Gotcha, thanks.Nice car; nice rack. I'm not sure about this - but I think you need to be careful when you bolt-down the roof rack stanchions / towers onto the (hidden under-the-little-"doors") bolt-down brackets. Does Mazda give a torque spec or a max. number of bolt rotations in their instructions for the roof rack? The reasons I mention this are i) you don't want the bolt-ends to contact and dent the roof surface / and/or break the integrity of the roof paint - and cause rust to start there (if the brackets WOULD allow that to happen); and ii) some folks have over-tightened the bolts and have caused the roof brackets to bend (upwards) thereby preventing the little plastic "doors" from being able to be put back into the roof seam reveal moulding (when the towers are removed).
I’d be curious to hear your wind noise impressions if a front fairing was added. I never really drove mine without that part, but it is ungodly loud. Unless I have the bikes up there I keep the sunshade closed to block the noise. If I have the sunroof open, it sounds like the inside of a small airplane with the amount of noise it makes.Rack impressions: Install was very straight-forward and took about ten minutes going slow and carefully. It looks good and feels well made and sporty looking in real life. Without the bungee wrap at low speeds the rack is pretty quiet if it's not windy. At higher speeds 50mph and up it definitely has a rumble like airplane wings. With a bungee spiral it reduces the noise about 75%. At higher speeds or if its pretty windy you still hear it but not terrible. I rewrapped the bars with a wider spiral and I like the look better but the tighter spiral is a bit quieter.
It seems as thought Yakima solved some of the issues you bring up.Some people like the look and function of fairings but I’m not a fan. Fairings can often vibrate and make noise even worse and rub through the roof paint over time where it contacts . They also make it more difficult to actually use the racks. They also tend to loosen and need retightening. For me bungees is my preferred method to quiet The wind noise. I drilled holes from inside the end caps to start the bungees for a cleaner look.
Thx...It's a three letter acronym, for Computational Fluid Dynamics. It's an analytical tool, not unllike a virtual wind tunnel, used to predict fluid flow rates, velocities, pressures, etc. The predicted results are usually verified with measured test data.
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