Radiator fan install & wiring help...

[rhock99@epix.net (Ryan H)]

The question was is the fan SPEED voltage dependent.  I know that electric motors are voltage dependant for operation, I just didn't know if it was more voltage = more fan speed.  Anyway, Allyn politely answered my question for me.

> 
> From: "Chris DeLong" <green536@hotmail.com>
> Date: 2002/12/31 Tue PM 11:27:30 EST
> To: rhock99@epix.net,  txrocco@sbcglobal.net,  scirocco-l@scirocco.org
> Subject: Re: RE: Radiator fan install & wiring help...
> 
> Ummm AFAIK the Flex-A-Lite is an electric motor. ALL electric motors are 
> voltage dependant. Thats why they are electric. Duh.
> 
> 
> 
> Chris DeLong
> ICQ#45030867
> Seattle, WA USA
> '80 16V 'Rocco ragtop
> '91 GLi 2.0 16V
> '77 Rabbit 16V
> '80 'Vert (parting out!)
> '61 17 Window type II
> '91 Vanagon
> '78 Rabbit
> '84 Jetta
> 
> 
> 
> 
> 
> >From: Ryan H <rhock99@epix.net>
> >To: "ATS - Patrick Bureau" <txrocco@sbcglobal.net>, scirocco-l@scirocco.org
> >Subject: Re: RE: Radiator fan install & wiring help...
> >Date: Tue, 31 Dec 2002 22:54:19 -0500
> >
> >About using a relay: Isn't the Flex-a-Lite a single speed fan?    Or is the 
> >speed of the fan voltage dependant?  In the latter case, couldn't you just 
> >use both stock red wires to power the fan, and when it's in low speed mode, 
> >the Flex will only see X voltage from the low speed wire, then in high 
> >speed mode it sees Z (>X) voltage from the high speed wire.  This thinking 
> >is all because the stock wiring for the fan already is relayed this way.  
> >Or am I thinking of this wrong?
> >
> > > The fan plug has three wires composed of a 1 ground (*brown*) 1 High 
> >speed
> > > and 1 Low Speed wires. Check Page 4-10,4-11 of Bentley, I do not recall
> > > which is what for high and low, but an easy test with a multimeter will 
> >tell
> > > you right away. which is which.
> > >
> > > what most people do is set up a relay to kick in the high speed on to 
> >both
> > > fans when it is required and have the relay come back to low speed when
> > > required, or they use one fan on low speed and connect the second fan on
> > > high speed.
> > >
> > > what I did ? both fans on low speed, none on high. but I am going to 
> >change
> > > this when My 2L goes in I will be using the relay system, I was too lazy
> > > last time I installed it. I live in Texas, and I have yet to see my temp
> > > raise above the led in 100+ temps with AC running. and oil temps sits at
> > > 100'c but I can tell you that the first week of driving with the new fan 
> >I
> > > kept a real close eye on the temps :)
> > >
> > > As for the way your fan should sit, if there is an issue you want it to 
> >the
> > > foremost right (passenger side), so that the sensor in the radiator has 
> >a
> > > "average temp"  and not cut off/turn on too many time the fans because 
> >they
> > > cooled the liquid closest to the sensor.
> > >
> > > just to let you know, the fan works wonders, and  make sure you wire it 
> >the
> > > right way (pull or push depending which side your installing it on the 
> >rad).
> > >
> > > ATS - Patrick Bureau - txrocco@sbcglobal.net
> > >
> > >
> > > =>-----Original Message-----
> > > =>From: scirocco-l-admin@scirocco.org
> > > =>[mailto:scirocco-l-admin@scirocco.org]On Behalf Of Ryan H
> > > =>Sent: Monday, December 30, 2002 11:28 PM
> > > =>To: scirocco-l@scirocco.org
> > > =>Subject: Radiator fan install & wiring help...
> > > =>
> > > =>
> > > =>I recently got a Flex-a-Lite to adapt to my 16V and have a few
> > > =>questions... The plug for the stock fan has 3 wires - red
> > > =>w/black, red w/white, and brown.  The Flex-a-Lite only has 2 (per
> > > =>fan) wires, power and ground.  So which wire do I use to power
> > > =>the Flex-a-Lite, red w/black or red w/white?  What is the other wire 
> >for?
> > > =>Also, the Flex-a-Lite is a bit small for the radiator but will
> > > =>fit with a little rigging... do you think it will be ok if I
> > > =>offset the fan all the way to one side and then have about 6
> > > =>inches of radiator overhang on the other side?  Or should I rig
> > > =>it into the middle (more difficult) so that there's 3 inches of
> > > =>overhand on each side like the stock fan shroud?
> > > =>
> > > =>
> > > =>_______________________________________________
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> > > =>Scirocco-l@scirocco.org
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> > >
> > >
> > > _______________________________________________
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> > >
> >
> >
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