STU autocross class -- good fit for a street-tired Evo?
Feb 17, 2004, 08:51 PM
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STU autocross class -- good fit for a street-tired Evo?
From http://www.sccaforums.com/ubb/ultim...pic/22/751.html :
The Solo Events Board met at the SCCA National Convention in Kansas City February 6th through 8th. Attending were SEB Chairman Colan Arnold, board members Chris Dorsey, Mari Clements, Ron Bauer, Andy Hollis, Marcus Merideth, Mark Sipe, and Mark Sirota. Also attending were Tasha Goodale, Howard Duncan and Doug Gill of the National Staff, and BOD liaison Bob Introne.
During this meeting, the SEB discussed and approved the addition of two supplemental classes to National Tour events; STS2 and STU. These classes reflect what the SEB envisions to be the continued growth of the Street Touring category, and are being evaluated in conjunction with evaluation of the feasibility of combining several less-subscribed classes and of restructuring some less-subscribed preparation categories.
Reflecting the success of the ST concept both nationally and regionally, the two supplemental classes were developed as the next logical steps in the progression of this category. Variants of one or both of these classes are already being offered in several regions across the country.
STS2 will follow the STS rule set, but the eligible cars will be restricted to two-seaters with engine displacements of 1.8 liters or less. This class will provide a home for a number of popular vehicles, including the Honda CRX and del Sol, Mazda RX7 (non-turbo, '79-'92) and Miata ('90-'97), Toyota MR2 ('85-'89), as well as other similar vehicles. STS category rules 14.1 to 14.10 apply. Further, as in STS, only original equipment viscous limited slip differentials are legal in STS-2. Excluded vehicles include Lotus (all), Mazda Miata (99+), and Toyota MR2 ('91-'95 and '00+).
STU will follow the STX rule set, but will raise the displacement limit for otherwise STX-legal vehicles to 3.1 liters for forced induction and to unlimited displacement for natural aspiration. To accommodate the greater power of these vehicles, restrictions on wheel width are lifted and the maximum tire width will be increased to 275 for front or rear wheel drive vehicles (but will remain at 245 for AWD vehicles). Other than these limited exceptions, the STX rule set as described in 14.11 applies. This class extends the Street Touring concept to cars including the Audi S4, BMW M3 (E36), Chevrolet Camaro, Dodge Neon SRT-4, Ford Mustang, Mazda RX-8, Mitsubishi Lancer Evo. 8, Pontiac Firebird, Pontiac GTO, Subaru WRX STi, Volvo S60 R, and Toyota Supra. Excluded vehicles include the E46 M3 and the E39 M5.
In conjunction with the planned evolution of this category and of the sport as a whole, these two supplemental classes will not be considered for full national status until 2007. One or both classes could then potentially be recommended for full national status provided that rules stability is attained, member participation is strong, and the classes continue to reflect the needs of the current enthusiast market.
Please feel free to forward this information.
-Chris Dorsey
RMDiv. SEB
The Solo Events Board met at the SCCA National Convention in Kansas City February 6th through 8th. Attending were SEB Chairman Colan Arnold, board members Chris Dorsey, Mari Clements, Ron Bauer, Andy Hollis, Marcus Merideth, Mark Sipe, and Mark Sirota. Also attending were Tasha Goodale, Howard Duncan and Doug Gill of the National Staff, and BOD liaison Bob Introne.
During this meeting, the SEB discussed and approved the addition of two supplemental classes to National Tour events; STS2 and STU. These classes reflect what the SEB envisions to be the continued growth of the Street Touring category, and are being evaluated in conjunction with evaluation of the feasibility of combining several less-subscribed classes and of restructuring some less-subscribed preparation categories.
Reflecting the success of the ST concept both nationally and regionally, the two supplemental classes were developed as the next logical steps in the progression of this category. Variants of one or both of these classes are already being offered in several regions across the country.
STS2 will follow the STS rule set, but the eligible cars will be restricted to two-seaters with engine displacements of 1.8 liters or less. This class will provide a home for a number of popular vehicles, including the Honda CRX and del Sol, Mazda RX7 (non-turbo, '79-'92) and Miata ('90-'97), Toyota MR2 ('85-'89), as well as other similar vehicles. STS category rules 14.1 to 14.10 apply. Further, as in STS, only original equipment viscous limited slip differentials are legal in STS-2. Excluded vehicles include Lotus (all), Mazda Miata (99+), and Toyota MR2 ('91-'95 and '00+).
STU will follow the STX rule set, but will raise the displacement limit for otherwise STX-legal vehicles to 3.1 liters for forced induction and to unlimited displacement for natural aspiration. To accommodate the greater power of these vehicles, restrictions on wheel width are lifted and the maximum tire width will be increased to 275 for front or rear wheel drive vehicles (but will remain at 245 for AWD vehicles). Other than these limited exceptions, the STX rule set as described in 14.11 applies. This class extends the Street Touring concept to cars including the Audi S4, BMW M3 (E36), Chevrolet Camaro, Dodge Neon SRT-4, Ford Mustang, Mazda RX-8, Mitsubishi Lancer Evo. 8, Pontiac Firebird, Pontiac GTO, Subaru WRX STi, Volvo S60 R, and Toyota Supra. Excluded vehicles include the E46 M3 and the E39 M5.
In conjunction with the planned evolution of this category and of the sport as a whole, these two supplemental classes will not be considered for full national status until 2007. One or both classes could then potentially be recommended for full national status provided that rules stability is attained, member participation is strong, and the classes continue to reflect the needs of the current enthusiast market.
Please feel free to forward this information.
-Chris Dorsey
RMDiv. SEB
Feb 17, 2004, 09:32 PM
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Here in Houston we already have a STU class that is very popular. Though it extends further than the STX rules, that is pretty much the spirit that it is run in down here.
The class here is pretty much "anything goes" as long as you have street tires on.
I think it would be a good catch all class for a lot of cars (especially with boost controllers).
The class here is pretty much "anything goes" as long as you have street tires on.
I think it would be a good catch all class for a lot of cars (especially with boost controllers).
Feb 18, 2004, 12:51 AM
#5
I still think the original STS class is biased towards the Impreza. It has more power than most U-3 engines, and yet is one of the few cars to be allowed limited slip. I was hoping they would revise current STS class to either allow 2WD cars to add LSD, or to exclude cars such as the Impreza, or place them in STS2.
Oh well, at least this gives a decent street tire class to the Evo and STI, which have been excluded from so many classes until now.
Oh well, at least this gives a decent street tire class to the Evo and STI, which have been excluded from so many classes until now.
Feb 18, 2004, 05:49 AM
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Originally posted by urbanknight
I still think the original STS class is biased towards the Impreza. It has more power than most U-3 engines, and yet is one of the few cars to be allowed limited slip. I was hoping they would revise current STS class to either allow 2WD cars to add LSD, or to exclude cars such as the Impreza, or place them in STS2.
Oh well, at least this gives a decent street tire class to the Evo and STI, which have been excluded from so many classes until now.
I still think the original STS class is biased towards the Impreza. It has more power than most U-3 engines, and yet is one of the few cars to be allowed limited slip. I was hoping they would revise current STS class to either allow 2WD cars to add LSD, or to exclude cars such as the Impreza, or place them in STS2.
Oh well, at least this gives a decent street tire class to the Evo and STI, which have been excluded from so many classes until now.
About the tires size for AWD vehicles, that's one of the biggest complaints that SP people have against AWD cars... that they can use larger tires for more traction. Since they're still street tires in STU, removing a perceived fear from the 2WD crowd will help grow the class. And really... 245s are cheaper.
You're not going to be able to fit that much a wider tire anyways.
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