KFM-4: Easy wing to get you Flying
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- Опубликовано: 20 авг 2024
- Welcome back subscribers and new viewers to the RC Plane Addict, a place where I get to share my passion and addiction for flying RC Planes.
In this video I show you how to make a simple wing as a replacement, or next level wing for your aircraft using easy to find and very cheap parts. If you have a few hours to spare and are dying to go flying then give this wing a try. It is amazing!
Links:
KFM Airfoils: • How to - KFm Airfoils
KFM airflow visuals: • Airflow Visualization ...
I am so pleased that you found the KFm4 wing so easy to build and fly. I developed this concept from a paper airplane back in 1964. Today it is used all around the world in radio controlled aircraft.
Mr Kline. I am honered that you visited my channel and was able to see your design in action. It really is an amazing design and I hope you do more projects with it this winter while waiting for the flying season to return. Cheers.
Mr. Kline, I am very intrigued by your airfoil and hope to try it out soon! It's like a bumblebee; aerodynamically it shouldn't work, but it does anyway! And very well too. To start with, I'm thinking of modding a Guillows rubber band plane and replacing the stock flat balsa wing with a custom KFM wing (possibly a KFM-3).
@@gabrielbennett5162 here is a video that shows the various characteristics of the KFm concept. The KFm3 is a heavy lifter and the KFm4 is a speed wing. The KFm concept does require thrust to work properly. The vortex is then trapped in a pocket behind the step which prevents stalling and it is extremely stable because the vortexes want to always equalize the air pressure. Have fun… ruclips.net/video/wHOCFrsRGig/видео.html
@@TheDickeroo thank you, Mr. Kline! It's the KFM-3's heavy lift that interests me. Someone used it on a hand-thrown "chuck glider" with impressive results.
ruclips.net/video/_hTWFXPhjsE/видео.html
I have also used that wing as a replacement for the Eflite Apprentice. It worked like a charm, and increased performance too.
Your video on the KF airfoil has just revised my entire build philosophy.
Build/cut the flat shape and sweep (or curves?) of the wing you want, then layer the leading edges with more cut/folded foam and a spar, then add layers in the middle for a fuselage.
Off to buy foamboard.
Go for it. Let me know how it goes!
Wonderful
Thank you
Just a little comment on plugging in your battery DO NOT GET YOUR HANDS anywhere near that prop, even with the transmitter turned off,as bad things can still happen. I always test mine with the prop off ......otherwise GREAT TUTORIAL !!
Agreed.
Thank you. Very informative. I built the FT Simple Cub and am flying it with flaperons but would prefer a wing with separate ailerons and flaps. Might just use this wing design with a bit longer wing span.
do you have a video up showing you flying with this wing. I'd really like to see your FT Cub in the air with the wing you made in this video.
Oops! Just found it on your channel.
Bill, thanks for checking out this video. To tell the truth, after testing the wing, I feel that this plane is by nature not acrobatic, no mater the wing. The KFM-4 did improve the speed, but if you wanted a nice slow flight I would probably go with a different version like the KFM-3, high lift, and pass on the flaps, or flaperon setting. It is always nice to have foam board to experiment with. Let me know what you decide to do.
las puntas se corta una y con el molde de la primera se corta la segunda punta de ala así quedan idénticas acá quedaron diferentes
Thanks for checking out the vid. The two wings tested were different. The wing I was testing was the KFM-4 wing, and the original wing that was made with the fuselage is an Armin Wing. Let me know if you have any questions.
@@RCPlaneAddict Hi there. I was telling you about the wingtips and the marginal edges. From the wing that you cut that has different daldo that you do not cut it with a mold so that the two marginals come out identical .. Didn't it affect the flight path? ... Also very good videos greetings from Argentina La Pampa.
@@giomenpc honestly, I did not see a difference. She flew great!
@@RCPlaneAddictto perfect, well thank you very much for sharing your videos a hug from Argentina.
Nice.... when will you test out ur new wing?
Already have! the video will post in a few weeks. Its a crazy one!
Why not going for hotwire cut wings very easy and more durable
Two good reasons, I don’t have a hot wire, and I am not sure you can hot wire cut Foam board, but I could be wrong about that.