@theairflowguy: Tailgate up or down? Real-time CFD comparison on a pickup truck. u/LackSome307 #CFD #drafting #fuelefficiency #aerodynamics #airflow

theairflowguy
theairflowguy
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Region: CA
Friday 07 August 2026 11:29:14 GMT
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frozenblade_j
Susie Deltarune |-/ :
What about vs a bed cover
2026-08-12 19:50:00
83
dl1946
DouglasL :
Driving with the pickup truck tailgate up is more fuel-efficient and aerodynamic than driving with it down. Contrary to the common belief that an open tailgate reduces drag, keeping the tailgate closed creates a "separated bubble" or vortex of slow-moving air in the truck bed. This air pocket acts like an invisible cover, deflecting wind over the tailgate and reducing overall vehicle drag. When the tailgate is lowered, this aerodynamic bubble is destroyed, causing turbulent air to be sucked into the bed and increasing drag. This effect has been confirmed by wind tunnel testing from manufacturers like GM and Ford, as well as by the TV show MythBusters, which found that the tailgate-up configuration allowed a truck to travel significantly further on the same amount of fuel.
2026-08-14 22:02:44
26
ace_duckarmy
Kapkan :
Idk why I started singing that one song I’m bulletproof nothing to lose faraway
2026-08-18 06:57:10
2
vasco.electricist
Vasco Electricista 🇦🇷 :
y alo dijeron los mithbusters, tapa cerrada OK
2026-08-26 12:49:05
2
fatcheese66
Pickle tickle :
what if you have stuff in your truck?
2026-08-07 14:39:16
9
mrbachir0fficial
Ⓜ️ 𝓜𝓻 𝓑𝓪𝓬𝓱𝓲𝓻 official :
عندما تكون السيارة ثابتة اما عندما تتحرك فيختلف الامر
2026-08-18 20:53:19
3
angelica.vargas.433
Mariana Vida :
This is great! 👏
2026-08-18 04:14:51
1
drpepperpug
ً :
do a squarebody
2026-08-08 13:05:47
2
clouddress
clouddress :
Can you do a bicycle
2026-08-09 18:51:15
2
dytcl675zron
dytcl675zron :
lower CD coefficient is better than higher.Am I right?
2026-08-08 09:38:30
3
scout_0021
Red Scout :
@Bigplasma
2026-08-15 23:42:41
2
shimazinga
Jack :
@Bigplasma here you go
2026-08-10 18:40:24
2
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