ZPOST
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   ZPOST > BMW Z4 Technical Talk > Track / Autocross / Dragstrip / Driving Techniques
  TireRack

SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS!
Post Reply
 
Thread Tools Search this Thread
      09-09-2016, 03:59 PM   #1
dc_wright
Captain
dc_wright's Avatar
249
Rep
758
Posts

Drives: 2006 Z43.0si Roadster
Join Date: Oct 2014
Location: Orlando, FL

iTrader: (0)

1st Time Out at Sebring

Got a chance to run a PDX at Sebring last weekend. Video of best lap and a sessions 2 & 3. I skipped the last session as it was in the high 90s temp wise and 100% humidity most of the day. Car handled it fine but the driver was toast.
Since it was first time out I did a lot of experimenting with different lines. I think I could shave another 3-4 seconds pretty easily next time out. Definitely could carry more speed through turns 1 and 17 now that I been through them a few times. Just have to have confidence she'll hold on despite the undulations in the pavement.
Tips/comments are welcome!

Best lap of the day (Session 2)


Session 2


Session 3
__________________
Top Down 365
Appreciate 0
      09-13-2016, 08:48 AM   #2
sleepyro
Private
sleepyro's Avatar
United_States
28
Rep
44
Posts

Drives: 2020 m2c
Join Date: Mar 2012
Location: Miami

iTrader: (0)

nice stuff! I'm going to sebring for my first time next month, this was a nice little primer for lines lol. hopefully it'll be a bit cooler, it's been real hot lately
Appreciate 0
      09-13-2016, 07:50 PM   #3
dc_wright
Captain
dc_wright's Avatar
249
Rep
758
Posts

Drives: 2006 Z43.0si Roadster
Join Date: Oct 2014
Location: Orlando, FL

iTrader: (0)

It was friggin miserable even before the sun came up. Hopefully the new asphalt in Gurney bend will be a bit more worn in for you guys. It was a bit slick still when we were there so you wound up pushing off to the left a bit earlier than would have been best line.
There's two lines through turn 1, either in tight against the wall or 3-4 car widths out to the right. In between there's gulleys and undulations in the pavement that will crack your kidneys.....
Good luck out there!
__________________
Top Down 365
Appreciate 0
      09-15-2016, 03:21 AM   #4
Finnegan
Dog Listener
Finnegan's Avatar
United_States
701
Rep
7,850
Posts

Drives: Z4M/. Z3M, E36/46 M3
Join Date: Oct 2008
Location: Teaching the dog to slalom

iTrader: (22)

Is it really that bumpy out there or is that just the camera mount?
Appreciate 0
      09-16-2016, 10:22 PM   #5
dc_wright
Captain
dc_wright's Avatar
249
Rep
758
Posts

Drives: 2006 Z43.0si Roadster
Join Date: Oct 2014
Location: Orlando, FL

iTrader: (0)

Quote:
Originally Posted by Finnegan View Post
Is it really that bumpy out there or is that just the camera mount?
It's every bit as bumpy as it looks in the videos. If you watch lap 5 in the full session 2 video which is the same lap as the windshield mount camera, you'll see just as much bounce in the GoPro mounted camera and you can see how much I'm getting bounced around.

The roughness is part of getting accustomed to running there. The car's getting bounced around a lot and in some parts of the track (turns 1 and 17 for example) you've only got intermittent grip.

I can imagine when they run the 12 hour race there that the drivers feel pretty beat up at the end of a 3 hour shift.
__________________
Top Down 365
Appreciate 1
Finnegan701.00
      09-17-2016, 01:25 AM   #6
Finnegan
Dog Listener
Finnegan's Avatar
United_States
701
Rep
7,850
Posts

Drives: Z4M/. Z3M, E36/46 M3
Join Date: Oct 2008
Location: Teaching the dog to slalom

iTrader: (22)

Quote:
Originally Posted by dc_wright
Quote:
Originally Posted by Finnegan View Post
Is it really that bumpy out there or is that just the camera mount?
It's every bit as bumpy as it looks in the videos. If you watch lap 5 in the full session 2 video which is the same lap as the windshield mount camera, you'll see just as much bounce in the GoPro mounted camera and you can see how much I'm getting bounced around.

The roughness is part of getting accustomed to running there. The car's getting bounced around a lot and in some parts of the track (turns 1 and 17 for example) you've only got intermittent grip.

I can imagine when they run the 12 hour race there that the drivers feel pretty beat up at the end of a 3 hour shift.
That must make for some interesting skills development. On a smooth track after some time with the bumps you'd probably be faster.
Appreciate 0
      09-21-2016, 08:30 PM   #7
dc_wright
Captain
dc_wright's Avatar
249
Rep
758
Posts

Drives: 2006 Z43.0si Roadster
Join Date: Oct 2014
Location: Orlando, FL

iTrader: (0)

Quote:
Originally Posted by Finnegan View Post
That must make for some interesting skills development. On a smooth track after some time with the bumps you'd probably be faster.
My sphincter muscle was definitely stronger at the end of the day than it was at the beginning......

It was quite a contrast to Daytona which is very smooth by comparison.
__________________
Top Down 365
Appreciate 1
Finnegan701.00
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 07:54 AM.




zpost
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST