[s-cars] Viscous fan clutch failure?

[Mark Strangways]

Not really a free ride. It does steal HP
Maybe like you said an electric clutch that would dump it under high rpm / 
high load usage.
After all who needs a fan at 150 MPH

Mark
----- Original Message ----- 
From: <djdawson2 at aol.com>
To: <StrangConst at rogers.com>; <josh at spiny.com>; <S-CAR-List at audifans.com>
Sent: Friday, May 11, 2007 7:24 PM
Subject: Re: [s-cars] Viscous fan clutch failure?


>I don't think there's anything "wrong" with electric fans... it's just that 
>they tend to use rather high current motors.  That mean relays and 
>switches... and increased alternator load.  An engine driven fan is 
>essentially a "free ride" so it makes more sense to me... when it's an 
>option.  Some engine compartments just don't have the space.
>
> Dave
>
>
> -----Original Message-----
> From: StrangConst at rogers.com
> To: josh at spiny.com; S-CAR-List at audifans.com; djdawson2 at aol.com
> Sent: Fri, 11 May 2007 5:21 PM
> Subject: Re: [s-cars] Viscous fan clutch failure?
>
>
> What's wrong with electric fans.
> I guess other than the weight of the motor.
>
> I just saw Audi Canada's wrecked (at Mosport) 2007 S8 V10 (5.2 l) it has 
> one electric fan left...
> Gonna see how it will fit.
> Anyone want an S8 interior, or motor ? What is left of the car is all for 
> sale
>
> Mark
> ----- Original Message ----- 
> From: djdawson2 at aol.com
> To: josh at spiny.com ; StrangConst at rogers.com ; S-CAR-List at audifans.com
> Sent: Friday, May 11, 2007 7:06 PM
> Subject: Re: [s-cars] Viscous fan clutch failure?
>
>
> Still yet, the best solution is the fan clutch that is activated much like 
> the A/C clutch.  No engagement at all when not required, and then full 
> engagement when needed.
>
> Haven't seen that on cars yet.
>
>
> -----Original Message-----
> From: josh at spiny.com
> To: StrangConst at rogers.com; S-CAR-List at audifans.com
> Sent: Fri, 11 May 2007 4:33 PM
> Subject: Re: [s-cars] Viscous fan clutch failure?
>
>
> Mark, that might be true on old cars without modern fan clutches, but
> the clutch is there to keep the fan from robbing too much power, and
> also to keep the noise down.  The idea is that the hotter the air
> gets around the fan, the more air it moves.  Plus, a viscous clutched
> fan is able to move much more air than an electric fan, and more
> reliably too. They're not without their problems, but they do have
> some important advantages over electric fans.
>
> On May 11, 2007, at 8:36 AM, Mark Strangways wrote:
>
>> Yank that sucka outta there and put in an electric.
>> Good for about 30-50 HP... Dyno proven
>>
>> Mark
>> ----- Original Message -----
>> From: "Peter Golledge" <petergolledge at gmail.com>
>> To: <s-car-list at audifans.com>
>> Sent: Friday, May 11, 2007 9:05 AM
>> Subject: [s-cars] Viscous fan clutch failure?
>>
>>
>>> Folk,
>>>
>>> My wife reported some unusual noise from her 95 S6 and no A/C.  I
>>> check
>>> out
>>> the car last night... everything seems fine.  Get it up to
>>> operating temp
>>> with a drive, still no problems.  Looking at the primary fan I see it
>>> turning maybe 60 rpm with the engine idling.  Stops with the touch
>>> of bit
>>> of
>>> plastic scrap.  No huge play in the clutch but I suspect its
>>> dead.    Any
>>> BTDT on the list?
>>>
>>> With the fan blades off I can easily get a big 32" spanner on the
>>> clutch.
>>> Anyone removed it by holding the pulley with rubber filter strap or
>>> similar?
>>>
>>> Regards
>>> -- 
>>> Peter Golledge
>>>
>>> 95 S6, 89 200TQA, 87 LT-1Q, 1979 930
>>> _______________________________________________
>>> S-CAR-List mailing list
>>> S-CAR-List at audifans.com
>>> http://www.audifans.com/mailman/listinfo/s-car-list
>>>
>>
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