Author Topic: Eskimo Cable-backed bow needed help - taking shape!  (Read 38181 times)

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Offline half eye

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Re: Eskimo Cable-backed bow needs help
« Reply #15 on: January 23, 2012, 10:27:15 pm »
The "cables" are supposed to be three small sinew cords that are braided (plaited) into what ya see as one "cord".  Actually the cord you used actually looks like the "right" thing maybe just a tad large in diameter is all. Actually you could use what ya have for the "main" cable and use some half that diameter for the half-hitches (solider) lashing.
     I dont see anything wrong with your first bow's wrap pattern, though
rich

Offline Gus

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Re: Eskimo Cable-backed bow needs help
« Reply #16 on: January 24, 2012, 01:26:42 am »
Beautiful Work swamp monkey!

Looking forward to your updates and finished bow!

-gus
"I taught him archery everyday, and when he got good at it he throw an arrow at me."

Conroe, TX

Offline soy

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Re: Eskimo Cable-backed bow needs help
« Reply #17 on: January 24, 2012, 02:48:30 am »
Holy smokes!!! That's one nifty looking setup.lot of work, nice details...A+
Is this bow making a sickness? or the cure...

Offline swamp monkey

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Re: Eskimo Cable-backed bow needs help
« Reply #18 on: January 26, 2012, 11:37:40 am »
Progress report:
•   Cabling and binding removed.
•   Nocks filed deeper.
•   Small groove for the bow string filed in post nock.
•   Cabling replaced but with fewer strands over the post.  More soldier hitches used.  This way less room is occupied by cabling over the nock.
Yet to do: 
•   Redo binding wraps.
•   Wrap sinew (marinated ever so lovingly with knox gelatin (as hide glue)) around post tips to create a bulbous knob.
•   Restring and hopefully the four strategies I employed will keep the string on so I can bring the bow to full draw.

Offline Buckeye Guy

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Re: Eskimo Cable-backed bow needs help
« Reply #19 on: January 26, 2012, 02:15:12 pm »
Stunning!
Quality work!
Hope she works out for you !
Can't wait to see it !
Guy
Guy Dasher
The Marshall Primitive Archery Rendezvous
Primitive Archery Society
Having  fun
To God be the glory !

Offline swamp monkey

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Re: Eskimo Cable-backed bow needs help
« Reply #20 on: January 28, 2012, 07:30:01 pm »
Here are images of the Eskimo cable-backed bow with the cabling reworked.  The sinew bulbs are drying and I will wait until then to string.   

Notice the deeper nocks and how the cabling takes up less room.  :)

Offline swamp monkey

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Re: Eskimo Cable-backed bow needs help
« Reply #21 on: January 28, 2012, 07:38:46 pm »
I  had a drawing of a Yukon area bow that had an ivory handle stiffener.  I suppose that was the solution to putting wood back on.  We are a little light on ivory supplies here in SE MO so I grabbed a piece of cherry from the firewood pile and crafted a stiffener.  I liked the red on white color combination.

Offline half eye

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Re: Eskimo Cable-backed bow needs help
« Reply #22 on: January 28, 2012, 07:45:52 pm »
Really sweet stick there....
rich

Offline swamp monkey

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Re: Eskimo Cable-backed bow needs help
« Reply #23 on: January 28, 2012, 07:48:29 pm »
Cabling:  It was time to back it with a cable.  Dick Baugh posted an internet article on an Eskimo style cable backed bow where he use braided nylon string for his cabling.  He stated that braided nylon had similar properties to sinew cable.  Then he cited how much cabling some of these bows take and right away I decided nylon sounded like a real nice choice.  SO I went to my local hunting and fishing shop to get some trot line cord.  100% nylon, # 36 braided, gold, 305 lbs. test.  It seemed to be the right diameter.  Eight loops around the nocks and two more that went nearly the full length but stopped short of the nock.  I used soldier hitches and half hitches to get this bound.  The great thing about this is the last 4 inches of each limb tip tapered in so the half hitches pulled into the wider section keeping them tight. 
Tightening the cable: The Eskimos used ivory to make a cable twister.  I chose the opposite of ivory – ebony.  Sort of.  Persimmon wood was used historically to make ebony piano keys.  It is a hard wood that takes a real nice, slick finish. So I again went to the wood pile for stock material.  I found out right away that permission will split easier than maple or hickory.  I broke off the curved end of more than one model.  That only made me more determined to make one work!  With that head butting contest out of the way I began twisting the cord.  About 10 turns tightened things up.  I then began the wrapping.  While the twister was still in between the cord bundles I wrapped some cord through the gap and around the handle about 5 times and removed the twister.  I finished by wrapping another five courses around the whole bundle and handle again.  So far so good. 

It’s a wrap: To wrap the cable and keep it in place I needed to do a crisscross weave.  To facilitate this I made two shuttles like the natives used to hand weave nets.  I knew these would be handy when dealing with long segments of cord.  I pulled out 20’ of cord and wrapped one shuttle.  Then I pulled out another 20’ of cord.  Without cutting the cord I began wrapping the other end around the second shuttle.  This way I could use both shuttles to work one long cord around the bow evenly.  That sounds more complicated than it is.  I started with the handle stiffener section and wrapped on the stiffener then in front of it.   Then I made X patterns all the way down the limb.  I stopped short of the cable knots and wrapped it. 

Offline swamp monkey

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Re: Eskimo Cable-backed bow needed help - almost done!
« Reply #24 on: January 28, 2012, 07:55:35 pm »
Here are belly and profile of limbs.  I hope to string and draw tomorrow depending on how the sinew dries on the tips.   As Paul Harvey used to say, "Stand by for news!"

Offline swamp monkey

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Re: Eskimo Cable-backed bow got help & now FULL DRAW!
« Reply #25 on: January 29, 2012, 08:27:43 pm »
I roughed up the nocks and applied sinew wraps that were dipped in knox gelatin. 

Offline swamp monkey

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Re: Eskimo Cable-backed bow got help and now FULL DRAW!
« Reply #26 on: January 29, 2012, 08:31:47 pm »
Final Specs:
TL= 55”
Nocks =7/8” tall, Ό” dia. w/o sinew, 3/8” w/ sinew
Limbs:  W= 1 Ό”; T=1/4” at tip end below nock.
W=1 7/8”; T=3/8” mid limb
Handle: W=1 Ό”; T ½”  w/o handle stiffener
Handle stiffener:  12 ½” length; W=1 Ύ” max., 1 Ό” min.  T= Ό”
Handle section has 6” between fades. 
Limb tip has 5”of taper for the limb to go from 1 7/8” to 1 Ό”
65’ of braided nylon (no. 36 trotline cable, 305 pound test) gold color.
String: B-050 Diacron.
Art work indelible ink.  Art icons taken from an ivory scrimshaw piece from Eskimo territory.

F-D data
           w/o cable   w/ cable
draw   force       force
10            8           9
12           12          13
14           16          17
16           20          21
18           24          26
20           28          31
22           32          36
24           38          42
26           45          48
28           50          52

My heartfelt thanks for those who provided suggestions and encouragement for fixing this minor issue.   Now that I have learned a thing or two my next cable-backed bow will be with a willow stave.
« Last Edit: January 29, 2012, 08:51:46 pm by swamp monkey »

Offline swamp monkey

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Re: Eskimo Cable-backed bow needed help - now FULL DRAW!
« Reply #27 on: January 29, 2012, 08:37:33 pm »
Now for the pix.  Arrows zip!  The final unstrung bow took 7/8" set with the cable on. 

Finish coat was seven coats of Linseed oil with steel wool in between each. 



Now for some otter arrows!
« Last Edit: January 29, 2012, 08:52:27 pm by swamp monkey »

Offline tattoo dave

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Re: Eskimo Cable-backed bow needed help - taking shape!
« Reply #28 on: January 29, 2012, 11:09:38 pm »
That came out SWEET!!! Nice work, one of these days I'll get around to makin a cable backed bow.

Tattoo Dave
Rockford, MI

Offline Patches

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Re: Eskimo Cable-backed bow needed help - taking shape!
« Reply #29 on: January 30, 2012, 04:15:58 pm »
Nice bow!  I am glad you go the knock problem figured out.  Can't wait to see it (hopefully shoot it?! ;)
"You are never a complete failure as long as you can be used as a bad example..."