New rear wing
#31
718 GT4 has an actual diffuser that does contribute to negative lift in addition to rear wing and lower spoiler.
The claim is 50% more ‘downforce’ overall for the whole car with no additional drag penalty.
Last edited by TDT; 04-04-2021 at 02:45 PM.
#32
Looks great!
#33
I also just installed this wing, will be taking it to Thunderhill in ~2 weeks to test it out.
It’s gorgeous.
Jacob has also been really helpful in talking through it with me, and DBJ is a pleasure to do business with.
It’s gorgeous.
Jacob has also been really helpful in talking through it with me, and DBJ is a pleasure to do business with.
The following users liked this post:
jwr9152 (04-22-2021)
#34
I have the 1450mm wing. It mounts to the stock uprights in about 10 minutes and requires no modifications to the car. Jacob also has a 1450mm RS wing which has a swan neck mount as well as a larger 1600mm wing. Link to the one I have:
https://designsbyjacob.com/products/...ar-wing-1450mm
https://designsbyjacob.com/products/...ar-wing-1450mm
#35
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Thread Starter
The following 2 users liked this post by electron mike:
alwaysdriving (05-02-2021),
porscheflat6 (04-27-2021)
#36
Drifting
Car has:
- 19" Forgeline GS1R with 265/285 Bridgestone RE71R
- GT4 clubsport camber plates
- Tarett caster pucks, tie rods, and toe links
- -3.0 degrees front camber, -2.5 rear camber, zero toe front, 2mm toe per side rear
With the stock wing, the rear would wiggle significantly with hard braking into T12 at 145+mph. With the DBJ wing the wiggle is essentially gone even with more aggressive braking.
- 19" Forgeline GS1R with 265/285 Bridgestone RE71R
- GT4 clubsport camber plates
- Tarett caster pucks, tie rods, and toe links
- -3.0 degrees front camber, -2.5 rear camber, zero toe front, 2mm toe per side rear
With the stock wing, the rear would wiggle significantly with hard braking into T12 at 145+mph. With the DBJ wing the wiggle is essentially gone even with more aggressive braking.
#37
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Thread Starter
OP back with another update. New PB at COTA after putting the Akra link pipes back on and swapping the JCR rear section back to the stock one. I was over a second quicker compared to my last time out, and more consistent. Definitely more power with the Akra link pipes, but I'm getting more comfortable with the downforce from the wing and am able to take advantage of the extra grip in several places now. This wing rocks!
Last edited by electron mike; 06-15-2021 at 04:00 PM.
#38
Rennlist Member
Question, I test drove a Cayman S a month ago, it was slowly being modified for more of a track car, it had a carbon fiber tail, similar to this, and once I went on the freeway, I noticed the rear wing start vibrating/oscillating in middle part of the wing, I thought that cant be a good thing, have you seen this occur with this wing?
#39
Rennlist Member
How come you removed the JCR rear section?
too much noise?
too much noise?
#40
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Thread Starter
Question, I test drove a Cayman S a month ago, it was slowly being modified for more of a track car, it had a carbon fiber tail, similar to this, and once I went on the freeway, I noticed the rear wing start vibrating/oscillating in middle part of the wing, I thought that cant be a good thing, have you seen this occur with this wing?
Sound and noise level above 4K RPM was amazing, but the drone from 2K->3K gave me a headache so I put the stock rear section back on.
#41
It seems just replacing the OPF is the conservative and popular move if you want to keep things civil and not kill your ears/head
#42
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Thread Starter
#43
Reviving your old thread because I'm curious if you've played with AOA anymore, and if so what have you found?
#44
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Thread Starter
#45
Hey mister, so 20" wheels with 265F/305R is feasible in GT4/Spyder yes? I should probably read the entire thread but which suspension mods would allow it? OEM would do? Many thanks