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Old 01-30-2018, 07:01 PM   #55 (permalink)
mannydantyla
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Join Date: Jan 2018
Location: Lawrence, Kansas
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Aerokee - '97 Jeep Cherokee XJ sport
90 day: 18.22 mpg (US)

Scrambler - '74 Honda CL200 Motorcycle
90 day: 55 mpg (US)
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What about this? Should I also test a boxed cavity where the extension panels are "blown" as the Georgia Tech folks call it? https://www.slideshare.net/Hondafana...-backed-trucks



They claim 5-6% improvement in fuel economy. They also tested a Suburban but it's unclear how that worked out for them, at least I can't make heads or tails of it.



It's not the best slideshow ever but it's interesting. Raises more questions then it answers for me though.

Another image by Aerohead/Phil Knox/PRK:

http://i1271.photobucket.com/albums/...titled1_16.jpg


Something about the panels being 42% the length of the body to get maximum benifit. That's far too much for me. I saw somewhere that someone said 4" is enough to get a significant improvement. Length of my jeep is 167 inches, 4 inches would be 2.4%, and 70 inches would be 42%.

That seems absurd to me. Almost half the length of the vehicle! I don't know about that but I also don't know much (at least I know enough to know that!)

This isn't boding well but I still want to test it. Either with a scan tool or by doing the down-hill speed thing.

Last edited by mannydantyla; 01-31-2018 at 06:06 PM..
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