Why did cars have these?

Why did cars have these?

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wildcat45

Original Poster:

8,077 posts

190 months

Monday 31st August 2015
quotequote all
Seeing a picture on the unusual car colour thread brought back something I've been meaning to ask.

Back in the 1970s and 1980s the fashion changed in car design and cars started having one piece front side windows. No quarter light: so the leading edge of the window went down in a line with the A post.

The first car we had that did this was a Chrysker Horizon.. On the door frame there was a little protrusion. See here.




I just noticed the feature on a Pirsche 928.





Other cars of that generation had then, but not all.

It appears to be outside the car and not in contact with the glass. Some sort of seal or guide? Cars don't have them now. Wonder what it was for. Any ideas?

wildcat45

Original Poster:

8,077 posts

190 months

Monday 31st August 2015
quotequote all
Thanks. Something I've been wondering about since 1979 but never got round to asking.

wildcat45

Original Poster:

8,077 posts

190 months

Monday 31st August 2015
quotequote all
So a kind of Vortex generator?

wildcat45

Original Poster:

8,077 posts

190 months

Monday 31st August 2015
quotequote all
I just remembered my Dad wondering about them when I was a little kid. The picture of the 928 jogged my memory. Isn't this World Wide Web thing great!