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Last Post 09 May 2006 09:45 PM by  slacker7
Newbie Needs Help!! May comp @ CAFB
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joey-slipher
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07 May 2006 10:32 PM

    Hi,

    My name is Joey Slipher, my wife and I both are interested in driving @ the may solo event at Columbus Air Force Base. Neither of us has ever driven @ an scca event. We both have about 60 hours proffesional driving training and thats it! Is that enough to particapate in one of your events? We have a 99 corvette with several upgrades including: brakes, tires, exaust, & suspension. What classes do we qualify to run in & can we both drive the same car. Also as I understand I will have to fill out the base form and send it in and I think I will need an open face helmet. What about memberships and anything else that a newbie might need to know or bring? please help!

    Thanks, Joey

    GroovinPickle
    Advanced Member
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    08 May 2006 01:07 PM
    No experience necessary, although it helps.

    Depending on the extent of your upgrades you will probably be in either ASP or SM2. The PAX (handicap) of those two classes is so close that I don't think anybody will split hairs either way. Our region is unique in that we have a "street tire" class, so you won't have to run against the folks on R compound tires. There is no problem with you sharing a car - just fill out the registration form appropriately.

    As you said, you need to send in the base access form (MBAF). This is the biggie. If you don't get it in on time, you won't be allowed on the base.

    We do have loaner helmets available, but most regulars bring their own. You don't need to be an SCCA member to run, but there is a discount for members. Additionally, if you join the SCCA at the event (we'll have forms to do so), you get that day's event fee waived.
    CDS
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    08 May 2006 06:23 PM
    Joey, with 60 hours of professional driver training you will probably have more experience than most of the people at the event. [:D] Just show up, ask questions and have a good time!
    joey-slipher
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    08 May 2006 10:50 PM

    Ok guys not to sound stupid. But could you explain the classes ASP, SM2, ect....(how it works). Oh and how does the PAX or handicap work.

    Thanks, Joey

    GroovinPickle
    Advanced Member
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    Posts:796


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    09 May 2006 12:04 AM
    The classing is done based on SCCA rules. The major classes are stock, street touring, street prepared, street modified, prepared, and modified. To compete within one of these classes you must fit within the class rules. Each class lays out which modfications are allowed. The general rule is that if the rulebook doesn't say that you can do something, then you can't.

    Within each of those classes you have subclasses that are based on each car's potential within its class. If you drive a Honda S2000 in stock class, you find yourself in A Stock ("AS"). If you drive a Mini Cooper in stock class, you're in H Stock ("HS"). Cars of similar performance capabilities are grouped together in subclasses.

    The PAX system provides a theoretical handicap for all classes. To calculate PAX time, multiply raw time by the appropriate class PAX. A Stock, with a PAX of 0.831, is significantly faster than H Stock, which has a PAX of .780. So if an H Stock car has a raw time of 60 seconds, an A Stock car must have a raw time of about 56 seconds in order to "win."

    Somebody else can probably explain it more eloquently, but that gives you a basic outline of how it works. One of the really fun things about our region is that you run against a variety of different cars, and we use PAX to equalize them. If you look through some of the past results on msscca.org you can get a better idea of how this works.
    wffurr
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    09 May 2006 09:51 AM
    This is an excellent site for understanding the classifications:

    http://moutons.org/sccasolo/

    He links the official SCCA rulebook with the classification guidelines and has an online list of car classes by make.

    Unless you've done something more to your engine than bolt-ons, you'll most likely be in ASP. Maybe STU if you'd prefer that.
    GroovinPickle
    Advanced Member
    Advanced Member
    Posts:796


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    09 May 2006 10:01 AM
    wffurr wrote:
    Unless you've done something more to your engine than bolt-ons, you'll most likely be in ASP. Maybe STU if you'd prefer that.

    STU-eligible cars have a minimum of four seats. STS2 allows two-seaters, but limits displacement to 1900cc.
    slacker7
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    09 May 2006 09:45 PM
    Welcome, hope to see you in CAFB.

    The PAX index is pretty much short for professional autocrossers' index. Let's say you are running huge rims on your vette an you end up in Street Modified 2 (SM2). If you go to this link http://www.scca-chicago.com/solo/in...p2006.html

    you will see that you have a PAX index of 0.854 in that class. Let's say that you are running at an event and you see an A modified car which has a PAX of 1. Both of you have best runs of 100seconds, however since you have PAX index of 0.854, your indexed score will be 100seconds x 0.854 = 85.4 seconds. The A modified car has a PAX index of 1 so the indexed score for the A modified car will be 100seconds.. therefore.. you beat the A modified car when the scores are indexed!

    Since no two cars are the same and there are different classes, the PAX index will roughly let you know how the driver did and not the car.

    As far as classes go, for the most part, classes are categorized into

    Stock - Classes are separated by letters of the alphabet ie.
    Super stock (SS), A stock (AS), B stock (BS), C stock (CS) ......, H Stock (HS)

    Street touring - No "race" tyres allowed ie you must run tyres with treadwear of at least 140. There are a few street touring classes. Street Touring Sport? (STS), Street Touring Extreme (STX), Street Touring Ultra (STU)

    Street Prepared - A Street Prepared (ASP), BSP, CSP..............., FSP

    Street modified - ...
    Prepared - ....
    Modified - ....




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