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Old 05-27-2018, 11:58 PM   #1
Bus Nut
Whatthefak's Avatar
Join Date: Apr 2018
Location: Wisconsin N.E.
Posts: 412
Year: 2000
Coachwork: Thomas
Chassis: Thomas
Engine: 5.9
Rated Cap: 72
Air foils?

Weird how they keep saying it keeps the back of the bus clean and hardly mentioned mpg increase

Anyone have one, or think they work?

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Old 05-28-2018, 12:40 AM   #2
Bus Nut
Join Date: Jan 2016
Location: Greater Boston
Posts: 504
I believe that it works - at keeping the back of the bus clean.

I actually saw a bunch of buses on the highway with those on them about 2 months ago - in Maine. (Now I know what they are.) I can see how on dirt roads, or in states that sand and salt the roads, getting rid of the giant cloud of spray, salt, muck, and water behind the bus would be a good thing, both for the bus driver, and other cars on the road.

As for any gain in MPG. . . maybe, maybe not. Any turbulence creates drag - weather that's turbulence at the front, OR the back. It should help, but I don't know that it will help enough to really be statistically provable - which you have to be able to do to market it as an MPG-improving tool.
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