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1. Down Force Spoiler - - Aeronautics Question (score: 1): Author: Dick J <lsr_man@yahoo.com>; Date: Fri, 16 Jan 2004 12:44:59 -0800 (PST); I've been studying every door slammer I can find to determine the best way to get down force on the back of my Studebaker, and a basic question comes to mind. The most common method I have found is t; /html/land-speed/2004-01/msg00288.html (8,291 bytes)
2. RE: Down Force Spoiler - - Aeronautics Question (score: 1): Author: "Mathew Sanchez" <mathew.sanchez@btinternet.com>; Date: Fri, 16 Jan 2004 21:13:52 -0000; Two posts in six months? I'm not sure what the rules are with NHRA but with PRA (VW) the restriction is that the spoiler has to be no higher than the bottom of the rear screen which is why a lot of d; /html/land-speed/2004-01/msg00289.html (8,982 bytes)
3. Re: Down Force Spoiler - - Aeronautics Question (score: 1): Author: Flowbench@aol.com; Date: Fri, 16 Jan 2004 16:58:41 EST; << Wouldn't it make more sense to use a smaller spoiler (maybe only 1" tall) at the top of the rear window where the laminar flow is still tight against the curve of the body? >> Dick, yep. But is it; /html/land-speed/2004-01/msg00295.html (8,262 bytes)
4. Re: Down Force Spoiler - - Aeronautics Question (score: 1): Author: Dick J <lsr_man@yahoo.com>; Date: Fri, 16 Jan 2004 14:13:10 -0800 (PST); Flowbench@aol.com wrote:.. .. ..Dick, yep. But is it legal? Nope!! Ah yes, I momentarily forgot about the rules - - - speaking of which, I guess I'd better get a new rule book forthwith - - now that; /html/land-speed/2004-01/msg00297.html (8,545 bytes)
5. Re: Down Force Spoiler - - Aeronautics Question (score: 1): Author: "Thomas E. Bryant" <saltracer@awwwsome.com>; Date: Fri, 16 Jan 2004 14:14:00 -0800; The best aero device that the Studebakers employ is the venting of the deck behind the rear window to underneath the car. These car used to fly at about 180 MPH. The vent cured the problem. With tha; /html/land-speed/2004-01/msg00298.html (9,358 bytes)
6. Re: Down Force Spoiler - - Aeronautics Question (score: 1): Author: "James Tone" <gmc6power@earthlink.net>; Date: Fri, 16 Jan 2004 17:13:59 -0800; Listen to Tom. It's the best thing to do on all coupes. A few years ago I mentioned the vent to a Studebaker competitor and he said he didn't need one because the that was "old days" before the new s; /html/land-speed/2004-01/msg00308.html (9,727 bytes)
7. Re: Down Force Spoiler - - Aeronautics Question (score: 1): Author: Skip Higginbotham <saltrat@pro-blend.com>; Date: Fri, 16 Jan 2004 17:45:28 -0600; Why not? Rulebook says "Device on the rear upper portion of the body". Even the figure could well be the rear of the top. And the next question might be "Why not?". I think that Dick has a valid poi; /html/land-speed/2004-01/msg00310.html (8,901 bytes)
8. Re: Down Force Spoiler - - Aeronautics Question (score: 1): Author: Bob Denton <foxriverkid@earthlink.net>; Date: Fri, 16 Jan 2004 20:59:38 -0800; Interesting comments regarding roadsters and deck venting. I curious about a couple of things. Where on the deck are they located? On the flat top part?, Or down-the-curve, so to speak. Would louvers; /html/land-speed/2004-01/msg00314.html (10,339 bytes)
9. Re: Down Force Spoiler - - Aeronautics Question (score: 1): Author: "James Tone" <gmc6power@earthlink.net>; Date: Fri, 16 Jan 2004 21:23:19 -0800; It's not an air vent it's an air duct. The rule book definition is specific. Roadsters usually use 3 to 4" tubes from the rear axle area of the floorboard to the deck lid. It's design is predicated o; /html/land-speed/2004-01/msg00316.html (9,797 bytes)
10. Re: Down Force Spoiler - - Aeronautics Question (score: 1): Author: Flowbench@aol.com; Date: Sat, 17 Jan 2004 00:51:06 EST; << "Device on the rear upper portion of the body". >> My answer didn't seem to go though. Pg 57 of the '03 rule book, 2nd paragraph, "Roof mounted spoilers..............." I rest my case. Mike; /html/land-speed/2004-01/msg00318.html (8,446 bytes)
11. Re: Down Force Spoiler - - Aeronautics Question (score: 1): Author: Higginbotham Land Speed Racing <saltrat@pro-blend.com>; Date: Sat, 17 Jan 2004 08:11:07 -0600; Your answer went through the first time but just to me. Thank you for your answer. Yep, that is the case for Altered (I didn't look close enough the first time). I didn't see the statement for Comp; /html/land-speed/2004-01/msg00321.html (9,257 bytes)
12. RE: Down Force Spoiler - - Aeronautics Question (score: 1): Author: "Albaugh, Neil" <albaugh_neil@ti.com>; Date: Mon, 19 Jan 2004 09:59:20 -0600; This rear "vent" sounds like a basic form of the underside venturi that most race cars now use to generate downforce. Regards, Neil Tucson, AZ It's not an air vent it's an air duct. The rule book de; /html/land-speed/2004-01/msg00350.html (10,185 bytes)
13. Re: Down Force Spoiler - - Aeronautics Question (score: 1): Author: "Thomas E. Bryant" <saltracer@awwwsome.com>; Date: Mon, 19 Jan 2004 08:55:36 -0800; By my comments, I suspect that you know that I am a novice when speaking of aerodynamics, but, it is my understanding that the vent function is to break the lift created by the low pressure over the; /html/land-speed/2004-01/msg00354.html (8,615 bytes)
14. RE: Down Force Spoiler - - Aeronautics Question (score: 1): Author: "Albaugh, Neil" <albaugh_neil@ti.com>; Date: Mon, 19 Jan 2004 11:08:30 -0600; The idea behind an underside venturi is to do something similar-- create a low pressure area under the rear of the car; this creates a net downforce. Unfortunately the rule book says you can't use a; /html/land-speed/2004-01/msg00357.html (9,308 bytes)

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