Quote:
Originally Posted by arctictraveller
I wonder what the sharks teeth are about on the back, and the cut away box? Interesting...........
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Not my SMB but those "shark teeth" are Airtabs. I've seen them used on tractor trailers.
Airtab | Aerodynamic Fuel Savers | Welcome
According to their website:
Airtab® Fuel Savers are small, efficient wishbone shaped vortex generators that are a practical and cost effective solution to the problem of suction or “base pressure” aerodynamic drag at the back of large vehicles and at the tractor/trailer gap.
Airtabs™ deliver fuel savings in the 2% to 5% range, offers several safety benefits, and have been tested in test track, wind tunnel and over-the-road evaluations.
Airtab® Fuel Savers are designed to perform on tractors, trailers, straight trucks, cargo vans, RVs and Buses. Any big box going down the road at highway speeds is a candidate for Airtabs™.