Subject: [TR] voltage regulator

From: "dave n" <[email-masked]>
Date: Fri, 3 Jul 2015 16:20:58 -0500

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on a 57 tr3 =E2=80=93 it looks like it is held in by two bolts?  I =
don=E2=80=99t see anything in the moss catalog nor the manual.  =
what=E2=80=99s the correct way to bolt it in?
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<DIV>on a 57 tr3 =E2=80=93 it looks like it is held in by two =
bolts?&nbsp; I don=E2=80=99t see=20
anything in the moss catalog nor the manual.&nbsp; what=E2=80=99s the =
correct way to=20
bolt it in?</DIV></DIV></DIV></BODY></HTML>

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From: "Randall" <[email-masked]>
Date: Fri, 3 Jul 2015 15:09:43 -0700

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> on a 57 tr3 - it looks like it is held in by two bolts?  I
> don't see anything in the moss catalog nor the manual. 
> what's the correct way to bolt it in?
> 

Two screws yes, but they have unusual threads and heads.  I don't know of a source for new ones.   Might be able to make do with a
#10 sheet metal screw, though, may be something like this <http://www.mcmaster.com/?m=true#93406a257/=xwaauj> .  They thread into a
clip that pushes into a large hole in the bulkhead; the clips are available from TRF.

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<P><FONT face=3DArial>&gt; on a 57 tr3 &#8211; it looks like it is held =
in by two=20
bolts?&nbsp; I<BR>&gt; don&#8217;t see anything in the moss catalog nor =
the=20
manual.&nbsp;<BR>&gt; what&#8217;s the correct way to bolt it =
in?<BR>&gt; </FONT></P>
<P><FONT face=3DArial>Two screws yes, but they have unusual threads and=20
heads.&nbsp; I don't know of a source for new ones.&nbsp;&nbsp; Might be =
able to=20
make do with a #10 sheet&nbsp;metal screw, though, may be something like =
this=20
&lt;<A=20
href=3D"http://www.mcmaster.com/?m=3Dtrue#93406a257/=3Dxwaauj">http://www=
.mcmaster.com/?m=3Dtrue#93406a257/=3Dxwaauj</A>&gt;&nbsp;.=20
&nbsp;They thread into a clip that pushes into a large hole in the =
bulkhead; the=20
clips are available from TRF.</FONT></P>
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From: "Randall" <[email-masked]>
Date: Fri, 3 Jul 2015 17:05:02 -0700

> Do you have, perhaps, an electric temp gauge?  My 57 was so 
> equipped.  But those were actually early TR4 gauges and used 
> a voltage stabilizer.

Ok, let's try this again.  There are two different devices, both of which sometimes get called "voltage regulator".  One is the
control for the generator/alternator.  The Triumph documentation seems to usually call this a "control box" or "control unit".
Pretty much any car equipped with a generator or alternator and electric headlights has to have this function to avoid overcharging
the battery when the headlights are off.  On cars since about 1970 or so though (1969 for TR6), the voltage regulator is located
inside the alternator housing.  Still there, still required, just hidden.

I assumed Dave N. was asking about the generator control box, since "voltage regulator" is the common name for it in the US and TR3s
did not originally have voltage stabilizers.

The "voltage stabilizer" is something else, and as noted is only required with the gauges used on TR4-6.  Not required nor present
on a stock TR2-3B.  (I also have a TR4 temp gauge on my TR3 and so there is a VS mounted on one of the dash braces.)

As a side comment, my 1970 Audi also had a voltage stabilizer (though no doubt the Germans called it something else), but it only
put out 5 volts and consisted of a zener diode and power resistor.  I had the diode burn out several times (usually whenever the
voltage regulator would malfunction) so I got rather familiar with it. <g>

-- Randall

---

From: "Randall" <[email-masked]>
Date: Fri, 3 Jul 2015 22:14:17 -0700

> I imagine the TR control 
> box to contain two spools with slightly different functions.  
> One is a voltage regulator and the other is a current regulator.

Actually, both current and voltage are regulated by the same spool (neither one very well).  The other spool is the cutout, which
disconnects the generator from the battery when the engine is stopped (or turning too slow to generate).  This keeps the battery
from discharging through the generator (which otherwise tries to act like a motor).

If you would like to know more about how it works, there is a nice write-up in the introduction to Section 5 of the "Lucas Overseas
Technical Correspondence Course", which you can download from
https://drive.google.com/file/d/0B2H2NJt34OffV290bkxKZzdDUlE/view?usp=sharing

-- Randall

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From: Dave <[email-masked]>
Date: Sat, 4 Jul 2015 07:26:40 -0400

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Sorry, I was thinking of an earlier thread.  Plus the fact that the PO had =
fitted a TR4 temp gauge to my car...

Attached is a picture of my underhood showing where mine is located.

=20

=20

Dave Massey

=20

=20

-----Original Message-----
From: dave n <[email-masked]>
To: Dave <[email-masked]>; triumphs <[email-masked]>
Sent: Fri, Jul 3, 2015 6:47 pm
Subject: Re: [TR] voltage regulator

 =20
  =20
   =20
not the voltage stabilizer that manages the temp and gas gauge.  this is th=
e voltage regulator that sits on the firewall in the engine compartment  =
=20
        =20
     =20
     =20
     =20
      =20
       From:        Dave      =20
      =20
       Sent: Friday, July 3, 2015 4:47 PM     =20
      =20
       To:        [email-masked]      =20
      =20
       Subject: Re: [TR] voltage regulator     =20
    =20
   =20
    =20
    =20
           Do you have, perhaps, an electric temp gauge?  My 57 was so equi=
pped.  But those were actually early TR4 gauges and used a voltage stabiliz=
er.  The 57 TR3 had a fluid filled temp gauge so the only gauge that needed=
 stabilization is the fuel gauge.  My TR3 has a fuel gauge with three termi=
nals and two coils - internally compensated.  No voltage stabilizer in my c=
ar.  Now.
     =20
     =20
     =20
     =20
     =20
      Dave Massey     =20
     =20
    =20
     =20
     =20
     =20
     =20
     =20
-----Original Message-----     =20
From: dave n <[email-masked]>     =20
To: triumphs <[email-masked]>     =20
Sent: Fri, Jul 3, 2015 4:26 pm     =20
Subject: [TR] voltage regulator     =20
     =20
      =20
       =20
        =20
         =20
          =20
on a 57 tr3 =E2=80=93 it looks like it is held in by two bolts?  I don=E2=
=80=99t see anything in the moss catalog nor the manual.  what=E2=80=99s th=
e correct way to bolt it in?          =20
        =20
       =20
      =20
     =20
      =20
      =20

Donate:
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=20
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** [email-masked] **   =20
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Archive: http://www.team.net/archive   =20
teer.com   =20
    =20
=20
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<font color=3D'black' size=3D'4' face=3D'Arial, Helvetica, sans-serif'><fon=
t size=3D"4">Sorry, I was thinking of an earlier thread.&nbsp; Plus the fac=
t that the PO had fitted a TR4 temp gauge to my car...<br>
<br>
Attached is a picture of my underhood showing where mine is located.<br>
</font>

<div> <br>

</div>

<div> <br>

</div>

<div style=3D"clear:both"><font size=3D"4">Dave Massey</font><br>

<br>

</div>

<div> <br>

</div>

<div> <br>

</div>

<div style=3D"font-family:arial,helvetica;font-size:10pt;color:black">-----=
Original Message-----<br>

From: dave n &lt;[email-masked]&gt;<br>

To: Dave &lt;[email-masked]&gt;; triumphs &lt;[email-masked]&g=
t;<br>

Sent: Fri, Jul 3, 2015 6:47 pm<br>

Subject: Re: [TR] voltage regulator<br>

<br>

<div id=3D"AOLMsgPart_2_4d75f262-04c6-443d-8665-469d4a0e7d2c">

<div dir=3D"ltr" class=3D"aolReplacedBody">=20
=20

<div dir=3D"ltr">=20
 =20

<div style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">=20
  =20

<div>
not the voltage stabilizer that manages the temp and gas gauge.&nbsp; this =
is the voltage regulator that sits on the firewall in the engine compartmen=
t
   </div>

=20
  =20

<div style=3D"FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: &quot;C=
alibri&quot;; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISP=
LAY: inline">=20
   =20

<div style=3D"FONT: 10pt tahoma">=20
    =20

<div>
&nbsp;
     </div>

=20
    =20

<div style=3D"BACKGROUND: #f5f5f5">=20
     =20

<div style=3D"font-color: black">
       <b>From:</b>=20
       <a title=3D"[email-masked]" target=3D"_blank" removedlink__80b8d=
bc1-e31f-491f-ae39-a22745d0edbc__href=3D"mailto:[email-masked]">Dave</a=
>=20
      </div>

=20
     =20

<div>
       <b>Sent:</b> Friday, July 3, 2015 4:47 PM
      </div>

=20
     =20

<div>
       <b>To:</b>=20
       <a title=3D"[email-masked]" target=3D"_blank" removedlink__=
80b8dbc1-e31f-491f-ae39-a22745d0edbc__href=3D"mailto:[email-masked]=
t">[email-masked]</a>=20
      </div>

=20
     =20

<div>
       <b>Subject:</b> Re: [TR] voltage regulator
      </div>

     </div>

    </div>

=20
   =20

<div>
&nbsp;
    </div>

   </div>

=20
  =20

<div style=3D"FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: &quot;C=
alibri&quot;; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISP=
LAY: inline">
    <font face=3D"Arial, Helvetica, sans-serif" color=3D"black" size=3D"4">=
<font size=3D"4">Do you have, perhaps, an electric temp gauge?&nbsp; My 57 =
was so equipped.&nbsp; But those were actually </font><font size=3D"4">earl=
y TR4 gauges and used a voltage stabilizer.&nbsp; The 57 TR3 had a fluid fi=
lled temp gauge so the only gauge that needed stabilization is the fuel gau=
ge.&nbsp; My TR3 has a fuel gauge with three terminals and two coils - inte=
rnally compensated.&nbsp; No voltage stabilizer in my car.&nbsp; Now.<br>

</font>=20
    =20

<div>
&nbsp;
     </div>

=20
    =20

<div>
&nbsp;
     </div>

=20
    =20

<div style=3D"CLEAR: both">
      <font size=3D"4">Dave Massey</font>
      <br>

      <br>

     </div>

=20
    =20

<div>
&nbsp;
     </div>

=20
    =20

<div>
&nbsp;
     </div>

=20
    =20

<div style=3D"FONT-SIZE: 10pt; FONT-FAMILY: arial,helvetica; COLOR: black">
-----Original Message-----
      <br>

From: dave n &lt;<a removedlink__80b8dbc1-e31f-491f-ae39-a22745d0edbc__href=
=3D"mailto:[email-masked]">[email-masked]</a>&gt;
      <br>

To: triumphs &lt;<a removedlink__80b8dbc1-e31f-491f-ae39-a22745d0edbc__href=
=3D"mailto:[email-masked]">[email-masked]</a>&gt;
      <br>

Sent: Fri, Jul 3, 2015 4:26 pm
      <br>

Subject: [TR] voltage regulator
      <br>

      <br>

=20
     =20

<div id=3D"AOLMsgPart_1.2_1fbbf70e-62b1-4196-bf34-9691fc57c0d0">=20
      =20

<div class=3D"aolReplacedBody" dir=3D"ltr">=20
       =20

<div dir=3D"ltr">=20
        =20

<div style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">=20
         =20

<div>
on a 57 tr3 =E2=80=93 it looks like it is held in by two bolts?&nbsp; I don=
=E2=80=99t see anything in the moss catalog nor the manual.&nbsp; what=E2=
=80=99s the correct way to bolt it in?=20
          </div>

         </div>

        </div>

       </div>

      </div>

=20
     =20

<div id=3D"AOLMsgPart_2_39086b81-ce42-4326-bf5d-54c069795257" style=3D"FONT=
-SIZE: 12px; FONT-FAMILY: tahoma, verdana, arial, sans-serif; COLOR: #000; =
MARGIN: 0px; BACKGROUND-COLOR: #fff">
       <pre style=3D"FONT-SIZE: 9pt"><tt>
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