[Vwdiesel] Vwdiesel Digest, Vol 53, Issue 33

Sat Mar 29 12:41:57 PDT 2008

I was able to do the tach conversion by using this post http://www.vwdiesel.net/phpBB/viewtopic.php?t=3741
Otherwise Roger on here has a conversion kit if you don't want to get the alternator with the "W" terminal. Those alternators are kind of harder to find and aren't cheap if you already have a working alternator. I found a gas tach and wired it for the alternator and then put the diesel instrument parts in and it looks factory. 
Travis G

> From: vwdiesel-request at vwfans.com> Subject: Vwdiesel Digest, Vol 53, Issue 33> To: vwdiesel at vwfans.com> Date: Sat, 29 Mar 2008 12:00:01 -0700> > Send Vwdiesel mailing list submissions to> vwdiesel at vwfans.com> > To subscribe or unsubscribe via the World Wide Web, visit> http://www.audifans.com/mailman/listinfo/vwdiesel> or, via email, send a message with subject or body 'help' to> vwdiesel-request at vwfans.com> > You can reach the person managing the list at> vwdiesel-owner at vwfans.com> > When replying, please edit your Subject line so it is more specific> than "Re: Contents of Vwdiesel digest..."> > > Today's Topics:> > 1. Questions about mailing list (Caleb Van Dyke)> 2. Re: Questions about mailing list (Roger Brown)> 3. Re: Bentley manual for VW TDI (Dan Simoes)> 4. VW Rabbit Diesel Tachometer (Caleb Van Dyke)> 5. mail (pukalewes)> 6. Re: VW Rabbit Diesel Tachometer (Roger Brown)> 7. Re: Voltage Stabilizer (Roger Brown)> 8. voltage regulator and hot wire instruments (Sandy Cameron)> > > ----------------------------------------------------------------------> > Message: 1> Date: Fri, 28 Mar 2008 19:19:06 -0700 (PDT)> From: Caleb Van Dyke <awaytothesea at yahoo.com>> Subject: [Vwdiesel] Questions about mailing list> To: vwdiesel at vwfans.com> Message-ID: <455243.15079.qm at web35106.mail.mud.yahoo.com>> Content-Type: text/plain; charset=iso-8859-1> > How do I ask questions in the forum that is sent to me every day?> > Thanks,> > Caleb> > > ---------------------------------> Never miss a thing. Make Yahoo your homepage.> > ------------------------------> > Message: 2> Date: Fri, 28 Mar 2008 19:36:16 -0700> From: Roger Brown <r.c.brown at ieee.org>> Subject: Re: [Vwdiesel] Questions about mailing list> To: vwdiesel at vwfans.com> Message-ID: <47EDAB20.107 at ieee.org>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed> > Caleb Van Dyke wrote:> > How do I ask questions in the forum that is sent to me every day?> > > > Thanks,> > > > Caleb> > You just did.> > -- > > Roger> > > ------------------------------> > Message: 3> Date: Fri, 14 Mar 2008 18:51:55 -0700> From: Dan Simoes <dan at audifans.com>> Subject: Re: [Vwdiesel] Bentley manual for VW TDI> To: chrisp at popstar.com> Cc: vwdiesel at vwfans.com> Message-ID: <2097A188-D698-4C12-8985-92CD1E2D34F5 at audifans.com>> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes> > Bentley, my old site, TDIparts.com.> For lines, McMaster-Carr, but try TDIparts as well.> > On Mar 14, 2008, at 6:04 PM, chrisp at popstar.com wrote:> > > Where is the best place to get a Bentley manual for a 2003 VW TDI?> > Also, I am hoping to start running mostly biodiesel and wanted a > > recommendation on where I could pickup synthetic replacement > > injector return lines to avoid the possiblility of leaks from the > > stock lines. I run B20 regularly as that is what is available in the > > area. B99+ is coming to town relatively soon, I hope.> >> > Thanks so much.> > -Christopher> >> > -- > > Want an e-mail address like mine?> > Get a free e-mail account today at www.mail.com!> >> > _______________________________________________> > Vwdiesel mailing list> > Vwdiesel at vwfans.com> > http://www.audifans.com/mailman/listinfo/vwdiesel> > > > ------------------------------> > Message: 4> Date: Fri, 28 Mar 2008 22:15:48 -0400> From: Caleb Van Dyke <malibuvan at hotmail.com>> Subject: [Vwdiesel] VW Rabbit Diesel Tachometer> To: <vwdiesel at vwfans.com>> Message-ID: <BAY104-W56F54E9321DB9FC8FF47DAA8F80 at phx.gbl>> Content-Type: text/plain; charset="Windows-1252"> > > Anyone know if the VW Rabbit Diesel years of approximately 1979 to 1984 came with a tach? I'd like to put a gauge cluster with a tach. in my 1981 Rabbit Diesel Pick-up.> > Caleb> _________________________________________________________________> Watch ?Cause Effect,? a show about real people making a real difference. Learn more.> http://im.live.com/Messenger/IM/MTV/?source=text_watchcause> > ------------------------------> > Message: 5> Date: Sat, 29 Mar 2008 10:52:17 -0400> From: "pukalewes" <pukalewes at mchsi.com>> Subject: [Vwdiesel] mail> To: <Vwdiesel at vwfans.com>> Message-ID: <001301c891ac$7bf586f0$43b0d20c at eq7nraeq9sbwpv>> Content-Type: text/plain; charset="iso-8859-1"> > Please take me off the mailing list I no longer have a VW.> Thank you for your cooperation in this matter.> > > ------------------------------> > Message: 6> Date: Sat, 29 Mar 2008 08:05:43 -0700> From: Roger Brown <r.c.brown at ieee.org>> Subject: Re: [Vwdiesel] VW Rabbit Diesel Tachometer> To: vwdiesel at vwfans.com> Message-ID: <47EE5AC7.4050407 at ieee.org>> Content-Type: text/plain; charset=windows-1252; format=flowed> > Caleb Van Dyke wrote:> > Anyone know if the VW Rabbit Diesel years of approximately 1979 to 1984 came with a tach? I'd like to put a gauge cluster with a tach. in my 1981 Rabbit Diesel Pick-up.> > > > Caleb> > I think they only came in the Jetta turbo diesels:> http://www.4crawler.com/Diesel/CheapTricks/Tachometer/index.shtml#OEMInstall> > -- > > Roger> > > ------------------------------> > Message: 7> Date: Sat, 29 Mar 2008 08:09:45 -0700> From: Roger Brown <r.c.brown at ieee.org>> Subject: Re: [Vwdiesel] Voltage Stabilizer> To: vwdiesel at vwfans.com> Message-ID: <47EE5BB9.5010900 at ieee.org>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed> > Rudy wrote:> > So, if the Fuel and Temp gauge are steady and consistent, I can assume its> > working as designed. ??> > Thanks for the responses. I think I understand, should be able to test it> > on the bench now. Rudy> > Yes, I think that working gauges is a good indication of a functioning voltage stabilizer, > since it is what supplies a steady voltage to the gauges.> > And why is that important? Most of the senders for the gauges are variable resistance > devices. Then a simple current meter is used for the gauge, by sending a constant > voltage through that varying resistance (in the sender) you get a varying current that > shows up as needle movement on the gauge. If that voltage were to vary up and down with > load on the alternator, you would see your gauges moving up and down with the changes in > the system voltage.> > -- > > Roger> > > ------------------------------> > Message: 8> Date: Sat, 29 Mar 2008 11:25:18 -0400> From: Sandy Cameron <scameron at storm.ca>> Subject: [Vwdiesel] voltage regulator and hot wire instruments> To: vwdiesel at audifans.com> Message-ID: <1.5.4.32.20080329152518.009d0628 at pop.storm.ca>> Content-Type: text/plain; charset="us-ascii"> > > I may have published this here before.> > Sandy> > > > The gauges are "hot wire" instruments that operate by the expansion or> contraction of a metalic element, wire, or bi-metal wound with resistance wire.> > Good way to average out rapid fluctuations caused by fuel sloshing in the> tank, etc.> They have an inherant time delay rated in many seconds, up to a minute.> > Such instruments, more current operated than voltage, are sensitive to> changes of both.> > Therefore, the need to keep the suppply constant, notwithstanding alternator> variation, wiring harness losses load variations, etc, a regulated voltage> is desireable.> > Many years ago, before silicon, some American cars (Ford was one) had an> electro-mechanical regulator, using the same "hot wire" principle , to> switch the gauge power on and off rapidly, like a high speed signal flasher,> to provide a constant AVERAGE voltage for the gauges.> > [ The voltage goes higher, the off to on time increases], duty cycle variation.> > The on versus off rate is called "Hysteresis", and the hotwire gauges> average it out due to their time lag.> > Modern solid state alternator voltage regulators work the same way, and> except for the hysteresis of the rotor's magnetic circuit, would "chop"at a> high speed.> > Chopping the current on and off eliminates the need for huge heat sinks that> would be required if the regulator were to try to control the field current> in analog mode, wasting 10 to 20 watts as heat.> > The instrument cluster,(according to Bentley) is a 10 volt regulator. Any> voltage more than about 11 volts fed in to it, will come out firmly clamped> to 10 volts.> It is probably a generic 7810 device, it is a TO5 package.> > Curiously, it too, works in the on-off mode, but at a very high frequency> (for all of the reasons mentioned above) but in electronic circuits, a very> small capacitor will smooth out the "buzz" (the hysteresis element).> > The old electro-mechanical regulators used on auto generators up to the> middle of the last century worked the same way, using a voltage sensitive> relay to turn the generator field winding on and of rapidly, (sometimes not> so rapidly I could see the lights blinking at times) and again, it was the> magnetic hysteresis of the generator that smoothed it out.> > The later ones, post WW2, ( just before alternators appeared) had 3> different charge levels, where the relay could switch resistors in and out> of the field circuit to smooth the on- off variations a bit.> > Here endeth the lesson. (and the hysterics :^)> > Sandy> > > > > ------------------------------> > _______________________________________________> Vwdiesel mailing list> Vwdiesel at vwfans.com> http://www.audifans.com/mailman/listinfo/vwdiesel> > > End of Vwdiesel Digest, Vol 53, Issue 33> ****************************************
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