Venting the Targa Top |
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Venting the Targa Top |
john rogers |
Sep 15 2004, 12:02 PM
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#1
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Senior Member Group: Members Posts: 1,525 Joined: 4-March 03 From: Chula Vista CA Member No.: 391 |
Has anyone tried using a spacer under the rear of the Targa top, say about an inch or two to make a vent? Since my top has to be and is bolted down in the rear I thought this might help break the vacuum that forms behind the rear window? I have seen a couple with plexiglass/lexan rear windows with several holes across the width which would do the same thing I think?
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maf914 |
Sep 16 2004, 08:44 AM
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#2
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Not a Guru! Group: Members Posts: 3,049 Joined: 30-April 03 From: Central Florida Member No.: 632 Region Association: None |
QUOTE(bob91403 @ Sep 15 2004, 05:36 PM) I saw a device on "This old house" you might be interested in. It's made to drill holes in wood at a 45' angle, so you can use screws to do butt corner joints. I don't remember what it's called, but it gives you a constant repeatable angled hole. Drill the hell out of your roof. It will still give you shade. And with the holes angled toward the back of the car, the air flow over the top of the roof will draw air from the cockpit. I have no idea how much unwanted upforce it would generate. Just a thought. For some reason I don't think there is going to be much difference in a hole drilled at a 45 degree angle and one drilled at a 90 degree angle when we're talking about a 1/16 inch thick roof panel. About the ony difference will be that one hole is oblong and one is round! I think that you would relieve cockpit pressure with almost any type of hole in the roof. The air flowing over the windshield and roof is moving quite fast, which creates a low pressure area (the old Bernoulli equation). Ever notice when driving with the top off how much more air is drawn through the fresh air or heater vents? |
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