🏎️ STEM Racing Car Checklist 🏎️
Click on the sections below to reveal the secret specs, dimensions, and rules you need to build your ultimate racing machine!
🟢 Tier 3: Beginners (The “Car Only” Class)
👉 📏 Dimensions & Weight
- Weight: Minimum 55g (without the CO2 cartridge).
- Length: Between 170mm and 210mm.
- Width: Maximum 90mm.
👉 🛠️ Body & Parts
- Body: 3D printed or made by hand from an official STEM Racing block.
- Wheels: 4 standard wheels (must all touch the track).
- Axles: 2 steel axles (Max length 66mm, 3mm diameter) and 4 standard bushes.
👉 🛡️ Safety Checks
- No-Go-Zone: Must fit safely inside the car body.
- CO2 Chamber: Must hold the 8g CO2 cartridge. The safety wall around it must be at least 3mm thick.
- Tethers: You need an uninterrupted slot underneath and 2 standard screw eyes to guide the car on the track.
🔵 Tier 2: Intermediate (Stepping Up)
👉 📏 Dimensions & Weight
- Weight: Minimum 50g (without the CO2 cartridge).
- Length: Between 170mm and 210mm.
- Width: Maximum 90mm.
👉 🛠️ Body & Parts
- Body: Must be 3D printed.
- Wings: Front wing and Rear wing must have a thickness between 2mm and 15mm, and a clear span of at least 50mm.
- Wheels: 4 standard wheels and 2 standard axles.
👉 🛡️ Safety Checks
- No-Go-Zone: Must fit safely inside the car body.
- Tethers: 2 standard screw eyes attached to the bottom.
🟣 Tier 1: Advanced (World Finals Contenders)
👉 📏 Dimensions & Weight
- Weight: Minimum 48g (without the CO2 cartridge).
- Width: Between 65mm and 90mm.
- Wheelbase: Between 120mm and 140mm.
👉 🛠️ Body & Parts
- Body: MUST be CNC milled from an official STEM Racing Model Block (no 3D printing for the main body).
- Special Parts: Must include a securely attached Halo (v2026) and a driver’s Helmet (v2026).
- Wheels: Front wheels must be at least 13mm wide, rear wheels at least 16mm wide. All must be 28-32mm in diameter.
- Wings: Front and rear wings must have a chord of 15-25mm, thickness of 2-6mm, and a minimum span of 50mm.
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