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05-06-2006, 08:11 PM
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Regular Member
Join Date: Jan 2005
Posts: 192
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Hi all,
not sure if this should be here but here goes anyway. I just watched on mythbusters an episode about driving with the tailgate up causes more drag than with it down. They both drive some sort of pickups which were identical with the same amount of fuel etc.. The results were suprising to say the least, the pick up with the tailgate down ran out of fuel before the tailgate up pickup did which ran a further 30 miles before running out. Then they use some form of wind tunnel (water actually), and found that the pickup model with the tailgate down caused more drag then the pickup with it up. The pickup with the tailgate up caused a bubble of water in the bed and this in turn caused the faster moving water to glide over the bubble and pickup, where the tailgate down bursted this bubble causing the water to push down on the tailgate and cause more drag. So basicly, what do you ute drag racer think? i know a lot of you put it down, have you guys tested this? I just this was an interesting show and would like to see your thoughts on it  Cheers Jim
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BAXR8 A4.......CAI....CATBACK......10,000k's and real tyres at 29psi = 14.057 with a virgin driver :the_finge |
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tailgate up or down? (mythbusters)
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