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Class Rules

 

 

 

Text Box:  2010 - Driver Safety Rules - All Classes 
All drivers will wear their helmets, arm restraints, seat belts and driving / fire suit any time kart is in motion.
Full face helmets are recommended.  Motocross style must use eye goggles for eye protection.
360 degree neck supports are required
Full length (top & bottom) driving suit is required.  No shorts or short sleeve shirts.  Full fire suit is HIGHLY RECOMMENDED.
Full finger gloves are recommended.
Arm restraints are required.  Must be adjusted to keep arms/hands inside of kart.  Do not route arm restraints through the steering wheel.  Arm restraints are to be fastened to the central seat belt latch.  No other location is acceptable.  In case the driver needs to be removed from the kart quickly, one latch and their free from the kart.
Seat belts must be bolted to frame or rollcage, to at least 3-points.  Always cinch belts tight.  Do not adjust loosely just for comfort.
**Please go over these important rules with your driver.  Line up official will check for all of the above in the staging lane.  If a driver is asked to pull out of line up for any safety reason, Please abide.  We are only looking out for the safety of the drivers and do not want any injuries.**

Text Box: 2010 Kart Motor and Weight Rules
 Young Guns Beginner (Gas) 250lb. / 4-7 Years of Age 
The only motors allowed in this class are 126cc or smaller OHV/OHC single Cylinder and 148cc and smaller L-head type single cylinder. Ex. Briggs, Tecumseh, Robin, Honda.
May also run Restricted Stock Briggs & Stratton Animal.  Must run  3-hole .220” Purple Horstman restrictor plate.  Will be teched with .223" no/go. Restrictor must be mounted between Carburetor and Manifold.  Restrictor may not be altered in any way.  Must use gasket between restrictor and manifold.
Drum Style clutches only. 
The only Modifications / Alterations allowed are:
          a.  May disconnect or remove governor assembly.
          b.  May use fuel pump.
          c.  May use any air cleaner assembly.
          d.  May use adjustable jet on carburetor.
          e.  May use any exhaust header.  Must have flared or washer end if exhaust protrudes outside of frame.
Young Guns Advanced (Gas) 250lbs. / 5-8 Years of Age
The only motors allowed in this class are 126cc or smaller OHV/OHC single Cylinder and 148cc and smaller L-head type single cylinder. Ex. Briggs, Tecumseh, Robin, Honda.
May also run Restricted Stock Briggs & Stratton Animal.  Must run  3-hole .220” Purple Horstman restrictor plate.  Will be teched with .223" no/go. Restrictor must be mounted between Carburetor and Manifold.  Restrictor may not be altered in any way.  Must use gasket between restrictor and manifold.
Drum Style clutches only.
The only Modifications / Alterations allowed are:
          a.  May disconnect or remove governor assembly.
          b.  May use fuel pump.
          c.  May use any air cleaner assembly.
          d.  May use adjustable jet on carburetor.
          e.  May use any exhaust header.  Must have flared or washer end if exhaust protrudes outside of frame.
Briggs Intek / Pure Stock (Gas) 290lbs.  / 8-13 Years of Age
206 Briggs & Stratton Intek engine only
This is a stock engine class.  No aftermarket motor parts allowed except where noted.  No porting, milling, grinding, etc allowed, not allowed to remove the EPA ramp in the intake port.  Must use Plastic cam for that make of engine.  Stock timing with factory timing key required.  Cylinder will be checked with parallel plate for piston pop-up.  Any part of this engine can be compared to a known stock part.
Carburetor spacer can not be any larger than .635" ID.
May upgrade to B&S #555626 connecting rod.
May upgrade valve springs to B&S #26826.
May remove lash caps.
May disconnect or remove governor assembly.
May use adapter on carburetor for aftermarket air cleaner.
Only B&S #30,32,34,and 36 carburetors can be used.
May use any exhaust header.  Must have flared or washer end if exhaust protrudes outside of frame.
Drum style clutches only.
No Wings.
**TECH PROCEDURES & GUIDE LINES FOR ANIMAL CLASSES**
Cylinder blocks: (max. .030 bore) (piston pop up +.005" MAX). 
Converted Inteks must run Animal head
Piston: stock Briggs pistons installed per. Manufacturers specs. (Arrow to mag. side, no machining)
Rod: Any stock length rod can be used.
Crankshaft: Stock crank. (Stock dimensions)
Flywheel: Stock Jr. Racecar or Briggs PVL. (Stock magneto)
Cylinder head: Combustion chamber floor depth, no less than .319!
Combustion chamber squish band areas around plug and bottom portion of chamber no less than .011! (Will be measured with a quality depth gauge and will have 0 tolerances.)
Valves:  Intake OD min. & max. 1.055 - 1.065, Exhaust OD min. & max. 935 - .945  Minimum Valve Length = 3.250"  (1 angle, no polishing, stock keeper grove location)
Valve springs: Stock valve springs. (Or stock replacement to exact stock specs)
Camshafts: will be profiled out using a degree wheel with IKF profile. (Maximum cam lifts .257") (Gross valve lift will be teched @ valve spring retainer .255" maximum lift with no lash) ( Factory core camshafts only)
 Lifters: stock replacement only.
 Push Rods: Stock length. (5.638-5.656 minimum and maximum length)
 Rocker Arms: Stock replacement only. (No alterations of any kind, comparison to a known stock part will be used)
Valve Cover: Stock valve cover with working stock baffle. No tapping or welding.
Carburetor: Items that drop from the bottom of carburetor with bowl off are not tech items: 
Examples: main jet, pilot jet, float, needle and seat, emulsion tube. 
Intake manifold: The only alteration allowed is slotting of holes for proper alignment.
Restrictor plate: Plates may not be altered in any way.  No beveling of holes, either side.  Plates will be checked with no-go gauge.  Plates must be installed with tab on the right side.
  
Fuel pump pulse line: (top oil fill on side cover is the only allowed place)
Crank case ventilation: (from valve cover only) 
Starter: Any type starter allowed.
Notes: These engine tech specs can be changed at any time per tracks updates.
All engine parts, except listed allowed changeable parts can be teched to a known stock Briggs Animal part.
Notes: This is a stock engine class and if anything is altered or replaced other than what is listed in this engine spec sheet it does not fit the mandated requirements.  All Animal engines will be teched per IKF go/no-go gauges.
Red Plate Animal (Gas or Alcohol) 285lbs. / 6-9 Years of Age
1.       This is a Restricted Stock Briggs & Stratton Animal class.  The only approved motor is the Briggs Animal OHV.
2.     Must run  3-hole .279” Red Horstman restrictor plate.  Will be teched with .281" no/go. Restrictor must be mounted between Carburetor and Manifold.  Restrictor may not be altered in any way.  Must use gasket between restrictor and manifold. 
3.     Drum Style clutches only.
Gold Plate Animal (Gas or Alcohol) 300lbs. / 8-11 Years of Age
1.       This is a Restricted Stock Briggs & Stratton Animal class.  The only approved motor is the Briggs Animal OHV. 
2.       Must run  3-hole .312” Gold Horstman restrictor plate.  Will be teched with .314" no/go.  Restrictor must be mounted between Carburetor and Manifold.  Restrictor may not be altered in any way.  Must use gasket between restrictor and manifold. 
3.       May use any clutch (disc or drum)
Stock Animal (Gas or Alcohol) - 330lbs. / 10-16 Years of Age
1.       This is a stock Briggs & Stratton Animal Class.   The only approved motor is the Briggs Animal OHV.
2.   May use any clutch (disc or drum)
Modified Champ - 340lb. / 12 Years of Age Minimum
**Driver's must have (1) year experience in Stock Animal class and track approval before they will be allowed to run this class** 
4 cycle 5.0 - 6.5 hp only
Approved motor types: B&S Animal/Intek, Tecumseh, Honda.  Commercial type side shaft engines.
Must use production OEM block
Must use stock diameter size valves
Piston and rod are non-tech
Crankshaft must be OEM for that model engine. (stock stroke)
Camshaft max lift .310" lift @ pushrod for OHV and .420" lift for L-heads @ valves.
Head must be OEM head. 
Grinding, porting, decking, and polishing allowed.
Must use Billet Flywheel or Briggs PVL
Gas or Alcohol.  No additives.
Any carb.  Will be teched with .900" no/go gauge.  Stock appearing animal carb ok.
May use any exhaust header.  Must have flared or washer end if exhaust protrudes outside frame.
Any clutch allowed.
Adult Flat Kart - Click Here
 

Text Box: 2010 - General Kart Rules for all Classes 
Frames  
     1.     Frames and cages must be constructed of metal.  No aluminum or conduit tubing. 
2.     All karts will be outfitted with Rollcage.  Rollcage must be a minimum four-point either bolted or welded to frame. 
3.      Minimum of 3" head clearance to roll cage. 
4.      Minimum four-point seat belts bolted to frame or roll cage. 
5.     Front and rear bumpers are required.  Bumpers must be of tubular design.  No flat style allowed. Maximum width of rear bumper may be no wider than tire sidewall to sidewall width. Maximum width of front bumper may be no wider than frame rails.  Lowest rail of Bumpers may be no higher than 4" from ground.  
6.     Nerf bars are required.  Nerf bars may not protrude past tire sidewall. 
7.     All karts must have adequate protection over driver’s feet.  Full bodied hood, recommended. 
Exhaust / Header Pipe 
1.      May use any type or style of open header.  
2.      If exhaust end protrudes outside of kart frame or roll cage, must have flared or washer style end. 
Tires & Wheels  
1.      Any 5" or 6" diameter steel or aluminum wheels. 
2.      Any compound slick or treaded tire.
Brakes 
1.      Mechanical or Hydraulic disc is recommended.  No scrubber style brakes.  Must stop kart in a safe distance. 
Fuel
1.      Gasoline -  No additives
2.      Alcohol allowed in ALL Animal  and Modified classes. (excluding Young Guns Advanced)  No additives.
Numbers
1.      Kart number must be displayed on both sides, front, and grandstand side of roll cage. 
2.      Numbers must be in contrasting color, so scorers can identify kart number. 
Engine Kill Switches
1.      Must have roll cage mounted on/off switch.  Must be mounted in right rear area on roll cage with the ON position pointing forward or up.
2.      Driver must be able to reach a second kill switch while seated and buckled in place. 
Weights 
1.      All weights added to kart, must be bolted to point of attachment with adequate fastener. 
2.      All weights must be painted white, so they can be seen if they fall from kart onto track during race. 
3.      All weights must have kart number on them for identification.