In the CAC testing shop, we've been evaluating a Maradyne "Fast&Cool Air Blower" and we use it for two different purposes.
Occasionally, when we have a car idling in the shop for a long period, we use a fan to increase cooling air flow though the car's radiator. An example might be if we are recording engine controls data during a long period of idle and we'd prefer the engine coolant temperature (ECT) to stay normal or close to it, rather than rising to a high ECT typical of a long idle period.
Secondly: we take cars to the chassis dyno on a regular basis. The facility we use is WesTech Performance Group in Mira Loma, California. They have two large, round fans which are positioned ahead and behind the car, however, with cars which are "bottom breathers", such as C4s and C5s, we need a lot of air flow very low to the floor. In those situations, products like the Fast&Cool, with its specially-shaped outlet, are preferred over a box fan or circular fan because the extra cooling air flow can be "aimed" close to the ground. That way, much more of the air flow goes into a car's cooling air intake and rather than over the front of the car.
The "Fast&Cool Air Blower" (PN MFC2200) is made by engine cooling fan specialist, Maradyne High-Performance Fans. The housing is made of tough, durable, rotomolded polyethylene. It's has a two-speed, 115-volt, 1/3-hp electric motor which spins a squirrel cage blower. The motor draws 2.3-2.5-amps, depending whether you select low- or high-speed. On high, the blower turns 1100-rpm and moves 3000 cubic feet of air per minute. The Fast&Cool has a 25-foot cord. It is, also, fitted with a duplex GFCI which allows one to plug in another fan or some other device. Because of its robust electrical design, if you are a big fan of fans; you can connect as many as four Fast&Cools on one circuit. The Fast&Cool, due to it's heavy-duty construction and powerful motor is a bit hefty at 30-lbs, but that is typical of this type of shop blower.
Our first test of a Fast&Cool was to start up our C5 Z06 and let it idle in the garage, which was 91°F, until the ECT rose to 203°, just below our calibrated fan-on temp of 205°. Then we set the Fast&Cool in front of the car. With the unit sitting on the floor, it's outlet was pointed right at the C5s cooling air intake. We turned the Maradyne on high and waited. Within five minutes the ECT was 185° and at the end of 15-min. it was 180°. Clearly, the Fast&Cool does very well as an auxiliary cooling fan.
A few weeks later, we were running the car on WesTech's chassis dyno. WesTech is in the "Inland Empire" region of Southern California. Our dyno test was in late July and, that time of year, you're guaranteed hot weather. We were at WesTech when they opened at 8 AM and it was already 78° in the chassis dyno area. WestTech has two giant fans, one for the rear of the car to suck exhaust out and one in front to supply cooling air flow but, as we pointed out earlier in this evaluation, a lot of their flow doesn't make it into the bottom breathing cooling air intake for a C5, so we brought along the Fast&Cool and placed it right in front of the air intake.
After each dyno run, we fast-idle the engine to bring the engine coolant temperature back down from the mid 200s° to 185°-190°. The Maradyne Fast&Cool, shortened the wait between runs. Because chassis dynos charge by the hour, having a good auxiliary fan cuts costs. We were in-and-out of WesTech for three passes on their SuperFlow WynDyn in less than an hour.
If you need a shop fan which blows low to the ground, the Fast&Cool is a darn good choice. For more information visit the Maradyne High-Performance Fans web site at http://www.maradynehp.com or call: 800.403.7953.