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SportTrac Discussion
General Sport Trac Discussion
Help Me! Horrible Gas Mileage!
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<blockquote data-quote="Richard L" data-source="post: 915510" data-attributes="member: 52972"><p>Rich,</p><p></p><p>That is now a false assumption. The Myth-Busters TV showed that modern trucks generate and air bubble in the cargo bed that allows air to flow smoothly over the bed and over the tailgate. A tonneau cover makes little difference.</p><p></p><p></p><p></p><p>Mileage tests done on this site years ago show that there is not significant mileage improvement for the ST with the tonneau cover vs and ST without the tonneau cover. Until I saw the proof on the Myth-Busters, I thought the reason was related to the shorter ST pickup bed, but it appiles to all pickups. Removing or lowering the tailgate actually reduce fuel mileage in the Myth Busters test. The windtunnel and submerging a model in a tank of flowing water with confetti confirmed the bubble theory and clearly showed how the turbulant air formed a bubble in the bed and the air passed smoothly over the bubble. So it is not even close to acting like a parachute as most people think.</p><p></p><p></p><p></p><p>...Rich (The other Rich)</p></blockquote><p></p>
[QUOTE="Richard L, post: 915510, member: 52972"] Rich, That is now a false assumption. The Myth-Busters TV showed that modern trucks generate and air bubble in the cargo bed that allows air to flow smoothly over the bed and over the tailgate. A tonneau cover makes little difference. Mileage tests done on this site years ago show that there is not significant mileage improvement for the ST with the tonneau cover vs and ST without the tonneau cover. Until I saw the proof on the Myth-Busters, I thought the reason was related to the shorter ST pickup bed, but it appiles to all pickups. Removing or lowering the tailgate actually reduce fuel mileage in the Myth Busters test. The windtunnel and submerging a model in a tank of flowing water with confetti confirmed the bubble theory and clearly showed how the turbulant air formed a bubble in the bed and the air passed smoothly over the bubble. So it is not even close to acting like a parachute as most people think. ...Rich (The other Rich) [/QUOTE]
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SportTrac Discussion
General Sport Trac Discussion
Help Me! Horrible Gas Mileage!
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