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Rear wing options and feedback

Looking at rear wing options....
General straight wing, low drag that is good for upto 160mph to go on a 3.6 early 911 track car.

Anyone have any feedback or experience with the GT-250 wings from APR performance?

I understand the Brooke’s wings are no longer available and some questions around the GT predators camber profile that are not substantiated either way.
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77’ 911 Karminrot

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Old 05-21-2018, 09:48 PM
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Lots of guys with Japanese import cars like the APR wings. I haven't seen many on 911's but I think that's mostly due to them not offering a "plug and play" kit.
Old 05-30-2018, 02:09 PM
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Thanks Cory,
From what I can see a lot of work and design behind the APR wings, also look to be finished very well and lots of adjustability build in to the hardware. While no 911 set ups it’s pretty easy to make some uprights so I’m not put offf by that.

Currently one supplier selling them a with a few hundred dollar discount so thinking that their GT250 wing look to be best value for money available right now.
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77’ 911 Karminrot

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http://forums.pelicanparts.com/porsche-911-technical-forum/985164-project-77-new-build.html
Old 05-30-2018, 02:56 PM
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Darien, I just came across this thread, so I rang my old friend at APR.

Super short talk as he's getting off work, but the GT250 is definitely more period correct, camber profiling is neutral, so it won't incur a lot of drag. I'm pretty sure I heard correctly, with a L/D ratio of 8:1. Wing measurement is custom, and you can choose a span from 60" to 71". They don't have any uprights available, so it will have to be custom fabbed, but that's pretty easy to get done.


Although it's not the same wing, he texted me photos of some custom fabbed uprights of 911's. Here's one of them:



Let me know if you have any specific questions and I can forward them over to him!
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Old 06-01-2018, 04:27 PM
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Thanks Eric,
Appreciate the info and the picture, agree uprights look pretty easy to adapt to their attach points. Their wings are finished really well and attach brackets and end plates are fully adjustable.

Initially I didn’t find much info on their wings fitted to old 911, but I have been in contact with APR by phone and email and they were keen to help. Have lots of info available on their website.

Going with the GT-250 in 71” which will be right on the limit of rear track width regulations to suit my car (widebody 77’ 911)
Have a banana already , but this is a lot bigger wing and should be much more efficient in lift/drag ratio, and I prefer the straight wing look...


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77’ 911 Karminrot

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http://forums.pelicanparts.com/porsche-911-technical-forum/985164-project-77-new-build.html
Old 06-01-2018, 05:52 PM
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Not a problem at all! I think my friend said Casey or someone was helping you on your quest for information. I showed him a picture of your car and he knew it already, haha. He did tell me you're in good hands!

Quote:
Originally Posted by DHE11 View Post
Thanks Eric,
Appreciate the info and the picture, agree uprights look pretty easy to adapt to their attach points. Their wings are finished really well and attach brackets and end plates are fully adjustable.

Initially I didn’t find much info on their wings fitted to old 911, but I have been in contact with APR by phone and email and they were keen to help. Have lots of info available on their website.

Going with the GT-250 in 71” which will be right on the limit of rear track width regulations to suit my car (widebody 77’ 911)
Have a banana already , but this is a lot bigger wing and should be much more efficient in lift/drag ratio, and I prefer the straight wing look...
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Old 06-04-2018, 01:44 PM
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Quote:
Originally Posted by Eric at Pelican Parts View Post
Not a problem at all! I think my friend said Casey or someone was helping you on your quest for information. I showed him a picture of your car and he knew it already, haha. He did tell me you're in good hands!
Yes, been talking with KC...
Sent the attach bracket measurements yesterday, so wing can now start being built!
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77’ 911 Karminrot

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Old 06-06-2018, 03:07 AM
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So as to understand the chart, does it say:
Zero angle of attack with what looks like about a 3/4" Gurney flap on the wing gets a 100 lbs of downforce @ 120 mph???
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Old 06-06-2018, 07:50 AM
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Quote:
Originally Posted by 3rd_gear_Ted View Post
So as to understand the chart, does it say:
Zero angle of attack with what looks like about a 3/4" Gurney flap on the wing gets a 100 lbs of downforce @ 120 mph???
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77’ 911 Karminrot

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http://forums.pelicanparts.com/porsche-911-technical-forum/985164-project-77-new-build.html
Old 06-07-2018, 02:06 AM
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Currently use the five and zero settings on a similar type raised wing with a Gurney flap (RIP, Dan G)
The AOA efficiency ratio is COOL data
Glad my uprights are 1/8" thick T-6 alumanum (aluminium)
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1980 911SC
Fiberglass Turbo Flares F&R with a 3.6L conversion

869#
AKA "Gemma"
Old 06-07-2018, 09:31 AM
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APR advised wing is ready.
Picking it up a Thursday... will share some pics after I’ve collected.
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77’ 911 Karminrot

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Old 07-03-2018, 05:02 PM
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Headed out to Pomona this morning to meet the guys at APR and pick up my new wing.
Got to have a look at some of the sections and check out the the construction, carbon bonded ribs, and vacuum formed with pre preg, its very light.



Also very long... even with rear seats down @ 71” it barely fit in the rental car!

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77’ 911 Karminrot

Build Thread:
http://forums.pelicanparts.com/porsche-911-technical-forum/985164-project-77-new-build.html

Last edited by DHE11; 07-10-2018 at 04:54 AM..
Old 07-05-2018, 10:22 AM
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Can you please tell me the weight of your entire fibreglass base & carbon wing if you ever have it off the car together?

Thanks!
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Old 07-18-2018, 10:33 AM
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Hi Chris,
New tail (below) is painted but it and wing are currently not all together and fitted.
Will probably need to wait till i get it home to weight it all as an assembly. Will try and remember to let you know.

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77’ 911 Karminrot

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Old 07-18-2018, 03:01 PM
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