This is stupid. Even if anyone made a really lightweight human-powered helicopter, they could only fly for what... thirty seconds? I wouldn't waste my time on that... Maybe an airplane...
You have to be The Flash to get your self off the ground!!! What will happen if you get to tire to pedal?With all that pedaling there can't be any balance! Explain!
there is no way that thing is gonna get enough lift. take it from a person that flies. your machine you put together looks cool, and good effort and such, but no. not gonna happen.
Dont forget torque! As far as the number of blades etc etc. Look at the lift equation. What are the variables a helicopter can have to influence lift? Yes some helicopters have more blades but if you notice they are smaller than the versions with only two. There is a balance between lift and drag. I think its a great idea and concept. Keep up the ingenuity and like said before...NEVER GIVE UP!
You need a system that allows you to use your arms and legs in alternating motion. That way, more muscle power is delivered to the blades. You won't have any way to control the flight so, it will have to be balanced correctly to start with.
Your biggest problem will be how to counteract the torque to the rotor! As soon as you leave the ground, your chair will spin in the opposite the direction of the rotors. You will then crash.
Very interesting design. I wonder about the efficacy of the propulsion mechanism once the craft is airborne. Would it be a correct say that thrusting with your legs may throw off the balance of the craft, transferring the weight forward?
I have read the comments about humans not being able to generate enough power to get the rpms needed to achieve lift. One solution might be to hide the rotor in a smooth disc which will offer very little resistance as it builds speed. Then when you have plenty of rpms, deform the disc to expose the rotor.
even under the best circumstances human powered helicopter flight is a physical impossibility.we just dont generate enough horsepower to achieve flight
Does anyone here even know how to read? It says right in the description that this is a mockup, not a working prototype. And to efrainpalermo, I applaud you for stepping up to the challenge. Bravo!
Dude your going to need some sort of light weight gear system, That way you wouldnt use all your energy just getting the blade up to speed. what if you used like a oneway clutch out of a bike tire then you might be able to get 2 or 3 gears to help you. I like the idea of the weights to keep inerta though. What if you put 4 or 6 blade on it as well, that might help with extra lift. Or maybe like you spin an air pump then have the blade hooked to some sort of air motor, like an impact wrench?
Actually my redesign uses a one way clutch and a set of three gears, so you're right on with your suggestions:) I had thought of using an air pump but the amount of energy needed to get enough cubic feet per minute thrust was not very efficient.
@efrainpalermo Yes i supose thats right, it would take alot of energy. If you dont mind me asking, what contest is this? I love the idea of human powered flight devices. Even though they have hardly any range the process of designing one sounds fun. Is this contest for only helicopters, or are there planes to? I personley love to fly. How do you plan on stable flight, do you have a tail rotor? Thanks for posting this vid, it has my brain wirling. I would love to try somthing like this.
This is the Sikorsky Human POwered Helicopter Contest. This one is just for helicopters but there are other human powered contests out there. Im going to use tip propellers to get away from using a tail rotor. The contest only calls for one minute of flight, about all one could do anyways, so not something for sustained flight :)
@efrainpalermo Cool, I might look into a plane one, do you know how fast you need to spin the rotor to become airborn? And do you know how fast you can spin it now? By human powered, Does that mean you have to manualy spinn the blades, or can you get gravity to help you? Because what if you used a hand gear with a gear reduction and cable to pick up a set of weights then let them fall to start the blades then you use your feet to matain blade speed, that way you could have a lower gear ratio.
@mcnabadl1 ~ Dude, when airplanes were first made they had 4 to 6 blades. Then we learned that when it comes to lift, less is more. Gradually propellers consisted of only two blades. The most efficient rotor is the Savronius Rotor that has only one blade with a counter balance. The problem is wind turbulance from the extra blades. I like your idea of gearing, though.
Don't listen to fools with no vision. Although your invention may never fly, of course you're onto something and it's a good concept so keep at it. Maybe develop a power source that delivers consistently on an earth machine first (just so no-one gets hurt) someone invented a pedal car, a push car maybe? It's powered by arms and is like winding up a spring. Check it out, maybe helpful
@Awadhut20993 TO ANSWER YOU'RE QUESTION ABOUHT , DOEST IT FLY. NOP IT DOESNT FLY, BECAUSE THAT GUY IS FUCKEN CRAZY, AND HE DOESN'T HAVE A JOB. BUT ALOT OF DREAMS....
you could make a new version with a carbon material and if somehow you added a power conversion system using your arms as well as your feet such as a rowing slider system. you could get more push and if you take off the weight tips you have much less resistance. if you make a more stout wing system with a lighter alloy with a ring connecting the blades you could have more push for equal or less weight. not trying to be offensive. please notice this response for a later model.
Thanks for the suggestions. I am working on a newer model that's a very old video and was built to test my leg press power system, the frame and blades were built as props and wasn't intended for actual use:)
What happens if it actually does fly and one of your legs gives out? I mean, in all honesty Leonardo DaVinci had a better design. I do have to say that as a kid I thought of a similar design with bike pedals and heavy wood sheeting.. so there is noting wrong with dreaming.
Well for this contest all it calls for is to up 10 feet and only for one minute, so even if legs did give out not much of a drop. This video was made to show a test of my power stroke design and not how it the whole structure will be
It is easy enough to make a reasonable helicopter, but the power source will never be up to it! Not till we have hollow bones like the birds.....and smaller digestive systems. A little model helicopter might have a 300watt motor, well, that is what a human engine can produce! See Gossamer Condor....
Sorry man, cool idea, but I'd be willing to bet if you crunched numbers (device weight+your weight (forget drag even)) you wouldnt be able to generate enough HP to push yourself up
@efrainpalermo silly idea...! camone men.. - it never fly up..! You're "aircraft" looks like from 1900.. in the paset peoples were makeing like this - havn't no knoledge of fly forces.. Now even a child know that is to havy and peoples are to weak to make the prop rotating enough powerfull to handle the weight..
@efrainpalermo silly idea...! camone men.. - it never fly up..! You're "aircraft" looks like from 1900.. in the pased peoples were makeing like this - havn't no knoledge of fly forces.. Now even a child know that is to havy and peoples are to weak to make the prop rotating enough powerfull to handle the weight..
Wow, now thats a really COOL workout machine, We all know how hot exercise can make us and those fans must really keep the user nice and cool lol. Keep trying, work or not its really entertaining and I want to see some more.
You don't necessarily need more rpm's , by using lighter longer blades you can generate more lift. To a degree it's better to have long blades spinning with lower RPM for a HPH.
Look at the blades. they are bending down. not even creating enough lift to lift the weight of the blades. not going to get off the ground. unless your are 25hp super human. not a 1/2 hp regular human
I won't dash your dream man,however if you look at the old films of the turn of the century you'll find this ain't gonna happen,but best of luck and I hope I eat crow.
Efrain, if you google 'Arantix bicycle' you will find out about a company that makes a carbon fiber wrapped with kevlar moutain bike that only weighs 2.7 lbs. The design is not streamlined but is open. Maybe the company would be willing to donate to build a frame for your human powered helicopter in return for the publicity for their extremely light weight frame material. One of their bicycles cost $8000. If they said yes it would be a win-win both for your dream & for their company.
What's the name of the contest you are (or were) building this for ? ... and where's the contest taking place at ? ... i'd like to check out the everyone's inventions ! (if it's still on-going)
i like at 1:54 when the camera person backs up like the blades are gonna fly off. But dont give up! i can see it now man, just be sure to hit me up with some schematics so i can build my own. And im totally serious i want a helicopter so bad...
If you can get it off the ground for a few minutes at least.. then you can work on stability. maybe tether it with counter balanced braces so it can go up and not crash.
this can prove whether or not you can get lift for a reasonable amount of time without getting too tired.
I have doubts but think it is great you are proving it one way or the other.
A beautiful idea but the human body falls a fair bit shy of the minimal requirements to power vertical lift for it's own weight. Now a pedal driven propeller on a sail plane could be worked with some success providing there exists an absolute perfect environment. You have to understand even when you have the fittest human on the lightest aircraft possible you are relying on the greater part of your lift from thermodynamics . Best and safest choice is still internal combustion to power flight.
Most definitely the human body alone cannot do it, but the test is to create a mechanical advantage to make it possible and that's where the creative, inventive thrust of this whole contest is geared towards
@freecash4udotws I don't know if this has been attempted previously, but is it possible to store energy in the form of a flywheel or some sort of wind-up system? It would provide a greater torque than being powered directly by a human, plus the reliability and consistency a peddler cannot achieve.
Not when, but IF you ever get it off the ground, you will start to spin and fall down !!!!
You need another rotor that will turn CCW or tail rotor !!!
In my opinion, you do not have to worry about his. You'll NEVER get it off the ground. If yor feet movement would be the best there is, every bicycle would be already built that way. Too many mistakes already in concept.
Dude, you are going the wrong way from the beginning!
Cool, I am impressed that you could make the wooden copy:) I am no good at anything like that, wish I could build things like that would be great fun. Keep up the great work!
From my intricate wind tunnel tests (i.e. sticking a rotor blade section out of a moving car's window at various speeds) I calculated I would need 35-40 rpms
The problem is that most of the time you are not applying any force that means your input power is low. Tip weights will help smooth out your pulsed force application but will also increase disk loading. I commend your enthusiasm but I think you need to learn some physics if you really want to succeed.
I have a little spring to return the pedal but it doesn't add anything to the backstroke, it may be possible to increase the spring back to add a little but more power
Hi there, just wondering if you're going to make use of your arm strength at the same time? You could make it so that as you drive your legs put you're pulling your arms back at the same time. This would give you significant more power. Consider an Olympic rower using only legs versus legs, back and arms.
I have thought of using arms as well, maybe helping on the backstroke like you mentioned a rower would do though it would add a little bit more complexity and weight but worth a try after I see how my initial trials go
I like your passion and attempt at advancing innovation. Remember that with helicopters, they need the secondary tail chopper to balance the lift which the main propeller provides. I'm working on a self powered flying machine myself. Might have a video in a few months.
have you thought about the weight transfer involved with pumping your legs in this fashion in flight? How are you going to counterbalance the weight of your legs/the pedal moving back and forth? It seems like this motion would change the center of gravity drastically .. making the craft unstable .... also.... how are you going to counteract the rotational force of the blades to keep the body stable in one direction? Are you going to fashion some sort of tail on this?
Collective and cyclic pitch will be required to have controlled flight and also you will want some tail rotor system to counteract the torque of the main rotor so you don't spin in a hover. Very interesting concept though!
That won't fly anytime soon. My suggestion is drop the rotor 90 degrees back add wings + wheels and then it 1 would fly and 2 go slot faster. Ps a helicopter requires several things that that hasn't got and helicopters are hard to fly. Even modern computer packed ones I admire your spirit but Dont quit your dayjob
this is great but how long do you have to push this thing to get the rpms needed for liftoff. and you also need a rudder design. you would be smart to put an electrical assistance motor on the rudder and main rotors. this will make it much easier to start up and get a load off. and when it comes time for flight in the contest take it off will have developed by then. I will subscribe to you and I wish you the best of luck on the contest and mind the power weight ratio
Im figuring it would take about 4-5 minutes to get up to lift off speed then another 3 minutes to get to ten feet (contest height). That is a good idea on using a motor to start out with.
I doubt that this machine will apply even half the force needed to lift up without additional power sources. Also, the way power is transmitted, even if you have a strong spring to pull the footboard back up and continue rotation of the blades, it still would be taking power from the initial push-stroke.
Also, having tip propellers make it more difficult to turn the rotors due to mechanical imperfections and gyroscopic inertia due to the rotating tip props.
@GutpileCharlie.. yes, too too true. You say u are not an engineer, but you are spot-on—if we want a full glass of water, then a whole glass of water must come out of the jug. It's what we call a conservation law. The work-energy theorem does not lie!
I didn't question the validity of tip jets; I was commenting on what the video notes seem to say. The aluminum model will be "tip propeller powered". If by that, you mean "tip JET powered", then yes, you can avoid torque reaction. But if you mean propellors on the blades—"tip propeller powered"??—then you will still suffer torque reaction. That happens whenever you apply mechanical torque AT ALL, not just in ways that seem "direct". Your only choice is jets or counter-torque.
Ok, I understand your question better now, yes you are right but to get around that my gears are rotating a rod inside the rotor shaft and then geared to another shaft from the rotor hub to the blades
smaller, thinner blades, like those used in regular helicopters has less drag but also needs a much higher rpm than would be possible using human power. So low rpm high lift blades are the norm for human powered helicopters, but then you also have the additional drag,
This leg-press chopper is great—now we'll all remember you every time we do leg press! Also nice to see you're wearing a tie when demonstrating—keeping dress standards up. ;) But it's difficult to see how a different configuration (eg: tip-mounted props) could mitigate torque problems, if power is ultimately still transferred from non-rotating part of the system (man in leg press). However sneakily you re-distribute the inertia, you will still have to leg-press against it!
When you apply force to a shaft directly then you will get a torque against which you have to counter-torque, which in a shaft powered helicopter you'd need a counter rotor. If you power the blades through the tips, then you won't have the torque problem. There are tip jets helicopters that have no rotors.
Try to use double stroke with you legs one pedel per foot. each powers a ratchet drive. And use a simple transmission to increase rotation at least 3 revs to one stroke use bike gears.
jwbolls idea for the electric motor is a good idea, either a gasoline or electric motor would work but you need to add 150 lbs or so to equal a grown mans weight to see if the vehicle would lift off. Somewhere on a human powered helicopter website there was a study that said that a 4 blade rotor and a bicycle drive was the most efficient set up. Good Luck!
1 stroke = 1 relolution of the shaft, then you guess at 20 to 30 rpm at the end and that's not even taken the droop out of the blades, good luck but you're gonna need some bigger legs
I see a lot of workout machines claim to make working out "...easy and fun". A real workout will never be easy, but you sir have the definition of fun in your back yard. That is a leg/ab workout that will never get boring. And if you need motivation, if you stop you plummit to your death. The best kind of motivation.
on problem i see with the design so far, is that your pushing motions need to be counter balanced or you will get stability issues, looks cool though!!
But you miss the point of what it took to do things before motors and the transition to get to it. In this society it is too easy to be complacent about technology.
Good luck with this project. I have considered the "levercycle" motion for a human electric hybrid i'm designing.
You are exactly right that the human leg is the strongest limb we have and it is better used pushing a slow power stroke than simply pedaling round in circles.
I would love to see you get this project off the ground (literally)
I have an interesting concept similiar to a rubber band wind-up airplane. Why not, rather than using your strength to turn the rotor, create an aircraft that you wind up, and then to solve the problem of it falling out of the sky, create a device in which you peddle to wind it back up whileyour still in the air. In this way you can conserve your energy without having to constantly peddle 24/7. Sound Good?
Sounds like a real good plan, except that this contest forbids any use of stored power, it is expressly to be lifted by human power only, It's not really designed to be used as public transport:)
Well, you are going to have more weight on the blandes once it tries to life you which menas more for your legs to try and keep up with. Good luck though
if you alter you're body position you change the centre of gravity and a person can make himself lighter through body teqnique. You're most heavy when you stand. With giant sized wings and ultra complex gearing and gyroscopes we can easily achieve human powered flight. i Would liek nasa to work on these even though they are the space administration i no those guys are into this sort of thing. Nasa if you are listening please work on this technology
i'm sure it was about to take off at 2.25 roflol,good luck with the contest mate and you should do a video showing what other people come up with if you can that is.
Some people in older comments claim that human cannot produce enough power to lift his weight. Funny thing, I can do it every morning. And, besides of that, I can climb on ladders or stairs and lift my weight against gravity, EVEN WITH A BACKPACK.
Keep on trying, man! But maybe the rotor concept should be re-designed in general? And how about a rotor UNDER the craft (to minimize the downward flow disturbance at the pilot´s area)?
While adding weight to the prop tips gives more momentum, it also adds to the overall weight that you must lift.
TheMrBlinx 3 weeks ago
Good luck getting that thing to fly. You're gonna need it.
vistigioful 1 month ago
good flying :-)
cemkapt 3 months ago
would suck to get a cramp mid flight
jayocular 3 months ago
This is stupid. Even if anyone made a really lightweight human-powered helicopter, they could only fly for what... thirty seconds? I wouldn't waste my time on that... Maybe an airplane...
quantumcherrypopper 3 months ago
this is the lost video from dharma initiative, IT ALL BEGUN HERE XDDDDD
DAANTAELON 3 months ago
tu ses un cojon
MrRickyRc 4 months ago
You have to be The Flash to get your self off the ground!!! What will happen if you get to tire to pedal?With all that pedaling there can't be any balance! Explain!
zackcid 4 months ago
Use a battery as a starter and then once spinning pedal and when ur up in the sky the battery charges.
GenuineMW2 4 months ago
yea need to spin it about 200 times faster and you might get somewhere.
IgotGreens101 4 months ago
A good exercise bikes, but it will never get of the ground weight to power ratio.
can you imagine how fast your legs would have to move
also could do with some wd40. ha,ha.
. It will end up in the garage. with the rest of the i thought it would be a good idea at the time stuff .
coombekea 5 months ago
there is no way that thing is gonna get enough lift. take it from a person that flies. your machine you put together looks cool, and good effort and such, but no. not gonna happen.
Singnature12 5 months ago
Dont forget torque! As far as the number of blades etc etc. Look at the lift equation. What are the variables a helicopter can have to influence lift? Yes some helicopters have more blades but if you notice they are smaller than the versions with only two. There is a balance between lift and drag. I think its a great idea and concept. Keep up the ingenuity and like said before...NEVER GIVE UP!
1fun2watch 5 months ago
You need to trade off wing area for speed, Oh, and don't sneeze ... without a Helmet ?
jmvideo7 5 months ago
show another vid of you ACTUALLY FLYING
hamsterlover333 6 months ago
pretty cool I've always thought bicycling wasn't the most efficient way
Jammieg001 6 months ago
You need a system that allows you to use your arms and legs in alternating motion. That way, more muscle power is delivered to the blades. You won't have any way to control the flight so, it will have to be balanced correctly to start with.
Your biggest problem will be how to counteract the torque to the rotor! As soon as you leave the ground, your chair will spin in the opposite the direction of the rotors. You will then crash.
Do it Klimov style with counter rotating rotors.
InfiniteMushroom 6 months ago
Ahhhhhh I got a cramp lol then what
mikecat23 6 months ago
when you gave the discription you said stroke and shaft two times,...
that was a little creepy,...
next you'll be telling people how that thing makes you ass sore,.. hehehe
420ESSC 6 months ago
Pointman? (fear3)
THEoSNAPfilms 6 months ago
The creaking noise is a good sign, that means its safe. Keep on down strokin' buddy you'll get there.
Skizzokiter 6 months ago 6
A good leg workout machine :)
RealtyStudioHD 6 months ago
lol I hope you never get tired....... once u are in the air......
tonybaxter2006 7 months ago
Very interesting design. I wonder about the efficacy of the propulsion mechanism once the craft is airborne. Would it be a correct say that thrusting with your legs may throw off the balance of the craft, transferring the weight forward?
Sealy57 7 months ago
I have read the comments about humans not being able to generate enough power to get the rpms needed to achieve lift. One solution might be to hide the rotor in a smooth disc which will offer very little resistance as it builds speed. Then when you have plenty of rpms, deform the disc to expose the rotor.
oksothatdidntworkbut 7 months ago
that thig is perfect, except for one small detail....it doesn't fly
cademcnown25 7 months ago
What a muppet, there was not even enough lift generated for the rotor blades to stop sagging !
mattpreddy 7 months ago
How do u stear the thing??
jagworty 7 months ago
even under the best circumstances human powered helicopter flight is a physical impossibility.we just dont generate enough horsepower to achieve flight
philtripe 8 months ago
Keep on, Leonardo !!!! XD
Smileyflyer 8 months ago
If diarrhea sets in, you will lose compression!!! It will sound even worse!!!!
Watch out what you eat before flying!
13triki 8 months ago
LEG CRAMPS MAYDAY!
PLISKEN12 8 months ago 2
Does anyone here even know how to read? It says right in the description that this is a mockup, not a working prototype. And to efrainpalermo, I applaud you for stepping up to the challenge. Bravo!
Jakedasnake1066 8 months ago
All pumping, no flying.
azzy314159 9 months ago
why not use carbonfiber. its light, and very expensive :)
Steffmeister86 9 months ago
I would love to be your neighbor!
oisiaa 10 months ago
Dude your going to need some sort of light weight gear system, That way you wouldnt use all your energy just getting the blade up to speed. what if you used like a oneway clutch out of a bike tire then you might be able to get 2 or 3 gears to help you. I like the idea of the weights to keep inerta though. What if you put 4 or 6 blade on it as well, that might help with extra lift. Or maybe like you spin an air pump then have the blade hooked to some sort of air motor, like an impact wrench?
mcnabadl1 11 months ago 6
Actually my redesign uses a one way clutch and a set of three gears, so you're right on with your suggestions:) I had thought of using an air pump but the amount of energy needed to get enough cubic feet per minute thrust was not very efficient.
efrainpalermo 11 months ago
@efrainpalermo Yes i supose thats right, it would take alot of energy. If you dont mind me asking, what contest is this? I love the idea of human powered flight devices. Even though they have hardly any range the process of designing one sounds fun. Is this contest for only helicopters, or are there planes to? I personley love to fly. How do you plan on stable flight, do you have a tail rotor? Thanks for posting this vid, it has my brain wirling. I would love to try somthing like this.
mcnabadl1 11 months ago
This is the Sikorsky Human POwered Helicopter Contest. This one is just for helicopters but there are other human powered contests out there. Im going to use tip propellers to get away from using a tail rotor. The contest only calls for one minute of flight, about all one could do anyways, so not something for sustained flight :)
efrainpalermo 11 months ago
@efrainpalermo Cool, I might look into a plane one, do you know how fast you need to spin the rotor to become airborn? And do you know how fast you can spin it now? By human powered, Does that mean you have to manualy spinn the blades, or can you get gravity to help you? Because what if you used a hand gear with a gear reduction and cable to pick up a set of weights then let them fall to start the blades then you use your feet to matain blade speed, that way you could have a lower gear ratio.
mcnabadl1 11 months ago
@mcnabadl1 ~ Dude, when airplanes were first made they had 4 to 6 blades. Then we learned that when it comes to lift, less is more. Gradually propellers consisted of only two blades. The most efficient rotor is the Savronius Rotor that has only one blade with a counter balance. The problem is wind turbulance from the extra blades. I like your idea of gearing, though.
stopdemockery 5 months ago
fuck this is one hell of a way to loose waight if u stop u fucking plummit to the ground
devancowper 11 months ago
Don't listen to fools with no vision. Although your invention may never fly, of course you're onto something and it's a good concept so keep at it. Maybe develop a power source that delivers consistently on an earth machine first (just so no-one gets hurt) someone invented a pedal car, a push car maybe? It's powered by arms and is like winding up a spring. Check it out, maybe helpful
Mrkthl 11 months ago
youll need at least 5 times as many revolutions per stroke,,, or more...
HallPassExpired 1 year ago
what if you get tired in the air..how do you steer?...
ManCandy3456 1 year ago
The contest only calls for going straight up and then down so makes it less complicated!
efrainpalermo 1 year ago
does it fly
Awadhut20993 1 year ago
@Awadhut20993 TO ANSWER YOU'RE QUESTION ABOUHT , DOEST IT FLY. NOP IT DOESNT FLY, BECAUSE THAT GUY IS FUCKEN CRAZY, AND HE DOESN'T HAVE A JOB. BUT ALOT OF DREAMS....
fcruz1980 11 months ago
and when you stand up, u lost ur head.
di8torted 1 year ago
you could make a new version with a carbon material and if somehow you added a power conversion system using your arms as well as your feet such as a rowing slider system. you could get more push and if you take off the weight tips you have much less resistance. if you make a more stout wing system with a lighter alloy with a ring connecting the blades you could have more push for equal or less weight. not trying to be offensive. please notice this response for a later model.
zumzumfluff 1 year ago
Thanks for the suggestions. I am working on a newer model that's a very old video and was built to test my leg press power system, the frame and blades were built as props and wasn't intended for actual use:)
efrainpalermo 1 year ago
@efrainpalermo Man ive been in aviation all my working life.
It didnt even lift the weight of the blades , let alone you.
It ain't ever goina work man.
yintontiddlyipo 1 year ago
What happens if it actually does fly and one of your legs gives out? I mean, in all honesty Leonardo DaVinci had a better design. I do have to say that as a kid I thought of a similar design with bike pedals and heavy wood sheeting.. so there is noting wrong with dreaming.
gregoryaparker 1 year ago
Well for this contest all it calls for is to up 10 feet and only for one minute, so even if legs did give out not much of a drop. This video was made to show a test of my power stroke design and not how it the whole structure will be
efrainpalermo 1 year ago
@efrainpalermo TO WHO EVER YOU ARE, WHAT I THINK IS THAT YOU NEED TO GET A JOB,AND STOP USING EXCUSES FOR NOT TO FIND ONE. THANK YOU....
fcruz1980 11 months ago
It is easy enough to make a reasonable helicopter, but the power source will never be up to it! Not till we have hollow bones like the birds.....and smaller digestive systems. A little model helicopter might have a 300watt motor, well, that is what a human engine can produce! See Gossamer Condor....
SuperAviatar 1 year ago
Sorry man, cool idea, but I'd be willing to bet if you crunched numbers (device weight+your weight (forget drag even)) you wouldnt be able to generate enough HP to push yourself up
white25rs 1 year ago
Somethings are impossible to do and an humqn powered helicopter is one of them.
hibirapita 1 year ago
yeah but the "weight tips" give you more work against you that you have to push against
GreenAce92 1 year ago
I figured that out too and my newer versions don't have the tip weights
efrainpalermo 1 year ago
@efrainpalermo silly idea...! camone men.. - it never fly up..! You're "aircraft" looks like from 1900.. in the paset peoples were makeing like this - havn't no knoledge of fly forces.. Now even a child know that is to havy and peoples are to weak to make the prop rotating enough powerfull to handle the weight..
waste of time..
VictorSeedorsky 1 year ago
This has been flagged as spam show
@efrainpalermo silly idea...! camone men.. - it never fly up..! You're "aircraft" looks like from 1900.. in the pased peoples were makeing like this - havn't no knoledge of fly forces.. Now even a child know that is to havy and peoples are to weak to make the prop rotating enough powerfull to handle the weight..
waste of time..
VictorSeedorsky 1 year ago
le jour ou il va décoller faudra pas avoir une crampe!!!
stangia 1 year ago
Wow, now thats a really COOL workout machine, We all know how hot exercise can make us and those fans must really keep the user nice and cool lol. Keep trying, work or not its really entertaining and I want to see some more.
benjyboba 1 year ago
You don't necessarily need more rpm's , by using lighter longer blades you can generate more lift. To a degree it's better to have long blades spinning with lower RPM for a HPH.
nhaisma 1 year ago
Multiply your rpm's by 10 and maybe you'll actually be able to lift your bodyweight for a few seconds.
ayokay123 1 year ago
Look at the blades. they are bending down. not even creating enough lift to lift the weight of the blades. not going to get off the ground. unless your are 25hp super human. not a 1/2 hp regular human
darfarce91 1 year ago
Coooooooolll!!! I want to see u flyyyyyyyyy!!! WEEEEE!!
buuum98 1 year ago
I won't dash your dream man,however if you look at the old films of the turn of the century you'll find this ain't gonna happen,but best of luck and I hope I eat crow.
justaman6972 1 year ago
I think you need a LITTLE more speed :)
krisrydgren 1 year ago
Efrain, if you google 'Arantix bicycle' you will find out about a company that makes a carbon fiber wrapped with kevlar moutain bike that only weighs 2.7 lbs. The design is not streamlined but is open. Maybe the company would be willing to donate to build a frame for your human powered helicopter in return for the publicity for their extremely light weight frame material. One of their bicycles cost $8000. If they said yes it would be a win-win both for your dream & for their company.
TheTomLangley 1 year ago
You will have to generator enough thrust to list the total weight, get a engine to test your theorys first....
FreeEnergyNow1 1 year ago
you are very a crazy person bro!!!!
ostrovbogov 1 year ago
Pedals would definitely get more power. The guys who get their bikes up to 70 mph have the best configuration.
cdoftx 1 year ago
This is great. Keep going and let us know how you're doing!
iamdebrg 1 year ago
Thanks!
efrainpalermo 1 year ago
Great concept! But unless you can get a gear revolutuion ratio of 10:1 or better you will still be on the ground at best.
whisperingdeath308 1 year ago
yes my newer version has a better gear ration
efrainpalermo 1 year ago
Thats true, thats what machines are. Mechanical Advantage! It is very possible to make a helicopter powered by man. Not easy.
iamsam87v 1 year ago
What's the name of the contest you are (or were) building this for ? ... and where's the contest taking place at ? ... i'd like to check out the everyone's inventions ! (if it's still on-going)
Thedarkone11111 1 year ago
Hi, yes contest still ongoing, its the Sikorsky Human POwered Helicopter Contest sponsored by the American Helicopter Society
efrainpalermo 1 year ago
never gonna work bro
XtremshareGaming 1 year ago
Never say never:)
efrainpalermo 1 year ago 7
This has been flagged as spam show
Always say always
fdvalkfok9sdf8gs8df 1 year ago
i like at 1:54 when the camera person backs up like the blades are gonna fly off. But dont give up! i can see it now man, just be sure to hit me up with some schematics so i can build my own. And im totally serious i want a helicopter so bad...
parkeryoung 1 year ago
If you can get it off the ground for a few minutes at least.. then you can work on stability. maybe tether it with counter balanced braces so it can go up and not crash.
this can prove whether or not you can get lift for a reasonable amount of time without getting too tired.
I have doubts but think it is great you are proving it one way or the other.
alinsoutherncal 1 year ago
theres no way that could lift off
good work tho
n0morehate 1 year ago
the body will be worn out before it get off the ground! you have to develope gear that at least 5 times as hard!
jamjr1972 1 year ago
Pedal-Powered Plane amazing , check it out on youtube.
eddogbreath 1 year ago
Good Luck
vexviper 1 year ago
A beautiful idea but the human body falls a fair bit shy of the minimal requirements to power vertical lift for it's own weight. Now a pedal driven propeller on a sail plane could be worked with some success providing there exists an absolute perfect environment. You have to understand even when you have the fittest human on the lightest aircraft possible you are relying on the greater part of your lift from thermodynamics . Best and safest choice is still internal combustion to power flight.
freecash4udotws 1 year ago
Most definitely the human body alone cannot do it, but the test is to create a mechanical advantage to make it possible and that's where the creative, inventive thrust of this whole contest is geared towards
efrainpalermo 1 year ago
@freecash4udotws I don't know if this has been attempted previously, but is it possible to store energy in the form of a flywheel or some sort of wind-up system? It would provide a greater torque than being powered directly by a human, plus the reliability and consistency a peddler cannot achieve.
THISNAMEOWNS 1 year ago
right on
snooch1975 1 year ago
good landing :)
matryc 1 year ago
Is it really made out of wood... which is the least of the problems for this to work... but really...?
Ratboy8888 1 year ago
@Ratboy8888
This was just a wood mock up and is intended to test out my powertrain, not to fly, if you look I have a modern version on here
efrainpalermo 1 year ago
not a prayer
dhudson369 1 year ago
Too cool !
mermaidmariah 1 year ago
Nice try, good effort.
Not when, but IF you ever get it off the ground, you will start to spin and fall down !!!!
You need another rotor that will turn CCW or tail rotor !!!
In my opinion, you do not have to worry about his. You'll NEVER get it off the ground. If yor feet movement would be the best there is, every bicycle would be already built that way. Too many mistakes already in concept.
Dude, you are going the wrong way from the beginning!
BarbaShime 1 year ago 3
Cool, I am impressed that you could make the wooden copy:) I am no good at anything like that, wish I could build things like that would be great fun. Keep up the great work!
angie4josh 1 year ago
What RPM do you need to create enough lift?
SMCsanet 1 year ago
From my intricate wind tunnel tests (i.e. sticking a rotor blade section out of a moving car's window at various speeds) I calculated I would need 35-40 rpms
efrainpalermo 1 year ago
The problem is that most of the time you are not applying any force that means your input power is low. Tip weights will help smooth out your pulsed force application but will also increase disk loading. I commend your enthusiasm but I think you need to learn some physics if you really want to succeed.
littlestworkshop 1 year ago
i dont think i would fly with you
magicmike1122 1 year ago
Need gears
NotN8 1 year ago
Somehow put a spring in your pedal to increase resistance but at the same time make the backstroke of the pedal also turn the blade.
yonigga223 1 year ago
I have a little spring to return the pedal but it doesn't add anything to the backstroke, it may be possible to increase the spring back to add a little but more power
efrainpalermo 1 year ago
Hi there, just wondering if you're going to make use of your arm strength at the same time? You could make it so that as you drive your legs put you're pulling your arms back at the same time. This would give you significant more power. Consider an Olympic rower using only legs versus legs, back and arms.
Best of luck! Matthew.
angelikanavarro 1 year ago
I have thought of using arms as well, maybe helping on the backstroke like you mentioned a rower would do though it would add a little bit more complexity and weight but worth a try after I see how my initial trials go
efrainpalermo 1 year ago
nice
odellem 1 year ago
I like your passion and attempt at advancing innovation. Remember that with helicopters, they need the secondary tail chopper to balance the lift which the main propeller provides. I'm working on a self powered flying machine myself. Might have a video in a few months.
Topherpusa 1 year ago
that would get you tired really quickly, and i doubt you could fly anywhere without having to take a rest.
AnHeroDesu 1 year ago
does it fly?
theproducerspart2 1 year ago
have you thought about the weight transfer involved with pumping your legs in this fashion in flight? How are you going to counterbalance the weight of your legs/the pedal moving back and forth? It seems like this motion would change the center of gravity drastically .. making the craft unstable .... also.... how are you going to counteract the rotational force of the blades to keep the body stable in one direction? Are you going to fashion some sort of tail on this?
Airsoftaddict78 1 year ago
Collective and cyclic pitch will be required to have controlled flight and also you will want some tail rotor system to counteract the torque of the main rotor so you don't spin in a hover. Very interesting concept though!
Sidewinder52 1 year ago
This has been flagged as spam show
For more green power, see this:
tinyurl(DOT)com/2wbb23j
(loose the brackets and use a dot where it says DOT)
TheFreeElectricity 1 year ago
This clip reminds of Wright Brothers and people who initially tried and made an attempt to fly.
To lift this bird up you need a Superman ;-)
prem73 1 year ago
you need oil
crnagoraz 1 year ago 3
it looks like its going to snap at any minute
makscharip97 1 year ago
it´s a bit noisy, put oil, it will fly.
xandolucena 1 year ago
That won't fly anytime soon. My suggestion is drop the rotor 90 degrees back add wings + wheels and then it 1 would fly and 2 go slot faster. Ps a helicopter requires several things that that hasn't got and helicopters are hard to fly. Even modern computer packed ones I admire your spirit but Dont quit your dayjob
11PETE23 1 year ago
this is great but how long do you have to push this thing to get the rpms needed for liftoff. and you also need a rudder design. you would be smart to put an electrical assistance motor on the rudder and main rotors. this will make it much easier to start up and get a load off. and when it comes time for flight in the contest take it off will have developed by then. I will subscribe to you and I wish you the best of luck on the contest and mind the power weight ratio
transformerskid567 1 year ago
Im figuring it would take about 4-5 minutes to get up to lift off speed then another 3 minutes to get to ten feet (contest height). That is a good idea on using a motor to start out with.
Thanks!
efrainpalermo 1 year ago
I doubt that this machine will apply even half the force needed to lift up without additional power sources. Also, the way power is transmitted, even if you have a strong spring to pull the footboard back up and continue rotation of the blades, it still would be taking power from the initial push-stroke.
Also, having tip propellers make it more difficult to turn the rotors due to mechanical imperfections and gyroscopic inertia due to the rotating tip props.
kylemontanaro 1 year ago
@GutpileCharlie.. yes, too too true. You say u are not an engineer, but you are spot-on—if we want a full glass of water, then a whole glass of water must come out of the jug. It's what we call a conservation law. The work-energy theorem does not lie!
aboctok 1 year ago
I didn't question the validity of tip jets; I was commenting on what the video notes seem to say. The aluminum model will be "tip propeller powered". If by that, you mean "tip JET powered", then yes, you can avoid torque reaction. But if you mean propellors on the blades—"tip propeller powered"??—then you will still suffer torque reaction. That happens whenever you apply mechanical torque AT ALL, not just in ways that seem "direct". Your only choice is jets or counter-torque.
aboctok 1 year ago
Ok, I understand your question better now, yes you are right but to get around that my gears are rotating a rod inside the rotor shaft and then geared to another shaft from the rotor hub to the blades
efrainpalermo 1 year ago
All the attempts I've seen use large wide rotors. I wonder if thinner, smaller and therefore lighter rotor blades would work better?
eggaweb 1 year ago
smaller, thinner blades, like those used in regular helicopters has less drag but also needs a much higher rpm than would be possible using human power. So low rpm high lift blades are the norm for human powered helicopters, but then you also have the additional drag,
efrainpalermo 1 year ago
This leg-press chopper is great—now we'll all remember you every time we do leg press! Also nice to see you're wearing a tie when demonstrating—keeping dress standards up. ;) But it's difficult to see how a different configuration (eg: tip-mounted props) could mitigate torque problems, if power is ultimately still transferred from non-rotating part of the system (man in leg press). However sneakily you re-distribute the inertia, you will still have to leg-press against it!
aboctok 1 year ago
When you apply force to a shaft directly then you will get a torque against which you have to counter-torque, which in a shaft powered helicopter you'd need a counter rotor. If you power the blades through the tips, then you won't have the torque problem. There are tip jets helicopters that have no rotors.
efrainpalermo 1 year ago
Well fgood thing the contest only calls for going 10 feet off the ground:)
godzillaaa4 1 year ago
Try to use double stroke with you legs one pedel per foot. each powers a ratchet drive. And use a simple transmission to increase rotation at least 3 revs to one stroke use bike gears.
RebelMerc 1 year ago
jwbolls idea for the electric motor is a good idea, either a gasoline or electric motor would work but you need to add 150 lbs or so to equal a grown mans weight to see if the vehicle would lift off. Somewhere on a human powered helicopter website there was a study that said that a 4 blade rotor and a bicycle drive was the most efficient set up. Good Luck!
TheTomLangley 1 year ago
mount an electric motor to it and see how many horsepower you actually need to get it to hover, then you'll know if it's possible.
and if it is, Carbon Fibre!
have fun!
jwboll 1 year ago 11
That is a good idea...thanks:)
efrainpalermo 1 year ago
Wow, its "Barneycopter" (I calling that copter from Amiga game "UGH!"). In 80' i have the same idea, but thinking isn't the same as do it...Greetings
yog28 1 year ago
1 stroke = 1 relolution of the shaft, then you guess at 20 to 30 rpm at the end and that's not even taken the droop out of the blades, good luck but you're gonna need some bigger legs
krispyish 1 year ago
Does it have gears? Use bike gears or something.
Resolvehk14 1 year ago
you got the auto-gyro feature built in.
Excellent demo!
Xid3d 1 year ago
Thank You!
efrainpalermo 1 year ago
funniest sounds hehe :D hope yuo will do it some day! go for it!
Unrealshade 2 years ago
Yeah that model needed some WD40 :)
efrainpalermo 2 years ago
very cool can you trye to make vid of you pedaling as fast as you can on it??
dayworld26 2 years ago
I am working on a new model where I will pedal faster..keep posted for when it comes out or subscribe to get notice when I post new videos
efrainpalermo 2 years ago
Way far from flight. The mock up cant even lift the blades, let alone the frame......or man.
freakingfast1 2 years ago
I see a lot of workout machines claim to make working out "...easy and fun". A real workout will never be easy, but you sir have the definition of fun in your back yard. That is a leg/ab workout that will never get boring. And if you need motivation, if you stop you plummit to your death. The best kind of motivation.
:)
chickurken 2 years ago
Nice - but does not fly
HesseJamez 2 years ago 2
awesome effort - keep up the good work.
TheRooster602 2 years ago
Thanks, I'm renewing my efforts to win the contest this year...stay tuned:)
efrainpalermo 2 years ago
This will never work you have not enough Power
Alexander470815 2 years ago
@Alexander470815 how does man run up a stair then
datzfast 2 years ago
on problem i see with the design so far, is that your pushing motions need to be counter balanced or you will get stability issues, looks cool though!!
Deathstroke44 2 years ago
good point, can add counter balance with a sliding track to equalize the center of gravity. However additioanl weight would be an issue.
deaftodd 2 years ago
cool =)
GoToTabCollection 2 years ago
can you get lift with that ?? ( cool and insperation consept)
oddmann85 2 years ago
That was just a test model but the newest one I am working on I do hope to get lift with it
efrainpalermo 2 years ago
okay, we have motor's for a reason, this is plain dumb.
factoryXperimental 2 years ago
But you miss the point of what it took to do things before motors and the transition to get to it. In this society it is too easy to be complacent about technology.
efrainpalermo 2 years ago
Indeed; great work there btw mate!
retrohead02 2 years ago
Good luck with this project. I have considered the "levercycle" motion for a human electric hybrid i'm designing.
You are exactly right that the human leg is the strongest limb we have and it is better used pushing a slow power stroke than simply pedaling round in circles.
I would love to see you get this project off the ground (literally)
STUCASHX 2 years ago
are you done with your project?
zimmaron 2 years ago
Not yet, unfortunately I have to work a lot to keep even and either I don't have the time or money to work on it as much as I would like
efrainpalermo 2 years ago
I have an interesting concept similiar to a rubber band wind-up airplane. Why not, rather than using your strength to turn the rotor, create an aircraft that you wind up, and then to solve the problem of it falling out of the sky, create a device in which you peddle to wind it back up whileyour still in the air. In this way you can conserve your energy without having to constantly peddle 24/7. Sound Good?
LOOK4B 2 years ago
Sounds like a real good plan, except that this contest forbids any use of stored power, it is expressly to be lifted by human power only, It's not really designed to be used as public transport:)
efrainpalermo 2 years ago
They said the same to the Wright brothers......
Continue your project, fail & learn & progress..... You'll be flying at some time
Btw also think about the counterrotational craft working on the setup. It took Sykorski most of the time to solve that problem.
Good luck & Blue Skies!
TheNovaAxon 2 years ago
thanks, I'll work on that
efrainpalermo 2 years ago
These magnificient mens and their flying machines !
Go ahead and good luck with your project !
youreale 2 years ago
Thanks!
efrainpalermo 2 years ago
Well, you are going to have more weight on the blandes once it tries to life you which menas more for your legs to try and keep up with. Good luck though
coolbassman 2 years ago
if you alter you're body position you change the centre of gravity and a person can make himself lighter through body teqnique. You're most heavy when you stand. With giant sized wings and ultra complex gearing and gyroscopes we can easily achieve human powered flight. i Would liek nasa to work on these even though they are the space administration i no those guys are into this sort of thing. Nasa if you are listening please work on this technology
14CPO 2 years ago
i'm sure it was about to take off at 2.25 roflol,good luck with the contest mate and you should do a video showing what other people come up with if you can that is.
startazz 2 years ago
Thanks, most of the other past contestants already have stuff on YouTube. Thats an older video I have a newer one showing my latest prototype
efrainpalermo 2 years ago
Some people in older comments claim that human cannot produce enough power to lift his weight. Funny thing, I can do it every morning. And, besides of that, I can climb on ladders or stairs and lift my weight against gravity, EVEN WITH A BACKPACK.
Keep on trying, man! But maybe the rotor concept should be re-designed in general? And how about a rotor UNDER the craft (to minimize the downward flow disturbance at the pilot´s area)?
schumispecial 2 years ago
I am working on an updated version of the Heli..stay tuned:)
efrainpalermo 2 years ago
nice concept but man power would not be enough to hover. this concept can work well on a seabike.
coskuarsiray 2 years ago
fail make it better
qunniq 2 years ago