Cup style rear wing for the GT3
08-24-2015, 11:15 PM
#17
Former Vendor
Thread Starter
Cup style rear wing for the GT3
Originally Posted by Alan C.
Wouldn't that increase on the rear upset the balance on the front?
But you make a good point and that's why we kept the wing at 1.45m width. If it was much wider you would get into issues with the front.
08-25-2015, 11:07 AM
#18
Three Wheelin'
KA are certainly the experts but several points are confusing to us (or maybe just me). The position of stock GT3 wing is not the most efficient height for downforce or low drag, it does produce downforce but is not as efficient as RS wing height (or cup cars) because of distance off rear deck and up in cleaner less disrupted airflow off car and more air is hitting surface of wing so you get more downforce with less drag at given rake angle. To produce more downforce with your design at stock height it would come either from extending it, widening it (which you didn't do according to your post) or both to give it more airflow footprint or to rake the angle of attack more aggressively which produces substaintially more drag? Do you have any back to back track times vs stock wing at several different tracks? How did you derive a 25% (increase from stock??) downforce?
08-25-2015, 12:24 PM
#20
Former Vendor
Thread Starter
Cup style rear wing for the GT3
Originally Posted by autoxerGT3
cannot tell from photos but it does not appear to have tail light built in? so track only use?
08-25-2015, 06:25 PM
#21
Burning Brakes
The lower, convex surface of the wing is the active surface which creates downforce and requires a laminar flow of air which remains attached to the wing.
The Brakelight on the lower surface of your wing (and the standard OEM Wing)
disturbs the airflow and reduces downforce in that area.
The GT3RS Wing and the Crawford Wing has a totally smooth lower surface which does not disrupt laminar flow.
Both of those wings relocate the 3rd Brakelight to an inactive area that will not
interfere with laminar flow and therefore increase the Wings efficiency.
You are also losing effectiveness and blocking rearward vision by mounting it
too low. Both the RS and Crawford Wing are mounted higher, the RS at 47 inches
above the ground only blocking a few top inches of rear window visibility and
the Crawford Wing at 49 inches above the ground not blocking any of the mirror's view through the rear window. I find seeing out the rear window extremely useful
both on the road and the track.
The Crawford Wing contains a mechanism built within the wing so that its
Angle of Attack can be easily changed, thus reducing or increasing the effective
downforce of the Wing with the special tool supplied with the Wing Kit. I don't
see any way that yours can be adjusted beyond the very small range provided by
the standard OEM mounting bolts.
It may be worthwhile for you to fabricate metal or composite mounting pillars with
brake lights mounted, wiring harness, and angle adjustment as Crawford did.
Again, IMHO, a Wing with additional downforce improves the great handling of our GT3s. Test and Reviews by Pro Drivers such as Randy Pobst have noted the snap oversteer of the GT3 when driven at the limit on racetracks and I believe
the Crawford Wing brings the car closer to the incredible handling of my GT3RS.
I run my Gt3's Crawford Wing at 10 degrees up for maximum downforce with my Front and Rear Rollbars remaining in the Center (Neutral) position as delivered OEM from Porsche. if I change Springs, Shocks or Tires and observe undesirable understeer, I have the simple options of flattening the Wings Angle of Attack to reduce downforce or adjusting Front and / or Rear Rollbars to compensate for it.
Since my GT3RS will take a while to break-in, after I return from the Frankfurt Auto Show, I'll be instructing in my GT3 at Daytona, Sebring and Roebling Road during October and will be glad to take you out on any of those Tracks with me. PM me if I can be any help.
08-25-2015, 11:41 PM
#23
Rennlist Member
IMHO, It is a very nice looking wing but its function can be improved considerably.
The lower, convex surface of the wing is the active surface which creates downforce and requires a laminar flow of air which remains attached to the wing.
The Brakelight on the lower surface of your wing (and the standard OEM Wing)
disturbs the airflow and reduces downforce in that area.
The GT3RS Wing and the Crawford Wing has a totally smooth lower surface which does not disrupt laminar flow.
Both of those wings relocate the 3rd Brakelight to an inactive area that will not
interfere with laminar flow and therefore increase the Wings efficiency.
You are also losing effectiveness and blocking rearward vision by mounting it
too low. Both the RS and Crawford Wing are mounted higher, the RS at 47 inches
above the ground only blocking a few top inches of rear window visibility and
the Crawford Wing at 49 inches above the ground not blocking any of the mirror's view through the rear window. I find seeing out the rear window extremely useful
both on the road and the track.
The Crawford Wing contains a mechanism built within the wing so that its
Angle of Attack can be easily changed, thus reducing or increasing the effective
downforce of the Wing with the special tool supplied with the Wing Kit. I don't
see any way that yours can be adjusted beyond the very small range provided by
the standard OEM mounting bolts.
It may be worthwhile for you to fabricate metal or composite mounting pillars with
brake lights mounted, wiring harness, and angle adjustment as Crawford did.
Again, IMHO, a Wing with additional downforce improves the great handling of our GT3s. Test and Reviews by Pro Drivers such as Randy Pobst have noted the snap oversteer of the GT3 when driven at the limit on racetracks and I believe
the Crawford Wing brings the car closer to the incredible handling of my GT3RS.
I run my Gt3's Crawford Wing at 10 degrees up for maximum downforce with my Front and Rear Rollbars remaining in the Center (Neutral) position as delivered OEM from Porsche. if I change Springs, Shocks or Tires and observe undesirable understeer, I have the simple options of flattening the Wings Angle of Attack to reduce downforce or adjusting Front and / or Rear Rollbars to compensate for it.
Since my GT3RS will take a while to break-in, after I return from the Frankfurt Auto Show, I'll be instructing in my GT3 at Daytona, Sebring and Roebling Road during October and will be glad to take you out on any of those Tracks with me. PM me if I can be any help.
The lower, convex surface of the wing is the active surface which creates downforce and requires a laminar flow of air which remains attached to the wing.
The Brakelight on the lower surface of your wing (and the standard OEM Wing)
disturbs the airflow and reduces downforce in that area.
The GT3RS Wing and the Crawford Wing has a totally smooth lower surface which does not disrupt laminar flow.
Both of those wings relocate the 3rd Brakelight to an inactive area that will not
interfere with laminar flow and therefore increase the Wings efficiency.
You are also losing effectiveness and blocking rearward vision by mounting it
too low. Both the RS and Crawford Wing are mounted higher, the RS at 47 inches
above the ground only blocking a few top inches of rear window visibility and
the Crawford Wing at 49 inches above the ground not blocking any of the mirror's view through the rear window. I find seeing out the rear window extremely useful
both on the road and the track.
The Crawford Wing contains a mechanism built within the wing so that its
Angle of Attack can be easily changed, thus reducing or increasing the effective
downforce of the Wing with the special tool supplied with the Wing Kit. I don't
see any way that yours can be adjusted beyond the very small range provided by
the standard OEM mounting bolts.
It may be worthwhile for you to fabricate metal or composite mounting pillars with
brake lights mounted, wiring harness, and angle adjustment as Crawford did.
Again, IMHO, a Wing with additional downforce improves the great handling of our GT3s. Test and Reviews by Pro Drivers such as Randy Pobst have noted the snap oversteer of the GT3 when driven at the limit on racetracks and I believe
the Crawford Wing brings the car closer to the incredible handling of my GT3RS.
I run my Gt3's Crawford Wing at 10 degrees up for maximum downforce with my Front and Rear Rollbars remaining in the Center (Neutral) position as delivered OEM from Porsche. if I change Springs, Shocks or Tires and observe undesirable understeer, I have the simple options of flattening the Wings Angle of Attack to reduce downforce or adjusting Front and / or Rear Rollbars to compensate for it.
Since my GT3RS will take a while to break-in, after I return from the Frankfurt Auto Show, I'll be instructing in my GT3 at Daytona, Sebring and Roebling Road during October and will be glad to take you out on any of those Tracks with me. PM me if I can be any help.
08-26-2015, 12:17 AM
#24
Race Director
IMHO, It is a very nice looking wing but its function can be improved considerably.
The lower, convex surface of the wing is the active surface which creates downforce and requires a laminar flow of air which remains attached to the wing.
The Brakelight on the lower surface of your wing (and the standard OEM Wing)
disturbs the airflow and reduces downforce in that area.
The GT3RS Wing and the Crawford Wing has a totally smooth lower surface which does not disrupt laminar flow.
Both of those wings relocate the 3rd Brakelight to an inactive area that will not
interfere with laminar flow and therefore increase the Wings efficiency.
You are also losing effectiveness and blocking rearward vision by mounting it
too low. Both the RS and Crawford Wing are mounted higher, the RS at 47 inches
above the ground only blocking a few top inches of rear window visibility and
the Crawford Wing at 49 inches above the ground not blocking any of the mirror's view through the rear window. I find seeing out the rear window extremely useful
both on the road and the track.
The Crawford Wing contains a mechanism built within the wing so that its
Angle of Attack can be easily changed, thus reducing or increasing the effective
downforce of the Wing with the special tool supplied with the Wing Kit. I don't
see any way that yours can be adjusted beyond the very small range provided by
the standard OEM mounting bolts.
It may be worthwhile for you to fabricate metal or composite mounting pillars with
brake lights mounted, wiring harness, and angle adjustment as Crawford did.
Again, IMHO, a Wing with additional downforce improves the great handling of our GT3s. Test and Reviews by Pro Drivers such as Randy Pobst have noted the snap oversteer of the GT3 when driven at the limit on racetracks and I believe
the Crawford Wing brings the car closer to the incredible handling of my GT3RS.
I run my Gt3's Crawford Wing at 10 degrees up for maximum downforce with my Front and Rear Rollbars remaining in the Center (Neutral) position as delivered OEM from Porsche. if I change Springs, Shocks or Tires and observe undesirable understeer, I have the simple options of flattening the Wings Angle of Attack to reduce downforce or adjusting Front and / or Rear Rollbars to compensate for it.
Since my GT3RS will take a while to break-in, after I return from the Frankfurt Auto Show, I'll be instructing in my GT3 at Daytona, Sebring and Roebling Road during October and will be glad to take you out on any of those Tracks with me. PM me if I can be any help.
The lower, convex surface of the wing is the active surface which creates downforce and requires a laminar flow of air which remains attached to the wing.
The Brakelight on the lower surface of your wing (and the standard OEM Wing)
disturbs the airflow and reduces downforce in that area.
The GT3RS Wing and the Crawford Wing has a totally smooth lower surface which does not disrupt laminar flow.
Both of those wings relocate the 3rd Brakelight to an inactive area that will not
interfere with laminar flow and therefore increase the Wings efficiency.
You are also losing effectiveness and blocking rearward vision by mounting it
too low. Both the RS and Crawford Wing are mounted higher, the RS at 47 inches
above the ground only blocking a few top inches of rear window visibility and
the Crawford Wing at 49 inches above the ground not blocking any of the mirror's view through the rear window. I find seeing out the rear window extremely useful
both on the road and the track.
The Crawford Wing contains a mechanism built within the wing so that its
Angle of Attack can be easily changed, thus reducing or increasing the effective
downforce of the Wing with the special tool supplied with the Wing Kit. I don't
see any way that yours can be adjusted beyond the very small range provided by
the standard OEM mounting bolts.
It may be worthwhile for you to fabricate metal or composite mounting pillars with
brake lights mounted, wiring harness, and angle adjustment as Crawford did.
Again, IMHO, a Wing with additional downforce improves the great handling of our GT3s. Test and Reviews by Pro Drivers such as Randy Pobst have noted the snap oversteer of the GT3 when driven at the limit on racetracks and I believe
the Crawford Wing brings the car closer to the incredible handling of my GT3RS.
I run my Gt3's Crawford Wing at 10 degrees up for maximum downforce with my Front and Rear Rollbars remaining in the Center (Neutral) position as delivered OEM from Porsche. if I change Springs, Shocks or Tires and observe undesirable understeer, I have the simple options of flattening the Wings Angle of Attack to reduce downforce or adjusting Front and / or Rear Rollbars to compensate for it.
Since my GT3RS will take a while to break-in, after I return from the Frankfurt Auto Show, I'll be instructing in my GT3 at Daytona, Sebring and Roebling Road during October and will be glad to take you out on any of those Tracks with me. PM me if I can be any help.
08-26-2015, 08:15 AM
#26
Rennlist Member
IMHO, It is a very nice looking wing but its function can be improved considerably.
The lower, convex surface of the wing is the active surface which creates downforce and requires a laminar flow of air which remains attached to the wing.
The Brakelight on the lower surface of your wing (and the standard OEM Wing)
disturbs the airflow and reduces downforce in that area.
The GT3RS Wing and the Crawford Wing has a totally smooth lower surface which does not disrupt laminar flow.
Both of those wings relocate the 3rd Brakelight to an inactive area that will not
interfere with laminar flow and therefore increase the Wings efficiency.
You are also losing effectiveness and blocking rearward vision by mounting it
too low. Both the RS and Crawford Wing are mounted higher, the RS at 47 inches
above the ground only blocking a few top inches of rear window visibility and
the Crawford Wing at 49 inches above the ground not blocking any of the mirror's view through the rear window. I find seeing out the rear window extremely useful
both on the road and the track.
The Crawford Wing contains a mechanism built within the wing so that its
Angle of Attack can be easily changed, thus reducing or increasing the effective
downforce of the Wing with the special tool supplied with the Wing Kit. I don't
see any way that yours can be adjusted beyond the very small range provided by
the standard OEM mounting bolts.
It may be worthwhile for you to fabricate metal or composite mounting pillars with
brake lights mounted, wiring harness, and angle adjustment as Crawford did.
Again, IMHO, a Wing with additional downforce improves the great handling of our GT3s. Test and Reviews by Pro Drivers such as Randy Pobst have noted the snap oversteer of the GT3 when driven at the limit on racetracks and I believe
the Crawford Wing brings the car closer to the incredible handling of my GT3RS.
I run my Gt3's Crawford Wing at 10 degrees up for maximum downforce with my Front and Rear Rollbars remaining in the Center (Neutral) position as delivered OEM from Porsche. if I change Springs, Shocks or Tires and observe undesirable understeer, I have the simple options of flattening the Wings Angle of Attack to reduce downforce or adjusting Front and / or Rear Rollbars to compensate for it.
Since my GT3RS will take a while to break-in, after I return from the Frankfurt Auto Show, I'll be instructing in my GT3 at Daytona, Sebring and Roebling Road during October and will be glad to take you out on any of those Tracks with me. PM me if I can be any help.
The lower, convex surface of the wing is the active surface which creates downforce and requires a laminar flow of air which remains attached to the wing.
The Brakelight on the lower surface of your wing (and the standard OEM Wing)
disturbs the airflow and reduces downforce in that area.
The GT3RS Wing and the Crawford Wing has a totally smooth lower surface which does not disrupt laminar flow.
Both of those wings relocate the 3rd Brakelight to an inactive area that will not
interfere with laminar flow and therefore increase the Wings efficiency.
You are also losing effectiveness and blocking rearward vision by mounting it
too low. Both the RS and Crawford Wing are mounted higher, the RS at 47 inches
above the ground only blocking a few top inches of rear window visibility and
the Crawford Wing at 49 inches above the ground not blocking any of the mirror's view through the rear window. I find seeing out the rear window extremely useful
both on the road and the track.
The Crawford Wing contains a mechanism built within the wing so that its
Angle of Attack can be easily changed, thus reducing or increasing the effective
downforce of the Wing with the special tool supplied with the Wing Kit. I don't
see any way that yours can be adjusted beyond the very small range provided by
the standard OEM mounting bolts.
It may be worthwhile for you to fabricate metal or composite mounting pillars with
brake lights mounted, wiring harness, and angle adjustment as Crawford did.
Again, IMHO, a Wing with additional downforce improves the great handling of our GT3s. Test and Reviews by Pro Drivers such as Randy Pobst have noted the snap oversteer of the GT3 when driven at the limit on racetracks and I believe
the Crawford Wing brings the car closer to the incredible handling of my GT3RS.
I run my Gt3's Crawford Wing at 10 degrees up for maximum downforce with my Front and Rear Rollbars remaining in the Center (Neutral) position as delivered OEM from Porsche. if I change Springs, Shocks or Tires and observe undesirable understeer, I have the simple options of flattening the Wings Angle of Attack to reduce downforce or adjusting Front and / or Rear Rollbars to compensate for it.
Since my GT3RS will take a while to break-in, after I return from the Frankfurt Auto Show, I'll be instructing in my GT3 at Daytona, Sebring and Roebling Road during October and will be glad to take you out on any of those Tracks with me. PM me if I can be any help.
08-26-2015, 09:28 AM
#27
Given that the stock GT3 wing makes like 30-40kg at 125mph you should sell your wing to Boeing and become a millionaire. 250kg at 100mph... Seriously.
