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

Fun with Data -- VIR (UPDATED with Better Graphs and GSUM!)

Thread Tools
 
Search this Thread
 
Old 11-16-2006 | 11:24 PM
  #31  
TD in DC's Avatar
TD in DC
Thread Starter
Race Director
 
Joined: Aug 2004
Posts: 10,350
Likes: 2
Default

My friends are such bastards . . .

NO SCOTCH FOR YOU



Now, go buy a DL-1 or tell me why I can't send a 7.9 Meg file to Dave because the message claims it is over the 10 meg limit.
Old 11-16-2006 | 11:25 PM
  #32  
Veloce Raptor's Avatar
Veloce Raptor
Rennlist Member
 
Joined: Aug 2006
Posts: 41,905
Likes: 1,748
From: All Ate Up With Motor
Default

HAHAHAHAHAHA!!!!! This place rocks.
Old 11-16-2006 | 11:58 PM
  #33  
TD in DC's Avatar
TD in DC
Thread Starter
Race Director
 
Joined: Aug 2004
Posts: 10,350
Likes: 2
Default

well, I guess I really am not trail braking in very many places at VIR after all. Here is the plot of lateral vs. longitudinal Gs. In theory, it should be a circle. The shape of the right side is explained by the difficulty of generating positive gs under acceleration in a n/a 944. The shape of the left side shows that I am not doing too much braking and turning at the same time or else it would be more rounded, or so I think.
Attached Images  
Old 11-17-2006 | 12:22 AM
  #34  
}{arlequin's Avatar
}{arlequin
Pro
 
Joined: Jun 2003
Posts: 623
Likes: 0
From: DC/Boston
Default

Originally Posted by TD in DC
[nasally...]
i think this piece comes from his 'green period'....
Old 11-17-2006 | 12:59 AM
  #35  
TD in DC's Avatar
TD in DC
Thread Starter
Race Director
 
Joined: Aug 2004
Posts: 10,350
Likes: 2
Default

Here is the track map. The charts start with Marker 1 (the red arrow) at the left and represent one complete lap.
Attached Images  

Last edited by TD in DC; 11-17-2006 at 01:21 AM.
Old 11-17-2006 | 09:30 AM
  #36  
Veloce Raptor's Avatar
Veloce Raptor
Rennlist Member
 
Joined: Aug 2006
Posts: 41,905
Likes: 1,748
From: All Ate Up With Motor
Default

Originally Posted by }{arlequin
[nasally...]
i think this piece comes from his 'green period'....

ROTFLMMFAO.

Todd, if you ever get the chance, try to hook up throttle position & brake position sensors. They are, IMO, by far THE most valuable inputs for track data you can possibly have. The first time I used data, and looked at all the places where I thought I was flat but wasn't...and where I was braking like I was wearing your skirt was humbling, to say the least.
Old 11-17-2006 | 11:14 AM
  #37  
TD in DC's Avatar
TD in DC
Thread Starter
Race Director
 
Joined: Aug 2004
Posts: 10,350
Likes: 2
Default

Originally Posted by Veloce Raptor
ROTFLMMFAO.

Todd, if you ever get the chance, try to hook up throttle position & brake position sensors. They are, IMO, by far THE most valuable inputs for track data you can possibly have. The first time I used data, and looked at all the places where I thought I was flat but wasn't...and where I was braking like I was wearing your skirt was humbling, to say the least.
Believe it or not, I already own (1) a steering angle sensor; (2) brake pressure sensor; (3) throttle position sensor; (4) clutch in/out sensor; and the Dash2 digital display. I just haven't gotten around to install the yet because, for the most part, I don't need data to tell me where I need to improve. They are immensely fun as toys, though.

OK, here are the g plots for each segment of the track marked above. I wonder how much of the difference over this past weekend was due to brand new RA1s as compared to the scrubbed (and very good) RA1s I used in August and April? Who knows.
Attached Images           
Old 11-17-2006 | 11:19 AM
  #38  
Veloce Raptor's Avatar
Veloce Raptor
Rennlist Member
 
Joined: Aug 2006
Posts: 41,905
Likes: 1,748
From: All Ate Up With Motor
Default

Bleh. Looks like:


Old 11-17-2006 | 11:20 AM
  #39  
TD in DC's Avatar
TD in DC
Thread Starter
Race Director
 
Joined: Aug 2004
Posts: 10,350
Likes: 2
Default

Originally Posted by Veloce Raptor
Bleh. Looks like:


Who told you that you had permission to post pictures of my sensors?

P.S. Please don't turn me into child welfare services . . .
Old 11-17-2006 | 12:56 PM
  #40  
TD in DC's Avatar
TD in DC
Thread Starter
Race Director
 
Joined: Aug 2004
Posts: 10,350
Likes: 2
Default

EUREKA.

I finally get it.

Careful examination for sector 8 -- rollercoaster -- reveals that, in the immortal words of Groucho Marx, "Either this man is dead or my watch has stopped."

See? Data can be useful even to newbies.
Attached Images  
Old 11-17-2006 | 12:59 PM
  #41  
Veloce Raptor's Avatar
Veloce Raptor
Rennlist Member
 
Joined: Aug 2006
Posts: 41,905
Likes: 1,748
From: All Ate Up With Motor
Default

Did you draw that during a billable hour?
Old 11-17-2006 | 01:00 PM
  #42  
TD in DC's Avatar
TD in DC
Thread Starter
Race Director
 
Joined: Aug 2004
Posts: 10,350
Likes: 2
Default

Originally Posted by Veloce Raptor
Did you draw that during a billable hour?
Nope. Lunch. Although I used to be an Architect so it takes me no time at all to punch out beautiful artwork like that.
Old 11-17-2006 | 01:43 PM
  #43  
Rob in VA's Avatar
Rob in VA
Three Wheelin'
 
Joined: May 2006
Posts: 1,475
Likes: 25
From: Richmond, VA
Default

Originally Posted by TD in DC
EUREKA.

I finally get it.

Careful examination for sector 8 -- rollercoaster -- reveals that, in the immortal words of Groucho Marx, "Either this man is dead or my watch has stopped."

See? Data can be useful even to newbies.


hilarious
Old 11-17-2006 | 01:50 PM
  #44  
}{arlequin's Avatar
}{arlequin
Pro
 
Joined: Jun 2003
Posts: 623
Likes: 0
From: DC/Boston
Default

hey rob, your car looks good on a moody drab background... pretty cool. like it better than pics of it on a sunny day!
Old 11-17-2006 | 03:44 PM
  #45  
Veloce Raptor's Avatar
Veloce Raptor
Rennlist Member
 
Joined: Aug 2006
Posts: 41,905
Likes: 1,748
From: All Ate Up With Motor
Default

Originally Posted by TD in DC
Nope. Lunch. Although I used to be an Architect so it takes me no time at all to punch out beautiful artwork like that.

Seeing your evident architectural talent, I'll bet you also designed the Clinton Presidential Library too, right?


Quick Reply: Fun with Data -- VIR (UPDATED with Better Graphs and GSUM!)



All times are GMT -3. The time now is 08:46 AM.