The Zephyr - joy at ROG free flight
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- เผยแพร่เมื่อ 12 ก.ย. 2024
- Three same R.O.G. (Rise Off the Ground) rubber powered free flight models covered in different butterfly colors. Span 15"/38cm.
Designed in 1936 by Abe Bergman. Plan drawn in 1979 by Al Patterson.
The plan can be found at outerzone : outerzone.co.u...
Different than in the plan:
All round formers are laminated from 0.8mm Balsa strips.
The fuselage is reinforced with bamboo at the top and bottom.
The balsa propellers are carved according the plan but covered with fiberglass fabric for reinforcement.
On longer flights with longer rubber band, the risk of flying away is high, because no DT ( Dethermaliser).
See in my first video of the Zephyr : • Zephyr (1936) by Abe B...
Music : TH-cam Studio : Just Stay by Aakash Gandhi
More information about rubber band powered model aircraft in Switzerland at www.gummimotor.ch
amazing
😁
Outerzone bought me here, it's a wonderful hobby and brilliant video.
Thank you.
Autentico aeromodellismo.... Semplicità di progetto, leggerezza, bellezza. Complimenti da Firenze. Molto bello!
Grazie mille!
Great video! You inspired me to build one and it flies excellent. I used a single loop of 3/16” and was able to get 45 seconds with 800 winds.
Great. That's how it should be. This model should be built and flown! Thanks for the comment.
Now I have seen your latest work from last winter. Your copters I find so great...and of course the butterfly, which is still missing in my collection! Unfortunately you have disabled the comment function. So I write here and want to thank you for sharing.
Thanks for the comments! I also learned that when you mark your video Safe for Kids, TH-cam automatically turns off the comments function.
@@brookelinford1910 Isn't it so that youtube disables the comment function if the video is made specifically FOR children? Our hobby is probably more popular from the age of 40....
@@rubberfly I thought the setting meant that it was safe for children. Another lesson learned! Thanks!
information. at 2:17, this design results in a model that has a 'confused' dom. distribution of mass.
such pure joy
Beautiful model and video. Thanks for shooting and sharing.
Thank you. Greetings from Switzerland.
L78, i like youre presentasi
Beautiful!!
Thanks very much. I was quite surprised to see that the prop rotates in the other direction after the rubber has run out. By the way, yesterday I got my first copy of the Flying Aces Club News ... Yeah!
@@rubberfly Sweet! It's a great publication. I'll try to get a plan or 2 in there in the next year, and maybe take some inspiration from your channel in my upcoming building projects.
Nice!!!!!!!!
Mantap om 😀❤️🙏🔥❤️👍🏼👍🏼👍🏼
Nice flight
Lovely!
How do you determine what size of the propeller to use?
On this plan is mentioned the size of the balsa block for carving. As a rule, I like rather large props.
@@rubberfly The bigger prop doesn't cause too much torque for this plane I see.
:50 shows the prop hub. What is the diameter of the prop shaft and what is used for the bushing through the prop? My Cloud Tramp uses the specified 1/32" diameter prop shaft and I have 1/16" brass tube with 1/32" inside diameter through the prop. The CT has an 8" prop. The prop shaft keeps getting bent. It can be bent back, more or less, but I am using this plane to test propellers and precise angles are important. I am thinking of using a larger diameter wire for the shaft, but then what do I do about the bushings? Can they be bored out or do I need to replace them with something entirely different. There is no standard size brass tubing in the inside diameters I am considering.
I remember seeing this plane a long time ago, maybe in the Model Builder, but I think it might have been in a historical book. I was amused by the wing plan form. I didn't see the length of the motor. I infer from the cross section and the weight that it is about 11" (27 cm) long. According to my rule of thumb for turns, the motor would have a capacity of 1,021 turns. You might be able to fly it on a longer, thinner motor with more turns and longer flights.
The prop Shaft
has 1mm diameter. I think that's a lot more solid than 1/32 ". The Zephyr also has an 8 inch prop, but is probably lighter than a CT. I drill the brass tube to the desired diameter, in retrospect this should be problematic because of the heat development. I found the model on outerzone while looking for something butterfly stitch. I chose the rubber in the video for short to start off the table well. A short flight for it with three similar models seems more attractive to me. With a longer rubber band it was flown for about two minutes, but that is difficult to film given the size.
@@rubberfly Thanks. I will try drilling the brass tube for 0.039" wire. This will be tricky, since the tube is already in the balsa props. The CT weighs 22 grams empty with 7 grams of rubber. It has a span of 22". I have got five minute flights out of it. But it gets so high up it would be nearly invisible in video. For shorter flights, I would put fewer turns in the motor.
beautiful model by the way what rubber are you using when i used 2 strands of 3/32 and the torque was to high when wound to about 350.
During the flights in the video I needed a loop of 10/64 "(4mm) FAI rubber and about 350 turns to be able to start safely from the table.