4-barrel Mike
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Age: 64
Location: Portland, OR
Posts: 1695
Any fool can drive a V8
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« on: July 20, 2007, 11:36:58 PM » |
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to louvering the rear deck lid of a Street Roadster? I've noticed that a number of cars have them.  5.B.3 "...Louvers in the rear deck lid are allowed as long as they are sealed on the inside." The picture is from the online version of the September 2007 Street Rodder magazine coverage of this year's first El Mirage, here: http://www.streetrodderweb.com/events/0705sr_el_mirage/Mike |
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Mike Kelly - PROUD owner of the V4F that powered the #1931 VGC to a 82.803 mph record in 2008!
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LVMAXX
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« Reply #1 on: July 21, 2007, 07:40:05 AM » |
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« Last Edit: October 02, 2009, 01:59:19 PM by LVMAXX »
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4-barrel Mike
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Age: 64
Location: Portland, OR
Posts: 1695
Any fool can drive a V8
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« Reply #2 on: July 21, 2007, 09:26:19 AM » |
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LVMAXX: 5.3.B is the definition section for Street Roadsters, your El Camino is ineligible  Mike |
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Mike Kelly - PROUD owner of the V4F that powered the #1931 VGC to a 82.803 mph record in 2008!
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maguromic
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« Reply #3 on: July 22, 2007, 03:42:01 PM » |
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As the wind travels over the back of a roadster it tends to lift the back up. By having louvers in the right place you can break up the air to help keep the back stable. Depending on the body style, the position and the size and shape of the louver does matter.
Paul Vanderly (sp) had his ’33 Ford roadster in a NASCAR wind tunnel and came up with an optimal placement and shape of louvers for his type of body. I will try to post a picture of his trunk lid soon. But I suspect most are placed for aesthetics than function.
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“If you haven’t seen the future, you are not going fast enough”
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dwarner
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« Reply #4 on: July 23, 2007, 07:57:56 AM » |
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Maybe someone can chime in as to an actual class we might be able to run in?
You were told when you proposed your El Camino that many of the features you had to have would not be allowed in classes that the car may fall into. You have built yourself into Time Only. Not something that appeals to me.
DW
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RichFox
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« Reply #5 on: July 23, 2007, 08:51:09 AM » |
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In reality most of the time, my cars are "time only" My Vega was a record car in 1980 with the GMC in it. But that was a long time ago. In C/CGAlt today, no chance. So if your El Camino makes you happy, enjoy it.
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Stan Back
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« Reply #6 on: July 23, 2007, 01:08:40 PM » |
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Our Street Roadster had its decklid louvered in 1952. I don't think a lot of thought was put into managing the air back then. Fortunately the SCTA has seen fit to allow us to have them -- but with them sealed underneath.
I'm wondering if eliminating the door hinges and flush fitting the doors (like on Model A's) on some Street Roadsters has an even greater effect in air management.
Stan
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Member of the San Berdoo Roadsters – California's most-exclusive roadster club.
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JackD
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Location: San Diego
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« Reply #7 on: July 23, 2007, 02:01:00 PM » |
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Rich has taken the time honored "Rule of Thumb" and has evolved it into the "Rule of Finger" while having more fun. Inrersting concept.  |
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"I would rather lose going fast enough to win than win going slow enough to lose."
"That horrible smell is dirty feet being held to the fire"
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4-barrel Mike
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Age: 64
Location: Portland, OR
Posts: 1695
Any fool can drive a V8
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« Reply #8 on: July 24, 2007, 11:31:44 PM » |
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Aesthetics, history, or a ton of aero tech dollars. Got it!
Thanks, guys.
Mike
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Mike Kelly - PROUD owner of the V4F that powered the #1931 VGC to a 82.803 mph record in 2008!
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LVMAXX
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« Reply #9 on: July 25, 2007, 08:30:39 AM » |
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« Last Edit: October 02, 2009, 01:59:47 PM by LVMAXX »
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