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      05-04-2010, 10:34 PM   #1
runnerx
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Z4M roady @ thunderhill (video)

Alright... I guess I will be the first one since no one has posted any roady track video.

NCRC event at Thunderhill. I just mounted Dunlop Direzza Sport Z1 Star Spec 245/275 on the stock rims not long ago. the car understeered a bit due to incorrect tire pressure. A little bit more PSI tweaking should help rotate the car better.

Comments and tips are welcomed...
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Last edited by runnerx; 01-06-2011 at 01:43 PM. Reason: spelling
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      05-04-2010, 11:32 PM   #2
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video not working
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      05-05-2010, 01:32 AM   #3
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You aren't first lol.

http://www.zpost.com/forums/showthread.php?t=381719
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      05-05-2010, 11:33 AM   #4
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The video works for me...

He posted his video in a different section, so I guess I am still the first one here hahaha....
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      05-05-2010, 01:21 PM   #5
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Man it's been 2 years since the last time I was at T-Hill. If it weren't for the usual heat and humidity (and the 8+ hour drive) I'd put T-Hill near the top of the list of favorite tracks.

Not sure if you want any comments, but here's a little tip I picked up from a friend. That last turn onto the front straight? There's no "straight" section between the two apexes.
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      05-05-2010, 01:31 PM   #6
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Quote:
Originally Posted by The HACK View Post
Man it's been 2 years since the last time I was at T-Hill. If it weren't for the usual heat and humidity (and the 8+ hour drive) I'd put T-Hill near the top of the list of favorite tracks.

Not sure if you want any comments, but here's a little tip I picked up from a friend. That last turn onto the front straight? There's no "straight" section between the two apexes.
Thanks..

I did have a tiny bit of straight there.. next time (6/25) I will try out your suggestion
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      05-05-2010, 07:08 PM   #7
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nice driving man very smooth
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      05-06-2010, 11:17 AM   #8
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Quote:
Originally Posted by Shorestyle031 View Post
nice driving man very smooth
thx for the compliment!
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      05-06-2010, 01:48 PM   #9
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Quote:
Originally Posted by runnerx View Post
Thanks..

I did have a tiny bit of straight there.. next time (6/25) I will try out your suggestion
In order to make the last "turn" into a turn-in, pause and let the car track out to the outside, hold the arc for the 2nd apex, you need to make the first apex super late. By being on the first geometrical apex you won't be able to make a single arc through the entire turn.

Again, to do so you must give up a little bit of entry speed but the exit speed and ultimately terminal speed gained down the front straight will more than make up for the split second lost in the braking zone to the first half of the turn.

A friend of mine put it this way regarding T-Hill...A 1 mph difference at the exit to the straight will equal a 5 mph difference at the end of the straight.
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      05-07-2010, 11:07 AM   #10
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Quote:
Originally Posted by The HACK View Post
In order to make the last "turn" into a turn-in, pause and let the car track out to the outside, hold the arc for the 2nd apex, you need to make the first apex super late. By being on the first geometrical apex you won't be able to make a single arc through the entire turn.

Again, to do so you must give up a little bit of entry speed but the exit speed and ultimately terminal speed gained down the front straight will more than make up for the split second lost in the braking zone to the first half of the turn.

A friend of mine put it this way regarding T-Hill...A 1 mph difference at the exit to the straight will equal a 5 mph difference at the end of the straight.
very good information.. I will definitely try this next time.
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