Discussions
Looks awesome, but I'm wondering how the ESC's are holding up. Aren't they a bit underspecced for these motors?
yoo thats siq af. im building one rn, did you create the cad files for the camera mount?
Work of art man 👏👏
I have two prototype frames in work. One is a true-x quad frame (3-3.5") for double stack mounting, with tetrahedral construction for each of the four adjacent motor pairs. It is not as rigid as a simple Tetra frame, but it is easier to repair and has a lower CG. The other is a rather experimental frame that uses a servo to keep the battery in the horizontal position as it flies forward to reduce the aerodynamic drag. This is actually the second prototype. The first one flew well but was a bit fragile.
There are two other prototypes in abeyance, one for the Micro Hexa and one for the Tiny Octo. The motor layout is flat, but the footprint is smaller than a normal frame. Even though the motor layout is different from the regular hexagon or octagon, I found that they fly well if the motor mixer is set properly. These prototypes will be reconsidered after the above two projects.
That is absolutely incredibly my guy. What benefit does the first prototype have over the conventional toothpick platform? Still a pretty cool concept though while using similar tetrahedral construction from the smaller variants. I'm curious to see what that second prototype looks like. Seems like its focused on speed given you're prioritizing lowering drag.
very interesting work man! this is the exact reason why I follow you XD do you happen to have a YT channel where you showcase these frames? Would love to find more of your work if you have it on other platforms.
I think the ideal CG position for a multicopter is the center of thrust. Therefore, when I started my Tetra project I intended to mount two batteries connected in series under the upper arm, but this idea was abandoned because i realized it would be too cumbersome to prepare for each flight. Therefore, unless the battery is very light, the CG position is far from ideal. On the other hand, with current technology, the actual C-rate of LiPo batteries is rather better for larger ones. Therefor, in order to maximize thrust with the CG position close to the ideal potion, I think it would be a good option to build a long platform quad with a double stack configuration using the tetrahedral structure, if possible.
Lately, many people are building super fast quads with rocket style shells. I too like to fly fast, but I have no intention of participating in top speed races. I just want to enjoy more efficient high speed cruising without an aerodynamic shell.
I have only registered on YT, but not yet published. I am not very active on social media, so don't get your hopes up.
Man, that is a stunning build man. Extremely clean, lightweight, and overall an insane leap in technology the more I think about it. Like, just a few years we never even considered digital systems for FPV. Few years later, 5in drones are slowly transitioning to digital and we have a few options for digital....and another 2 years later, even whoops can be digital in reasonable weights.
also side note, Faebu FPV did a great job with that frame.
Thanks so much! And you are so right. It was a pipe dream only a few years ago. I cant wait to see what a fee more years will bring.
Faebu FPV is a great designer, pilot, and friend in Switzerland. I have probably built 20 1s toothpicks on this frame. He also designed the printed battery mount on the bottom of the frame.
I immediately thought of Dax and was pleasantly suprised to see the comment. Your builds are extremely impressive.
very nice! I built an analog version of the 2.5" version you posted on armattan a while back. I was having a great time flying it on 3s and 4s, though I crashed it and need to epoxy the bottom plate. I wish I had a picture of the drone itself to post, but it is in pieces right now ... going to try and rebuild it to make it lighter than my first build which I had done in a rush. any plans to model a 3.5" version? and do you think you might list the tetras on cncdrones?
That version of the 2.5” Tetra kit was designed in response to requests received in messages on this site, and was only available for a short period of one month. It was actually the first prototype of the 2.5" Tetra, which I enjoyed flying with 1404 3800KV motors, but had strong frame resonance at 160-210Hz which still remained with the default filters. Since then I have been trying to improve it along with the 3" versions. Now finally released at Armattan productions, it is no longer lightweight. If you don't mind the 2.5g weight increase, the URL for the Tetra 25 (for 14mm wide camera) kit is https://armattanproductions.com/pages/kit_detail/3348.
I have already designed the first prototype of the 3.5” Tetra, but have not yet built it. I have to modify the design of braces, because the longer braces might have frame resonance at visible frequency (~100Hz), which is not acceptable for HD FPV. It will take time to release the 3.5” Tetra because I have another project. I hope to release it within 6 months.
If you wish, I would like to list the Tetra series on cncdrones.
glad i was able to get one of the prototype collector's edition! :) the version you built with the o4 lite looks great. 2.5g seems like a reasonable trade off for the increased durability. i built mine with 6000kv 1202.5 motors, 65g dry weight. no top end thrust to speak of, but it was great for gliding along like a little bird. i was flying it over a frigid winter sea so I didn't get a realistic impression of flight time -- it was about 5 minutes to 3.5v with 450mah HV 3s or 4s fighting a freezing wind. but i expect in warmer weather it would fly for longer. i may transfer the build over to this 3" version that you've built for the sake of comparison. personally i would love if the tetra series was on cncdrones. :) looking forward to the 3.5" tetra and whatever you come up with next!
That looks really slick. I really like that frame. Looking to build something to buzz around my neighborhood with an 04 lite in it. This is probably a missile.
Cool build. How much does that weigh (not including battery)? What thickness top plate and bottom plate did you go with (looks like 2mm top, 3mm bottom)? I'm thinking about building a 2S version of this for my 04 "lite" build. I'm trying to get an idea of the weight.
That's a sweet build! The GEPRC Phantom frame combined with that JHEMCU FC looks like a recipe for agile freestyle. And with those DroneART motors and Gemfan props, it'll really rip. Getting smooth video from the Caddx ANT is key. This setup seems perfect for zipping around tight spaces, almost like you're playing Slope Game in the real world, navigating obstacles with precision and speed.
This is a mod for the HGLRC DRAKNIGHT O4, which was previously presented here. It uses the same setup speed stars
Hi... I have like this type of motor but only 6000KV.... It is very nice design and good quality... problem is totally useless motor.... I do not know what type drone can build around it? I tried 3inch and 2,5inch.... finally 2 inch https://rotorbuilds.com/build/30315 motor is heavy 10gramm and very powerfull... finally China did not discovery battery for this attractive motors not possible to feed it with enough amper :) 1207 is to big for small light build and to small for efficient powerfull drones like 1306 motors....
Very cool design with the various antenna layout. How does the GPS location work with it being further from the VTX antenna? Do you get GPS lock fairly quick with the VTX powered up or do you have to power up just the GPS to get a lock initially before flying?
Like you bought it of the shelf, looking that good. Why not opt for the 04 lite. The single board
Thanks! The 04 Pro has a measurable image quality upgrade relative to the 04 Lite. i also prefer the FOV on the 04 Pro.
Here's some footage from a recent cruise in the park. It was super windy but this thing performed!
https://drive.google.com/file/d/1V2wjfPdEyP1anyn7LPbf5Vinm2wn3-i8/view
Looks good and stable flight!