Larry,
The flow output of 10 of these fans probably isnt enough to
cool your alpine.
If you believe that 20 km/h is enough rolling velocity to cool
your car under your climatic conditions, bare in mind that this
is across the entire cross section of your radiator (more or less).
If you consider that your radiator has about 2.5 sqr ft area, with
a flow velocity of 20 km/h (1091 ft/min), the approximate flow rate
would be around 2700 SCFM. You may be lucky enough to find the
specified flow rate on those fans, but I seriously doubt that each one
could put out 270 SCFM. In reality I think 1000 SCFM would be
sufficient to cool your alpine.
Ive seen some fair sized fans for cooling available with capacities
over 1500 SCFM, but these will run between 50 and 100 watts at full
load. BTW, 100w is only 1/3 HP to the alternator.
Many 80s 5 series BMWs have a nice pusher fan between the bumper and
the radiator that would likely be upt ot the task.
Good luck,
Jarrid Gross
-----Original Message-----
From: owner-alpines@autox.team.net
[mailto:owner-alpines@autox.team.net]On Behalf Of lauri lehtinen
Sent: Wednesday, May 02, 2001 1:19 PM
To: alpines@autox.team.net
Subject: Computer fans
I have looked after a suitable electric cooling fan for my Mk4, but have
not found.
But I found a pile of 12V computer fans, which are very compact but very
low power rated (0.27A / 12V means about 3.5W with 13...14V).
On the other hand, they give a wind apprx. 20 km/h, and in those speeds my
Alpine does not overheat. At Scandinavian summers Alpine overheats only in
traffic jams at the hottest days (=20-25 centigrade). Might it be any use
to put let us say 10 fans at the front side of the radiator? It means only
35 watts output; well, air moves quite rapidly with minimium power...
Larry Leaflet
#auri Lehtinen
Lehtipuu Oy
Kirkonkylantie 83
00780 Helsinki
FINLAND
tel: +358 400 851988
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