Last autocross of 2013
Last autocross of 2013 On Sunday I ran the last points event of 2013. Things went very well. It was my 3rd best finish of the season and I took my class by 6 seconds. I had a very good day and Bill (2nd in XP) had a very bad day. He was having some major handling problems, which seemed strange to me considering how well he ran just a couple of weeks ago.
I tried some very different tire pressures today which finally found some balance in the car. I ran 28 in the rear which was the lowest pressure I was able to find on different forums for the NT01. I upped the front tires to 40 psi which is about 10 psi over their peak performance I have seen in the past. The idea was to overinflate the fronts to kill some grip and induce some understeer. It worked! The car was more neutral than I have ever seen it and I had a blast driving today. I could push very hard and place the car into a line at will even though it was sliding in the cold temps. Lots of tire spin, sliding, and controllable drifts....what fun! I was having so much fun that I left some time on the track....but did I mention I was having a blast?
I have been playing with the new Go Pro editor so it took some time to edit the video. Here is my best run of the day. I was recording in 720p but switched to 1080 to see if there was much difference in quality. The throttle modulation you hear is me trying to "pedal" the car to find traction as the rears were spinning a bunch. At the 40 sec mark I was hard on the limiter as I entered the slalom. The vibration you see at that point under braking is axle hop as the rears lock slightly turning into the slalom. Lots of rear brake bias yet still very controllable.
Well the site won't take my video from youtube so just see "run 3 1080" on my main page: http://www.youtube.com/user/stlmarshall/videos
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I tried some very different tire pressures today which finally found some balance in the car. I ran 28 in the rear which was the lowest pressure I was able to find on different forums for the NT01. I upped the front tires to 40 psi which is about 10 psi over their peak performance I have seen in the past. The idea was to overinflate the fronts to kill some grip and induce some understeer. It worked! The car was more neutral than I have ever seen it and I had a blast driving today. I could push very hard and place the car into a line at will even though it was sliding in the cold temps. Lots of tire spin, sliding, and controllable drifts....what fun! I was having so much fun that I left some time on the track....but did I mention I was having a blast?
I have been playing with the new Go Pro editor so it took some time to edit the video. Here is my best run of the day. I was recording in 720p but switched to 1080 to see if there was much difference in quality. The throttle modulation you hear is me trying to "pedal" the car to find traction as the rears were spinning a bunch. At the 40 sec mark I was hard on the limiter as I entered the slalom. The vibration you see at that point under braking is axle hop as the rears lock slightly turning into the slalom. Lots of rear brake bias yet still very controllable.
Well the site won't take my video from youtube so just see "run 3 1080" on my main page: http://www.youtube.com/user/stlmarshall/videos
.
Last edited by mmarshall; Oct 7, 2013 at 09:06 AM.
Awesome what are your alignment specs? Are you running thick sway bars and stiff springs and soft shocks and/or struts? Just wondering what people are doing. Theres a few local cars that autox with me that have some odd/unique setups such as not running any sway bars at all.
Last edited by Snkebait95; Oct 8, 2013 at 07:51 AM.
Yes it is a Factory Five Daytona replica. It looks different without the standard blue paint with white stripes.
I run 500# Front / 350# rear springs on Konis red coilovers. I use a 7/8" front swaybar. 400 hp LS1, tko 500, ford 8.8 with 3.55 gears. Car weighs 2260 lbs with a 48 front 52 rear weight bias.
I run 500# Front / 350# rear springs on Konis red coilovers. I use a 7/8" front swaybar. 400 hp LS1, tko 500, ford 8.8 with 3.55 gears. Car weighs 2260 lbs with a 48 front 52 rear weight bias.
