Edge of 3D Top Fuel Dragster Hardware Kit by Honeybadger

Take your 3D printing to the track with the RMRRF Top Fuel Dragster—an over 1-meter-long, fully 3D printable drag racing machine built for speed, performance, and serious fun.

Originally designed by Scott/Edge of 3D for the Rocky Mountain RepRap Festival (RMRRF) 2023, this dragster has already proven itself in competition at multiple RepRap events including MRRF and 3DPrintopia (formerly ERRF.)

This kit has been custom tailored to certain mods and files included in this GitHub original posting can be found here

Preorder expected to Arrive by end of June

Built to Perform

This isn’t just a display piece—it’s a functional, race-ready platform. Designed for durability and speed, the dragster performs exceptionally well across a variety of 3D printing materials.

• Compatible with PLA, PETG, ABS, and ASA
• Rear tires perform best in soft TPU for maximum traction
• Gears tested and optimized using Polymaker PolyMax PLA
• Account for Shrinkage on when Mixing Different Materials 

Complete Hardware Kit

This kit includes all required non-printed components, carefully curated to match the official design files.

• Custom hardware kit tailored to our latest files
  • 3MF files, STLs, and Race Rules (Github migration in Progress)
• Direct gear drive system included
  • 550 Motor
  • 3:1 Planetary Gearbox
• Full BOM (Bill of Materials) provided with Hardware grouping
  • Full BOM and Build Notes (Github migration in Progress)   

Skill Level & Assembly

Designed with accessibility in mind, while still offering a rewarding build experience.

• Files Plated and Printed on Bambu P1S, 3MF files provided
• Moderate build complexity
  • TPU Tires 
• Requires installation of M3 and M4 heat-set inserts
• Thread tapping required for certain components

Designed by Racers, Proven on Track

Developed and refined through real-world racing at major RepRap festivals, this dragster is constantly evolving with performance-driven upgrades.

Additional Items to Source for Ready to Race setup

• Printed Parts 
• Blue Loctite, Vibra-Tite VC-3, or Plastic Safe Thread Locker
• 3 Channel RC Transmitter and Receiver
• 3S LiPo Battery
  • Max size 5.5"L X 1.77"W x 1.22"H Max
• Small Foam Pad for Grease Barrier in Gear Drive 
• 1/8" Drill Bit
• Velcro Strip for Battery Holding
• 550/540 Motor Fan Cooler 
  • Helps keep motor in top condition
• (2) Spools of Filament for Frame and Panels 
• Siraya Tech Flex TPU - 85A Filament 1KG – Fabreeko