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Big Dave · 06-13-2016, 02:37 PM

You see these things all the time these days on the superslab. If they didn’t work, truckers wouldn’t bother with them.

Semi Truck TrailerTail® Fuel Savings Technology | STEMCO

You’d have to do some sort of variation to make them easily folded down (for city driving) and deployed for road driving.

06-13-2016, 02:37 PM	#36 (permalink)
Big Dave Master EcoModder Join Date: Jan 2008 Location: Steppes of Central Indiana Posts: 1,319 The Red Baron - '00 Ford F-350 XLT 90 day: 27.99 mpg (US) Impala Phase Zero - '96 Chevrolet Impala SS 90 day: 21.03 mpg (US) Thanks: 0 Thanked 186 Times in 127 Posts	You see these things all the time these days on the superslab. If they didn’t work, truckers wouldn’t bother with them. Semi Truck TrailerTail® Fuel Savings Technology \| STEMCO You’d have to do some sort of variation to make them easily folded down (for city driving) and deployed for road driving. __________________ 2000 Ford F-350 SC 4x2 6 Speed Manual 4" Slam 3.08:1 gears and Gear Vendor Overdrive Rubber Conveyor Belt Air Dam