Synchrogyro - RC twin rotor autogyro
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- Опубликовано: 27 сен 2024
- My RC synchrogyro design.
Engine: Enya 40 prop 11x5
Weight: 1900 grs (67 ozs)
Rotor (s) diameter: 130 cm (51,2 ")
RC controls: rudder, elevator & throttle.
The synchro gears were made by a friend of a RC club in Murcia (team ARCM)
It was my friend Georges Chaulet (France) who first designed, built and flew RC autogyros with synchronized rotors. He called them 'Synchrogyres'.
Ahora ya entiendo muy bien el auto-giro, genial vídeo!!!!
I have flown a lot of single and dual rotor autogyros ( one rotor on the left side and on on the right side) I have to say that was very impressive!!!
Thank you !!
Very cool. This intermeshing rotor wing is the gyroplane equivalent of the powered rotor Karman Helicopters. Just awesome to see it applied onto an RC gyroplane. 👍🏼
Wow, that's super neat. Congratulations on such a unique model!!
Thanks Gustavo!!
Congratulations on that flight. A model rarely seen in the forums and that flies really well. Perhaps too windy but it behaves very well.
Thanks!!
Excellent! I was just thinking of designing something like this, did an internet search and here it is. Well done, Juan de la Cierva would be proud. Was thinking of some ideas for pitch and roll control without a collective or cyclic.
Thanks for your comment!
There is a plan available for a model called Als Gyro....via Sarik hobbies. Slightly different construction
El prerrotador no tiene precio,!
I have been interested in gyroplanes for a while, but I’ve never seen this twin rotor configuration. It makes so much sense! It seems very stable and efficient. Are you the first to do this?
I also love pre rotate system!
No. Like I said in the text, french modeler Georges Chaulet was the first to build and fly a rc synchrogyro.
Superb !!!
Thanks!!
*_SWEET._*
Awesome ❤
this is interesting video also, the tanden rotor. youtube: Piasecki HUP tandem autogyro in flight
Twin rotor = no autoratation, yes?
The pre-rotator system was a clever idea. I wonder if splitting the elevators into elevons would give more precise roll control?
I don’ t know. Rudder & elevator are effective enough.
very nice, did it fly ok?
muy original. la cabeza con piñones esta hecha en 3d?
Gracias Marco. Si, está hecha con impresora 3D.
What is the advantage of the twin rotors? More lift with smaller rotor blades?
I was not thinking of any advantage. It´s been a modelling challenge for me. The counter-rotating rotors can be rigid (no flapping hinges) and no rotor direct control is needed (just conventional rudder & elevator).
IT avoids the tendency to turn over one side this kind of vehicle has during take off. Congratulations
Very Cool! Do you know what is the angle between the gears?
Thanks John. The angle between the gears is 25 deg.
Great how do you think it different from airplane and helicopter!!
rotor diameter can be smaller how much?
Yes, it could be 10 or 12 cm smaller; naturally, in that case, the model would fly a bit faster.
Nice model, good video. I have never seen a gyrocopter with interleaving rotors.
Two things I do want to know:
1st: the rotors where spinning before the plane was going fast, does it has a drive for the rotor or a jump-start device ?
2nd: I never saw a right turn, was there a problem?
ps.:
1:10 winding up the not so powerful "jump-start device"
1. One of the rotor shafts has a pulley. A 4-meter cord unwinds, spinning up the rotors very fast. 2. On that flight I felt more comfortable turning to the left. No problem for the model turning right.
I always wanted to build a Benson from plans and fly it Gyrocopter always wanted to build a Benson from plans and fly it Gyrocopters are amazing. I like the modern ones but too much for me to buy. Never thought about flying an RC one I do fly RC airplanes and helicopters pters are amazing. I like the modern ones but too much for me to buy. Never thought about flying an RC one I do fly RC airplanes and helicopters.
Hi Emilio. I am building the DC Gyro that was published in 2018. I have 2 questions. What size 4-stroke can I use? I have two 4-strokes. FS-30 and Saito 40. Also can the DC Gyro fly with fixed head and add rudder and elevator controls? Thank you,
My DC Gyro design was published in RCModeler magazine in 1998. Its engine is a .25 2-stroke. A .30 4-stroke should work OK. And no, the DC Gyro cannot fly with a fixed head and rudder/elev controls, unless you add a small wing with ailerons or a small wing with upturned tips (dihedral angle).
@@emiliocabezas3565 Emilio, to be clear, when I say fixed head, I am speaking about no servo control. I will still use flapping head so the advancing blade can climb without autogyro rolling over. Your DC Gyro fly in level flight without small wing. This is because you have a flapping head. If I keep flapping head, can I use only just rudder for turn and elevator for climb ?
I thing the aircraft has to be able to bank in order to turn?
Wahid, I had understood you in the first place. Of course, a fixed head means no servo control for tilting the rotor. As you know, the flapping head only prevents the model from rolling over due to dissymetry of lift between the advancing and retreating blades. With a fixed head, perfectly trimmed autogyro (the rotor head shaft, though fixed, has always a small amount of tilt for level flight, in pitch and roll), you would be able to control it by means of rudder and elevator (able to bank in order to turn, and elevator for climb) for a short while, but you would be unable to recover from a steep bank if the gyro runs into it (due to turbulence or overcontrol); hence the need for ailerons or a wing with upturned tips which allows control with the rudder, due to dihedral effect, like an aeroplane without ailerons.
Awesome model. Love the intermeshing rotors and clever pre-rotator system. One question if I could; having flown a full scale gyrocpter similar to Benson design, I wonder if it is preferred to have direct gimbal tilting rotor for control as these homebuilt autogyros use or the fixed position rotor assembly with conventional deflecting control surfaces as your autogyro uses. It seems like the gimbal type head would be more responsive but I am not engineer, just speculation.
Thanks for your comments. I have flown a full sized gyrocopter too, namely the spanish ELA 07. Also, I have built and flown many direct control (pitch & roll) single rotor RC autogyros. The direct gimbal tilting rotor is better, but for such an unorthodox model as the Synchrogyro, I preferred the conventional controls, just like the French modeler G. Chaulet (who was the first to build and fly one) did.
Tilting head RC Synchro-gyros have been built and flown. Look for "Synchro autogyro" and "Wood RC gyrocopter Cerberus flight" in youtube. The former has pitch & roll; the latter, roll only.
@@emiliocabezas3565 Thank you for response sir. I would like to duplicate your design as flown in video. Is it possible to find plans for this design, particularly the gears as they would be the most difficult item to duplicate? Maybe they can be 3d printed using existing stl file?
Sorry, I don´t usually draw full size plans of my designs, I make 1:10 or 1:5 scale, simple sketches. As for the gears, like I say in the text, they were made by a friend who can operate a 3-D printer. I don´t know if he can, or is willing to, provide a file for duplicating them, but I may ask. If you are interested in the sketches (I´ll have to draw some clean ones) and general info on the model, give me an e-mail address and I will send them when I can find time to do it.
😎👍👍
👍
Чудово.
อ ชัวริภัยจำสีชนพูคำสัน
can u send to me the model 3d
Sorry, I have no plans, no 3D file.
Что это "нагордили"??
Great...thats eliminate the side stall?
Thanks. The rotors being rigid and counter- rotating, any tendency to fall over sideways is cancelled.
if the rotor is powered, maybe it could be VTOL
I think the rotor isn't powered, just it has gears to synchronize and a string to easy start the rotation when it is pulled out.
Hi. Love your gyro! I built and flew a full sized gyro for many years., now modelling. I have started building a synchro model and have the 3d printed gearbox well under way. I see your reply to a comment that the blades are rigidly mounted. Does that mean there is no provision for blade flapping at all, or have you attached them so they can rise and fall within limits as they advance and retreat? If so, do you have any details please? Thank you in advance!
Hi. Thanks for your comments. I confirm that the blades are rigidly mounted. The rotors being counter-rotating, there is no need for blade flapping. The blades don’ t rise and fall at all. Good luck with your Sinchro!
Thanks so much for replying. From the video I thought the blue pieces were sift and that I could see a metal plate between the blade bolts? Are the mounting flanges 3D printed? If so, are the metal plates for strength to stop them pulling apart?
Sorry. "sift" should be "soft"...
The blue pieces are hard plastic. There is no metal plate between the bolts; in fact it’ s a thin plastic plate. Both are unnecessary; they are there because I used two old flapping heads a friend gave to me. I made all this rigid by fitting wide washers on the bolts. Forget about these parts and make two simple rigid rotor heads. That’s all you need.
@@emiliocabezas3565 Aha - Mystery solved! Thanks again for replying. I have made (and wrecked!) many blades for an own-design pusher gyro model that I almost have flying so I would use similar blades for the synchro. They're an SG6042 airfoil which is not symmetrical so I would need left and right versions but that's very easy to do. One more question: are your blade mountings printed plastic or made of metal? Printed is easy for me but I could also use metal or wood.. My gearbox has come out well. It looks different from yours but is mechanically the same and I had fun designing and making it. I'm from New Zealand - it's nice to be able to learn from someone on the opposite side of the world, so thanks again.
Felicidades por ésta maravilla
2cnd time see the video. Its a fling blender.
Beautiful 😍, Awesome 👌 👏 Amazing 👌 Fantastic..Truly every Aeromodelling enthusiasts loved it..
Many thanks to all for your kind comments!
cabrito louco >>>
Nice. 👍
Lo felicito. Excelente trabajo!!!!!
Gracias Carmelo
This reminds me of the K-MAX helicopter. Very interesting design.