Sailfly X Replacement Frame for FPV Quadcopters

Design preview. Rendered from the file, not a photo.
The maker says it fits: HappyModel Sailfly X. See the proof
This model is not currently offered as a verified ready to buy print.
What it does
- Shaped to match the HappyModel Sailfly X so it fits your existing build
- Printed in PLA or polycarbonate, so-that you get a stiff chassis base
- Open frame design gives you space to mount your FPV electronics
- Made to order in the USA after you place your order
- A chassis swap option for your Sailfly X sized quad build
Quadcopter frames come in many shapes. This one is cut to match the HappyModel Sailfly X, so you can rebuild your quad without hunting for a discontinued part.
The frame gives your FPV setup a chassis to mount to. It follows the same footprint as the Sailfly X, so your existing arms, motors, and flight controller line up the way you expect. This makes it useful if your original carbon frame cracked or snapped in a crash.
It is printed in PLA or polycarbonate, giving you a plastic alternative to the stock carbon fiber frame. Each one is made to order in the USA after you place your order.
This item is not made or sold by HappyModel. It is designed to fit their Sailfly X quad as a replacement part.
What it fits
The maker says it fits: HappyModel Sailfly X
That is the maker's word, not a fit we measured. Check the size below against your own.
- HappyModel Sailfly XFrom the maker's own listing notes, checked 2026-08-13. See the original post
Brand names here only say what this part fits. We are not connected to those companies, and they did not make or check this part.
What you get
- This design prints as one piece.
- Nothing else to print or buy for this to work.
What it is made of
Designs like this print well in PLA. Compare the materials.
Printed plastic is strong for its size, but it is not metal. We have not load tested this design, so we do not publish a weight rating. Keep it out of a hot car and away from open flame.
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Who made this design
Designed by Der6FingerJo. We did not draw it.
Shared under BSD. See the original design