WONDERLAND SPEEDWAY

MICRO SPRINT RULE BOOK

2008 SEASON

 

 

ENGINE SPECIFICATIONS

Motor

440cc snowmobile motor, fan or air cooled only. Motor must have original casting number. Cylinders may be bored to .060” over stock bore, stock stroke only. Engines will be randomly checked for the permitted specifications.  If the engine is found to be illegal, points for the season accumulated to that point will be lost by the competitor.  Also, a 2 week suspension from competition will also be enforced.  Technical inspection of the engine will follow the following guidelines:

The technical inspector will request 1 mechanic which will perform the dismantling of the engine.  ONLY this person will be allowed in the inspection area and no others and must complete the engine tear down by themselves.  The engine components will be measured by the technical inspector and the engine components checked for casting numbers.  When the technical director is satisfied with the inspection the Micro sprint will be released back to the competitor.  Any failure to comply with these outlined rules will result in immediate disqualification and the outlined punishment enforced

Carburetors

No fuel injection, turbos or super chargers. Round slide, flat slide, butterfly type carburetors only. Twin carbs, 38 mm maximum, Single carb, 44 mm. maximum. No turbos.

 Mufflers

Mufflers / Silencers are mandatory, no open headers a decibel rating will be determined.

 

CHASSIS SPECIFICATONS

Frame

Frame rails must be constructed of, Minimum 1-1/8" O.D. x .083" wall 4130 cond N chromoly or Minimum 1-1/8" O.D. x .095" wall DOM or seamless steel tubing.

 Suspension

Suspension is not allowed. Suspension includes the use of shocks, springs, torsion bars, coil overs, compressible /expandable devices that exceed 1/2" travel. If a front axle is used, it must be a one-piece axle mounted directly to the frame. Designs not covered by the above must be authorized by the club prior to racing.

 

Side Bars

All sidebars must be constructed of at least 3/4" x .083 wall steel tubing. Right Side - at least one side bar mounted 18-24" above the bottom frame rail. Left Side - 2 parallel sidebars - top bar to be mounted 18-24" above the bottom frame rail and the lower bar mounted 6"-8" (inside dimension) below the top bar. An additional bar will be mounted vertically between the upper side bar and the top roll cage bar. Refer to Drawing 1 for additional dimensions. All sidebars are to be constructed and mounted to provide maximum driver protection, all horizontal bars must be welded,  and vertical bar may be welded, coupled, coupled and pinned.

DRAWING 1

Frame

Steering

Steering wheels can be mounted solid or quick release. The quick release must be snug and tight,    no loose fitting steering wheels will be allowed. All nuts / bolts used for steering must be drilled and pinned.

Clutch

Engine mounted clutches only. No direct drives allowed.

Chain Guards

Chain guards must be 1/8" steel plate with a maximum space of ½” between the edge of the guard and the crankcase of the engine. Chain guard must be fastened at the back of the roll cage and run over the top of the chain no more than 3" above the chain, the guard must curve around the clutch 90 degrees. A side plate is mandatory on the driver’s side of the guard. The side plate must cover the clutch-retaining bolt.


 Brakes

Hydraulic brakes only. Steel braided brake lines only. All nuts / bolts used for brakes must be drilled and pinned.

Wheels and Hubs

5" or 6" wheels only. No bead locking devices, including screws allowed. No wheel discs or mud caps allowed. Clip-on wheel weights shall not be allowed. Rear axle must have clips or bolts on both ends to retain hubs.

Weight

The micro sprint shall weigh no less than 425 lbs. driver included at the end of the feature race. The top four cars may be weighed after the feature race. Any removable weight must be painted white with the cars number painted on it in black. Minimum of two 3/8" bolts must be used to firmly attach weight to chassis (not the belly pan).Loss of weight on the track will result in the black flag for the night as a safety violation.  If the weight falls off in the A feature, you will also get a 1 week suspension. If the car is found to be illegal, it shall be immediately disqualified and the next finishing car will be called to the scales.

Bumpers

Front and rear bumpers are mandatory. Bumpers shall be constructed of steel with a minimum 3/4" O.D. x .065" wall round tubing. The front bumpers shall extend beyond all body parts but cannot extend beyond the inside dimensions of the front tires. The front bumper must extend at least 16" forward of the front axle. The front bumper must be made with at least two horizontal bars, no less than 4" apart and no greater than 7" apart and fastened to the frame. The top horizontal bar should fasten on each side. The bottom horizontal bar can be shorter and fasten in the center portion of the frame. The two horizontal bars will be connected by at least two vertical bars made of the same material. The bottom horizontal bar of the front bumper must be at least 2" off the ground and no greater than 5" off the ground. The front bumper shall adequately protect bodywork from cutting another competitor's tire, or the tech. inspectors will force you to change it. Rear bumper shall fasten on the back of the roll cage on both sides and connect at one point at rear. The rear bumper must extend a minimum of 24" behind the rear axle. The centre vertical bar can curve under the tail section to a maximum of 12" and be connected to each lower horizontal bar. Rear bumper must be made of two horizontal bars on each side of the car; the horizontal bar can have vertical bars throughout for support and to prevent tail section damage. The horizontal bars must be at least 4" apart and no greater than 7" apart. The bottom horizontal bar must be at least 4" off of the ground and no greater than 7" off the ground.


 

Nerf Bars

Nerf bars are mandatory on both sides of the car. Nerf bars shall be constructed of mild steel tubing with a minimum of 3/4" O.D. x .065 wall. The bottom bar shall mount straight out from the lower portion of the chassis in front of the tires at the rear of nerf bar at least 6" and no further than the outside edges of the tire. The top bar must be at least 6" apart from the bottom bar and should run parallel the length of the cockpit. Top and bottom bars shall have at least one vertical brace of the same material. Nerf bars must not protrude past the outside of the rear tires.  No open end nerf bars are allowed.

Bellypan

All cars shall have a metal belly pan under the frame of the car from the front of the frame to at least the front of the driver’s seat. Bellypan must be made out of aluminum (.050" min.), steel (.040"min.).

Front Leg Protection

Loop of 3/4" O.D. x .083" wall ( minimum ) seamless round tubing, must extend forward from the roll cage to a point at least as far forward as the drivers heels and be attached to front of chassis.

 ROLL CAGE AND COCKPIT SPECIFICATIONS

The roll cage must have a minimum height of 38" and a maximum height of 6” above the driver’s head (see drawing 1).The top of the driver’s helmet must be completely below the bottom of the horizontal roll cage bars after being wrapped with safety approved roll cage padding. A 4" distance between the top of the driver's helmet and the bottom of the horizontal bars is highly recommended. The roll cage must be made of , minimum 1-1/8"x.083" wall 4130 cond N chromoly or 1-1/8"x.095" wall seamless DOM tubing. The roll cage must be welded to the chassis in front of and behind the driver in 4 locations. The top of the roll cage shall be gusseted in all four corners. No sharp edges shall be left anywhere on the roll cage. The roll cage shall be equipped with an inverted V-type or an X-type brace behind the driver's head. The roll cage shall consist of continuous hoops front and rear, connected by horizontal tubing to join the two hoops. The driver must be able to climb through the hole in the top of the roll cage. Side nets are mandatory on both sides, left side must be quick release and mount straight from back to front (cannot go around the side head protection bar). All top bars of the roll cage must be padded with approved roll bar padding (NO PIPE INSULATION).

FUEL AND FUEL TANKS

Fuel cells are required and may be a plastic cell with foam or a bladder type - maximum capacity 4 U.S. gallons. Bottom fitting must be secured inside the fuel cell. Cells will be fitted with a cap and either a roll over valve or a vent line long enough to go below the bottom of the fuel cell to prevent leakage if overturned. Fuel cells will be located in the tail section. There must be a fire wall between the fuel cell and the driver’s seat, either the front of the tail, a piece of aluminum, etc. Braided fuel line must be used between the fuel cell to the fuel pump. Fuel shut off valve must be visible and operational. Tail section bottom must be vented with a minimum 2" diameter hole. Fuel lines must be clamped on in a manner that cannot be easily removed, and the fuel lines will be enclosed in a protective outer casing. If a fuel cell cap is found to be missing or fall off during a race the car will be disqualified for the night plus 1 week and a $50.00 fine due to a safety violation. Gasoline only.

TIRES

5" and 6" slick or treaded. Grooving or seeping allowed on slick tires. Any compound allowed, but will be under review after the 2008 Bill Davis Memorial.

 CAR DIMENSIONS AND BODY DESIGN

The wheelbase of the micro sprint shall be a minimum of 42" and a maximum of 48". Maximum width 54", measured from the outermost left side point to the outermost right side point.  Maximum length 100". The hood may be a wedged hood or a standard sprint car body design made from aluminum, fiberglass or a fiber poly substitute. The hood shall extend from the roll bars to a minimum of 1" from back of the front bumper to 4" from the back of the front bumper. The hood shall be inside the front wheels. The hood must be fastened in 3 locations. No front tire mud flaps or covers allowed. All micro sprints must have a sprint car tail, some downsize may be necessary, made of fiberglass or fiber poly substitute. The tail must not extend more than 36" above the bottom of the chassis.  The tail section of the micro sprint must extend at least 22" from the back of the axle and be inside the bumper. The tail must mount inside roll cage hoops. Hood and tail must be in when on the track. Body panels shall be changed or altered if the tech. inspectors feel there is a safety or visibility problem. The intent of these body rules is to provide for the construction of safe and attractive micro sprints. Any cars not fitting these descriptions shall be asked to make the necessary changes by the tech. Inspectors. All micro sprints shall be neat in appearance, professionally painted with large, legible numbers of contrasting colour. The car shall have one number on the hood, minimum size 6" high, numbers on each side of the tail, minimum size 9" high, numbers on each side of the wing, minimum size 9" high. Only 1 and 2 digit numbers are permitted to be used. All microsprints are required to have a top wing. The wing will be made of aluminum (with all sharp edges removed), fiberglass or lexan. The wing must consist of a centre section, minimum 4 sq/ft, maximum 10 sq/ft, and two side panels. The left hand side panel shall be no larger than 24" high by 45" long. The right hand side panel shall be no larger than 13" high by 45" long. The wing shall not be mounted any higher than 10" above the roll cage. The bottom of the front edge of the wing must be a minimum of 38” from the bellypan of the Micro sprint.  The wing must pivot at the front fastening point or the back fastening point, with the opposite having a quick release pin so driver can exit quickly in the case of an accident. The wing cannot be mounted solid to the roll cage. Front wings allowed, centre section 2 sq/ft maximum.  Front wing can not be mounted so it over hangs the front bumper or front wheels.

 COCKPIT AND DRIVER SAFETY

High back aluminum drivers seat are required, mounted with four 5/16" bolts minimum. A head rest is required on the right side of the driver’s seat unless is driver is wearing a safety approved head restraint system.  This head rest can be quick release to aid in the removal of the driver.  Left side head rest and shoulder supports are recommended.  3" driver seat belts and shoulder harness are mandatory (5 Pt. harness) and shall be bolted or fastened to the frame. Each belt should fasten separately to a common quick release type unit. Any belt showing wear or deterioration will not be allowed. Seat belts must be stamped within 3 years or newer and are subject to tech approval. The complete belt assembly shall be worn at all times while the driver is on the racing surface. The lap belt is designed to hold the lower abdomen, hip and pelvic area into the seat and to provide the majority of control in holding your body down into the seat bottom. The lap belt should be mounted at a 45-degree angle to the spine no matter what inclination your seating position provides. Always allow the lap belt to lie across your lower abdomen and route smoothly all the way around the hips to provide as much distribution of weight as possible. The lap belt should not be routed over the top of the sides of the seat. We want belts to hold your body, not the seat. It is important to route the lap belt through the slot provided in the seat, to provide proper distribution of pull. The shoulder harness is the most abused belt in the harness system. Used improperly, these belts will hurt you in a hard crash. The main function of the shoulder harness is to hold your torso back into the seat. The shoulder harness should be routed so they pass over the top of the shoulder, traverse at a 90 degree angle to the spine no matter what the inclination your seating position provides. This allows you to provide the proper tension required to hold your upper body back into the seat without taking your breath. The belts should not be allowed to run down your back below shoulder height before crossing through the shoulder harness slot in the seat, or to permit the belt to run across the bony structure at the perimeter of the shoulder or damage will result. The shoulder belts should be routed through the holes provided in the seat and across the cage tube to provide the best control of location of the belt. Side nets are required on both sides of the cockpit. Left side net must be of quick release type. A rock screen is required to be attached to the front roll bars by steel clamps. Screen is to be painted flat black. The screen is to be made of 1/8” wire mesh with a hole size of 2”x2” squares. Screen must cover completely from left to right roll bars and may have a maximum gap 4” top and bottom from horizontal roll cage tubes. All protrusions, brackets, and bracing in the cockpit area (including roll cage) shall have smooth or rounded edges. An engine kill-switch is mandatory and must be mounted in a location accessible to both the driver and safety crew. Engine components, body panels, etc. shall not obstruct driver’s vision, no mirrors will be allowed. Radio communications between the driver and the pit crew is not allowed. All critical bolts must be drilled and pinned (steering, brakes, spin plates).

DRIVER APPAREL

The driver shall wear full protective racing apparel. A full-face helmet with proper fastening and protective eye shield is required. It must be current Snell Foundation testing standard Snell 2000 or better. A fire resistant helmet, nomex balaclava (head sock) and fire resistant driving shoes are recommended. A minimum of a single layer proban driving suit, one or two piece is mandatory. Safety approved neck collar is mandatory unless the driver is wearing a safety approved head restraint system. Arm restraints worn below elbow are mandatory. Nomex driving gloves are mandatory. The track management reserves the right to disallow any safety equipment that is questionable in nature.

MEDICAL REQUIREMENTS

All competitors shall be physically and mentally healthy in order to compete on any given race meet. The track management reserves the right to disqualify any competitor deemed "unfit to race" by track personnel. If a driver is rendered unconscious from an accident on the track, the driver upon regaining consciousness, shall be unable to compete for the duration of the evening. If a driver receives an injury requiring hospitalization or continuous care by a physician, the driver shall be required to submit in writing, a medical release on the attending physician's letterhead and it shall be received by track management 24 hours prior to the next scheduled race meet in which the driver wishes to participate. Also, the driver must show to track management, the ability to enter and exit the car quickly and safely before being able to compete. No alcohol or drugs are allowed at the racetrack.

 

 TRACK  MANAGEMENT AND THE RULE BOOK

The rules, specifications and procedures set forth herein are designed to provide for the orderly conduct of racing events and to establish minimum acceptable requirements. By filling out an "Official Registration Form", it is deemed that the participant agrees to become familiar with these rules, specifications and procedures and abide by the directions set forth and prescribed subsequently by track officials. No express or implied warranty of safety shall result from publication of or compliance with these rules, specifications, and procedures and/or subsequent modifications. They are intended only as a guide for the conduct of the sport and are in no way a guarantee against injury or death to participants, crewmembers, spectators, race officials or others. The management reserves the right to reject any car or driver entry on the basis of non­compliance with this rulebook. All cars must pass Technical inspection and all drivers must be registered before racing. If you cannot be teched and register on the dates set by the club at the beginning of the season you will have to make an appointment with the Technical Inspector. This appointment will cost $50.00. There is no cost for inspection on the dates set out by the club. To pass inspection cars and drivers must be completely race ready. I.e. all painting and lettering complete on the car, driver must bring ALL safety equipment for inspection. The management reserves the right to check any car at any time for compliance to any and all rules as outlined in this rule book and without prior notice given. Any new technology in the marketplace available to micro sprints, but not necessarily covered in this rule book, must be brought to the attention of the track management before it is allowed to be used. Failure to do so could result in disqualification before or after a race. If a car is in violation of any car specifications, the management reserves the right to impound the component or that portion of the car that is in question for further examination. Track management reserves the right to impound any car involved in a personal injury accident of any kind for up to 72 hours from the time of the accident. When a competitor is "subject to disciplinary action at the discretion of track management" one or more of the following penalties could be invoked: a) Race disqualification b)               Lap penalties c) Position penalties d) Handicapping penalties e) Suspension from competition f) Loss of championship points g) A monetary fine. Cars entering the pits during the race may re-enter the same race, with the direction from the pit steward, at the end of the next caution period and must rejoin at the end of the field. Any car that re-enters the race without the direction or consent of the pit steward shall not be scored and be disqualified from that race. Drivers with concerns will not attempt to talk to any track official during or after races. Any driver that does voice his opinion (this includes hand gestures) to track officials during or after the races will be subject to loss of points for the night, points for the year or suspension from further racing. Drivers that wish to voice their concerns will do so to the driver representatives, who in turn will speak with track officials. There will be four driver’s reps., these driver reps. only will voice all drivers' opinions and concerns to track officials. Track officials will make all the calls on accidents. If they can't decide who or what caused the accident, all cars involved will be sent to the rear. Failure to take your re­start position immediately will result in lap penalties or disqualification from that race. Any car stopped on the track due to accident or mechanical problem will be pushed to the pits by the four wheelers. There the car can be restarted and rejoin the race as directed by the pit steward. Each racecar will be allowed 1driver and 3 crewmembers per car. Track rules require all spectators must stay out of the pits until racing has concluded. Cars found to have more than 4 people will be given one verbal warning. If they persist penalties will be applied. Driver and pit crew will sign in with car number. Pit passes will be issued at sign in. And hand stamps will be required to leave and enter the pit area. All teams must have a fully charged fire extinguisher in plain sight in there pit area at all times.  Microsprints that miss a night of racing will be forced to start at the rear of their heat race and if they qualify from the heat race they will start at best 13th in the A feature.  These start positions will continue in the weeks of return of the micro sprint for the duration the micro sprint was absent.  Eg.  #00 micro sprint misses 2 weeks, the following 2 weeks micro sprint #00 is racing he will start last in the heat race with a highest starting position of 13th in the A feature.  All involved cars in the initial caution will be rendered to the rear of the field.  This will be a trial situation and will be under review until the 2008 Bill Davis Memorial.

 

 

 

 PARTICIPANT RESPONSIBILITY

All drivers shall conduct themselves in an orderly manner. Physical violence or verbal abuse of any individual, official, participant, spectator at the track will subject the offender to immediate ejection from the track and possible suspension of racing privileges. All participants entering the pit area shall be sober and not under the influence of any substance that could impair their ability to participate in a safe and orderly manner. Drivers are responsible for the control and actions of their pit crew members. Unacceptable actions of crew members may subject the driver to penalty or disqualification from an event or suspension of membership privileges.

 ROOKIES

A driver who has not previously raced at Wonderland Speedway will be considered a rookie. Coloured ribbons will be attached to rookie cars until track officials have determined they are not required. Rookies will start at the back of their heat races until they have proven their ability at the discretion of the officials. The minimum driver’s age is 15 years. You will be allowed to compete if you are 14 but turn 15 before September 31,2007. 

Handicapping

The top 3 season point drivers and the feature winner from the previous week of heat race qualified Micro sprint or the top 3 finishers of the B feature will be handicapped for the start of the A feature.  The positions that these 4 cars will start in are 9th, 10th, 11th and 12th.  The highest finishing Micro sprint will start in 9th, the second highest will start 10th, the third highest will start 11th and the final car will start in 12th.  If these Micro sprints finish in the same position in the heat race then the lowest season point Micro Sprint will start in 9th, 2nd lowest in 10th, 3rd lowest in 11th and last week feature winner starting in 12th.

PARTICIPATION IN YEAR ENDING FEATURES

Participation in the season ending feature race at Wonderland Speedway is restricted to registered drivers and microsprints which have participated in at least 3 previous nights of racing at the track during the season.