X-78R: Brushed Micro Racing & Freestyle Quadcopter Drone & Tiny Whoop Frame

Description

**X-78R: Tiny Whoop Conversion Frame** **Tips & Design Appreciation:** If you enjoy using my designs please kindly consider take a minute to show your appreciation with a small "tip". Your contributions can assist in filament and parts purchases that can help me to design and make better multi-rotors frames. Your support in this way would be fantastic as it would really help me out with my work. If you can't, not problem at all! I hope that you have a fantastic time using the X-78R frame kit to build your own FPV Freestyle & Racing Micro Quadcopter Drone! **Social, Media & Sharing:** If you are proud of your creation please do take a picture of your build and share it (if you can) with a the link for this page so that others can also find out and enjoy using the design too. To me personally it is very satisfying to see someone take the time to use my work and I would love to see what you make! You can join the below Facebook groups where you can meet other people interested printing and FPV: 3D Printed Homemade Drones Group: https://www.facebook.com/groups/homegrowndrones/ Smaller group for users of my frames: https://www.facebook.com/groups/254825821981391/ Tiny Whoop Group: https://www.facebook.com/groups/tinywhoop/?ref=br_rs If you would like to see some footage of my designs in actions you can check out my Youtube page: https://www.youtube.com/channel/UCqneA_mBsOMC4p-IToCraYA?view_as=subscriber Flight Footage: https://youtu.be/5kS2n9WIq2s **General Aims:** I list my designs here on Thingiverse for free so that others can enjoy a reduction in the cost of the hobby and so they can have something fun and unique to fly. 3D Printing and drone building and flying can provide fun avenue to learn about mathematics, science and technology and can also help people find a sense of community. Part of providing free access is to help the young and those in education by providing a tool that can be utilized cheaply and easily. Creativity is a great tool for well-being and I also hope that by providing people a cheap route to a fun hobby they can enhance their lives. **Design Notes & Specs:** The X-78R is based on the X-26 Evo and X-26 Evo Lite frames. These frames had a focus on stiffness to increase strength and durability. The X-78R's focus is on utilizing flexibility to reduce the likelihood of cracking on hard impacts. In experiments designs and prints I noted that thinner pieces of printed filament tended to maintain some flexibility and found this to be reasonably consistently across materials. Using this as a base I utilized the same "Active Geometry" formula as in the Evo's to draw up the frame as this seemed to produce good results. The aim was to produce something light enough to have the "pop" of flying something with 56 mm Bi-Blades, but with the "zippiness" and maneuverability of something with a 40 mm Tri-Blade, without a significant compromise on durability. I have so far found this to be quite a happy house and garden flier. I note that with the 40 mm Tri-Blades there is a lot of room punching the quad in the 50 -100% throttle range which makes this quite a fun and fast flier. This design features more room around the Flight Controller and also thinner center struts to help reduce weight and improve ease of fitment. Frame: 78 mm Motor to motor True X Flight Controller: 26 x 26 Tiny Whoop style boards Motors: 0720 (7 mm Diameter x 20 mm Height) Propellers: 40 mm Battery: 230 mah - 550 mah 1s Hi-Volt **Active Geometry:** I am developing my own mathematical formula and process to help me draw better frames. I call this "Active Geometry". Using and refining this formula I am attempting to optimize my frames with respect to strength and weight and vibration dampening. **Build & Print Guide:** There are 3 frames to choose from and it is important that you choose the right one for your set up. The frames has been offered with the following clearance options: Exact measurement of 7 mm Clearance of 0.05 mm for diameter of 7.05 mm Clearance of 0.1 mm for diameter of 7.1 mm STL files are labelled accordingly. **Build instructions:** This frame was designed to fit a standard Tiny Whoop 26 x 26 mm Flight Controller. Build as you would build a Tiny Whoop and feel free to use whatever accessories and canopies etc that you want. Holes have been left at M1 (1 mm) so whatever tiny screws you have should be able to thread themselves into the holes. To protect your motors, cut a small length of heat shrink and shrink over the ends of the motors. This will also give you X-78R little landing legs to stand on. To mount your battery, pull a rubber band across a pair of arms for a simple and light weight method of attachment. It is recommended that you use the frames with clearance of 0.05 mm to begin. You can then chose another if you have fitment issues. **Printing Guide:** The frame should be printable in all common filament materials such as PLA, PETG, ABS & NYLON. I use an infill at 14.5% with the "Tri-Hex" pattern to maximize strength. This is a good starting point, but feel free to experiment and see what works best for your setup. If you want a very high strength frame I would suggest 100% infill. The frame may be viable in flexible filament, but this has not been tested. To print, lay the pieces down on the bed flat so that largest flat side is on the bed. **Flying Advice:** Printed frames are not carbon frames, it’s easy to forget that when you are flying. It is advised to treat a printed frame like that of a Tiny Whoop and to avoid landing on the motor bottoms or corners of the arms. When you first get it into the air, treat it gently until you get used to it. Since there frames are designed to balance perfectly and are actually “true X” this may feel a little strange at first. You may note that your sticks will be more even across all the axis of movement. It is recommended to bottom mount the battery for the longevity of the frame and arms. Of course, once you are proficient and comfortable flying with the frame mount as you wish. Plastic frames will protect your components very well, particularly from current and voltage spikes that normally kill components during crashes. Secondarily the frame breaking during an impact absorbs a great deal energy which would otherwise damage your components. The frames are designed to fully enclose the key components as much as possible of the drone so you should hopefully enjoy parts that last for a long time. ALWAYS CHECK FLYING REGULATIONS AND RESTRICTIONS LOCAL TO YOU BEFORE ATTEMPTING TO FLY YOUR CRAFT. **Originality of Design:** Of key importance to me is that my designs are original works. I always make my designs from scratch and try and make them as distinct as possible. I have taken great care make sure that my design does not take directly from anyone else’s work or infringes on any copyrights or patents. The unique geometry of this design alongside its unique design features identifies it as an original design and also builds in copy protection. If there is any duplication of any part of this design, a measurement can be taken of any two points and by simple calculation it can be proved. I am a British citizen and this design was produced in the United Kingdom. The natural design rights reside with me as accorded by European Union law. **Legal Disclaimer:** In no event shall I the designer be liable for any direct, indirect, punitive, incidental, special consequential damages, to property or life, whatsoever arising out of or connected with the use or misuse of any of my designs. In using my work you acknowledge that any and all liability is with you the user. You use this design at your own risk and are responsible for any consequences as such.

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