Georgia Fiero Club Forum
All Things Fiero => Tech Tips, Tech Questions => Topic started by: pgackerman on October 22, 2021, 06:05:39 pm
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Would a small spoiler like these do anything to reduce the vacuum space behind the rear window?
https://spoilerking.com/ (https://spoilerking.com/)
Thinking it would be mounted just above the rear window. Would this reduce drag or increase it? Or do nothing at all?
BTW, I know Pontiac isn't listed. Don't worry about that.
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The link isn’t pulling up for me
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The link isn’t pulling up for me
Try now. Had an extra space in there.
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Aren't spoilers of that type intended to keep the rear window clear of dust, rain, snow and the like?
If you want to see what the air flow is, buy a roll o surveyor's tape at Home Depot and tape 6 inch strips to the deck lid in a balanced pattern, side to side and front to back. Let the trailing edge point to the rear of the vehicle. Also tape them to your vent grills and maybe even a few on the rear window. Take it for a drive out I-20. Get the wifey to video the effect. Pan very slowly so you can view and analyze it. A lip spoiler on the very back end of the deck lid is supposed to help elimiate some of the backflow. I don't know how the fastback air flow is, but I did this on a notchback with spoiler and there was a lot of backflow.
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To understand how it might work research a Gurney flap.
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The history is interesting. Still not sure one of these would help a Fiero.
https://en.wikipedia.org/wiki/Gurney_flap (https://en.wikipedia.org/wiki/Gurney_flap)