I think this might be the same pavement. I did notice that the start area, was no longer black after many spinning starts, it was more brown in color, but did not appear to get any slipperier. We were told that it was durable, competition asphalt. Bill Schmidt (I was the starter when I worked heat #4)
>>> [EMAIL PROTECTED] 06/13/06 12:31 AM >>> John, If they used the same " easy on tires" race track paving mix material as they did at AMP here in AZ (probably the same SCCA race track consultant), it has an abrupt (but only medium grip) breakaway characteristic and if a lot of cars run on it, it generates black dust that is slippery. Does that sound like the "new" Topeka that you ran on? I'm afraid that there may not be any mechanical nor chemical reason for it to ever get grippier with time. In fact, it may get more slippery since it may polish up. A lot of cars running on it also may generate ruts and certainly dust. I hope that isn't the case for all our sakes that run there, but I've heard that some race track asphalt surfaces like this are grippiest when first built and then it it downhill after that. If there are sharp rocks or rough pebbles in a pavement that become exposed as the top surface gets worn away, it might get better. However it is my guess that Topeka is a consistent mix all the way through of sand,tar, and polymers. (old ground up street rubber is a polymer) The best one can hope for is that it is clean when one runs. This is only conjecture. I have no proof of that this actually is the composition at Topeka. This is just what I suscept from knowing how AMP was built, running on AMP for a year before it was closed, and talking with Howard Duncan about Topeka's new paving plans a few years ago. Chuck >From: John Whitling <[EMAIL PROTECTED]> >Reply-To: [email protected] >To: [email protected] >Subject: Re: [F500] Solo 2 Nationals? >Date: Mon, 12 Jun 2006 21:09:47 -0400 > >So what was the weather like out there Jan? Was it sunny or cloudy? > >Thanks >John Whitling > >Jan Schmidt wrote: > >>I ran a local event yesterday at HPT in Topeka. This is the new solo 2 >>location for Nationals. Kudos for Gary Kramar for winning both days. His >>Dad, Ed also did well and watch out for the young Macabee, he kicked my >>butt on a car that is new to him. I was not disappointed with my car, or >>my driving, just very disappointed in the new surface. Apparently, they >>are going to set up Nationals with an East and a west course, because >>there is only a North entrance. We were running 60 second courses using >>the entire pad. My guess is that Nationals will be two 35 second >>courses? The new pad has had 3 autocrosses on in and it is still slick >>as snot and has some weird milling in some areas, like they were trying >>to do the California rain grooves. Anyways, I hope they get this mess >>figured out, soon. I will take the rough as hell Forbes field over the >>smooth HPT surface anyday. The temps were in the high 80's both days and >>plenty of sunshine. Maybe it will just take about 3 years of mother >>nature to let the asphalt lose its "greeness." >>Bill Schmidt 88 Red Devil Kawi >> >>_______________________________________________ >>F500 mailing list - [email protected] >>To unsubscribe or change options please visit: >>http://f500.org/mailman/listinfo/f500 >>*** Please, DO NOT send unsubscribe requests to the mailing list! *** >> >> >> >_______________________________________________ >F500 mailing list - [email protected] >To unsubscribe or change options please visit: >http://f500.org/mailman/listinfo/f500 >*** Please, DO NOT send unsubscribe requests to the mailing list! *** _______________________________________________ F500 mailing list - [email protected] To unsubscribe or change options please visit: http://f500.org/mailman/listinfo/f500 *** Please, DO NOT send unsubscribe requests to the mailing list! *** _______________________________________________ F500 mailing list - [email protected] To unsubscribe or change options please visit: http://f500.org/mailman/listinfo/f500 *** Please, DO NOT send unsubscribe requests to the mailing list! ***
