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


Go Back   ZPOST > BMW Z4 Roadster and Coupe > Regional Forums > USA - California
  TireRack

SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS!
Post Reply
 
Thread Tools Search this Thread
      04-11-2013, 01:56 PM   #1
gferil
Captain
gferil's Avatar
29
Rep
740
Posts

Drives: 06 Z4MC
Join Date: Dec 2010
Location: San Francisco, CA

iTrader: (6)

Finally some video of my best lap at Thunderhill from March 2nd

So I finally got around to uploading my best lap from that day with NCRC.

Very much open to feedback since I still have so much to learn. That day was my 4th overall trackday, and my first time at Thill. It was taken from the last session and, for the most part, traffic was pretty good so I was able to get some clean runs in without having to point the faster people by and without having to wait to get pointed by.

Since it was my first time there I wanted to focus more on the lines, and getting the feel for the speed at that track, so I know I was going fairly "slow" respectively (seems like I pulled a 2:20 on that lap, could have been better but I had to slow down at the start of the back straight to wait to get pointed by from another car so I lost some speed).

Appreciate 0
      04-11-2013, 02:18 PM   #2
Tonybest
Enrollment Officer
Tonybest's Avatar
Canada
103
Rep
5,015
Posts

Drives: 997.2 Porsche C4S
Join Date: Jul 2007
Location: Montreal, Qc.

iTrader: (2)

good for you.. Keep at it. It would be nice to have the footage from that helicopter that's hanging with you (right under the map overlay)
Appreciate 0
      04-11-2013, 02:53 PM   #3
Finnegan
Dog Listener
Finnegan's Avatar
United_States
675
Rep
7,837
Posts

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

iTrader: (22)

Nice work! Lines look pretty good!

Turn by turn commentary below; remember I'm still learning too, and some of what I'm sharing applies to my own driving. (I spent some time with a Spec E30 record holder out of the track at Thill--so I "know" more than I can "do".)

1, 2, out of 2 into 3 are great lines. Note: 2 has multiple lines that can be run (double apex, winding it real tight towards the infield aka the "Miata line", especially if the Spec Miata guys have left a lot of nice Rcomp rubber on the tarmac for us). The "wind it in as you go" line you're using is a perfectly good approach too. Line out of 2 into 3 is very nice.

5 - 7 look good.

8, could use some work there, so could I! It's worth a huge amount of time since the exit is uphill onto a long straight, so exit speed (or lack thereof) really adds up on this one. My friend Brian has this corner pretty well dialed in. We can't hit it quite as fast (he has a front and rear wing), but his turn in point and transition (off/on throttle) are good.

9 - 13 all look pretty good.

14 needs a later apex. You really want to turn in at or just before that last small white hash mark on the left rather than at the last braking marker. The later apex sets the 14 -15 complex and allows one to have a better line into 15. That's key because it means you can get on the throttle earlier and get greater exit speed onto a very long straight where speed is multiplied. Here are a few laps from last summer--the last one in particular one has a nice late apex on 14. These are not meant to be exemplary laps (I have plenty to work on and I know it), but they do give a good idea of what I'm talking about with 14-15 and the later apex.

Other than 8 and 14-15, I don't see a lot from a line perspective that needs work. Lines are good, and you're figuring out how to be faster out of corners. You just need more seat-time my friend! This is great progress, keep up the good work!
Appreciate 0
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 01:29 PM.




zpost
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, 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