This is a really good test using your simple work glove.
Just pull it from about the center of the fan, out to the end.
Look what happens when a fan is not performing, so… within a few seconds, just using your work glove you can actually tell if you have an issue or not. Other than that, it takes hours to test a fan.
This one is performing very well until you get to the end of the fan. We have a problem. We now have to think about how to fix this problem.