Mini drone quadcopter ultralight frame only 15g

This frame is exclusively designed for the Leflyer drone DIY kit

The kit costs 69.9 yuan on shopping platforms, please purchase it yourself

The modeling is based on its flight control circuit board size

Other kits with different circuit board sizes may not be installable

Please watch the video above for demonstrations and installation tutorials

The ultralight frame achieves a hovering time of 6 and a half minutes with a single battery

Since the joystick operation is similar to DJI drones

It is suitable for beginners to practice drone stick operation with a cheap quadcopter first

and then fly a real drone once they get the hang of it to reduce crash losses

Not suitable for FPV racing or aggressive flying, and cannot carry any items

It is recommended to fly in open areas, away from obstacles to prevent collisions

Initially, after seeing @P5013's this frame model, I got the Leflyer drone kit (the black one in the picture below)

This frame is very sturdy but also very heavy, with the frame alone weighing over twenty grams

After printing and several flights, I felt it was still too heavy

Moreover, the flight control circuit board was not securely fixed, only held down by two standoffs and not level, which was not very reliable

This inspired me to design a lighter frame myself

During the modeling process, the motor mounts drew inspiration from his frame design, I would like to acknowledge his contribution

My frame's final weight is half of his

Of course, the trade-off is that it's not as sturdy as his; his is almost unbreakable, mine needs to be handled carefully

The wheelbase (distance between opposite motors) is as close as possible to the original crossbar of the Leflyer kit, approximately 20cm

A longer wheelbase also means more stable attitude

Improved to the 3rd version and verified by actual flight before uploading

All sharp corners have been filleted to eliminate stress concentration points

Reinforcing ribs have been drawn on the back of the arm

Currently, the frame strength is sufficient to support 360-degree flips and aggressive maneuvers in 3rd gear (see video)

However, I cannot guarantee it will withstand crashes, as it's quite thin

Only 16 grams of material are printed, and after removing the flush and support material, the actual weight should be only about 15 grams

Even if it breaks, reprinting it only takes about forty minutes

The advantage of lightweighting is that a single battery's flight time is significantly extended, it's more responsive to controls, and has less inertia

Note: it must be printed with high-quality PETG to provide sufficient toughness with such a lightweight frame

Printing with PLA has not been verified; theoretically, PLA has poorer toughness than PETG and will be more brittle

The flight control board uses a slot-and-snap installation method, without any screws

The slots are precisely measured not to block the antenna, ensuring a stable installation

Please use the print profile I have set up for printing

Normal supports must be enabled, otherwise, overhang collapse may lead to inability to install

After printing, be sure to use a thin tool like a card to scrape from underneath

Be careful when detaching from the heated bed and removing supports

Do not twist excessively, as it may break

After all, in pursuit of ultralight weight, the thin frame can only withstand the torsion of flight; it will definitely break if forced by hand

The method for removing supports is demonstrated in detail in the video

Please be sure to install according to the video instructions

Attached: The kit looks like this ↓

Please find another model on this site for printing the remote control casing, no recommendations here