![]() ![]() In many cases the padding also reduce side to side movement. An added benefit is that the pads serve as protection when strapping surfboards, SUPs or any other flat piece of gear to your roof. Wrapping the cross bars in pads also disturbs the airflow over and around the bars thereby reducing the humming or whistling noise from a naked roof rack cross bar. This helps reduce windnoise significantly.īut what about a square or round bar? We recommend using padded cross bar pads. Most of the premium racks comes with some type of textured rubber insert that disturbs the airflow and breaks up the frequency of the Aeolian noise we mentioned earlier. Using a wind fairingwill definetely help in reducing wind noise, but let's face it, it's just another piece of flimsy kit that gets in the way of loading and unloading your gear. A wind fairing is a plastic shield attaches to the front cross bar and attempts to divert airflow over and away from the bar to reduce wind noise and drag. Most manufacturers have one in their product line-up. The first option is to add a wind fairing. The secret to reducing the noise from a roof rack is by either diverting or disturbing the airflow around the cross bar. A square bar has a drag coefficient of about 1.05 a sphere is around 0.47 and an airfoil is as little as 0.04. If you compare the different shapes of cross bars, there is a masive difference in the drag coefficient between them. The higher the drag coefficient, the more noise is created. The amount of noise depends on the speed of the airflow (how fast you are driving) and the drag coefficient of the cross bar. If the surface the wind passes over has a consistent shape, the disturbance becomes tonal and at certain frequencies very annoying. The wind noise we hear from some roof racks is known as Aeolian no ise and is produced by wind when it passes over or through objects. Check Prices The problem: Why does my roof rack make a noise? I took the Torx bolts after I got the mount off and they were very hard to break with a 3/8 ratchet.Īnyone who needs extra cross bars I have posted them in the parts classified section. Those who thought it would be easy to remove the Torx bolts you can see it was just under 2 inches of space to try to get a tool there. We took the truck and the shop pulled off the rib and put in a couple of nutserts and everything bolted down perfectly. ![]() My friend called a shop he uses and told them of the situation. The other side when in and tightened down without any issue. When I pulled out the bolts, there was butyl on the bolt and apparently the internal nuts were pushed through. I learned the hard way as I tried to screw down one of the hex bolts and it would not grab nor would the bolt next to it. The kit has a butyl patch to cover each hole.īe sure to the hole is not covered with the sticky butyl. The unused covered mounting point also was easy to remove.Įach of the bolt holes had a yellow plastic sleeve around it. The factory mounting points were removed without incident. Any suggestion of what to do if a one of the nutserts falls through would be welcome. Hopefully tomorrow will be an "easy bolt on" project. I'll hit them again with the spray in the morning before I tackle removing the bolts and hope all the inserts remain intact. I sprayed all the bolts with penetrating spray. There is a 12MM bolt holding the center rail on and once removed it pulls off and the roof mount is exposed. Knowing that I'm not going to sell the side bars, I just got the sawzall and cut the side bars off. There is not much space between those bolts and the roof. There are 8 #30 Torx bolts holding the side rails together. Once the front and rear plastic covers are off, the cross bars can be loosened and slid to the rear for removal. pry a little and the plastic will pull out. Put the curved part of the tool under the trim and pop it off. The front and rear covers came off easily with The plastic covers were easy to remove with one of my interior trim tools. Started the process of installing my Rhino Rack platform rack.įirst was to remove the factory rack. ![]()
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