07-12-2011, 10:58 PM
65th Anniversary CLIPPER
1996 36' Clipper Bus
, British Columbia
Join Date: May 2009
Air Tabs, Vortex Generator, Clipper
Aerodynamic Fuel Economy Savers for Road Vehicles
Yes, these are "AIR TABS" vortex generators. They have been around for a few years and are now common on many new highway trucks and multi trailer combinations (Super B Trains. etc.).
The motorhome/RV market is catching on slowly to the benefits of the "AIR TABS"
On the Clipper, they have 1) improved mileage. 2) helped cool pusher engine temperatures. 3) keeps the rear of the Clipper cleaner, 4) reduces the push when heavy vehicles overtake at high speed. 5) keeps the toad cleaner.
See this thread for some RV questions about the problems that the Air Tabs help remedy.
Member "Lewster" is a source for more info for motorhomes. Contact him for more info.
The Air Tabs will work on any unit but will give greater results on any squared off corner such as on a moving box trailer.
Originally Posted by doorgunner
Are those vortex generators on the aft side of your rig?
Have you run a reynolds number analysis on your rig?