Quote:
Originally Posted by kach22i
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I am not sold. Only truly positive aspects I am convinced of are they are better at is lining the pockets of the seller, and give the driver the perception his brakes are now being cooled.
The downsides omitted from this discussion so far:
a. They increase unsprung weight, albeit slightly
b. they consume rotational energy
c. I submit they cool an entire caliper less effectively then current design of ducted encapsulated caliper shrouds
e. they exhaust more air thru the wheel's exterior disrupting already contentious wheel air flow around the car's body, but wonder if when at speed there is an "air curtain" effect blocking wheel exhaust airflow
d. they move air mainly on one side of a flat rotor vs the most effective cooling surface of a vented rotor, the interior finned surfaces
f. Not sure if one stipulates the fans remove hot air, and conversely that hot air is now also 'cooling" the wheel/tire somehow
g. Their design is somewhat inefficient, in that they mainly "beat" the air, as there is no real clean air supply path for cool intake air for this crude centrifugal fan.
h. Brake blowers/ducts are cooling brakes/calipers at car speeds from 0 and up, these "fans" not so much