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Spal Cooling fans
Made in Italy -
The best we have tested.
We do not sell them
but do recommend them
Some of our Test Results through a core.
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| We tested a 16" Zirgo, 16" Davies
Craig & 4 x 16" Spal fans. The Zirgo has the most
over rated factory cfm rating of any fan we've
tested, so beware. It will not cool as good as
you're led to believe. |
This is 3 tests we
did. Please note the biggest drop in efficiency
we've ever seen
-332%.
All we did was reverse the terminals on the Spal fan
- nothing else. The revs stayed similar, but it made
a very different noise from the blades.
1755.2 to 584.1cfm. |
We tested two
Maradyne Fans for ADRAD, & while I had the chance,
tested the 9" fan with 3 different intercooler
cores. Push, Pull & reversed polarity. This fan had
one of the smallest drops we've measured when it was
reversed. |
The first point I
want to make is a common mistake !
Nearly all Spal
fans are directional, that is they are designed to rotate one way only.
Fans are either 'pullers' or 'pushers'. That is, they are on the back of the
radiator & pull the air through or they are on the front of the radiator & push
the air through. A pusher can be anything from 4% to 11% less efficient
in overall cooling,
even though the fan is more
efficient itself, the motor & plastic shrouding disrupts & slows
the air flow before the core, which doesn't
happen if the fan is on the back of the core.
I have
noticed numerous times on forums, where posts are made saying to just swap the
wires if the fan is blowing in the wrong direction, & worse still, people have
said that they did it & recommend to someone to do the same. Worst of all, are
cases where a business staff member has recommended it, instead of not selling
the right fan (maybe out of stock), swapping the product, or giving a refund.
They either don't have a conscience, are not trained properly, or plain stupid.
I have seen cases, & unfortunately it has involved our radiators too, where so
much time & money has been wasted trying to fix an overheating problem, that was
as simple as the fan blade being on around the right way, or the wrong direction
fan! Some times when such a simple & quick fix solves their problems, they
have been too pissed off to be immediately thank full.
This page is under construction - please
come back in a few weeks.
This doesn't look good ! |
When accelerating straight, you have 1026ml of oil
totally trapped for the pickup. |
When cornering right, you have 922ml.
totally trapped for the |
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