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Old 12-06-2018, 02:08 AM   #1 (permalink)
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windshield visor, but drag reduction?

I for some reason have it in my head that I want to combine a cowl visor and a sun visor to attempt an effective windshield angle reduction without the whole cut, weld, re-glue hassle of actually moving the windshield.

Maybe something like this http://www.sarona.com/media/images/4..._93_94_95_.jpg with an open top?


This would be on my w126 mercedes, not a full size van fwiw. My hood is longer which in my head would give me more room to work that angle modification.

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Old 12-06-2018, 04:23 PM   #2 (permalink)
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aerohead uses a cowl deflector. Here's an early version:



I suspect the visor is a[n air] trap. Possibly a Gurney flap at the top of the windshield would suffice.
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Old 12-06-2018, 06:21 PM   #3 (permalink)
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If you really want an outside sun visor, you could do a sun visor doubling as a big turning vane to keep the air from overshooting the windshield/roof line

Something like this, turned on its side, all along the top of the windshield, trying not to increase frontal area too much

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Old 12-08-2018, 03:45 PM   #4 (permalink)
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Isn't that like the proposed spoiler for CUVs?
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Old 01-02-2019, 07:46 PM   #5 (permalink)
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While I've been thinking about this I converted an outboard engine cover into a hood blister. The thought was to modify the airflow toward my exhaust stack; now I'm thinking a sun visor with plexiglass between the two will effectively change the windshield angle. I'm slightly worried about being pulled over, but I think I should be able to make it pretty readily removable.
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Old 01-02-2019, 08:51 PM   #6 (permalink)
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Needs pix.



My VLVW design has a three-piece windscreen over the original windshield. It may be drawn as a plastic bubble, but more likely would be perforated sheet steel with some of the web drilled out and a hatch like an armored car in the driver's sightline.
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Old 01-03-2019, 01:55 PM   #7 (permalink)
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Or adapt it to pontiac firebird rear glass? ( but being it rear glass means you lose road-worthiness, at least here (but here it would be illegal anyway))
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Old 01-03-2019, 04:07 PM   #8 (permalink)
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Too bad we can't put blinds inside the windshield
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Old 01-03-2019, 05:04 PM   #9 (permalink)
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Quote:
Originally Posted by freebeard View Post
My VLVW design has a three-piece windscreen over the original windshield. .
Now reverse it

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Old 01-03-2019, 10:56 PM   #10 (permalink)
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A trick of perspective, the other end looks like this:




The tail disappears.

Rear glass doesn't pass DOT standards for a windshield.

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