Primitive Archer

Main Discussion Area => Bows => Topic started by: dady on March 13, 2010, 03:17:20 pm

Title: Yumi bow
Post by: dady on March 13, 2010, 03:17:20 pm: Hi everyone, this is my last bow i made, it's been a wile since i start looking for materials, specialy bamboo. The entire bow it's made with bamboo, 6 stripes for the core, back and belly.
gluing the core
(http://lh6.ggpht.com/_GLEW7B9T9vY/S5QQK96-lKI/AAAAAAAADyo/0P0LYSOFA7Y/s800/Dady_143.jpg)
6 bamboo stripes
(http://lh4.ggpht.com/_GLEW7B9T9vY/S5QQL0Y871I/AAAAAAAADy4/afEDP60HWQ4/s800/Dady_163.jpg)
gluing the bow
(http://lh5.ggpht.com/_GLEW7B9T9vY/S5QQNRtLGAI/AAAAAAAADzE/-_3KXJtw4o8/s800/DSC05673.JPG)
the result:
(http://lh5.ggpht.com/_GLEW7B9T9vY/S5vFC7IWaWI/AAAAAAAAD4M/574-JUFmY7w/s800/DSC05723.JPG)
(http://lh3.ggpht.com/_GLEW7B9T9vY/S5vFEHyD2LI/AAAAAAAAD4U/c0QwYalVMr8/s800/DSC05724.JPG)
(http://lh4.ggpht.com/_GLEW7B9T9vY/S5vFE0XhNCI/AAAAAAAAD4Y/4Yme5jLdRmc/s800/DSC05727.JPG)
(http://lh4.ggpht.com/_GLEW7B9T9vY/S5vFFrO6prI/AAAAAAAAD4c/cfN-Fh2TAAs/s800/DSC05729.JPG)
(http://lh4.ggpht.com/_GLEW7B9T9vY/S5vFH51NXYI/AAAAAAAAD4o/5FKnznCX6cY/s800/DSC05735.JPG)
(http://lh5.ggpht.com/_GLEW7B9T9vY/S5vFIjCrnUI/AAAAAAAAD4s/kS0LVFncW64/s800/DSC05736.JPG)
and fulldraw
(http://lh3.ggpht.com/_GLEW7B9T9vY/S5vFKdVWUjI/AAAAAAAAD40/2eRQLK_zDm8/s800/DSC05746.JPG)
Title: Re: Yumi bow
Post by: Pat B on March 13, 2010, 03:24:42 pm: Cool Yumi bow! Why do you have such thick tip underlays. Seems that would add excessive tip weight.
Title: Re: Yumi bow
Post by: mullet on March 13, 2010, 03:25:15 pm: Look's good, hows it shoot. And what weight is it?
Title: Re: Yumi bow
Post by: dady on March 13, 2010, 03:37:37 pm: @Pat B: the wood i used for syahs is very light, it's lighter than bamboo.

@mullet: shoots very well, i just test it in 2-3 meters, here it's snowing now so i have to wait till i can shoot at a normal distance. and has like 17kg I think, I'll measure it andl post the weight.
Title: Re: Yumi bow
Post by: RyanY on March 13, 2010, 04:14:57 pm: That is wicked sweet. Great job. How did you find out how to make it?
Title: Re: Yumi bow
Post by: Aries on March 13, 2010, 07:47:22 pm: Very impressive :o I love your glue up set up too btw lol Ty
Title: Re: Yumi bow
Post by: Dane on March 13, 2010, 08:24:43 pm: That is a very impressive bow. I dont know much about Yumis, but want to learn more. Can you give us some details about how you designed and built it?

Dane
Title: Re: Yumi bow
Post by: goearnhardt on March 13, 2010, 10:36:22 pm: great looking bow,,nice workmanship,,,17kg ???
Title: Re: Yumi bow
Post by: recurve shooter on March 13, 2010, 10:44:20 pm: ive always been impressed by these bows. nice job.
Title: Re: Yumi bow
Post by: HatchA on March 13, 2010, 10:53:29 pm: Stunning bow, Dady. Well done.
Title: Re: Yumi bow
Post by: aznboi3644 on March 13, 2010, 11:01:53 pm: Quote from: goearnhardt on March 13, 2010, 10:36:22 pm
great looking bow,,nice workmanship,,,17kg ???

about 37.5lb
Title: Re: Yumi bow
Post by: Scowler on March 14, 2010, 01:30:35 pm: Very cool bow.
Title: Re: Yumi bow
Post by: OldBow on March 14, 2010, 02:31:05 pm: Very nice - great craftsmanship and a serious contender for March Laminate Bow of the Month fun.
Title: Re: Yumi bow
Post by: dady on March 14, 2010, 03:26:15 pm: thanks guys! all info about making a yumi came from google and pictures with the bow (unstring, string and fulldraw)
those are some other pictures with materials and steps making the bow:

the bamboo
(http://lh3.ggpht.com/_GLEW7B9T9vY/S5QQJgdQsmI/AAAAAAAADyc/dm3zwybx2QI/s800/Dady_128.jpg)
(http://lh6.ggpht.com/_GLEW7B9T9vY/S5QQKhQfwkI/AAAAAAAADyk/YXNnejI5a-4/s800/Dady_134.jpg)

after gluing
(http://lh4.ggpht.com/_GLEW7B9T9vY/S5Vg3VSN5WI/AAAAAAAAD0U/6wT5r8d6XIs/s800/DSC05679.JPG)
(http://lh5.ggpht.com/_GLEW7B9T9vY/S5Vg5GsHHII/AAAAAAAAD0g/3eYHZa4sDnA/s800/DSC05682.JPG)
(http://lh4.ggpht.com/_GLEW7B9T9vY/S5Vg51fv4RI/AAAAAAAAD0k/APaHTtKXOKU/s800/DSC05684.JPG)

(http://lh3.ggpht.com/_GLEW7B9T9vY/S5lsHg9XizI/AAAAAAAAD4E/k2odQsYihzg/s800/DSC05721.JPG)
(http://lh4.ggpht.com/_GLEW7B9T9vY/S5vFHA1848I/AAAAAAAAD4k/lvb0Jp1usvc/s800/DSC05732.JPG)

comparing fulldraw shape with other yumi
(http://lh3.ggpht.com/_GLEW7B9T9vY/S5vFKqUVbtI/AAAAAAAAD44/Sn3AvZApbLs/s800/test.jpg)

and the arrows for my yumi :D
(http://lh4.ggpht.com/_GLEW7B9T9vY/S5QQJFAL1hI/AAAAAAAADyY/sLFCNtkIAJ0/s800/Dady_124.jpg)
Title: Re: Yumi bow
Post by: akila on March 14, 2010, 04:36:10 pm: Great job Andrei....im happy for u , i know u want a bow like this for a long time...... great job..... ;)....
Title: Re: Yumi bow
Post by: david w. on March 15, 2010, 12:38:56 am: Really cool bow. Those Yumis are neat :)
Title: Re: Yumi bow
Post by: Pappy on March 15, 2010, 10:09:39 am: Very cool,nice work.Be tough to use that out of a tree stand. ;) ;D ;D
Pappy
Title: Re: Yumi bow
Post by: loefflerchuck on March 15, 2010, 01:50:18 pm: Lots of history with these bows. I remember reading in the early day of the samurai, this was as important a weapon as the sword. Great to see something different!
Title: Re: Yumi bow
Post by: mullet on March 15, 2010, 07:28:41 pm: The Samurai were the only ones allowed to use them.
Title: Re: Yumi bow
Post by: dady on March 15, 2010, 09:01:29 pm: Quote
The Samurai were the only ones allowed to use them.
you're right :), and now i am >:D
Title: Re: Yumi bow
Post by: PeteC on March 15, 2010, 11:23:24 pm: That's neat dady,good job. God Bless
Title: Re: Yumi bow
Post by: bhenders on March 16, 2010, 02:49:31 pm: Quote from: loefflerchuck on March 15, 2010, 01:50:18 pm
Lots of history with these bows. I remember reading in the early day of the samurai, this was as important a weapon as the sword. Great to see something different!

True way back when, the samurai were mounted archers and the bow and arrow were the primary weapons that they used. Swords were not often used from horses because they were short range weapons.
Title: Re: Yumi bow
Post by: kiltedcelt on March 17, 2010, 09:08:20 pm: I really like the comparison shot where you overlapped your image with the image of the kyudo guy shooting a yumi. It really shows how you got that tiller spot-on.
Title: Re: Yumi bow
Post by: okiecountryboy on March 17, 2010, 09:21:53 pm: love the bow and the underlays. Adds a personal touch. Goooood Job!!
Ron
Title: Re: Yumi bow
Post by: Pdwight on March 18, 2010, 02:12:01 am: WOW........just WOW, I practice Iaido...the art of drawing and cutting with the Nihonto or Japanese Katana....I have always wanted a Yumi....not that I know how to shoot it properly....but always wanted one....let me knwo if you ever decide to make one for sale.

Thanks
Dwight
Title: Re: Yumi bow
Post by: Sweet Potato on March 18, 2010, 03:15:53 am: Very very nice work! Could you describe how you processed your bamboo? Any words are appreciated.

Sam
Title: Re: Yumi bow
Post by: dady on March 19, 2010, 07:58:14 am: i just split the bamboo in 6 stripes (4.5cm each), no heat treated and made tapper from riser to end of the limbs like 2-3mm starting from 7mm. the core it's made by 6 stripes of bamboo 5X7mm in section.
Title: Re: Yumi bow
Post by: Keenan on March 20, 2010, 04:47:26 am: Very cool bow, Looks like you nailed it. Congratulations on a very unique beauty.
Title: Re: Yumi bow
Post by: dady on March 20, 2010, 02:47:45 pm: (http://lh4.ggpht.com/_GLEW7B9T9vY/S65SsJxhXHI/AAAAAAAAD_k/Qm4G_3w61aI/s800/DSC05830.JPG)(http://lh5.ggpht.com/_GLEW7B9T9vY/S65StZ71zzI/AAAAAAAAD_s/aXY2iZ8wuBU/s800/DSC05832.JPG)
http://www.youtube.com/watch?v=LDgJXtf2S68
http://www.youtube.com/watch?v=pGCcJIXlLB8
http://picasaweb.google.com/andreiavram00/Practice#
i love this bow . i have a lot to learn to shoot in japanese style but this bow make my day, I'm very proud of him.
Title: Re: Yumi bow
Post by: Sweet Potato on March 23, 2010, 10:23:19 pm: Thanks for the reply.

Nice videos and great work, again.

Sam
Title: Re: Yumi bow
Post by: Hillbilly Deluxe on April 09, 2010, 07:14:44 pm: Hi everyone, this is my last bow i made, it's been a wile since i start looking for materials, specialy bamboo. The entire bow it's made with bamboo, 6 stripes for the core, back and belly.
gluing the core

Mr Dady-

I was wondering how thick the core of the bow turned out to be, what size strips did you use in the core, and could you post some of your dimensions? I am wanting to make a yumi as a wedding present and was also thinking all bamboo. Also did you have to tiller the bow before you put the belly on or did you tiller the belly at the end?
Title: Re: Yumi bow
Post by: dady on May 03, 2010, 04:25:16 am: Hi, the core thick is 7mm at the grip, 4mm at the upper limb and 5 at the lower limb. Strips size are 5mm. the with of the limbs are 2.8mm at the grip, 2.2 at the upper limb and 2.4 at the lower limb.