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Tuft testing: let the fun begin!
So let’s use a casual engineering approach to this test in a form others easily can duplicate if they so choose so we can get comparative data.
Step 1: The static test
I’m going to start my car (motor idling so it heats up a little and so I don’t wear the battery down while running the fans) in the garage or in the driveway.
Again, a static test with the car at rest, not in motion.
I’m going to test two areas (I don’t have a hood scoop yet – coming this summer).
A) Side vents
I will attach tufts inside the wheel well ( driver side and passenger side) onto the vent vanes to see how they move when:
1) Front pusher fans only are ON
2) Rear puller fan only is ON
B) Radiator shroud/rear puller fan cage
I will attach tufts to the radiator shroud, rear puller fan cage, and a few places on the front of the engine to see how they move when:
1) Front pusher fans only are ON
2) Rear puller fan only is ON
All of this will give me a preliminary indication of where the air is moving while the car is static.
I am using this approach, because, when I’m driving the car and come to a stop sign, and my puller fan is ON, I can reach my left hand outside the car and forward to the vent, and I feel a large amount of air coming out of the vent.
I want to confirm this with tufts.
That’s my first step this weekend.
Next- Step 2: The moving test.
Stay tuned.
Cheers
Greg
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