Craycle TPU Lipo Strap STL Files

Inspired by ProtoFPV Original Concept

This design is inspired by the original TPU LiPo strap idea developed by our good friend Patrick from ProtoFPV.
You can explore his work and products at https://protofpv.com.

The Craycle version was redesigned to match Craycle airframes better, focusing on the most suitable length, width, and thickness for our mounting systems. This approach also allows us to adapt and modify the design for future Craycle models as mounting needs evolve.

📦 Included in your download

• STL files - Optimized geometry for strength, lightness, and easy assembly
• 3mf project file - Bambu, Creality, Orca, and Prusa Slicer compatible
• Three size options – 160×18 mm, 180×18 mm, and 240x18 mm
• Technical support – Expert help to solve problems and keep you in the air
• Lifetime updates – Our models evolve, so you never get left behind
• Ready to print – No additional hardware required

Available Sizes

• 160×18 mm
• 180×18 mm
• 240x18 mm (added 15.01.2026)

All sizes are designed to cover common LiPo battery formats used in FPV and RC models. Please ask for a size option if needed.

General Specs

• Width: 18 mm
• Lengths: 160 mm and 180 mm
• Min. Printer Build Volume: 180 mm³
• Material: TPU (any shore, any brand)
• Designed for repeated use
• Optimized for Craycle mounting geometry

Tested in Real Use

This TPU Lipo Strap design was developed by December 2024 and has been actively used in our own models since then.
For more than a year, it has been tested in real flights and is now included directly in Craycle Printed Kits, confirming its reliability in long-term use.

Material and Flexibility Notes

This is an STL product, and it does not require a specific TPU brand or hardness to function properly.

• Any TPU filament will work
• Different Shore hardness values are all usable
• Users are encouraged to experiment and choose the flexibility they prefer

Even with black TPU at 96A Shore, the strap performs correctly.
Generally, white TPU tends to feel slightly softer than black TPU at the same Shore rating, but this does not impact functionality.

All reasonable TPU variations provide sufficient grip and flexibility for this design.

Why Choose This STL

This design focuses on correct geometry, adaptability, and long-term usability, not material marketing.
Print it with your preferred TPU, tune the flexibility to your liking, and integrate it into your setup.

Download the STL, print it your way, and use a strap design already proven in real flights. ✈️🔋