Body
Sprint car style body with a minimum 4 post rollcage. Must have scale appearing cage, hood, side panels, nerf bars, and bumpers. Exhaust headers must appear on both sides of car in "engine area" and be made of round stock or molded polycarbonate. Rear cage side panels may be used but can not extend beyond cage frame. Must have appropriate openings on both sides of cage in driver compartment, forward portion of side panels can be no taller than highest point of hood, no solid side panels. Maximum front bumper width is 4". No lexan or any other material may be mounted to nerf bars or bumpers that may assist as an aero device. All electronics, radio gear, fuel tanks must be positioned inside the cage side frames.

• Maximum Length: 18.000"
• Maximum width of hood: 3.600"
• Maximum cage width at driver halo, down tubes, and top frame rail: 3.600"
• Minimum vertical gap from top of hood to front cage crossbar: .750"
• Wing minimum height at leading edge: 5.000" from bottom of chassis

6 x 6 Roof Wing
Center section and side panels must be made from at least 3 separate pieces of polycarbonate, carbon or aluminum material. All corners and edges must be rounded and free of sharp edges. Main and Front wings must be mounted so that they are centered on cage, no offset wings. Wing center sections must have all 4 corners set at 90 degree angles, no canted or angled panels. Wings must also be mounted level from side to side. Center section of wing may not extend beyond leading or trailing edge of side panels. Side panels must have braces that hold side panel rigid at 90 degrees to center section during race conditions. Two braces are required from top of the center foil to the left sideboard and one brace is permitted below the center foil to the right side board. Braces can be a maximum of .750" wide and front edge of front brace must be no more than 1.5” back from side panel leading edge. Side Panels may have front, back, top and bottom turnouts of no more than .375" and are included in max dimension. Flat foil center sections will be allowed a .250” turndown at the leading edge. The 7 x 7 rubber tire wing will not be allowed regardless of the tires used.

See 6 x 6 Wing Diagram

Front Wing
Maximum top surface area is 4" x 2" with max side panels of 3" long and 1.5 " high, max of 1" above horizontal wing surface. See 6 x 6 Wing Diagram.

Wheel Base
(determined where outside of tires touch the surface of the track)
Between 9.5" and 11.5"
Maximum width is 10.25"

Minimum Weight
3.5 lbs. (56 oz.)

Tires
2.0 to 2.2 rubber street treaded or foam tires
All foam tires must be wiped clean of any traction compound before setting the vehicle down on the track or pit lane. Tires will not be allowed to leave tracks on the racing surface or pit lane. One warning will be issued before disqualification for the day.
No mini pins or ribbed tires

Engine
OS .12 TG production engine only. Must be out of the box STOCK. No modifications allowed. Rotary or Slide carb version ok. Any glow plug may be used. Glow plug gasket/washers of any size are permitted but not required. Production headers and pipes only with max 6mm stinger opening.

* No modifications to the stock, out of the box carburetor
* No modifications or additions to the head spacer
* No grinding, cutting, or polishing of the crank or other internal components
* Any marks inside the motor will be ruled on by management and are final
* Any replacement parts must be original stock
* Sleeve pinching will be legal to extend the life of the motor (Pending DODC ruling)
* No additional modifcation to the sleeve will be allowed.
* A pull-start TG can be converted to a non-pull start TG by adding the OS backing plate and grinding off the pull-start tab. (Pending DODC ruling)

Production headers and pipes only with maximum 6 mm diameter single stinger opening. No carbon fiber pipes. Max fuel tank size is 75cc

**Any intentional rule breaking with the engine will result in immediate disqualification for that race day and loss of any points for that race. The owner of the motor will be placed on probation for one year. If a person is found in violation of the motor rule while on probation, he/she will be banned from all limited class races at Staub Brothers' RC Speedway. Management will make the final decision.

Tear Down Procedure:
Management or a limited class racer who raced in the same Main with the subject can request an engine tear down. Management retains the right to deny a tear down. The source requesting the tear down must put up $20 for the subject's time and materials. The subject will tear down his own motor after the class's A-Main in front of track tech officials using his own tools. Only management, tech officials, the subject, and the person requesting the tear down will be present during the procedure. The vehicle may be impounded until the engine can be torn down. If the engine is found to be in violation of the engine rules or the subject rejects the request, the $20 tear down fee will be returned to the source and the above rule breaking consequences will be followed.