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m4a1mustang · 02-03-2010, 11:13 PM

http://img401.imageshack.us/img401/3...ville20mar.jpg

Here's actually a good shot showing the groove mostly built up on a concrete track... you can even see the darker areas where it's built up more at the seams... and of course the marbles up out of the groove.

In most of the NASCAR races it takes roughly the first 100 miles of the race for the track to fully rubber in... from there it's pretty stable assuming atmospheric conditions remain the same (they never do.)

02-03-2010, 11:13 PM	#642 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	http://img401.imageshack.us/img401/3...ville20mar.jpg Here's actually a good shot showing the groove mostly built up on a concrete track... you can even see the darker areas where it's built up more at the seams... and of course the marbles up out of the groove. In most of the NASCAR races it takes roughly the first 100 miles of the race for the track to fully rubber in... from there it's pretty stable assuming atmospheric conditions remain the same (they never do.) __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!