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Vortex Generator Experiment

 
Old 05-31-2016, 12:34 AM
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Vortex Generator Experiment

As you all know by now. Most SUV's have a large cross section vs Sedans. Our w164 is no exception. The main reason why milage suffer - SUVs displace more air. And the faster you go the more air is displaced. One of the most recent innovations I've noticed are "vortex generators" on the backs of semi-trucks. I wont be discussing how it works (you can google that). But i want to share the results of what I got in this video. At first I thought it looks ugly - thats why it took me a full month before i decided to install it. But now - i think its worth doing. If you decide to try this - please collect plenty of mpg logs before you try it. That will give you a better baseline.


Last edited by 20swrt; 05-31-2016 at 12:38 AM.
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Old 05-31-2016, 04:09 PM
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could you post pics of the install etc
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Old 05-31-2016, 08:13 PM
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In my opinion, the period of time and distance traveled isn't sufficient for a good analysis, unless the numbers are simply overwhelming, which they aren't. Wind speed alone can account for a 10% discrepancy - too many variables.
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Old 05-31-2016, 11:33 PM
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I agree with you Marc - there are a lot of factors to consider. I am posting this in the hope that folks might use this data as a baseline of comparison and hopefully they can also post what numbers they get (every fillup). In my case, this is a picture of my first fill-up after installing the vortex generator. This is a photo just before the amber light came on (going up my driveway). I consider this one of my highest milage for city/hwy. Please note 33mph is the average speed. 575mi reached. Photo shows 24.3 mpg - but in reality its more like 26.3 mpg.

Vincent, i dont have much pictures of install process. I just have a few which is included in the video.
Attached Thumbnails Vortex Generator Experiment-vortex1.jpg  
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Old 06-01-2016, 03:41 AM
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just did some reading about the vortex generators, my internet was not loading your video this morning, i watched it just now

now i see what they are etc and will be interested in following your results with this

thanks for posting about it
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Old 06-01-2016, 09:14 AM
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I would recommend using fuelly.com to help in tracking your mileage and fuel economy. It's a useful tool.
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Old 06-01-2016, 08:47 PM
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Originally Posted by clvincent View Post
just did some reading about the vortex generators, my internet was not loading your video this morning, i watched it just now

now i see what they are etc and will be interested in following your results with this

thanks for posting about it
Here is a link of how to install.


IMO - i wish they sold Airtabs in small quantities rather than 80 pcs.
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Old 09-19-2016, 11:42 AM
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adding my fuelly signature
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Old 02-05-2019, 02:10 PM
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Nice! Glad to see people use their high end Sports/Exotic cars. Make sure to give it a damn good cleaning inside and out after the snow melts and get that salt off.
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