Notices
Racing & Drivers Education Forum
Sponsored by:
Sponsored by:

PCA and lap records

Thread Tools
 
Search this Thread
 
Old 06-07-2010, 08:19 PM
  #46  
38D
Nordschleife Master
 
38D's Avatar
 
Join Date: Jun 2002
Location: About to pass you...
Posts: 6,640
Received 797 Likes on 404 Posts
Default

Originally Posted by analogmike
We have been impounded after qualifying as much as after races. The scrutineers are smart and don't want us to think we can run without ballast for qualifying.
Mike is 100% correct on both accounts
Old 06-07-2010, 08:46 PM
  #47  
FredC
Drifting
 
FredC's Avatar
 
Join Date: Feb 2006
Location: Connecticut
Posts: 3,052
Received 68 Likes on 45 Posts
Default

Originally Posted by DrJupeman
Particularly in a series such as PCA where each practice is really qualifying for the next session. It isn't really "practice 1" as much as qualifying for qualifying for qualifying for qualifying...
+1. It is the reason for which I admire the guys who show up cold, with no test and tune or DE day prior to an event... Did that once... it did not work so well for me... We start looking at data from P1 onwards on Fridays... trying to find time with the set-up we settled on the day before.... Call me nerdy, but I aim to finish as high as possible every practice session, knowing full well the scrutes could send to tech or scales.
Old 06-07-2010, 08:54 PM
  #48  
Circuit Motorsports
Addict
Rennlist Member

Rennlist Small
Business Sponsor

 
Circuit Motorsports's Avatar
 
Join Date: Oct 2007
Location: Durham, NC
Posts: 3,183
Received 10 Likes on 7 Posts
Default

Originally Posted by DrJupeman
Particularly in a series such as PCA where each practice is really qualifying for the next session. It isn't really "practice 1" as much as qualifying for qualifying for qualifying for qualifying...
Then it's not really a practice session.
Old 06-07-2010, 09:03 PM
  #49  
Gary R.
Rennlist Member
 
Gary R.'s Avatar
 
Join Date: Dec 2004
Location: Valencia, Spain
Posts: 15,583
Received 271 Likes on 165 Posts
Default

Originally Posted by DrJupeman
Particularly in a series such as PCA where each practice is really qualifying for the next session. It isn't really "practice 1" as much as qualifying for qualifying for qualifying for qualifying...
At the Glen I was waiting for them to call "We are taking all your laps from the last 5 years and your best lap will be your qualifier"...
Old 06-07-2010, 09:04 PM
  #50  
Sean F
NASA Racer
Rennlist Member
 
Sean F's Avatar
 
Join Date: Jul 2005
Location: Westchester, NY
Posts: 4,778
Received 33 Likes on 19 Posts
Default

Originally Posted by Gary R.
At the Glen I was waiting for them to call "We are taking all your laps from the last 5 years and your best lap will be your qualifier"...
Old 06-07-2010, 11:32 PM
  #51  
Brian P
Rennlist Member
 
Brian P's Avatar
 
Join Date: Mar 2003
Posts: 1,900
Likes: 0
Received 29 Likes on 11 Posts
Default

Originally Posted by cgomez
Yep. Big kudos for Brian P. Rennpoints is a great resource, not only to keep track of records but also to know your competition ahead of a race.

One thing I have failed to understand how it works is the predictive laptime. How does it work (when a racer has not been to that race)? Seems that it compares race laps (so doesnt count the racer best lap vs the benchmark opponent) vs. lap records (that do consider fastest lap including all sessions).
It's a straightforward formula. It figures that your lap times relative to your peers stays relatively constant. So, if you generally drive 1% faster than a fellow driver in your class, it then sees what that driver does at the target track and then figures you'll be 1% faster.

There's a bit more logic in there to make sure that it's picking a good peer for comparison purposes, but that's the crux of the formula.
Old 06-08-2010, 03:15 AM
  #52  
cgomez
Rennlist Member
 
cgomez's Avatar
 
Join Date: Nov 2003
Location: NYC Area
Posts: 1,244
Received 21 Likes on 8 Posts
Default

Originally Posted by FredC
+1. It is the reason for which I admire the guys who show up cold, with no test and tune or DE day prior to an event... Did that once... it did not work so well for me... We start looking at data from P1 onwards on Fridays... trying to find time with the set-up we settled on the day before.... Call me nerdy, but I aim to finish as high as possible every practice session, knowing full well the scrutes could send to tech or scales.
Agreed. Same strategy here. Practice 3 is specially important as you want to make sure that any car starting in front of you in Qualifying (green from pit entry) is really faster than you and will not ruin your Quali laps.

Most likely if you look at the top finisher for competitive classes (5 or more racers) it is usually the case that fastest lap time was done in Qualifying, while several of the mid pack racers probably get their fatest laps in the race when they get to draft, follow someone with a better line or be pushed harder to catch or not be cached by someone.
Old 06-08-2010, 08:11 AM
  #53  
bobt993
Rennlist Member
 
bobt993's Avatar
 
Join Date: Aug 2005
Location: Philly Burbs
Posts: 3,077
Received 3 Likes on 3 Posts
Default

Lap records should be race laps only. If not, you may as well open up lap records to DE runs too. Qualifying is about getting a solid lap sometimes your best, but often the first clear track run you get and then you go in. (unless you have unlimited funds to get another set of fast tires).
Old 06-08-2010, 10:55 PM
  #54  
DrJupeman
Rennlist Member
 
DrJupeman's Avatar
 
Join Date: Sep 2003
Location: New Jersey
Posts: 9,170
Received 9 Likes on 6 Posts
Default

Originally Posted by FredC
+1. It is the reason for which I admire the guys who show up cold, with no test and tune or DE day prior to an event... Did that once... it did not work so well for me... We start looking at data from P1 onwards on Fridays... trying to find time with the set-up we settled on the day before.... Call me nerdy, but I aim to finish as high as possible every practice session, knowing full well the scrutes could send to tech or scales.
I appreciate your admiration.



Quick Reply: PCA and lap records



All times are GMT -3. The time now is 09:23 AM.