CotA Lap Times

[HDA]

I guess we should start one here, shouldn't we?

 

Date: 1/13/2013

Lap time: 2:40

Car: S2000

Estimated total vehicle weight with driver: 3000

Estimated wheel horsepower: 210

Top Speed: 130mph

Tire size and model: 255/40R17 NT01 and old 235/40/17 Advan 032

Estimated ambient temperature: 55 and windy

Note: Front tires 12 years old (not R compound) - Puffo Air Intake - Test pipe + OEM Exhaust - Koni + Ground Controls - Carbotech 10

 

A lot of understeer due to bad front tires. Last session of the day, I still have to upload the previous sessions so this is my prov. best lap. Pretty consistent 2.41s 2.42s

 

[himself]

Might be an idea to combine the two threads. Or not.

 

Date: 1/13/2013

Lap time: 2:33.x [2.32 with s/f at turn 11]

Car: 996 GT3

Estimated total vehicle weight with driver: 3400

Crank horsepower: 380 [factory]

Top Speed: Fast

Tire size and model: Pirelli scrubs

Estimated ambient temperature: 55 and windy

Essentially stock 996 GT3 except for new springs.

 

Video to come.

[Alan]

Date: 1/13/2013

Lap time: 2:43.675

Car: 2003 MINI Cooper S

Estimated total vehicle weight with driver: 2700

Estimated wheel horsepower: 180

Top Speed: 123.36 mph

Tire size and model: 205/50/15 R888

Estimated ambient temperature: 55 and windy

Lots of mods and most of the flammable bits removed.

 

It's lap 6 which starts @ 13:50

 

http://youtu.be/u7AnW_7gLCM

[bigjae1976]

Date: 1/12/2013

Lap time: 2:43.39

Car: 2011 BMW M3

Estimated total vehicle weight with driver: 3880

Estimated wheel horsepower: 350

Top Speed: 137mph

Tire size and model: 275/35R18 Nitto NT01

Estimated ambient temperature: 60 and damp

Mods: Dinan Stage II suspension, GC camber plates, Stoptech BBK, Dinan exhuast and pulleys.

Notes: I have an EASY couple of seconds in the braking zones for T1/11/12. I know I can pickup some time between T9-11...need to stay in the gas. Need to play with the esses a little bit.

 

http://www.youtube.com/watch?v=5LMSLBYrIAU

[himself]

Interesting data bits [mph] - Forgive my math if I messed up.

LAP = AVG MPH

2:20 = 87.4 mph

2:22 = 86.2 mph

2:25 = 84.4 mph

2:30 = 81.6 mph

2:35 = 79.0 mph

2:40 = 76.5 mph

 

2:40 lap is about 88% of a 2:20 [or 1.14 the other way]

2:30 lap is about 93% of 2:20 [or 1.07 the other way]

You could read this as a car that runs a 2:40 is around 10% of a car runs 2:20. But the cost differential is probably way over 10%.

 

Even though many people only got 4 sessions, almost all of them are still within 90% of their best lap time. Most of the advanced folks are closer to 95-97% of their best. That is, 3% of ~2:30 lap [AKA already got 97% of the track] is almost 5 seconds (or a 2:25 best time). 5% [95% of it] would be almost 8 seconds (around 2:22). 10% would be 15 seconds! [Miatas running close to 2:40 might only see 2:37-2:38, so they are already within 98%!]

 

-td

[robertcope]

[Miatas running close to 2:40 might only see 2:37-2:38, so they are already within 98%!]

 

Very interesting stuff. Were there any Miatas in the 2:40s? I talked with a national champ SM driver about my video and Traqmate data, and he said that they had guessed they'd be in the 2:43-2:45 range based on watching the Ferrari Challenge, so my 2:44 was not a surprise to him.

 

Personally, I think we'll be under 2:40 with a few more laps.

 

I was a bit surprised to see something like a 2:22 lap from what seemed like an "okay driven" ZR1. HP matters at this track... obviously!

 

robert

[Dave]

I'm trying to understand this. A 2:20 is your "best lap" benchmark right? 90% of that is a 2:40. I'll be interested to see what the milestones end up being for this track. Mine is to beat @@bigjae1976 's 2:43. Ha ha!!

[himself]

No way my car will make 2:20. Maybe a 2:25. :) I'd be happy with 2:25 in an old beater 996.

 

I would say that most Red drivers should take their fast lap of the weekend and adjust it by .95 or .97 [1.07 | 1.14] and that's what they'll eventually see. If you ran a 2:40, that would be something like a 2:32-2:35.

 

-td

[Dave]

Ah ok, I misunderstood what you were saying then. Mine was a 2:46 before my session died with a dead Vette. I still think a 2:40 is a good goal for me to try and obtain.

[HDA]

I think a 2.35 is well achievable in my S2000 setup, I'd just need more practice.

 

I saw the video of the ZR1 doing 2.20....

[himself]

Indeed. Power really makes a huge difference on this track! Over 600 HP will do wonders for lap times...

 

I saw the video of the ZR1 doing 2.20....

[bigjae1976]

I'm trying to understand this. A 2:20 is your "best lap" benchmark right? 90% of that is a 2:40. I'll be interested to see what the milestones end up being for this track. Mine is to beat @@bigjae1976 's 2:43. Ha ha!!

 

Haha. Not if I block you and drive a 2:44 the entire session! I've got a spot reserved for Vettel in the unemployment line after I break his 1:39!

[himself]

Haha. Not if I block you and drive a 2:44 the entire session! I've got a spot reserved for Vettel in the unemployment line after I break his 1:39 - 1:36.5 in qualifying!

Fixed.

[Dave]

Deleted

[Alan]

Very interesting stuff. Were there any Miatas in the 2:40s?

 

Brian ran a 2:48 Saturday afternoon in his SM. So I'd bet a nickle Brett was a couple seconds better than that Sunday in his SM on a better track.

Brian's lap:

http://www.youtube.com/watch?feature=player_embedded&v=y-WuMjzJ7V4

[bigjae1976]

Fixed.

 

So I've gotta find 1:07 now? No problem. Just give me another weekend there.

[himself]

Finally got some video up. 2:33.x with actual start finish. 2:32.x using the green flag at turn 11. Ideal is 2:30.9x based on this data. I think 2:27 is doable with some additional laps.

 

http://www.youtube.com/watch?v=JIOYPXYPyac

[jetkins]

Date: 1/13/2013

Lap time: 2:49.68 (Virtual best: 2:48.48)

Car: 2009 MX-5

Estimated total vehicle weight with driver: 2720

Estimated crank horsepower: maybe 175

Top Speed: 118mph

Tire size and model: 205/45R17 Ecsta LE

Estimated ambient temperature: 55 and windy

RX-8 sway bars; Carbotech XP10 pads, ATE Blue fluid; Cold air intake; Hypertech reflash; Roadstersport Race rear muffler.

 

http://youtu.be/DFeXlulXDKU

[aveday]

As a reference, the Pirelli 911 GT3 cup support race on F1 weekend had the winner pulling the fastest race lap of 2:13.19

 

Source:

http://www.wrightmotorsports.com/wright-motorsports-wins-us-grand-prix-pirelli-gt3-cup/

 

Of course that's a cup car... on slicks, but it sounded like the Pirelli's weren't the usual tire for those guys.

[Quikag]

Date: 1/13/2013

Lap time: 2:22

Car: Corvette ZR1

Estimated total vehicle weight with driver: 3600

Estimated crank horsepower: 638

Top Speed: 164mph

Tire size and model: 3065 front and 3171 rear Michelin Slicks S9H compound on 18" wheels

Estimated ambient temperature: 55 and windy

Mods: Motul 600 brake fluid

 

[Max]

Date: 1/13/2013

Lap time: 2:22

 

 

Thanks for sharing the vid and awesome lap!

 

Jeez- in 8 laps you would lap me- if I kept it together that long ;0

[metrocube]

I was expecting to see much higher top speeds from the horsepower cars, but it seems as if everyone was trying to keep a huge reserve. And that's 100% okay because I can relate to not wanting to be the person who blew through Turn 12 :-)

[Quikag]

I was expecting to see much higher top speeds from the horsepower cars, but it seems as if everyone was trying to keep a huge reserve. And that's 100% okay because I can relate to not wanting to be the person who blew through Turn 12 :-)

 

I did the pump pedal and open/close the bleed valve on my Motul flush. Long story short, I think a touch of air got in the lines as I was having to doublepump the pedal at the end of the two straights and even coming from turn 10 to 11. So, discretion was the better part of valor in this case and I was definitely leaving a bit on the table. I think if the stars aligned and I didn't care about possibly overcooking turn 12, I could have probably hit 170mph. However, since I needed to drive this car back to DFW, I took it pretty easy and left margin on the table.

 

To this day, no one has ever paid me at the end of a track day or offered me a racing job. :) :)

 

Really interested in seeing some strong lap times from the MVP guys this weekend. I tried to bribe my way into the event, to no avail.

[pcasso87]

Got a chance to run this weekend , man is this track fun. Video and pictures coming soon in my build thread, only slight teasers today

 

Date: 02/02/2013

Best Lap Time : 2:40.8

Car: 2013 Scion FR-S

Estimated total vehicle weight with driver: 2800

WHP: 184

Top Speed: 117mph ( I have a huge ass wing)

Tire size and model: 245/40/17 Toyo R1R (Such a greasy tire, i should have stepped up and ordered R comps for the weekend.)

Estimated ambient temperature: 76 Sunny

Mods: Boltons, Roll bar, slight weight reduction, coilovers, suspension braces, Front AP BBK, AP C300 Pads Front, Project MU Club Racer Pads Rear.

 

[drewtk]

Date: 02/03/2013

Best Lap Time : 2:34

Car: 2007 911 GT3

Estimated total vehicle weight with driver: 3200

Top Speed: ~145

Tire size and model: Michelin Pilot Super Sports in 19's (235 front and 305 rear)

Estimated ambient temperature: 70's and sunny

Mods: PFC08 brake pads.

 

I know I'm leaving a lot of time out there, particularly through the esses (turns 3-8). The track is FANTASTIC.