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Old 05-28-2020, 11:15 AM   #81 (permalink)
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The black plastic, or blackened glass in some cases, is just the exterior where the back pillar is. For some reason, it is in plastic or glass instead of steel. Maybe for glass replacement ease. Anyway, you are right, it makes a convenient mounting point. I wonder if the plastic mouldings could be removed and their mounting points used for a spoiler. I wonder if substntial amounts of double sided trim tape could be part of a mount to glass.

See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.

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Old 05-28-2020, 05:27 PM   #82 (permalink)
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Originally Posted by eagle View Post

also, here is a rear windscreen from a renault scenic with -a quite big - side spoiler which also has these...uhm....holes?

It looks like a normal separation edge. If the holes are real, they may be for the cabin ventilation outlets.
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Old 05-28-2020, 06:48 PM   #83 (permalink)
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Speaking purely from a speculative point of view; that appears to be a perfect location for a Coanda nozzle:

Conclussion: a realization that smacks you upside the head

"Anything is a smoke machine if you use it wrong enough" --AvE
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