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      02-13-2015, 10:00 AM   #9
dc_wright
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Drives: 2006 Z43.0si Roadster
Join Date: Oct 2014
Location: Orlando, FL

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Quote:
Originally Posted by intoflatlines View Post
Hi Jim. I do experience understeer on turn-in at faster sections. You can see/hear the understeer at the end of the slalom/beginning of the left hander for example. I do have a small bit of oversteer at exit at times, probably due to sloppy stomping on the gas though? Here's the helmet cam of the same run as the slalom clip.

The body roll on the stock suspension tends to put a high loading on the outside front tire. A stiffer front sway will help the under steer a little bit as it will reduce the loading on the outside tire. It won't be dramatic, but it will help. Installing some Koni or Bilstein struts/shocks will give increased damping and will reduce transient body roll also. Outside that, it's tuning the driver.

That being said, you can make any car under steer if you're hard on the brakes and turning sharply at the same time. A little bit of braking to load the front end to help with initial turn in is good, but then you have to be off the brakes and try to roll through the turn so both ends of the car can share the load. It takes some experimenting (and some cone killing) but once you get it down you'll see your times drop. A more advanced technique is to use throttle cut over steer to get the car to start rotating before you get to the turn so there's less turning to do in the turn. This takes a LOT of practice, and you'll have some awesome spins during the learning process, but once you get it down you should see a dramatic drop in your times.
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