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aerohead · 06-11-2011, 03:23 PM

I was data mining for spoiler info and crossed paths with the old article by CAR and DRIVER on the 'Crisis Fighter Pinto'.
In the article they mentioned how,in March,'74,Porsche had already changed the 911 Carrera tested in February,'74,from a 45-degree upswept rear spoiler,to a very long nearly-horizontal wing-like surface with capping plates, extending from the decklid.
They surmised that the new spoiler for this 911 Carrera RSR provided the same downforce as the Carrera but without the drag penalty of the steep up-sweep.
The RSR finished 2nd at Le Mans,won at Daytona,won the Trans Am Championship,and also won the Targa Florio that year.
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I do not have a 'true-length' photo of the car,so I can't say how far the spoiler extended,but it was VERYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY long!
No risk to pedestrians though as this was strictly a full race car.
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I do not have a large dry lakes racer database but this 1974 RSR may be the progenitor of all the 'Bonneville'-type foils.

06-11-2011, 03:23 PM	#22 (permalink)
aerohead Master EcoModder Join Date: Jan 2008 Location: Sanger,Texas,U.S.A. Posts: 16,268 Thanks: 24,393 Thanked 7,360 Times in 4,760 Posts	"Bonneville-style"-origins? I was data mining for spoiler info and crossed paths with the old article by CAR and DRIVER on the 'Crisis Fighter Pinto'. In the article they mentioned how,in March,'74,Porsche had already changed the 911 Carrera tested in February,'74,from a 45-degree upswept rear spoiler,to a very long nearly-horizontal wing-like surface with capping plates, extending from the decklid. They surmised that the new spoiler for this 911 Carrera RSR provided the same downforce as the Carrera but without the drag penalty of the steep up-sweep. The RSR finished 2nd at Le Mans,won at Daytona,won the Trans Am Championship,and also won the Targa Florio that year. ================================================== ======== I do not have a 'true-length' photo of the car,so I can't say how far the spoiler extended,but it was VERYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY long! No risk to pedestrians though as this was strictly a full race car. -------------------------------------------------------------------------- I do not have a large dry lakes racer database but this 1974 RSR may be the progenitor of all the 'Bonneville'-type foils.