span></font></p>


<p><font color=3D"blue" size=3D"2" face=3D"Verdana"><span style=3D"font-siz=
e: 11pt; font-family: Verdana; color: blue;">=A0</span></font></p>

<p><font color=3D"blue" size=3D"2" face=3D"Verdana"><span style=3D"font-siz=
e: 11pt; font-family: Verdana; color: blue;">I=92m trying to figure how the
contact cleaner affects the output voltage. You know; typical engineer, I d=
on=92t
just want to know it worked, I want to know WHY it worked. The only contact=
s in
there are the brushes; which should not affect the voltage regulator. =A0Ma=
ybe
there was a coating of dirt on the regulator which made it run hotter, whic=
h
could affect the voltage. =A0But when I had a similar problem, and replaced
the regulator, I didn=92t find the one I removed to be dirty.</span></font>=
</p>

<p><font color=3D"blue" size=3D"2" face=3D"Verdana"><span style=3D"font-siz=
e: 11pt; font-family: Verdana; color: blue;">=A0</span></font></p>

<p><font color=3D"blue" size=3D"2" face=3D"Verdana"><span style=3D"font-siz=
e: 11pt; font-family: Verdana; color: blue;">Be interesting to see if the f=
ix
continues.</span></font></p>

<p><font color=3D"blue" size=3D"2" face=3D"Verdana"><span style=3D"font-siz=
e: 11pt; font-family: Verdana; color: blue;">=A0</span></font></p>

<p><font color=3D"blue" size=3D"2" face=3D"Verdana"><span style=3D"font-siz=
e: 11pt; font-family: Verdana; color: blue;">Al G</span></font></p>

<p><font color=3D"blue" size=3D"2" face=3D"Verdana"><span style=3D"font-siz=
e: 11pt; font-family: Verdana; color: blue;">=A0</span></font></p>

<p><font color=3D"blue" size=3D"2" face=3D"Verdana"><span style=3D"font-siz=
e: 11pt; font-family: Verdana; color: blue;">P.S.=A0 Getting the smoke syst=
em
installed?</span></font></p>

</div>

</div>


</blockquote></div><br>You got me there Al.=A0 I cant even spell double E a=
nd have no idea how they make magic smoke.=A0 I could very well have been o=
nly hapenstance.=A0 I did fly for almost 3 hours on Sunday giving rides to =
friends from out of town, and it was fight there at 14.0 volts the whole ti=
me.=A0 On the other hand, the voltage was only elevated for a few minutes.=
=A0 Maybe there was never really a problem or it is going to be very slow o=
nset.<br>
<br>But I still say contact cleaner is magic smoke in a can....=A0=A0=A0 :-=
)<br clear=3D"all"><br>-- <br>David Leonard=A0 (working on home-brewed smok=
e system)<br><br>Turbo Rotary RV-6 N4VY<br><a href=3D"http://N4VY.RotaryRos=
ter.net">http://N4VY.RotaryRoster.net</a><br>
<a href=3D"http://RotaryRoster.net">http://RotaryRoster.net</a><br>

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