Porsche 718 Cayman GT4 RS - Sonoma -
ฝัง
- เผยแพร่เมื่อ 31 มี.ค. 2024
- Thanks to BR Racing for assisting in car setup.
First track day in the GT4 RS. This is one clean lap from a morning session, about five laps into that session after having to abort prior attempts due to traffic (this would remain a theme throughout the day). Given the margin, TC intervention, and other small mistakes, I'm certain a sub-1:40 is in the cards for this car on this freshly repaved track.
I started the day with ESC off and TC on, just to keep myself from doing anything dumb with 500bhp. You'll see it intervening in a few key places including the exit of T2. Later in the day, I turned everything off, and I'm happy to report that the car remained as confidence-inspiring as ever - and four tenths faster through sector 1 alone. Also, note to self: stop short-shifting! 9kRPM!
I could still do with a little more front-end grip, but overall I was happy with the balance of the car on this setup.
First time on track out of the way, I can't wait to have it out again in a smaller group where I have room to do a proper single out lap, single push lap attempt.
Only modification: Yokohama Advan A052 in OEM sizes. By the way, they held up very well! - ยานยนต์และพาหนะ
![Modded Porsche 718 GT4 vs GT4 RS - [GT4 Track Review, Track Battle]](http://i.ytimg.com/vi/Qazr4PYokQc/mqdefault.jpg)
I was impressed by how soon and hard you were on the gas exiting the carousel!
The data shows I was pulling almost 1.7g at the exit 😅.
Nuts. It's educative to see your "zero steer" trajectory through turns 1 and 9.
Amazing driving, well done! Are you braking through 3a/3b and the esses? Seems like you're just lifting!
Thanks! I recognize your car :).
Through 3 and into 3a I was lightly trailing the brakes, throwing the car into the compression and trusting it would hold. I found that if I over-did this the car would oversteer in the middle of the corner.
It might be a little faster to hold the car further to the left and optimize the run to 4, but I think it’s easier to under-drive the car and not take advantage of the extra grip from compression that way; plus, there’s more overall direction change.
Awesome driving! The car seems to rotate beautifully through the corners. I heard people were complaining about the understeer for this car. What setup/hardwares are you currently running on the car?
Thanks! I thought the balance was pretty good, just enough rotation in the slower speed corners with nice stability at higher speeds. I could probably deal with even more front end grip.
Stock hardware, Yokohama A052 tires in OEM sizes, roll bars set to full soft front/full stiff rear, small drop to the front end for more rake, and max negative camber in the front with a little less in the year.
@@teddyframhein Thanks for sharing the info! I have one coming in very soon and plan to bring it track. So I was reading the forum where people would get camber plates and rear toe links to achieve big camber front and rear to eliminate the understeer. Base on your setup, I believe the roll bars and the rake will do the trick to eliminate the understeer.
Nice!
This is also heavily dependent on driver input, so I tend to take most of what I read on forums with a grain of salt... If you're not using the brakes to load the front of the car on the way into a corner, or popping off the brakes and jumping to throttle too early, you're always going to experience understeer. And if you develop a car to not understeer in that scenario, it's going to be impossible to control as you learn to better blend braking and steering.
Your mileage may vary!
@@teddyframhein Very well said!
You have to tell me your camera and overlay set up. I love this. I see Race Chrono Pro but are you using go pro or iPhone?
I'm using a GoPro mounted just behind the seats using a clamp, along with a kiwi4 OBD2 adapter and RaceBox Mini S, all paired to RaceChrono Pro running on my iPhone - which you'll see in my autocross videos is mounted on the left side of the windshield.
This has been the most stable, flexible method of data and video collection I've found.
Great driving
Thanks!
@Teddy How did you actually mount eh GoPro inside the vehicle? What gear did you use for that?
I use one of these, which clamps to the bar just behind the seats (look it up on Amazon or elsewhere): "Manfrotto 035RL Super Clamp with Standard Stud"
Ah so you have a cage in the back?
Not yet. The bar I'm talking about here is present on all Caymans and sits just behind the seats at about the shoulder line.
Fast AF. On stock car!!
Thanks! It's hard to figure where a lap like this stands in the grand scheme of things. I'm looking forward to getting back out there in any case.
Your time in the 992 GT3 RS is also very impressive!