montoya

One thing that stands out is the stupid gearing. Just think what it could do with proper gearing!

doba_s

If he is a pro his line through 14 is definitely different and I would love to hear why.

But you can clearly see you cary more speed than him through 14/15 when you apex 14 and he doesn't.

I think he is faster through some turns because he broke less and carried more momentum.

GT3 feels like a boat compare to GT4 when you drive them back to back.

Oaktown

Fun!
Can't wait.

Is the instrument data from Sport Chrono package?

Was not going to purchase. Currently not on my 2016 GT3 build.
Recommend?

Thanks for sharing.

John@Fabspeed

Good driving!! Somewhat off topic, but does 2nd gear in the GT3 really go to almost 100mph and 3rd gear to almost 140?!?

orthojoe

Nope, instrument data is from aim solo smartycam

Nope. Aim uses calculations for gearing and it is off. I have to modify the math channel in order for it to display correctly on my videos

mwar99

It doesn't seem right to me. Maybe the gear indicator is off? I only get to around 45 in first gear before coming close to hitting redline and the video shows almost 70(?) and second gear was closer to 80 for me. Not sure why there is such a difference.

John@Fabspeed

I figured it was off. Looks like you had a blast!

MaxLTV

He understeered into 14 several times. It was not an intended line but rather a driver mistake or car deficiency. I asked about it to make sure. He was running rear bars on full stiff and front on full softvand had understeered anyway, but not too much. Probably something that can be negated with driving style.

MaxLTV

You need to add 1 to the gear number because the calculated gear algo does not recognize the 1st gear. It can be fixed but I just never bothered.

mooty

i wish i was. but the race group had time conflict ugh...

dave also races BSR. he's about 2 seconds faster than the rest of us. and 3-4 seconds ahaed of the next batch of BSR

:-)

i think it will be about 4 seconds for a 2 min track


someone mentioned line through T14. there are many lines there. but if you dont get the apex of T15 you can take out most of the track to the left, we drive over all the bumps, you will be on throttle earlier with less push. if you kissed the traditional apex at T14, you will have some push, you have to fix it (let off throttle a bit) then your exit speed may not be any faster.

i will do both line depending on who's ahead or behind me. not sure why dave chose his line (maybe car was pushing), but he is on the regular apex when in his BSR or GT3.

F1CrazyDriver

MaxLTV,

Glad to see you have improved a lot. I remember when you had your M3. You are the fastest, 991 gt3 driver in norcal that i have seen post videos. I'm no expert in cars but I have a nice padded resume in karts. Yes I know different cases but some translate back to cars. I'm not the best driver at DE, but let me give you my input on why you are catching him under braking.

First, have you ever driven a Cayman or boxster on track, pushing it hard ?
I have once but I came to a quick conclusion with that car. You scrub off speed as you are turning the wheel vs. using the brakes as much as one would with a 911 (similar like driving a kart). That said, I have not driven a 991 gt3 yet so the last bit is an assumption and so is this bit; In theory with a standard 911 (I'm not sure on the 991 gt3, due to the rear turning wheel thing) you want to load the front tires to give it some grip hence trial braking and braking harder in general. That said, you could setup your car to push ever so slightly to scrub off speed as you turn in like a GT4 (car is probably setup from the very get go like this). The other alternative here is, the driver of the GT4 knows he has 100hp deficit therefore, he slows down the car earlier, gets on the throttle earlier to get engine whine up to maximize exit speed. All speculation as i have not driven a gt4.

That said, my input for you (hard and i hate doing this from a video) would be hit the brakes a bit earlier (say 20-30 feet) use less brakes, and start modulating throttle at or before apex. I have noticed your throttle input at times is 0 -50-100% throttle only, and you do it at or after apex. Play with it, that's why you have a N/A....If your video is right, and you are doing 0-50-100% throttle, it tells me you are leaving a lot of grip on the table on entry speed.

Give that a go and I can see you getting to 1.55's easy at thill.

boxer-11

I had the good fortune to have a chance over the course of three days last week to drive a 991 Turbo S, GT4 and GT3 in open lapping on the Barber Motorsports Park track. The last of those days I got to try them in back to back sessions for around a half hour each.

Obviously all three are quite different animals. If there were beer on hand I could probably get quite carried away talking about my impressions but in short... I came away really happy with my 991TT as a DD and occasional track day toy but, boy, I was startled by how much more confidence the GT3 inspired on the track by comparison. The mind boggles at what the GT3 RS might feel like given these baselines.

If only the GT cars weren't so hard to get allocations for (...now that I've figured out exactly how much I'd really like to have one to add to the garage)

ShakeNBake

I would like to see Vbox data side by side. That's the only way you are going to definitely say anything about braking later, throttle before apex - etc. Eye can play huge tricks on you.

And 100hp is a 100hp.

24Chromium

Spot on. This has been my sole focus for the past year - carry more speed thru the corner, particularly on entry. And it's way harder than it looks or sounds. Keeping the car flowing and composed after releasing the brakes and beginning turn-in is like learning how to become an old master at oil painting. There are so many things to manage and prevent you from doing it smoothly. My nemesis is muscle memory and self-preservation. I hit the brakes and turn in at Thunderhill mainly on muscle memory (I'm way better at adjusting my reference points at other tracks where I'm not as familiar). And self-preservation tends to make you hit the brakes harder or turn the wheel more aggressively than we should.

I do enjoy the challenge though. This is a life-long pursuit!

MaxLTV

One thing about both brakes and throttle earlier. I'm using Aim Solo on OBD port, and it has about 0.1-0.2sec delay for pedal overlay graphics, which is about 1-2 car lengths, or about 20-30 feet you are suggesting. It's pretty obvious if you compare engine sound to the throttle position indicator. So it does look like I'm way too late on brakes and on throttle, but that's not always the case or not to the extent it may seem. I asked around how to fix it, and the consensus is that switching to canbus is going to help.

But your advice is spot on, especially on braking - I have difficulty getting consistent turn entry speeds with GT3, mostly because it's just too fast and rate of speed change is so high, so what I started dong is braking a bit earlier and then half-releasing the brakes some distance before turn in to reduce the rate of speed change and make it easier to hit the right entry speeds consistently. According to the coach that advised this, it's not the way to drive all the time, but rather an exercise. It seems to be helping me with T1 and T8, but still a long way to go there.

And you are right about the entry speed, particularly in fast corners - I could carry in more, and that's what GT4 in the video does.

Regarding 1.55 - definitely possible. I've done mid 1:55.x more than once with bypass, but could only do 1:57:9x with the cyclone, and I'm leaving a lot on the table even just those things I know of (one thing is knowing, another is ability to execute perfectly)