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Yumi is the japanese term for longbow. The samurai were very skilled in the art of kyūdō, or Japanese archery.

Components Edit

The yumi is most commonly made out of laminating bamboo, wood, and leather. The techniques for creating the yumi hasn't changed at all.

Shape Edit

The yumi was created for use in mounted combat, where the wielder could easily move the bow for different targets. The grip is positioned at about one-third the distance from the lower tip of the bow with the lower and upper curves of the bow different. The shape is also for kneeling while shooting.

String Edit

The string (tsuru) of the bow is traditionally made of hemp in the time of samurai. Now most string for the yumi is made up of kevlar, which will last longer.The strings are not replaced until they break. This is healthy for the yumi, because this results in the yumi flexing.

Bow Lengths Edit

Height of Archer Arrow Length Suggested Bow Length
< 150 cm < 85 cm Sansun-dsume (212 cm)
150 - 165 cm 85 - 90 cm Namisun (221 cm)
165 - 180 cm 90 - 100 cm Nisun-nobi (227 cm)
180 - 195 cm 100 - 105 cm Yonsun-nobi (233 cm)
195-205 cm 105 - 110 cm Rokusun-nobi (239 cm)
> 205 cm > 110 cm Hassun-nobi (245 cm)


History of the Yumi Edit

Time Period Type of Bow Bow Formation
Prehistoric Maruki Single piece of wood
c.800-900 AD Fusetake Wood with bamboo front
c.1100 AD Sanmaiuchi Wood with bamboo front and back
c.1300-1400 Shihochiku Wood surrounded with bamboo
c.1550 Sanbonhigo (Higoyumi) Three-piece bamboo laminate core, wooden sides, bamboo front and back
c.1600 Yohonhigo (Higoyumi) Four-piece bamboo laminate core, wooden sides, bamboo front and back
c.1650 Gohonhigo (Higoyumi) Five-piece bamboo (or bamboo and wood) laminate core, wooden sides, bamboo front and back
c.1971-Modern times Glass fiber Wooden laminate core, FRP front and back


References Edit

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