The BICOPTER - TERMINATOR inspired RC Copter - only 2 motors?
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- Опубликовано: 5 окт 2024
- Get your Bicopter here: rcexplorer.se/...
Electronics kit: rcexplorer.se/...
Build video: • RCExplorer BICOPTER BU...
Sorry about the Audio :/
Join the forums: rcexplorer.se/...
Cameraman: Terje Larsen
Editor: Christian Kapper
Music by Mitch / daataa
Say hello to the RCExplorer Bicopter. Yes, Bi as in 2! This copter only uses 2 motors and 2 propellers to generate lift.
Pretty cool eh? But you don’t get much control with just 2 motors, you need something more; Servos! Pitch and yaw are controlled by tilting the motors in either the same or opposite direction.
This makes the RCExplorer Bicopter look freaking fantastic flying around. In full forward flight with the motors at full tilt, it’s reminiscent of the V22 Osprey.
The RCExplorer Bicopter is designed to look as badass as possible, and I think we succeeded. The frame is entirely made from high-quality 3k twill weave matte finish carbon fiber. This makes the RCExplorer Bicopter frame lightweight, durable and worth drooling over.
Just picture yourself rolling up your flying buddies and pulling this thing out. Guaranteed instant +10 to street cred and coolness (guarantee not guaranteed).
The sharp-looking backend not only looks like a formidable stabbing weapon, it also makes the copter fly better. The weight is distributed more evenly and the leverage arm is longer, which should make the pitch axis more stable.
Get yours here: rcexplorer.se/...
RCExplorer.se - Exploring the RC world, one crash at a time.
![Natanael Cano - Amor Eterno [Official Video]](http://i.ytimg.com/vi/EO4prCs6WpM/mqdefault.jpg)
Suuuper cool! Looking forward to more of this!
Saw that you build a Bi for the awesome phone video :D
We'd love to see one on your channel too!
You two should collab
TobbeTheDude agreed! Two of the finest brains to ever leave Flite Test, must definitely should do a collaboration video!
Guys you should all have the flight test crew fly to sweden to david and make a HUGE build/ collab together
"I need your Clothes, your Boots, and your Bicopter" ;) Nice video dude!
I need your bicopter, your flying skills and your beard.
Jörg Wessels you need my shit?
You still sound like the lovable Dave with the rosey cheeks, but you look like a viking named Death.
His cheeks are still Rosy in this video 😂
Sooooo cool. That smoke shot was basically from an 80s action/sci-fi movie. It looks amazing flying through the air.
Um... the whole thing was inspired by the Terminator, and the music was from the movie. 1984. Sci-Fi Action movie. There ya go. Not a coincidence or a reconstruction at all, but a direct inspiration.
This is one of the best RC aircraft intro / advert beginnings I’ve ever seen! 🔥
This is awesome!!!
That intro is lit 🔥🔥
This is the most honest sales pitch I have ever seen. Well done ^_^
Intro with smoke reminded me of the afterburning vampire you created... flite test will never be the same without you
Awesome-sauce. I do love it, and as soon as you said R-Type, a little noise went "ding" in my head and I could see the other parts of the design inspiration :D
That intro is a work of art.
Looks fantastic David. Glad you put another video out. I’m computer tech-traded and time starved otherwise I would get one and help,with the input. Looking forward to see how far you get with it. I think if you get the bugs worked out, you’ll be on a big money winner. Prototypes are always hard. Love your work. Love your videos. Miss the rocket knife. Thanks for all you do. Norm.
Sorry about the audio :/
David Windestal Oh, I thought it was my headphones or being awake at 4am. Sounds like I’m underwater. haha
furonwarrior XD
Can I ask how hard would it be to add a static tail motor?
Where I live, the barn swallows nest all around my house. Watching their forked tails move while in flight reminds me of these new bi-copter builds. Looking closer into nature is very revealing.
cordell robinson Probably hard. These control boards are a pain in the ass. You’re better off just making a tricopter. David sells them in his store. I wanna buy one when I get a job. 😅
The basic principles of flight and especially helicopter-style flight says that for a regular style helicopter to fly the rotor must be over head and directly above the center of gravity. The same is true for a bicopter when you start to get into tricopters quadcopters and so on you can begin to lower the position of the rotor relative to the center of gravity because the multiple rotors give three axes of stability. Where has two rotors only give to access of stability. Your pitch access is unstable because your rotors are not high enough above the center of gravity. Try making a modified boom that raises the motors up and see if your results don't improve
That smoke getting sucked into the props was awesome! Really cool shot!
I absolutely LOVE the looks of this thing man! I've always wanted a bicopter too. I was thinking this was Terminator inspired since I first saw it. GREAT JOB man!!
Awesome Windestål action footage which always enhances the experiece, followed by his always cheerful and fun commentary, and the bicopter looks cool too :-)
Finally something tat is not a rocket propelled cutlery device
Absolutely love it when you do rc, specifically multirotor videos.
I just found your channel. The name, the voice and the awesomeness of the project was familiar from older FliteTest videos but man you changed how you look!
Awesome job; this is a very nice flying machine!
Now I want to see one of these with ducted fans...
Done!
flic.kr/p/2bvzKVT
i want to see one with jet turbines
@@Thrashaero It's been done as well.... there's 2-3 of them that come to mind if you just look.
4DCResinSmokler nah, I'm too lazy for that. how about you just give me a link instead?
@@Thrashaero Here ya go lazy: ruclips.net/video/KON3TaSqcDM/видео.html
BL-Heli Motor filtering fixes the shakes. Swapping from 5" Tri-blade to 6" Bi-Blade gives the copter a larger disk area, which enhances the stability and increases the flight time. DAL 6045 are really good and mostly unbreakable.
Great job David! This copter is astonishing!
Aaawesome! Great video David!!
Last time I saw you David was back when you were in FliteTest. Good to see you still active with the community.
I saw that movie that you were in, it was good, good job.
i thought u were gone man. I actually stopped watching ft for a while when u left. Great to see u still at it!! keep up the great work
Omg. I turned up the speakers for this.. again. Great job!
Neato. If the body and support booms had a bit more aero to them (providing lift), would be neat to see full forward capability like the V-22 Osprey. As it is now, the tail is more like fletching on an arrow - providing stability in only one direction.
Oh for the barbs of Odin! i didn´t watch you for a while and you now looks like Ragnar! Pretty nice Bicopter there btw!
The beginning is soooooooooooo epic
If it misbehaves with heavier props, perhaps you should mount dummy discs (you had a lathe right?) and suspend the body using a couple of strings or even holding it if that feels safe. Just to see what the prop moment of inertia does to the dynamics. Perhaps it has to be modelled for the feedback, if the feedback has any sort of state observer or feed forward...
Splendid! Way to go, David!
Looks awesome. Great video
Your into was amazing. Well done.
That Bi looks insane!👍 Next level!😎
I'm sure there's a way to put some actual wing enclosures on the arms and winglets out the ends, as well as smooth housing for the servo and joint (and perhaps L gear to put servo behind motor, or longer shafts and body holes to fit servos in the fuselage) to make it a little more efficient for FFF. Then maybe make some light, scale-ish body's to be more like an osprey and such.
Are you ever coming back to US to visit Flight Test
David. I love you dude. I love everything about this.
A reminder how far the community has come
Had to chop some weeds for the promo, didn't you David. _* looking great buddy!*_
Wow, looks amazing!
Have you tied looking at it in slow motion going backwards ?
Try that out get a fast camera to view exactly what it does in reverse. You will need a very high speed camera. I would try that with fog all around the copter . You need to see what's taking place with the air and copter when the freakout takes place. It appears the shaking happens from the motors going into a freakout right to left .
A whole new dimension gaining ground thanks to You...and I mentioned back in Your Flite Test days You'd be the one to pull off something amazing like this...Actually you've already done it several times,but this is the "commonly applicable" step in the RC evolution that should help break away from the quad..:)
wow, PeterSripol, ProjectAir, Giaco Whatever, and CurryKitten all commenting on one video! They're all like my top favorite channels.
Looks sick
Hey David great video. I think your problem when flying in reverse might have something to do with the fins on the back. When you go to stop it's possible the fins are causing just enough turbulence it disrupts the airflow going into the props. Anyway, I love the idea of a bicopter and I look forward to seeing where this leads.
Jack Damien the fins also produce an inherent instability when traveling backwards. Any yaw or pitch results in even greater forces in the same yaw or pitch direction. This is because they are effectively airfoils or fins behind the CG. In forward flight they stabilize, in reverse they are unstable and try to perturb the attitude of the craft until its flying forward again. This is definitely something that a fly-by-wire system may be able to control, assuming it can be properly tuned and has enough control authority. (The second point could be a deal breaker for the bicopter-maybe)
I’m not sure the fins have any significant effect on the flight of the copter. It doesn’t take much speed for it to wig out going backwards. I’d actually think its an issue with how the controls for backwards are set up in relation to the way it controls. If its going off standard setup for backwards fight then perhaps a custom set up for reward flight is needed.
It's like an arrow in that respect. You're not going to have much luck shooting one of those backwards either.
It's not a problem of the guide fins but rather the direction the props are spinning. You see, the props in forward flight have increased lift / stability on the outward portion moving forward. Now reverse flight and that extra lift and stability is not only reduced but also encounters prop turbulence rebounding off the frame. This has been confirmed by researching the Bicopter designs previously attempted by others.
What can help is mounting the props in an OAT configuration or 10-15 degree inward Dihedral. Furthermore, Ducting the props should also work but thus far my attempts at adding ducts have yielded ducts that are too heavy. (60 g each via SLS-Nylon)
My Ducted work thus far: flic.kr/p/2bvzKVT
Welcome back you OG (Orginial Gansta). Awesome innovative RC. And....You are looking Ragnar.......AF these days , thanks for sharing, and keep on keepin' on.
Have you looked at having a tail section that can be moved from front to back, in order to a just the CG in flight? It may help. Keep up the good work. Thank you for sharing.
Really cool
Beautiful intro! and a cool copter as well...
A bi-directional airfoil on the booms may help with horizontal stability
You need to add ducts with thrust vectoring flaps. Spinning motors have way too much rotational inertia to perform efficiently this is why it freak's out.
David, I wouldn’t recognize you, your appearance has changed so much. Lol. And I do like the new look! That is a killer Norwegian beard. I am so happy to see you putting up a video! You need to think up another video series like the rocket knife. Your friends and fans really miss you and your cool videos! Keep them coming and that is a great looking bicopter!
It seems that its natural movements are extremely smooth, how does it look flying fpv now David?!!
Sorry saw the challenge after posting comment!! I really think it could be a great cinematic platform with those swoopy (as in not-jerky) turn moves
Please make an EDF version!
Very nice... dude ... congratulations from brazil...
That's so cool!
Nice Intro :-)
Have you tried putting four servos on it? Get the motors on two axis of tilt. It works in my brain, can't explain it.
cool Tucopter!
Add cowls to both those props and it will be a stunner.
Very impressive but can you build a singlecopter?
You can. Singlecopter would it rather be called.
One large prop and four control surfaces in a prop wash will do.
Copter like that was built in Japan some time ago.
ruclips.net/video/55d5ppwQBQ4/видео.html
@@azgarogly ahh cool thx man
You mean a helicopter?
@Kelly Flynn : nah, helicopter still has a tail rotor. I believe the term that was used in the old KK flight control boards is/was unicopter
@azgarogly : that thing reminds me of a tiefighter without the wings.. or one of Darth Mall's probe droids! (=
Kelly Flynn
Actually, classical helicopter has two rotors, if you noticed. As coaxial helicopter does.
In theory, to control in N-axis space, you have to have at least N control organs on your vehicle.
Difference between helicopter and multirotor is that helicopter has articulated rotor with collective and cyclic pitch controls. So one rotor is 3 axis control.
Multirotor has one axis control (two coupled axis, actually) per rotor, as it has fixed pitch rotor with variable turning speed.
So classical quad has 4 axis control by 4 fixed fixed direction pitch props. Classical tricopter has 4 axis control by 2 fixed direction props and 1 tilting prop (2+1+1).
Bicopter has 2 tilting props ((1+1)*2).
Singlecopter needs 1 rotor and at least 3 control surfaces to be fully controllable.
Cheap toy helicopters usually have two coaxial props (vertical thrust + yaw) and vertical tail prop controlling copters pitch. It has just 3 axis, cannot roll. These are actually multicopters, not helicopters, as the control is not achieved by controlling pitch of the blades.
So, all that stuff means that there is a difference between helicopter and multicopter. And to control the thing you need certain number of controllable sources of force. At least as much as the number of axis you want to control.
You're a genius dude
Drone version of the V-22 Osprey. But it looks like something from the terminator.
That's super cool! The intro was awesome & funny (like the part when it mowed the flowers!😅). I was wondering, would there be a way to get one of these to fly just using transmitter mixing, maybe something similar to a delta plane setting which uses elevons & a considerable amount of skill?
I suspect that when you pitch forward the rotor go forward than actual CG of copter.
Hey David lookind forward on the progrerss.
Only a couple of weeks before you released your frame I decided to build the Avatar Bichelicopter but with 30inch props. I am only starting to buy the electronics but I hope that i can learn something from your project to make my Bicopter fly reliable.
So good luck
Holy crap! 30" I need to see that copter!
@ when it is build at least half way I will let you know
So ive watched a couple of your video's and prefer the designs over all of the other copters ive looked at, I am looking ( tentatively ) at a couple as an extension of my Linux / ROS -> AI ( OpenCog ) experiments. I have a hexapod bot and want to add a couple of fliers for outside coverage.
Yes I am aiming at full autonomous with these ( perhaps the pocketbeagle ARM board or something similar ).
Keep up the great video's and designs, great stuff!
ah david is back :) love your designs but I really wonder why is there no option for fpv!? maybe because of the body moving but we could make use of the cam control code with a servo (tilt cam with servo) so it should be fine or? but at the moment it seems there is limited space for that.
i m waiting so HARD for the monocopter!! :-D :-P
This is awesome David. I’m glad I found you, but i do miss the rocket 🚀 sled 😊
Will you be doing more videos regarding the calibration?
VIDEO FROM DAVID AAAAA
Very good job done on this pretty rarely found bicopter! I like it very much and to build one myself some day!
I checked out the website of RC Explorer for the bicopter, but most of the parts are sold out. Where should I go to for a kit-version now?!
Have you thought about doing a bicopter with EDF ducted motors like the Hunter has in the movie?
Great beard David!
2:40 it‘s a physical more stable rotation, due to the heavy weight.
I hope sales are great. Painted it silver and dirty it up to look more like the movie. Then put out some more videos.
You're saying heavy things make it crazy, then make it smaller, just big enough to mount an FPV cam. Don't worry about the go Pro, FPV tech will become capable enough in the same size before GoPro bats an eye. And try interleaving the props to maximize prop size. Smaller scale means more power, less weight, more strength (relative to requirement)
Hi
Acro mode (pitch):
Try an exponential PD drop as throttle increases. That should get rid of the low frequency oscillations. Get fast servos, and reduce arm inertia about servo axis. That should get rid of high frequency vibrations.
^All of that is according to my calculations; was trying to make one but my city got very restrictive, I was also restricted on time, money fronts.
Would really love to see this fly acro; do a few flips and stuff.
I actually made one earlier on my channel, from Lego; but it was half crap.
Also DO NOT USE I gains on pitch in acro mode!
I wonder if these avionics could be put in a Kai Ying KY-Z2. ( One could use Betaflight ). Does the recommended radio receiver support OpenTx?
Too bad David hasn't had anyone add a inertial control gyroscope to these tilt rotors...to address the pendulum swinging.
Where's the pew pew??😂😂
Top quality fella!
This is amazing. I'm wondering if it can fly with ducted props, like the original HK
birds have 2 wings they use they tails a lot to balance. this does pretty well without a tail.
Freaking awesome intro
Badass Jacket Bro 😊
I know right :D
This is the exact set up I've been looking for. Why did you stop selling the model?
This is awesome. Do you have a blog?
I hoped really hard that you will pop up in Mark Roberts last video. Nevermind.
Excellent ya tried with fpv cam and price
Cool Aerial HK ( hunter-killer).
Thanks❤
OMFG I got shocked by how different you look if you compare when you were with the Flite Test crew. , Love the beard!
vet inte varför jag skrev på engelska men nice video, ser fram emot fler
Have you considered using gimbal motors instead of servos to control the pitch of the motors?
THIS IS SUPER COOL!!!!!!!
I WANT ONE!!!!
👍😁👍
That's why it remind me of BX-T.
Very very nice
The reason that it flies better with light props might be because the gyroscopic effect of the props is weaker with the light props🤔
I kinda want to see this with an EDF motor