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.
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. 😅
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.
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
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
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.
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 :-)
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!
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.
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...
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.
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!
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 .
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.
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.
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.
Is it possible to have the motors both tip 90 degrees forward on a switch to get a 'jet' mode? It's looking good though, I'm excited to see where it goes.
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
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?!
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. th-cam.com/video/55d5ppwQBQ4/w-d-xo.html
@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.
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
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?
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.
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!
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 awesome!!!
This is one of the best RC aircraft intro / advert beginnings I’ve ever seen! 🔥
That intro is lit 🔥🔥
This is the most honest sales pitch I have ever seen. Well done ^_^
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. 😅
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.
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
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 intro is a work of art.
Intro with smoke reminded me of the afterburning vampire you created... flite test will never be the same without you
Finally something tat is not a rocket propelled cutlery device
That smoke getting sucked into the props was awesome! Really cool shot!
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.
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 :-)
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!
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
Awesome job; this is a very nice flying machine!
Great job David! This copter is astonishing!
Absolutely love it when you do rc, specifically multirotor videos.
Last time I saw you David was back when you were in FliteTest. Good to see you still active with the community.
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: th-cam.com/video/KON3TaSqcDM/w-d-xo.html
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.
Omg. I turned up the speakers for this.. again. Great job!
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!
Splendid! Way to go, David!
A reminder how far the community has come
Your into was amazing. Well done.
David. I love you dude. I love everything about this.
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...
The beginning is soooooooooooo epic
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.
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!
Aaawesome! Great video David!!
I saw that movie that you were in, it was good, good job.
2:40 it‘s a physical more stable rotation, due to the heavy weight.
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 .
I suspect that when you pitch forward the rotor go forward than actual CG of copter.
Wow, looks amazing!
A bi-directional airfoil on the booms may help with horizontal stability
That Bi looks insane!👍 Next level!😎
Looks awesome. Great video
Are you ever coming back to US to visit Flight Test
VIDEO FROM DAVID AAAAA
wow, PeterSripol, ProjectAir, Giaco Whatever, and CurryKitten all commenting on one video! They're all like my top favorite channels.
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.
Beautiful intro! and a cool copter as well...
Please make an EDF version!
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.
Drone version of the V-22 Osprey. But it looks like something from the terminator.
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.
Nice Intro :-)
Add cowls to both those props and it will be a stunner.
Have you thought about doing a bicopter with EDF ducted motors like the Hunter has in the movie?
Is it possible to have the motors both tip 90 degrees forward on a switch to get a 'jet' mode? It's looking good though, I'm excited to see where it goes.
This is awesome. Do you have a blog?
Hey David have you considered turning it's orientation 180 degrees to be intended to fly like a Chinook helicopter?
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.
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
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?!
Great beard David!
Had to chop some weeds for the promo, didn't you David. _* looking great buddy!*_
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
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.
th-cam.com/video/55d5ppwQBQ4/w-d-xo.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.
can we also buy fully assembled bicopters somewhere? because im awfull at mounting electronics manually
Im Sorry to ask where can i download the STL , OBJ Files for the frame? i didnt find it just a full cover but i cant print it on full frame
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 a genius dude
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
Really cool
This is amazing. I'm wondering if it can fly with ducted props, like the original HK
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?
Is there any way to get one of these still? I don't see it on your store anymore and I'd love to build one.
Is it possible the heavy props increase the gyroscopic forces, and cause the bicopter movement to deviate from the behavior the software expects?
Very nice... dude ... congratulations from brazil...
cool Tucopter!
Looks sick
birds have 2 wings they use they tails a lot to balance. this does pretty well without a tail.
Have you considered using gimbal motors instead of servos to control the pitch of the motors?
Is this video filmed in Sweden?
Could this not be balanced by reverse engineering of the two gimbal system, as gimbals I think are faster than servos to respond?
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.
For how long will the mini tricopter be available.
This is the exact set up I've been looking for. Why did you stop selling the model?
With the loss of 2 motors, the 2 remaining are compensating for thrust. Even with the loss of weight, what’s the flight time on this?
Do you have to have to use the servos to fly this?
Where's the pew pew??😂😂
Top quality fella!
David were you the David in the movie Dr1?
Badass Jacket Bro 😊
I know right :D
What flight times are you getting on it, sir?
is the shop closed only because of COVID? or is it actually permanently closed?
i m waiting so HARD for the monocopter!! :-D :-P
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!
Does the body shape provide lift at a certain speed?
🖤Where’s the FPV?