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Old 08-23-2016, 09:33 AM   #11
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Airfoils can also be made from PVC file folders and gorilla tape
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Old 08-23-2016, 09:48 AM   #12
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Airfoils can also be made from PVC file folders and gorilla tape
You might be surprised what gets glued, taped, bolted on vehicles during testing. Aerodynamics sometimes is very counter intuitive.

-Eric
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Old 08-23-2016, 10:02 AM   #13
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I've got to do something on mine.. Recently added antenna platform whistles a bit.. The solar panels may well have whistled too, but they're far enough back.

Thinking some people swear by the rope trick, which I can't do, I tried some little rubber nibs to break up the wind, it did nothing. Next step is a fairing of some sort, either make my own or something like this one:

https://www.amazon.com/gp/product/B0...A1O0QXW9EP5KRJ
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Old 08-23-2016, 10:24 AM   #14
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Originally Posted by rallypanam View Post
I've got to do something on mine.. Recently added antenna platform whistles a bit.. The solar panels may well have whistled too, but they're far enough back.

Thinking some people swear by the rope trick, which I can't do, I tried some little rubber nibs to break up the wind, it did nothing. Next step is a fairing of some sort, either make my own or something like this one:

https://www.amazon.com/gp/product/B0...A1O0QXW9EP5KRJ
Isn't your van a diesel? And you actually still hear roof rack noise?
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Old 08-23-2016, 10:28 AM   #15
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Van oic

Picture of rack
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Old 08-23-2016, 10:29 AM   #16
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On mine, it sounds like the wind is turbulent between the rack and the roof (my rack has a solid aluminum plate floor). Would air foils on the roof help with that?
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Old 08-23-2016, 10:30 AM   #17
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Picture of rack
I would try spiral wrapping a cord on the forward most crossbar.
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Old 08-23-2016, 10:31 AM   #18
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The issue for the OP is the noise created by the LED light bar. Here's a few solutions from the Jeep guys. 5 dollar 50" led light bar whistle fix - Jeep Wrangler Forum
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