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2013 WKA Manufacturers Cup Class Rules

Last Updated: Wednesday, 20 March 2013 21:59

JUNIOR SPORTSMAN CLASSES

214.22 YAMAHA ROOKIE SPORTSMAN (FINAL 1 & FINAL 2)

DRIVER REQ: Age 7 through 10.
ENGINE: Yamaha, Only heads with OEM casting "Yamaha" and cylinders with Y3 or Y4 and 787 are legal
EXHAUST: RLV YBX muffler. (See Section 554.1 and Figure 554.1) 
CARBURETOR: Walbro WA55B with WA55B manifold (See Sections 601.6 and 601.7).
FUEL: Spec Fuel.
MINIMUM WEIGHT: 225 lbs. for karts with wheelbase between 35" and 39.75" (100 cm). 215 lbs. for karts with 39.75" wheelbase and up. (See 611.14a for kart measurements and 611.14b for bodywork measurements). 
SPEC TIRE: Bridgestone YLC – 10 x 4.5 - 5 front and rear.

OTHER: (1) Gear Ratio 5.30 Min., No Max. (2) Drivers who have competed in the Cadet, Yamaha, or Komet Piston Valve Sportsman classes at any WKA Sanctioned National or Divisional event are not eligible to race in Yamaha Rookie Sportsman. (3) Past year champion must move out of the class. (4) Class runs both race days for one championship. (5) Class runs on same tires both days.


214.1 CADET SPORTSMAN (FINAL 1 & FINAL 2):
DRIVER REQ: Age 8 through 12.
ENGINE: Comer K-80.
FUEL: Spec Fuel.
MINIMUM WEIGHT: 235 lbs.
KART: The Cadet Kart is the only legal kart in this class. Overall maximum length 72", Wheelbase 35" minimum. and 41" maximum. (See Figure 201 for kart measurements and 211 for bodywork measurements). 
SPEC TIRE: Bridgestone YLC – 10 x 4.5 - 5 front and rear.
OTHER: (1) Gear Ratio 5.30 Min., NO Max. (2) Races two days for a single championship. (Class runs on same tires both days.)


214.2 YAMAHA SPORTSMAN (FINAL 1 & FINAL 2):
DRIVER REQ: Age 8 through 12.
ENGINE: Yamaha, Only heads with OEM casting "Yamaha" and cylinders with Y3 or Y4 and 787 are legal
EXHAUST: RLV SSX-V #7548. (See Section 554.3 and Figure 554.3) 
CARBURETOR: Walbro WA55B with WA55B manifold (See Sections 601.6 and 601.7).
FUEL: Spec Fuel.
KART: Cadet or standard kart chassis allowed.
MINIMUM WEIGHTS: 255 lbs.
SPEC TIRE: Bridgestone YLC – 10 x 4.5 - 5 Front and rear.
OTHER: (1) Gear Ratio 5.30 Min., NO Max. (2) NO AXLE CLUTCHES. (3) Class runs on same tires both days. (4) To achieve parity between chassis types WKA reserves the right to adjust weight differential at any time between.


214.3 KOMET SPORTSMAN 1 & 2:
DRIVER REQ: Age 8 through 12.
ENGINE: Komet Piston Valve 
FUEL: Spec Fuel.
KART: Cadet or standard kart chassis allowed.
MINIMUM WEIGHT: 255 lbs.
EXHAUST: Komet Piston Valve Sportsman spec header & pipe (See Section 603.12 and Fig. 603.12). HPV 1 Pipe through 2011.
CARBURETOR: Walbro WA55B or HPV1
SPEC TIRE: Bridgestone YLC – 10 x 4.5 - 5 Front and rear.
OTHER: (1) Gear Ratio 5.30 Min., NO Max. (2) Class runs on same tires both days. (3) To achieve parity between chassis types WKA reserves the right to adjust weight differential at any time between.  (4) Class runs both days for separate championships.


JUNIOR CLASSES

214.4 YAMAHA JUNIOR (FINAL 1 AND FINAL 2):

DRIVER REQ: Age 12 through 15
ENGINE (S): Yamaha, only heads with OEM casting "Yamaha" and cylinders with Y3 or Y4 and 787 are legal.
FUEL: Spec Fuel. 
MINIMUM WEIGHTS:320 lbs.
EXHAUST: RLV SSX-V #7548. (See Section 554.3 and Fig. 554.3) 
SPEC TIRES: Bridgestone YLC – 10 x 4.50-5 front, 11 x 6.00-5 rear
OTHER: (1) NO AXLE CLUTCHES


214.5 KOMET JUNIOR (FINAL 1 AND FINAL 2):
DRIVER REQ: Age 12 through 15. 
ENGINE: Komet Piston Valve
FUEL: Spec Fuel.
MINIMUM WEIGHTS: 320 lbs.
EXHAUST: Komet Piston Valve Junior spec header and pipe (See Section 603.12 and Figure. 603.12) HPV 2 Pipe through 2011.
SPEC TIRES: Bridgestone YLC – 10 x 4.50 - 5 front, 11 x 6.00 - 5 rear


SENIOR CLASSES

214.9 YAMAHA SENIOR (FINAL 1 AND FINAL 2):

DRIVER REQ: Age 15 and older. 
ENGINE: Yamaha, Only heads with OEM casting "Yamaha" and cylinders with Y3 or Y4 and 787 are legal
FUEL: Spec Fuel. 
MINIMUM WEIGHTS: 345 lbs.
EXHAUST: SR-Y Pipe and RLV 9110 Header - 1.750" connector tube- 9.5" from piston to end of connector tube. See 554.7 in 2013 WKA Tech Manual.
SPEC TIRE: Bridgestone YLC – 10 x 4.50 - 5 front, 11x7.10 - 5 rear.
OTHER: NO AXLE CLUTCHES


214.11 KOMET PRO (FINAL 1 AND FINAL 2):
DRIVER REQ: Age 15 and older. 
ENGINE: Komet Piston Valve 
FUEL: Spec Fuel. 
MINIMUM WEIGHTS: 345 lbs.
EXHAUST: Komet Piston Valve spec header & pipe (See Section 603.12 and Fig. 603.12 in 2013 WKA Tech Manual.) HPV 4 Pipe is no longer legal.
SPEC TIRE: Bridgestone YLC – 10 x 4.50 - 5 front, 11x7.10 - 5 rear
 


214.20 PARILLA SENIOR (FINAL 1 AND FINAL 2):
DRIVER REQ: Age 15 and older. 
ENGINE: Parilla Leopard & Parilla X30
MINIMUM WEIGHTS: Leopard: 365 lbs;  X30: 375 lbs.
FUEL: Spec Fuel
EXHAUST PIPE/SILENCER: Must be stock pipe as supplied by manufacturer for that specific engine. The minimum combined length of the header and connector pipe must be at least 15 3/4" as measured from the back side of the header flange at the cylinder, around the right side of the header, connector, and pipe to the first weld at the end of the divergent cone. See Section 610.4.2.
CARBURETOR: Must be stock carburetor as supplied by.
SPEC TIRE: Bridgestone YLB – 10 x 4.50 - 5 front, 11 x 7.10 - 5 rear
AIRBOX: Required. See Section 551 in 2013 WKA Tech Manual.
OTHER: In the event that the engine cannot be started on the grid with the onboard starter, an auxiliary starter may be used. In any case, the onboard starter is subject to post race tech inspection to ensure that all components are present and correctly installed. 


214.17 TAG SENIOR (FINAL 1 AND FINAL 2):
DRIVER REQ: Age 15 and older. 
ENGINES & MINIMUM WEIGHTS: Cheetah SQ 125 – 350 lbs., Easykart IAME & BMB – 350 lbs., Motori Seven – 380 lbs, Parilla Leopard – 365 lbs., Parilla X-30 – 375 lbs., Rotax FR 125 – 365 lbs., Sonik TX 125 (125cc) – 385 lbs., Sonik VX 125 (118 cc) – 365 lbs.,, Vortex ROK TT – 385, PRD Fire Ball (2005 & 2008) 350 lbs. 
TIRES: Bridgestone YLB – 10 x 4.50 - 5 front, 11 x 7.10 - 5 rear
FUEL: Spec Fuel.
EXHAUST PIPE/SILENCER: Must be stock pipe as supplied by manufacturer for that specific engine. On the Sonik TX and Comer engines, the minimum combined length of the header and connector pipe must be at least 17" as measured from the back side of the header flange at the cylinder, around the right side of the header, connector, and pipe to the first weld at the end of the divergent cone. On the Parilla Leopard and ROK TT engines, the minimum combined length of the header and connector pipe must be at least 15 3/4". See Section 610.4.2.
CARBURETOR: Must be stock carburetor as supplied by manufacturer for that specific engine.
SPEC TIRE: Bridgestone YLB – 10 x 4.50-5 front, 11 x 7.10-5 rear
AIRBOX: Required. See Section 551.
OTHER: (1) In the event that the engine cannot be started on the grid with the onboard starter, an auxiliary starter may be used. In any case, the onboard starter is subject to post race tech inspection to ensure that all components are present and correctly installed. (2) #1 runs Saturday, #2 runs Sunday, two separate championship classes.


∆ 214.19 TAG MASTERS (FINAL 1 & FINAL 2):
DRIVER REQ: Age 35 and older. 
ENGINES & MINIMUM WEIGHTS: Cheetah SQ 125 – 370 lbs., Easykart – 370 lbs., Motori Seven – 400 lbs., Parilla Leopard – 385 lbs., Parilla X-30 - 395 lbs., Rotax FR 125 – 385 lbs., Sonik TX 125 (125cc) – 405 lbs., Sonik VX 125 (118 cc) – 385 lbs., Vortex ROK TT – 405, PRD Fire Ball (2005 & 2007) 370 lbs. (Other engines and specifications TBA)
FUEL: Spec Fuel.
EXHAUST PIPE/SILENCER: Must be stock pipe as supplied by manufacturer for that specific engine. On the Sonik TX and Comer engines, the minimum combined length of the header and connector pipe must be at least 17" as measured from the back side of the header flange at the cylinder, around the right side of the header, connector, and pipe to the first weld at the end of the divergent cone. On Parilla Leopard and ROK TT engines, the minimum combined length of the header and connector pipe must be at least 15 3/4". See Section 610.4.2.
CARBURETOR: Must be stock carburetor as supplied by manufacturer for that specific engine.
SPEC TIRE: Bridgestone YLB– 10 x 4.50 - 5 front, 11 x 7.10 - 5 rear
AIRBOX: Required. See Section 551.
OTHER: In the event that the engine cannot be started on the grid with the onboard starter, an auxiliary starter may be used. In any case, the onboard starter is subject to post race tech inspection to ensure that all components are present and correctly installed.


KID KART / LOCAL OPTION

214.16 KID KARTS (LOCAL OPTION):

DRIVER REQ: Age 5 through 7
ENGINE: Comer C-50 or Comer C-51: (See Section 621)
FUEL: Spec Fuel.
MINIMUM WEIGHT: 150 lbs.
TIRES: Open compound, front & rear size 10 x 4:50 or 4:60 – 5, Max rear circumference 33.75"
GEAR RATIO: 10/89
OTHER: See Section 900 for chassis and bodywork specifications

 

∆214.8 YAMAHA MASTERS (LOCAL OPTION):
DRIVER REQ: Age 35 and older. 
ENGINE: Yamaha, Only heads with OEM casting "Yamaha" and cylinders with Y3 or Y4 and 787 are legal
FUEL: Spec Fuel. 
MINIMUM WEIGHT: 360 lbs.
EXHAUST: RLV SSX-V #7548 (See Section 554.3 and Figure. 554.3) 
SPEC TIRE: TBA – 10 x 4.50 - 5 front, 11x7.10 - 5 rear.
OTHER: NO AXLE CLUTCHES