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Mechanical Rules

Frame / Chassis

  1. Any Commercial Full Size “Sprint Kart” chassis may be used
    • Custom Chassis may not be built from scratch.
    • For new teams, the Blue Shock Race X3 E-Kart is the new suggested platform to build on.
    • The BSR X3 can be bought in the following configurations from GetShockt:
      • Full Kit including Power Unit (15KW Motor + Controller) and Battery (96V Li-Ion)
        • With Front Brakes - $12,500 + freight
        • Rear Brakes Only - $13,300 + freight
      • Chassis Only
        • With Front Brakes - $5,500 + freight
        • Rear Brakes Only - $4,700 + freight
  2. All Chassis components must be documented on a BOM declaring the part number and supplier.
  3. All Chassis must include mounting points for Front and Rear bumpers.
  4. Mounting Components may be welded to the chassis of the go-kart.
    • The chassis integrity must not be compromised by the welding process.
    • The process of welding to the chassis must act to only add structural parts and must not involve the removal of any section.

Tires

  1. Go-Karts must use the following tire sizes:
    • Front Tires - 10 x 4.50-5
    • Rear Tires - 11 x 7.10-5
  2. Go-Karts must use the following compounds of slick tires:
    • Hoosier R60B
    • Vega XH3 Green (Hard Compound)
    • Vega XM3 White (Medium Compound)
    • Other tires may be allowed as long as they are of similar durometer to the above compounds. Please contact competition organizers for clarification on allowable tire compounds.
  3. Go-Karts must have the Front Wheels or Wheel Hubs mounted to the spindle with a Castle Nut and Cotter Pin or with a Locking Nut and Safety Wire. (Refer to the wiki for examples.)
    • If teams choose to use Wheel Hubs then the tires must be secured to the Wheel Hub with a Locking Nut. Safety Wires are not required.

Brakes

  1. Go-Karts must have a minimum of 1 mechanical braking mechanism.
    • Motor-Based braking only in lieu of a mechanical brake is prohibited.
  2. Go-Karts must at minimum have brakes on both rear tires.
    • A rear axle with 1 brake assembly attached will count for both rear tires.
  3. Teams are encouraged to have brakes on all 4 wheels of the kart.
  4. All hydraulic brake lines must be braided lines with the appropriate fittings to prevent leaks.

Weight

  1. There is no maximum weight.
  2. There is a minimum weight of 275 lbs with all components attached to the kart.
    • It is advised that teams use corner scales to balance their Go-Kart. Common Go-Kart weight distribution is provided below they are not a requirement but a suggestion for a starting distribution.
      • Front to Back -> 43% to 57%
      • Left to Right -> 50% to 50%
      • For further information please see this article not affiliated.
    • Suggested go-kart weight is above 300 lbs.

Mounting

  1. Any component mounted directly to the chassis not mentioned already must be secured with a threadlocker.
    1. Components that are needed to be removed and remounted frequently may be secured with a Positively Locking Nut.
    2. Electrical wires must be secured with cable ties or similar items.
  2. Internally Mounted Components must be securely mounted such that the components do not become detached or loose inside their container.
  3. The above mounting rules are enforcable through visual inspection with physical inspections if there is concern.

Weatherproofing

The purpose of requiring weatherproof containers is to prevent interruption due to light weather fluctuations. There is no intent to run in Heavy/Severe weather. IP65 is rated to withstand dust intrusion and water intrusion up to a direct stream of water.

  1. All components mounted to the go-kart chassis that are not rated for exterior use must be contained within an IP65 Rated Container.
    • Containers must use IP65 Rated grommets and fittings for cables and connectors.
    • Containers must have ventilation.
  2. Examples of components that must be in weather-rated containers:
    • Motor Controller (if not rated for external use)
    • Batteries
    • Computers
    • Microcontrollers
    • Breakout/Distribution Boards

Materials

  1. Any non-Internally Mounted Component must not be subject to the following:
    • Acrylic
    • Any Brittle Material
      • Most PLA and ABS 3D prints are classified as brittle.
  2. Non-Brittle materials contain but are not limited to:
    • Polycarbonate
    • Delrin
    • PETG
    • TPU

BOM (Bill of Materials)

  1. Teams must provide a Bill of Materials for all mechanical components NOT mounted internally.
    • Each mechanical assembly must be represented by an individual section in the BOM.
  2. A team is able to estimate the cost of a component if it is unsure of the total value of the component.
    • This must be stated if the cost is estimated.

Resources

The following resources are not affiliated with Autonomous Karting Series Inc. but are included to aid teams in finding and sourcing components.

Go Kart Suppliers

Tires