03-23-2008, 05:52 AM
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Admin, Founder, & PCA Cayman Chair
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Join Date: Aug 2005
Location: Kansas
Posts: 16,026
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Quote:
Originally Posted by gmsracing
I had a good time too. It was a good venue and much less chaotic than the NASA events I have attended in the past. Plenty of track time and a good bunch of folks to drive with.
Here's me after passing a Corvette and an Elise. Those Elises are fast! I was following one, and they can just turn in when ever they want to on a dime.
I was impressed with the car, but I could definately see the areas that I need to improve--PSS9's, better pads, and better brake fluid. The stock sport seats are great and I didn't slide around at all. Didn't experience much inside rear wheels spin, so I'll probably spend my money on PSS9's first instead of the Quaife.
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Don't let Thunderhill fool you on the need for LSD / Quaife unit. Thunderhill has what 1 tight turn (turn 11 according to their own track guide), I would be surprised if you spun your tires much on this track at all since it really is not a highly technical track and is mostly devoid of any sharp changes in direction causing you to have to slow down and set up and power out of a tight corner. The stock brake fluid is also pretty darn good stuff, although you may have some air in your lines. If you are going to always drive Thunderhill then yeah maybe LSD is not for you, but on a technical track you will be lost and frustrated without it.
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LSD - Limited Slip Differential
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A limited slip differential (LSD) is a modified or derived type of differential gear arrangement that allows for some difference in rotational velocity of the output shafts, but does not allow the difference in speed to increase beyond a preset amount. In an automobile, such limited slip differentials are sometimes used in place of a standard differential, where they convey certain dynamic advantages, at the expense of greater complexity.
The main advantage of a limited slip differential is found by considering the case of a standard (or "open") differential where one wheel has no contact with the ground at all. In such a case, the contacting wheel will remain stationary, and the non-contacting wheel will rotate freely– the torque transmitted will be equal at both wheels, but will not exceed the threshold of torque needed to move the vehicle, thus the vehicle will remain stationary. In everyday use on typical roads, such a situation is very unlikely, and so a normal differential suffices. For more demanding use however, such as driving off-road, or for high performance vehicles, such a state of affairs is undesirable, and the LSD can be employed to deal with it. By limiting the velocity difference between a pair of driven wheels, useful torque can be transmitted as long as there is some friction available on at least one of the wheels.
To see the installation of a LSD style unit Click Here -> Article Forthcoming Stay Tuned |
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