Peter Zaborski schrieb:
>
> > -----Original Message-----
> > From: James [SMTP:james.carpenter@ukaea.org.uk]
> > Sent: Wednesday, March 25, 1998 9:06 AM
> > To: sweisman@gis.net
> > Cc: jmwagner@greenheart.com; triumphs
> > Subject: Re: Electric fans
> >
> <snip>
>
> > Plus 15-20% gain in power.
> >
> Hmm... that sounds kinda high to me. From 100hp (let's say) to 120? Even
> 115? By just removing the mechanical fan? Can anyone confirm this?
>
> Peter Zaborski
> 76 TR6 (CF58310 UO)
> Calgary AB Canada
>
15-20% gain in power is only possible if Triumph fitted far too large fans as
standard but why are that many people having trouble with overheating then?
Engeneering books state a belt driven fan takes away 6-9% enginepower.
BTW the main advantage of an electric fan is not better cooling which I doubt,
but :
1. it does not take away power from the engine
2. it workes only when the radiator needs additional cooling-air . A belt
driven
fan takes away most power at highest poweroutput. As one usually drives fast
at high poweroutput you donīt need the fan in this situation as there will
be
enough airflow through the radiator(a different thing of course is if you
drive up a long hill at low speed and high RPM).
3. it reduces fuel consumption
4. it takes away stress from the front mainbearing
This could be the reasons why belt driven, constant linked fans are no longer
found in new cars.
Gerhard
1969 TR 6
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