[Vwdiesel] Anyone try this? (To have a warm, toasty car)

[Erik Lane]

I would use one small relay rather than diodes for isolation, just to keep
from losing the .6V at the diode. (I would put the relay in the existing
circuit and then have a plug so that when the converter wasn't plugged in
that wouldn't be connected to anything.)

If you're using a converter, you might be able to only give the fan 5-8V or
so and run it at a slower speed, while still bypassing the resistor. (Those
numbers are just guesses - I've never checked what the voltages are of the
different fan speeds.)

Yes, it would take a little bit of figuring out, but it wouldn't be all that
hard.

Erik

On Fri, Dec 18, 2009 at 12:28 PM, James Hansen <jhsg at sasktel.net> wrote:

> Some small hurdles that I can think of.
> Energizing fan will also energize the rest of that circuit.
> Running outside air through the heater core when it's really cold with fan
> on high will extract most if not all available heat that the circulating
> heater provides. I know the heater core can remove enough heat to cool the
> engine off at -30.  That's going from warm motor fan on med to fan on high
> at -30, the temp gauge drops like a fallen stone in city driving.
> Cost of a suitable transformer and isolation diodes plus all the work may
> dwarf the cost of a car warmer.
> Sintered bronze fan motor bearings seem to develop a taste for lube.  Once
> they get it once, they squeal to high heaven every few weeks wanting more.
> -james
>
> > -----Original Message-----
> > From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com]
> > On Behalf Of Dave Cook
> > Sent: Friday, December 18, 2009 2:01 PM
> > To: VW Diesel Group
> > Subject: Re: [Vwdiesel] Anyone try this? (To have a warm, toasty car)
> >
> > I figured the easiest way to do it would be to tie directly into the
> > 12v for high speed and bypass the resistor pack, partly for this reason
> > and partly because it seemed simplist.  I could probably just get a 12v
> > converter and plug it in with the heater and splice into the wiring for
> > speed 4.  If I do this, I may consider taking it apart and greasing the
> > bearings.  Did someone do a writeup on this?  (Lubing the bearings)
> >
> > Having a block heater is nice, but having a warm car every morning
> > would be stellar!
> >
> > Dave Cook
> >
> >
> > --- On Fri, 12/18/09, Will Taygan <william at taygan.com> wrote:
> >
> > > From: Will Taygan <william at taygan.com>
> > > Subject: Re: [Vwdiesel] Anyone try this?  (To have a warm, toasty
> > car)
> > > To: "vwdiesel" <vwdiesel at audifans.com>
> > > Date: Friday, December 18, 2009, 4:48 PM
> > > Make sure your fan is good, and/or
> > > don't use the lowest speed.   When
> > > it's really cold out, then fan needs enough power to spin
> > > up and
> > > overcome those cold thick bearings.  I've burned out a
> > > resistor pack
> > > idling with the fan on low in the '91 eco.
> > >
> > > Will in Alaska
> > >
> > > On Thu, 2009-12-17 at 22:40 -0800, Dave Cook wrote:
> > > > I'm ordering a circulating coolant heater for my
> > > Cabriolet because, well, I hate being cold.
> > > >
> > > > So what I'm thinking about is rigging up something so
> > > that when power is going to the heater, the blower fan is
> > > running too.  I figure that way, I could plug both in
> > > and if I have the lever slid to hot and the other lever slid
> > > to defrost, I could have a clear windshield and toasty car
> > > in a short time without letting it sit idling.
> > > >
> > > > Before I try to invent this, I was just wondering if
> > > anyone else has already and can offer advice?
> > > >
> > > > Thanks,
> > > >
> > > > Dave Cook
> > > >
> > > >
> > > >
> > > >
> > > > _______________________________________________
> > > > Vwdiesel mailing list
> > > > Vwdiesel at vwfans.com
> > > > http://www.audifans.com/mailman/listinfo/vwdiesel
> > > >
> > >
> > >
> > > _______________________________________________
> > > Vwdiesel mailing list
> > > Vwdiesel at vwfans.com
> > > http://www.audifans.com/mailman/listinfo/vwdiesel
> > >
> >
> >
> >
> >
> > _______________________________________________
> > Vwdiesel mailing list
> > Vwdiesel at vwfans.com
> > http://www.audifans.com/mailman/listinfo/vwdiesel
>
> _______________________________________________
> Vwdiesel mailing list
> Vwdiesel at vwfans.com
> http://www.audifans.com/mailman/listinfo/vwdiesel
>