Lure Head 3D

J7W1 Shinden Restoration 3D Design Tips

Archive for December, 2007

The Future’s still Long

Posted by kikakuya on December 31, 2007

Some requirements have been defined from the mapping test of the front wings last time. The degree of bump of lines and rivets were got. Since the detailed manufacture standard of the front wings of the system is not known, proper value becomes evaluation by appearance. The above figure is traced from a drawing. The following picture is the mapping result of the illustration for Mapping. The mapping test of a vertical tail and the body will be verified next time. The undersurface of a wing is the following next. The future is still long.



Japanese is here.

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Posted by kikakuya on December 28, 2007

When mapping of a rivet was performed last time, it overlooked that an elevator was two-sheet structure. An elevator hinge seems to be in the line by the side of a front wings front tip (center side) in the photograph of the system. On the other hand, the slit between an elevator and front wings (here must be a hinge) is shown in the upper surface figure of a sketch at the trailing edge side. If saying, i.e., an elevator, thinks that it is two-sheet composition like a flap, a photograph makes sense. Then, let’s change strategy. As Tips of mapping, in order to increase the visibility of an elevator, the picture of the high contrast which improves the piece of a stencil line is required. As a correcting point, the dent degree of the rivet was lowered and the position was set more close to the joint of a griddle.



Japanese is here.

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Mapping Rivet

Posted by kikakuya on December 26, 2007


Christmas night has passed in Japan and next is New Year. Let’s start next work, since a leeway of the time was given. First of all, let’s start with the mapping of front wings. The layout of a rivet and a griddle referred to the sketch which was got from the Europe site. The number and interval of a rivet are traced from a drawing. The data for bump and stencil which makes the picture for rivet and line is created by gray scale data.


If a rendering is carried out, a line and a rivet portion will be dented a little, and an elevator portion will be separated. The curve and balancer for a wings end are still under processing. Japanese is here.

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Posted by kikakuya on December 23, 2007

The cover of main gear was corrected. The whole was made thin and one more sheet was put on the back. It has dual structure from the photograph of the system. It seems that in addition, something is between the cover and the main axis although it is not discriminable in wiring or a pipe in fact. Since an axis and the junction of a cover are also indistinct, this omits. Since the antenna has not attached at the time of the restoration around 1946, it was omitted now. The fabrication which remains are as follows about. Installation of elaboration of the storing space of main gear to the wing undersurface, the storing space of a nose gear, the cowling of the circumference of an inspiratory port, the inspiratory port behind a canopy and 30mm machine gun 4 gate of front nose etc. The fabrication in this year is end. The above new fabrication will be first work early next year. Anyhow, Merry Christmas and A Happy New Year!



Japanese is here.

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Front and Back

Posted by kikakuya on December 18, 2007



They are the front and the back. A rendering should be carried out for the check of the future. It is necessary to use a photograph and a drawing and to check details. It is because an unknown drawing may have many mistakes. Not all are projected although the photograph is projecting truth. Moreover, there may also be an error of the interpretation when carrying out 3D fabrication. The restoration work is a very difficult subject. What should be trusted? In The Garber Facility, various bodies have been restored over ten years. Truth is beyond for 70 years. Although the talk changes, the document of the Nanjin Massacre was aired on TV in Japan today. About the fault war committed 70 years ago, the Japanese soldiers of those days who now became an old man are beginning to tell the fact. The Japanese government does not accept this slaughter formally yet. By accepting the historical fact with those old men, we must get big power to prevent. I am always pained by this antimony of war through restoration of the beautiful war tool called J7W1. It is self-question answering itself.

Japanese is here.

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The Growth

Posted by kikakuya on December 16, 2007

Main gear was completed last time. Main legs were joined to the body today. The prototype of J7W1 was completed at last. However, a surface detail is still future work. It took about five months to create so far. Growth always has room for improvement.



This photograph is the prototype of J7W1 Shinden being restored in 1946 by direction of GHQ.

Japanese is here.

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Step Completion

Posted by kikakuya on December 14, 2007

mgearkan3.gifFabrication of the main gear was finished. This work is done based on some collected photographs and drawings. Fine wiring and metal fittings are gradually attached by addition. The frame grasping a main wheel is one sleeve type. As long as a photograph is seen, a frame is visible to pipe-like structure (there is a slot which made the pipe unite on appearance). “Path Extrude” is best way for this frame. This method pushes out the form of a pipe section along with the line of sleeve(photograph bottom left). Now, this is attached to the axis of a main wheel. The structure of an axis is the same as a front wheel. However, the hinge of a buffer is attached to a front side. The cover was traced from the body side view. Since the length of an axis and the radius are quite larger than the numerical value of a front wheel, the ratio of each part is re-calculated from data. In order that the upper end and the arm for drawing in of the main leg might not have data, they were surmised that it was probably such a structure theoretically.





Japanese is here.

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J7W1 in Rumania

Posted by kikakuya on December 10, 2007

manup1.gifShinden was discovered in Rumania. The precious data which were not able to be found in Japan were discovered. It is the detailed illustration and modeling manual of Shinden written by Mr. Shigeru Nonaka. He is famous as an author of the literature about the Japanese fighter at the time of World War ll. Since it is a photograph of high resolving, they are very useful data for me. Please refer to Lure head Japan for details.

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Posted by kikakuya on December 8, 2007

stencil.gifbamp2.gifThe Left figure like a “Japanese family crest” is a mapping picture given to the side of a rim. The left picture is mapped in the both-sides side of a rim, and a black portion is made transparent. If this processing is carried out, a window will open to the rim side at the time of a rendering. The direction with right gradation is a mapping picture for giving special effects further on it. A deep-colored place is dented strongly and a thin place is the processing which gives a dent weakly. Although this portion may not be visible,the result in which it is better to be scrupulous is induced.


tire2.gifThe left is result of the rendering.

Japanese is here.

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That’s the light of Paris!

Posted by kikakuya on December 8, 2007

The work of this week is creation of a main wheel. From the scale of the photograph and the drawing, the rotation material (section) is made so that it may be usual. A main wheel is about 1.5 times the size of a front wheel. The diameter can be taken out from the ratio of a front wheel. The radius of a rim is drawn after a diameter is decided. Finally, the window of the side is mapped.

3sozai2.gifThe left figures are a tire, an inner wall of a rim, an outer wall of an axis, and a rim. They are finished setting up on the same axle.
The side of the rim of a main wheel has a swelling larger than the side of the rim of a front wheel. Although it is having felt at the time of front wheel creation, compared with the present rim, a design concept is clearly different. Although it is a digression, the movie of Atlantic Ocean nonstop crossing of Lindbergh which I saw at my chilhood was remembered. An English title is the “Spirit of St. Louis.” Japanese title is “My wing! That’s the light of Paris!”,if it translates literally. I remembered that the rim of the main wheel of Ryan NYP was a form just like a pot lid. Since then, When I look at an airplane, I came to look at a wheel first always.

Japanese is here.

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Wonderful Leg

Posted by kikakuya on December 1, 2007

Next work is to build up the main gear. This week is much busy for me. The main gear will be for next week. However,some reference data was prepared. The following is a material for fabrication. As expected, portions, such as storeing equipment into the main wing, are not clear. Making up imaginative power and power of reasoning is expected. An axle spreads for outside on the 4th picture. Is it because it is a wide angle photograph? But the vertical tail is reflected straightly. There are many check matters. The 8th drawing is reference, although it is not adopted.









Japanese is here.

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