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Old 04-03-2020, 02:52 PM   #191 (permalink)
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Yeah, it seems Air Tabs don't work on aerodynamic cars according to the video. However, the video does cite a study which gives credence to their benefit on heavy 18-wheelers, which probably is the main use they are marketed to.

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Old 04-03-2020, 04:19 PM   #192 (permalink)
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But they might be taller!!!
the tires warp at 32psi that could cause aero drag and a blow out lol
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Old 04-03-2020, 04:59 PM   #193 (permalink)
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Quote:
the tires warp at 32psi that could cause aero drag and a blow out lol
Not getting the joke.
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Old 04-03-2020, 08:40 PM   #194 (permalink)
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Quote:
Originally Posted by MeteorGray View Post
Yeah, it seems Air Tabs don't work on aerodynamic cars according to the video. However, the video does cite a study which gives credence to their benefit on heavy 18-wheelers, which probably is the main use they are marketed to.
That is not a very good summary of the video.

1) on some trucks they don't work

2) they can work very well on aerodynamic cars, if used correctly
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Old 04-03-2020, 11:15 PM   #195 (permalink)
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Not getting the joke.
when the air pressure is low, the tires they will have flex in the sidewalls outward compared to the top half of the tire which would cause turbulence ..


some vehicles the tire sitting outside of the wheelwell which would increase the aero drag as well



this is a tire in motion

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Old 04-03-2020, 11:55 PM   #196 (permalink)
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Okay, I get it, I guess.

The pooched-out sidewall is motionless [unless drifting], while the top is moving at 2x the vehicles velocity.

Also much of the turbulence is sideward at ground level as the tread presses the air into the ground. I don't see much solution for that.

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Old 04-06-2020, 05:15 AM   #197 (permalink)
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My guess on aero cars of the future

https://youtu.be/1GueDnf-bWQ
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Old 04-08-2020, 01:37 PM   #198 (permalink)
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video

Thanks Julian! A thoughtful presentation,and compact enough not to lose an Americans' brief attention span.
I hope for a few more years just to see what trends emerge.Thanks again.
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Old 04-10-2020, 03:54 AM   #199 (permalink)
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Measuring the thickness of boundary layers - https://youtu.be/vGwyAQdS1z0

Cheap and easy!
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Old 04-10-2020, 05:00 AM   #200 (permalink)
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Interesting to use repurposed model airplane parts.

It looks like some sort of articulated mount would save a lot of starting and stopping.

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