Nick, Excellent work !!! An inspiration to all of us back at the Back-Pack Helicopter Group. At your rate we might be seeing some testing by Spring !! Wish I could be so far along !
Wygląda dobrze, ale nie sądzę żeby dobrze pracowało. Ta przekładnia jest zbyt delikatna jak na siły które tam występują. Wirnik ma zmienne w bardzo krótkim czasie i o ogromnej amplitudzie obciążenia, a to wszystko autor projektu powiesił na kilku prostych"ząbkach" nieobudowanej przekładni, gdzie o prawidłowości zazębienia decydują kilka podkładek z brązu. Czarno to widzę ! Nic dziwnego że w oryginalnym filmie ostatnie ujęcie przed próbą lotu to portret Matki Boskiej
Dear Nick, I am worried because somebody in rotorcraft news said that you had a crash in one of your trials,we Italians and Germans have been friends since Julius Caesar ended the war.I am the engineer like nobody else,make me questions and I will respond you asap,I am working now in DCR Ramjets and studying Scramjet,I got the equations material adiabatic is missing.Dont give up,Yours Johann Wegmann(Swiss)
How do you plan to lubricate the gears, get an oil can and squirt it before you ride. That needs to be enclosed, in a housing to where it can run in lubrication. it doesn't take much housing. All bearings take lubrication. The Oilite bearing made of sentered bronze are not good for very high loadings or run dry. The design is good but not finished.
I want one!!! Amazing!!! Still don't see how you are going to control yaw without blade pitch control independent of each other, or speed of the props independent each other, or a tail rotor
That's exactly what I was thinking. Also, all of the load stresses of the top rotor is placed on the shaft that runs through the vertical gears, which appears quite thin.
This is a very simple and easy transmission to build arrangement, can you show the cylindrical housing you have created to cover and contain the oil. Have you tried it in a craft yet and what sort of lift does this have. What it the horse power running through it.? I wounder if these spider gears are up to the constant horse power being transmitted as they don't have that power running through them in the car unless your son is dropping continuous donuts in your car.
you need 2 times as much blade separation ! I built one similar to that and with a gust of wind the blades would touch. don't make my mistake make the blade separation much larger ! ...at least 2 feet !
The Rotor head is very week, an if not reinforced will fatigue break right at the hub of the rotor head I have seen this happen several times with wind mills that were made with steel plate, which is alot stronger than aluminum, redesign and reinforcement of the rotor hub is very important a lot like the oh hell nut at the hub if it cam off. You need to understand the fatigue and flex of the blade hub where the blades are bolted on, as well as the root of the blade hub. The end flex of the prop is well known, that transfers down to the hub, that becomes a focus. So I suggest redesign and then not worry about falling out of the sky when you are having fun.
Best idea i,ve seen yet with and auto mobile rear end. Pls have you dad breath away from the camera next time. Couch cough ,whew bad breath! LOL. Nice job on it though all joking aside. Cheers bud,looks good!
Hello i am building one about like this and was wondering if you could give me some advise, i was wondering if you could tell me the right dimentions? thanks cole
@docscot11 Its simply an illusion. watch it again imagining they are counter rotating. you should see. @NickMonteleone he sees the top rotor as rotating in the same direction as the bottom rotor because he perceived it wrong. its called an optical illusion. the brain does weird things.
@ Chris and Me. Thats not completly factual. You dont need 2 independent drives for this application. I do know that typically the 2nd or bottom rotor is usually on a slip type differential for the reasons you stated but rotor #1 is usually direct drive. Watch a tail rotorless operate sometime and you will see that all rotor 2 does is counter the centrifical force and rotates as needed. Not to mention the little bit of added lift.
Thank you for makeing shuch a simple desine ,any one with half a brain knows you can cover the unit to contain greas for lubracation , and its easy to see you used auto differental gears for strenth ! Great Job !!!
Good morning everyone, sorry, I'm ignorant in the matter but I am very interested, I have three questions for you experts: 1 / coaxial exists in saving for autorotation ??? 2 / In the coaxial exists operation swashplate ??? 3 / Why is recommended not rise much with a coax ??? I thank you for your answers.
@Me102288 i don't fully agree that this is pointless for a no tail heli, because if you could change the pitch of the blades that's another way to differentiate torque and turn the heli.
@Me102288 no i entirely understand that mechanism and not needing to counter for torque. but i'm saying for yaw control it would be used. because, yes, they are locked together.
So I get how the contra rotating gears work , the gimbal and the chain, but how is the power transmitted from the engine to the smaller gear, when it keeps moving in all possible directions? Please keep the explanation simple for a total dilettante here.
I'm from Brazil and I'm very interested in rotor system so that parts are very difficult here and I saw in your video is very simple to make this a rotor. I wonder how you made the propellers of the rotor so that I have a base from which material to use. I appreciate the attention from already thank you very much
Your spider gears for this are hella cool. Are you planning on putting in small shocks on the final product to restrict motion abit and to also smooth out control operation for ease of control? Also was curious of the pitch angle on the rotors. How much pitch do you have on them?
Perfect!! Thanks Mike of this link. This will be the most interesting project! Please guys keep us informed about this perfect way to fly as "Skywalker"
Yeah, especially when you consider that the top rotor is only held on by shaft inside the vertical gears, you wouldn't want to introduce any excessive heat to this area.
Perhaps he does not have to, if the setup eliminates torque induced side-thrust, and it can be steered 360 degrees by changing the angle of the head itself.
@@yetanotherjohn Yes, but it can ONLY change direction in pitch & roll (forward/backward & sideways left/right) with this setup, yaw change (rotating horizontally left/right) is impossible without some other means of imparting a yaw force, for example; a tail rotor specifically for yaw control (since it doesn't need to correct torque imbalance), a gyroscopic reaction wheel, compressed air control jets, or something similar. All these setups are an unnecessary weight penalty considering yaw function can be designed into a contra- rotating head in the first place. This design, albeit very neat, is flawed by it's own simplicity. It's fine if you don't want the ability to spin or face a different direction!😅 There are better ways.
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Nick, Excellent work !!! An inspiration to all of us back at the Back-Pack Helicopter Group. At your rate we might be seeing some testing by Spring !! Wish I could be so far along !
Very impressive work I would like to make something like that myself
Wygląda dobrze, ale nie sądzę żeby dobrze pracowało. Ta przekładnia jest zbyt delikatna jak na siły które tam występują.
Wirnik ma zmienne w bardzo krótkim czasie i o ogromnej amplitudzie obciążenia, a to wszystko autor projektu powiesił na kilku prostych"ząbkach" nieobudowanej przekładni, gdzie o prawidłowości zazębienia decydują kilka podkładek z brązu.
Czarno to widzę !
Nic dziwnego że w oryginalnym filmie ostatnie ujęcie przed próbą lotu to portret Matki Boskiej
What! those things come out of a car rearend!?????? please tell me they did ! I'll build one!
@oysterlicker tail rotor. BAM
Im curious, how did you build the coaxial rotor head?
Dear Nick, I am worried because somebody in rotorcraft news said that you had a crash
in one of your trials,we Italians and Germans have been friends since Julius Caesar ended the war.I am the engineer like nobody else,make me questions and I will respond you asap,I am working now in DCR Ramjets and studying Scramjet,I got the equations material adiabatic is missing.Dont give up,Yours Johann Wegmann(Swiss)
How do you plan to lubricate the gears, get an oil can and squirt it before you ride. That needs to be enclosed, in a housing to where it can run in lubrication. it doesn't take much housing. All bearings take lubrication. The Oilite bearing made of sentered bronze are not good for very high loadings or run dry. The design is good but not finished.
Если делать электрический вертолет, эта деталь и не понадобится.
Marcos estas ingrenagens o sertões e trabalha Detroit de uma caixa ou ou graça nenhuma. Marcos
Simplicity is beautiful ! Thanks for sharing~
How would you control yaw? Fixed pitch with geared shafts... can't see how yaw is achieved. Great video
I want one!!! Amazing!!!
Still don't see how you are going to control yaw without blade pitch control independent of each other, or speed of the props independent each other, or a tail rotor
That's exactly what I was thinking. Also, all of the load stresses of the top rotor is placed on the shaft that runs through the vertical gears, which appears quite thin.
Say, how you gonna change the drag of the blades?
I appreciate the close up pov, answering a few questions I had 👍🏻
Gostaria de ter essa pessoa.
Como adquirir?
This is a very simple and easy transmission to build arrangement, can you show the cylindrical housing you have created to cover and contain the oil. Have you tried it in a craft yet and what sort of lift does this have. What it the horse power running through it.? I wounder if these spider gears are up to the constant horse power being transmitted as they don't have that power running through them in the car unless your son is dropping continuous donuts in your car.
this right here is one of the most important mechanisms of the 20th century
Doc you wouldnt happen to be a chiropractor?
you need 2 times as much blade separation ! I built one similar to that and with a gust of wind the blades would touch.
don't make my mistake make the blade separation much larger ! ...at least 2 feet !
The Rotor head is very week, an if not reinforced will fatigue break right at the hub of the rotor head I have seen this happen several times with wind mills that were made with steel plate, which is alot stronger than aluminum, redesign and reinforcement of the rotor hub is very important a lot like the oh hell nut at the hub if it cam off. You need to understand the fatigue and flex of the blade hub where the blades are bolted on, as well as the root of the blade hub. The end flex of the prop is well known, that transfers down to the hub, that becomes a focus. So I suggest redesign and then not worry about falling out of the sky when you are having fun.
Nice, but no yaw control.
Oh well, back to the drawing board!
Nice gear arrangements.... Superb idea
The gears that counter rotate the blade, what would you call that set up?
They are bevel gears
What are they called a joint that you made there with the gears can I just go to automotive store and pick that up?
SUPER!!!
Best idea i,ve seen yet with and auto mobile rear end. Pls have you dad breath away from the camera next time. Couch cough ,whew bad breath! LOL. Nice job on it though all joking aside. Cheers bud,looks good!
Like to see it in operation
what about lubrication of chain and spider gears?,why not a belt drive,a wide belt 3inch with forged aluminum pulleys,need a sealed unit[spider gears]
very good idea, why don't you show it working even in a model?
Hello i am building one about like this and was wondering if you could give me some advise, i was wondering if you could tell me the right dimentions? thanks cole
@docscot11 Its simply an illusion. watch it again imagining they are counter rotating. you should see. @NickMonteleone he sees the top rotor as rotating in the same direction as the bottom rotor because he perceived it wrong. its called an optical illusion. the brain does weird things.
@ Chris and Me. Thats not completly factual. You dont need 2 independent drives for this application. I do know that typically the 2nd or bottom rotor is usually on a slip type differential for the reasons you stated but rotor #1 is usually direct drive. Watch a tail rotorless operate sometime and you will see that all rotor 2 does is counter the centrifical force and rotates as needed. Not to mention the little bit of added lift.
Thank you for makeing shuch a simple desine ,any one with half a brain knows you can cover the unit to contain greas for lubracation , and its easy to see you used auto differental gears for strenth ! Great Job !!!
Good morning everyone, sorry, I'm ignorant in the matter but I am very interested, I have three questions for you experts:
1 / coaxial exists in saving for autorotation ???
2 / In the coaxial exists operation swashplate ???
3 / Why is recommended not rise much with a coax ???
I thank you for your answers.
@Me102288 i don't fully agree that this is pointless for a no tail heli, because if you could change the pitch of the blades that's another way to differentiate torque and turn the heli.
@Me102288 no i entirely understand that mechanism and not needing to counter for torque. but i'm saying for yaw control it would be used. because, yes, they are locked together.
So I get how the contra rotating gears work , the gimbal and the chain, but how is the power transmitted from the engine to the smaller gear, when it keeps moving in all possible directions? Please keep the explanation simple for a total dilettante here.
Hi, really good job, how I can contact you, what's app, viper, ...?
Show.
It is great to see some close up of this sort of kits thanks alot. Cheers,Pete
@docscot11 ........I'm not sure what you're talking about. See the videos of the rotors on the machine running
There is supposed to be a different number of blades on top as those below in order to counter the blah blah blah etc.
I'm from Brazil and I'm very interested in rotor system so that parts are very difficult here and I saw in your video is very simple to make this a rotor. I wonder how you made the propellers of the rotor so that I have a base from which material to use. I appreciate the attention from already thank you very much
Hi Nick lover your rotor head. Do you sell this product? Is fir use on single seat coax?
id real like to know how to get a set of blueprint so i could build one just to understand the workings of this cutie cocaxal head design
Your spider gears for this are hella cool. Are you planning on putting in small shocks on the final product to restrict motion abit and to also smooth out control operation for ease of control? Also was curious of the pitch angle on the rotors. How much pitch do you have on them?
very cool. An aluminum pipe with a seal at the top and bottom of the gears will hold the lubricant.
how much it costs, and where to buy
ça fait un petit moment... que je chercher un exemple d'un contre Rotor Léger Merci pour le partage.
Perfect!!
Thanks Mike of this link. This will be the most interesting project! Please guys keep us informed about this perfect way to fly as "Skywalker"
@docscot11 ....The spider gears are in a can which has 90w oil.
Shouldn't those bevel gears need a little oil. ? I know it's only 4-500 rpms, But oil is always a good Idea, especially at over 20 feet in altitude.
Yeah, especially when you consider that the top rotor is only held on by shaft inside the vertical gears, you wouldn't want to introduce any excessive heat to this area.
nice to see ya here:D Iam from da yahoo group, so how is it going
well it's about time ,that someone sho how it work ,thank's feller
@indianchief741 yes they did. 1987 Dodge 3/4 van to be exact
Does this control system work well without a swashplate.
gostei de do que vi me ajuda,como onde compro um rotor de pas duplo
10.
How will you lubricate the gears
where can one of those? + blades
A ball joint would work better at the base
same principles as a car differential (Spider gears) :)
Excellent simple and convincing
very informative and simple. I would say very useful.
where can i get this gearbox?
I would like the information on counter rotation head and the engine to use! I weigh 150 lbs if that matters, thanks
Go check. Gen H4
contra not counter. still cool
is possible a pitch for the prop?
Intresting design, but how will you change the pitch of the blades?
Perhaps he does not have to, if the setup eliminates torque induced side-thrust, and it can be steered 360 degrees by changing the angle of the head itself.
bravo !
@@yetanotherjohn Yes, but it can ONLY change direction in pitch & roll (forward/backward & sideways left/right) with this setup, yaw change (rotating horizontally left/right) is impossible without some other means of imparting a yaw force, for example; a tail rotor specifically for yaw control (since it doesn't need to correct torque imbalance), a gyroscopic reaction wheel, compressed air control jets, or something similar. All these setups are an unnecessary weight penalty considering yaw function can be designed into a contra- rotating head in the first place. This design, albeit very neat, is flawed by it's own simplicity. It's fine if you don't want the ability to spin or face a different direction!😅
There are better ways.
Cool! Very good idea!
sur shema please
Where i can buy this please ??? Thank u
Hi, I Mahmoud, I live in Egypt, its very cheap to do it in Egypt, and I know how to do it, you can share me if you like
WOW!!!
WOW!!!
Sky Scooter you tube
For sale ?
Very inlightening.Bravo!
Never mind, found the other clip showing the universal shaft. Would a flex shaft work, or is that too weak?
And if you have fixed gear ratio but can vary the pitch of the two rotors independently? (after all helicopters have variable pitch as standard!)
its no good, under power and load it jams itself to one side............CURTIS
Its dangerous. Not strong.
no more development on this video..I'm sure this guy who flew this craft have toasted his ass!
I hope this is not intended for human flight.