![]() ![]() Black locust is very stiff and strong, but less elastic. Yew is lighter, more elastic, softer (dents easily), and less stiff, but very springy. Some woods will make many different styles. ![]() When making wood bows, we prefer to adjust the design to the wood, making a bow style that fits the material best. As I mentioned in another post, some woods are more elastic than others, some are tougher, some are stronger, and some are stiffer. Remember er that the traditional Yumi is a war-bow of high draw weight and long draw length, and meant to be shot with a certain style and form. With the rights stave, I'm sure a skilled bowyer could copy the shape and tiller of a Yumi bow by heat and forced flexion. A yew CORE, between the back and belly bamboo, might work very well, but I don't know. It might be very fat at the grip, for instance. Yew, for instance, is much LESS stiff, and MORE elastic than bamboo, especially the pre-reflexed and recurved, laminated bamboo of the Yumi. ![]() just remember that changes will be made to the design to accommodate changes in the materials. ![]() However, it is possible to make a Yumi style with other woods, etc. A major change in the materials more or less necessitates a major redesign of the style. That's not how it works, in the same way a Mongol or Manchu bow would not be improved by replacing the sinew back with bamboo, or slapping recurves on an English longbow. Yew is great stuff, but it isn't magical. The Yumi was essentially optimized for its uses, shooting style, and historical context, and would not be much improved simply by making it of yew or any other material instead. The whole thing was finely fitted, glued, and clamped, and the bow was barely adjusted after removal from the clamps/form. There is a back and belly lamination, and the center core is multiple thin strips of bamboo glued in a stack then turned on edge between the back and belly strips, "IIII" like that. It is made of laminated bamboo and wood, usually Japanese mulberry. This item will be released at a future date.The Yumi design was used for centuries during a time of nearly constant and continual war, proving itself effective not only against other Japanese warriors, but against Chinese, Korean, and Mongol invaders This fee will be deducted from the final price. A perfectly uniform pole has nodes at 1/4 and 3/4 of the way from the ends, or 1/2 if held taut at the ends – these positions will change significantly with the shape and consistency of the bow material.Ī $50 pre-order fee is required to guaranteed the purchase. The hand holding the yumi may also experience less vibration due to the grip being on a vibration node of the bow. In case the bow is made from a single piece of wood, its modulus of elasticity is different between the part taken from the treetop side and the other side. Yet another explanation is the characteristics of the wood from a time before laminating techniques. Others claim that asymmetry was needed to enable shooting from a kneeling position. Some believe it was designed for use on a horse, where the yumi could be moved from one side of the horse to the other with ease, however, there is evidence that the asymmetrical shape predates its use on horseback. Several hypotheses have been offered for this asymmetric shape. The Y umi is asymmetric According to the All Nippon Kyudo Federation, the grip (nigiri) has to be positioned at about two-thirds of the distance from the upper tip. They are traditionally made by laminating bamboo wood and leather, using techniques that have not changed for centuries, although some archers (particularly beginners) may use a synthetic yumi. The Y umi is exceptionally tall, standing over two meters, and typically surpasses the height of the archer. The yumi was an important weapon of the samurai warrior during the feudal period of Japan. As used in English, yumi refers more specifically to traditional Japanese asymmetrical bows and includes the longer daikyū and the shorter hankyū used in the practice of kyūdō and kyūjutsu or Japanese archery. ![]()
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