How to make Bangpae2012.10.24 01:51

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Written by Lee,Sung-Sam (Korean reel craftsman), translated by Peter,Nam

 

Korean reels are classified by legs of 2,4,6,8,12, most popular one is that of 8 legs.

8 and 12 legs reels have around 220~230(mm) outer diameter, 320(mm) height and 950~1,050(g) weight.

They are made by tight fitting process with wooden bond work as follows.

 

1. 8 legs reel

I uploaded detailed 8 legs reel drawings at How to make korean kite > 2. Key elements for Bangpae.

 

1)  Inner support half grooving

 

2) Bonding

 

3) Quarter grooving on both sides

 

4) Three quarter grooving

 

 

5) Bonding

 

6) Grip bar fixing hole drilling

 

 

7) Inner support finishing

 

 

 

8) Legs

 

 

 

9) Assembling

 

 

 

2. 12 legs reel (6 legs are short)

 

 

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Movie on flying2012.06.10 19:40

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How to make Bangpae2012.03.10 00:10

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Written by Hong,Hae-Myoung, translated by Peter,Nam

Prepare 3 times length of two arm wide opened line for bridle and then straighten it.

Tie in this way.

 

Tie the other side knot.

Keypoint is to put the left hand index finger under the string and to tie with right hand.

See carefully the tie knot method, knot not released by itself,self tied with this method.

 

Head bowing

 

Bowing can be stabilized by spreading out several times.

 

Adequate bow depth for the 400(mm) x 470(mm) Bangpae is about 35~40(mm).

 

Cut the bridle line as below figure.

 

For the 40(cm) x 47(cm) Bangpae, punch bottom bridle point at about 10(cm) from the kite bottom, and upper fake bridle point at about 9(cm) from the kite top.

 

This upper fake bridle point is used for preventing spine bent over under the strong wind speed over 6(m/s). This fake line is about 1~2(cm) longer than three of the others when pull out the bridle line.

 

Tie the central knot.

 

This knotting point should be coincident with bottom bridle point when spread out the bridle line.

 

Bottom bridle point knot.

 

Knot point needs to be near both of upper edge points when spread out the bridle line.The upper this point, the faster Bangpae reaction speed.Standard knot position is around 5(mm) lower from this point.

 

The upper fake bridle point knot.

 

Fake bridle line must be a little bit longer than three of the others,actually Bangpae is 3 points bridle.

 

Could you see the fake bridle line droops a little?

 

Tie a swivel.

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How to make Bangpae2012.03.10 00:09

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Bangpae bridle is 3 point one not that of 4, the fake one at center upside is just to prevent spine bent against strong wind pressure.

Step 1.

Prepare thread to be duplicated that length is about 1.5 times of head width or kite diagonal.

Step 2.

Make a double thread knot with thread length of from kite center to bottom corner end.

Step 3.

Tie at start point between kite upper and center with double thread prepared on step 2.

Step 4.

Drag thread from the point of step 3 via right side bottom corner end to left upper corner end.

Step 5.

Overlap main thread with that of prepared on step 1 at the step 4 end point, turn kite over with keeping the threads don’t move, wind threads 3 turns clockwise to the spar end, pull main thread toward me, and then make a clockwise ring against left index finger, next insert the made ring into stick out corner spar, finally pull out to tie main threads with right fingers while left 3 fingers-middle,ring,the little-fixing corner threads.

Step 6.

Drag thread from the point of step 5 via upper center down 22~25 (mm) to left upper corner end while thread tension taut, then turn kite over again with keeping the threads don’t move, wind threads 2 turns clockwise to stick out corner spar, pull main thread toward me, and then make a closckwise ring against left index finger, next insert made ring into stick out corner spar, finally pull out to tie main threads with right fingers while left 3 fingers-middle,ring,the little-fixing corner threads.

Step 7.

Wind thread 1 turn to the stick out corner spar of the step 6,spread out string to make bow string stable.

Step 8.

Drag thread from the point of step 7 via bottom left corner end to bottom right corner end, then make a double thread knot at here with thread length of from this point to the opposite kite center hole end.

Step 9.

Tie a knot at bottom bridal point  with double thread prepared on step 8.

Step 10.

Make a 4 thread overlap knot and this knot point should coincident to the end point of step 9 and 10 mm down from the upper corner ends when pull out thread up and down, and the thread from the start point of step 3 must be a little bit droop status.

Step 11.

Tie a swivel.

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How to make Bangpae2012.03.09 23:22

 

 

 

Same video below can see via Youtube.

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How to make Bangpae2012.03.09 23:19

 

 

I added the same Youtube video title below.

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How to make Bangpae2012.03.09 23:16

Overall process on tempering and straightening diagonals and spine.

1. Tempering except node part.No tempering at all on node part where is easily get brittle by heat.

2. To straighten both side lines from node and cool down them for 10 minutes.

3. To straighten including node part with bending after light heating on like this chapter. 

I added the same Youtube video title below.

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How to make Bangpae2012.03.01 01:49

Bamboo is one of the very important materials influence Bangpae performance.We Korean concluded best bamboo for Bangpae is 3~5 years old,cut during cold winter and cultivated at latitute around 35.We've tried to use the longer between near joints bamboo from subtropical zones,but has realized it's not suitable to Bangpae because of the comparatively weak elasticity.To get more elastic property with same bamboo spar,we generally perform torch blow tempering on the skin side. With other choices except quick tempering, far better bamboo is rarely acquired under following conditions. First, several hundred years passed interior roof bamboo materials lie on a little bit apart from the right above fireplace,it's very slowly tempered  and shows dark brown colored skin.Second, long years passed yellow ocher fence bamboo materials buried inside the fence,it's naturally seasoned  one by the time and tide.Korean kite fighters had been making sectional shape rectangular till around 1965,and had come to know round section-exactly half moon shape- is most effective for slight strong,elastic spars but processing round shape with plane blade was very difiicult,somebody invented this groove knife,at last all of Korean kite fighters have been using groove knife from around 2000.The 1st inventor of is not known yet, and with what kind of knife making it round in the 1960s is also not clear.

 

The other choice to see this Video at YouTube,below.

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How to make Bangpae2012.03.01 01:47

It's convenient to use cut-out jig with gimlet markings.And outside overlap gluing is recommended to reinforce paper endurance.
We had better prepare half-paper tailoring masters of every size.


 

1. Put this tailoring master on half folded paper to punch marks with gimlet.


2. Draw lines follow after these marks and then complete paper cut.

3. Make gimlet scratch lines onto outer lines to be folded.

4. Center hole cut and quadrisection it .

5. Hemming with glue.

 

6. Tail edge overlap hemming.

7. Symbol decoration with paint brush and Chinese ink etc.

8. Ironing if necessary.

9. Finished.

 

# The method without tailor master.

1. Draw a horizontal line of top width.

2. Draw a bisectional vertical line of kite height with straight square and triangular rule.

3. Draw a horizontal line of kite bottom sidth with straight square and triangular rule.

4. Draw a straight line from left top edge point to left tail edge point with sraight square.

5. Draw a straight line from right top edge point to right tail edge point with sraight square.

6. Draw two diagonal lines from top edge point to tail edge point with sraight square.

7. Draw a horizontal line at crossing point with sraight square and triangular rule.

8. Draw hem lines, upper over lap and trim lines.

 

 

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How to make Bangpae2012.03.01 01:29

1. Special tools and accessaries.

    Grooved knife, Double-edged knife, Whetstone, Sharpener for groove blade

Double edged knife used to split spars.

 

Bond : Two-liquid mixing type quick-drying epoxy araldite bond.

 

Following script is by Dominick,Jenkins.He had made this knife for himself and experienced so much about it.His comments must be very helpful to whom would try it.


Making and Using the Korean Kite Knife

Some initial comments.

I enjoyed making this knife and it is great to use. Here are some things I learnt along the way.

First, unless you are good with a angle grinder - I recommend that you get the sadvick saw blade cut up by someone who does or find a metal shop that can use a laser or electric sparking machine to do the cutting. There are two reasons for this, the first is that angle grinders are dangerous machines and the second is unless you are happy with using them it is hard to cut through the blade accurately.

Second, the grinding of the circular cutting edges with a high speed pencil dye grinder is realatively easy. The machine itself is not so expensive and neither is the air pump to supply it. I had difficulty finding the right abrasive heads - they need to go at 50,000 revolutions per minute -- but they can be got from: Meister Abrasives UK, e-mail sales@meister-abrasives.co.uk tele: 44 1327 703 813.

Thirdly, it is also important to grind the knife edge right. I have only just learned how to do this. You have to brind the edge of the knife steadily in to the edge of the grinding wheel at a low angle and let it rest there so that the knife edge is a thin triangular wedge and not a slightly curved wedge - this makes all the difference in getting a sharp cutting knife edge.

Some more to follow.

Finally, I had a difficult experience using the knife with some bamboo -- until I found out from Peter that the knife does not work very well on bamboo that has only seasoned for one year and/or is quick growing tropical bamboo. So it is crucial to get the older two to three years seasoned temperate zone bamboo.


Below knifes are designed, being made 100 pieces and will be presented to Korean Kite Fliers Society members  in the early of 2016 to commemorate the 3rd anniversary of the Great Mr.M,H,Park's death.

The NO.1 knife will be handed over to his daughter.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2. Jigs

    Glue jig with tailor's claws, Paper cut out jig

Gluing jig drawings below are for the Bangpae width 200(mm) to 600(mm), but the jig in below picture is optimized one to that of 400(mm).Point is the angle of 78(degree) fit well to every sized Bangpae, I recommend you to take an appropriate length of part 1 and 4 not to be hindered by them while you clamp kite on the jig with tailor's claws .

 

1) 200~600 Bangpae width Gluing Jig

 

2) 200~400 Bangpae width Gluing Jig

3) Paper cut out jig


3. General Tools

Rubber plate,Stainless Ruler(0-60cm),Compass cutter,Compass,Gas torch,Leather pad,Scale(0-1000g),Paint Brush,Gimlet,Scissor, Pruning shears,Woodwork bond.

 


4. Bamboo spar, Hanji (Korean Paper), and Woodwork bond


Ingredient : Acetic acid vinyl resin,etc : 42%, water :58%


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How to make Bangpae2012.03.01 01:03

Aspect ratio(kite length/kite width) has been changed from 1.5 to the recent standard 1.2, the smaller it is, the agiler Bangpae could be. You deserve to try and feel the difference of it.Click them and you could see well.

Tensions are measured as belows, with spar skin side compressed.

If you click on pictures, newly enlarged ones would be popped up and you can see each dimension clearly.

 

 

<Spars length for each sized Bangpae>

Short dense line in the center hole where dimension start indicates bamboo node that had better be put a third of center hole. These lengths are a little bit longer than bridle finished status.You had better spar machining with these lengths.

 

Belows are written by Rainer,Pochubay lives in Canada,easily viewable and very detailed.

 

 

Red shadow trianglular areas had better be cut out not to be paper wrinkle,etc

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How to make Bangpae2012.03.01 00:47

To amuse Bangpae fully, we need good Bangpae, suitable reel and well fit string(silk)

 

 

 

 

 

I can't help respecting and bowing on the late Mr. Park,Man-ho who had been devoting himself on upgrading Korean reels for 35 years and has passed away Jan.2012. He was not an educated engineer over bachelor, but I came to know his works are extremely scientific ones.He's got most effective and scienfic design through his long trial and error.I think the reasons why No.6 drawing so complicated are first, to get bigger moment of innertia, next, to get the same effect with bamboo joint, and then to get sufficient bonding surface area near the cetral part, finally to get less weight near the cetral part where inertia efficiency is not so good.The way to know the specific gravity of used material is measured weight / (Width x Depth x Height) of using wooden rectangular parallelepiped. (units of each are gram, cm). For example, used material weighs 100(g) and size are 2(cm) x 2(cm) x 30(cm), the specific gravity is 100/120 = 0.83. You can design your own reel by yourself meets the material based on the principle of the aboves. If you feel No.1 dimension 23(mm) weak, you could enlarge to 25(mm).Design point is to put masses as possible as outer area under the precondition of structural stiffness.

I think everyone deserve to try it easily with 4- legs reel. At first stage, inside plate log doesn't need to be machined so complicately like the drawings.Router or other machine is used to do it. I have an over 1(kg) reel made in 1980s not by Park,M.H, it was not machined inside plate log like drawings.I feel something weird,not smooth while rotating it.

As a mechanic engineer and flier, I want to comment about its characteristics and notandum to be accustomed to use it.

1. Stick pole and 6 or 8 leg assembly are tightly inserted during flying and disassembled after flying.It means reel assembly rotates with same angular velocity. In case of right-hander, wear cotton gloves and grasp the stick pole with five all fingers of right hand and try to don't rotate right hand while rotate reel counterclockwise(when see left side).Lefthand palm face had better be perpendicular to the rotating axis and one of leg end must be hold with just three fingers, thumb,index finger,middle finger of lefthand, if not reel leg ends strike wristbone easily.The reason why wear cotton gloves is to get less rotating friction, kind of cotton bearing, not for reel stopping.You had better try to wind stacking tread on right side of reel circumference.

2. Advantages of Korean reel(We call it Earlle)

1) Comparatively quick winding speed.(about 3(m/s), when use 230(mm) diameter reel, 4~5 rps equals 230x3.14x4~5)

2) Maximum using of inertia moment occured by the weight of all components including thread.
Inertia is proportional to mr^2(where m is differential mass, r is the distance from rotating center). Modern Korean reel has been developed to maximize it in given condition under stiffness restriction.

3) Sudden thread releasing is possible. We call it Twigim means bouncing in Korean words.

Quick throwing legs side with left hand toward kite direction and pulling stick with right hand onto right thigh outside under string tension very high- in strong wind or during quick winding tracking), line released quickly and kite turns its head direction possibly 180 degree. Twigim is very powerful attacking method in line cut game can't be done with others  than Korean reel. It's kind of reverse sawing action compare to the normal sawing one happened during fast winding tracking toward opponent's. In other words, Twigim means quick alignment of reel rotating axis onto the vertual line made between flier and the point Bangpae floated in the sky. There are two kinds of it, full or half-Twigim. The full hits upper thigh outside, the half doesn't.

Here you can go and see Twigim videos at http://cafe.daum.net/yeonssaum/K5e/110 .

 

 

 

4) Winding distance, near no limitation.
Usually Korean fighter wind thread around 4~500 meters on the reel. But higher flier can do it longer.

5) Good to upper body muscle developement.
We can feel gradual growth of forearm and shoulder muscle.

3. Weak points
1) Very awkward at first stage.
It needs around a week for novice to accustomed to it, and easy to derailed at first. No kite connected exercize is useful to upgrade.
Korean fighters using about 950~970 gram reel, but at first,had better design,make, and use about 850 gram one.

2) Comparatively big
It needs extra reel box.

3) Hard to make accordingly expensive to buy.
Not so simple to make and 8 legs reel cost around 300(USD) made with ebony wood.

1. 8 legs reel drawings.

1) Legs

2) Inner support A

3) Bonding and grooving inner support A assy.

4) Inner support B

5) Inner support assy

6) Inner support ass'y machinning drawing.

7) Main body assembling ( Legs + supports),designed weight is 965(g) when use ebony that specific gravity is 0.96~1.12

8) 8 legs reel assy

9) Gripper

 

 

2. 6 legs reel drawings.

1) 6 Reel Assembly

 

2) Joint Plate Machining Drawing

 

3) Joint Plate Assembled

 

3-1) Joint Plate P1

 

3-2) Joint Plate P2

 

3-3) Joint Plate P3

 

4) 6Reel Leg

 

5) Grip Rod

3. 10 legs reel drawings.

- This reel has not traditional spoke numbers, this has been designed, invented by Peter,Nam in 2015. The reason usual was relatively complicated joint structure between layers.

1) 10 legs reel assembly

2) Joint Plate Machining Drawing

 

3) Joint Plate assembled before Machining

 

3-1) Joint Plate P1

 

3-2) Joint Plate P2

 

3-3) Joint Plate P3

 

3-4) Joint Plate P4

 

4) Leg(Spoke)

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How to make Bangpae2012.03.01 00:42

The name Bang'Pae 防牌鳶 has been used at least for the last 300 years in Korea. It has shown up on "Ak-Hak-Sup-Ryoung" in 1713,  "Hae-Dong-Ga-Yo" in 1767 and "Ga-gok-Won-Ryu" in 1876. 

        

 

Korean calls Korean kite Bang'Pae because we think it looks like rectagular shield.BangPae means a shield in Korean.

The other names "Yon鳶" or "Ji-Yon紙鳶" also found in old books. In recent about five decades, "Bang'Pae-Yon" has become the most generic term represent "Center holed rectangular fighter kite" out of Cham-Yon,Dal-Yon,BangPae-Yon. The former both are regional names.

To recent Korean, "Yon" can be understood as "kite". All the kites in the world called  "bra bra-Yon" in Korean. Under this environment, "Bang'Pae" has replaced "Yon" to divide,point "Center holed rectagular kite" from all type of kites "Yon".

Two main Korean kites by shape are "Center holed rectangular one" and "With tail diamond shape kite".
I think to classify two, the former became "Bang'Pae-Yon", the latter "Gaori-Yon"

Currently,there are two types of fast moving controllable kites in this world, one is two string controllable stunt kite or quad-line, the other is that of one string. One string type divided into two sorts again,one is lozenge or diamond  group of Indian,Hongkong,American,Afghanistan,Pakistan,Tibetan, etc, the other did into rectangular includes Korean Bang'Pae,Japanese Buka,Tahara,etc.Special characteristics of Bang'Pae are broad three points bridle, and center hole,this shape is found nothing but in BangPae.Well made BangPae with kite reel winding speed around 2~3(m/s)shows first, extremely awesome horizontal, upward,and downward tracking performance, and then quick kite head turning performace with a slight line releasing,next float high in stable during no maneuvering action.The ingenious result of center hole helps to get fast stablization after string releasing that is very useful as a fighter. Flying BangPae with Korean reel made with fully natural materials is very helpful to our health and a good physical exercise as like flying two line controlled sports kite.

On the web, I saw a thread  that a novice Korean BangPae flier says he can't believe flying BangPae with Korean reel makes more get tired physically than shooting Korean bow.
In my personal opinion based on my experience, to do it around 3~4 hours is almost same amount of physical exercise ,get drowsy after each workout below.

- 2 hours slow swimming
- Mountain hiking slowly aroud 2~3 hours
- Skiing 3~4 hours

You can also see more beautiful Korean kites at 

 http://cafe.daum.net/yeonssaum

http://www.koreakite.or.kr/

http://www.ekitekorea.com/index.asp 

http://tv.seoul.go.kr/ls/index.asp?no=37774

http://www.kiteworld.co.kr/bbs/home/kiteworld/

http://www.koreakite.net/

http://www.kkite.kr/index.php

http://blog.daum.net/kang00000

 

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How to make Bangpae2012.02.28 21:22

I plan to make the kindest manual to reach Bangpae world, I've been making and flying it over long years, and found no its accurate teaching manual in English.I hope you could get on steps to the febulous world of Bangpae. I'll proceed with follow syllabus and it will probably for me take several months to wrap up it.

 

 

1. Why Bangpae - Korean kite?

2. Key elements for fun Bangpae

    1) 8 legs reel drawings.

    2) 6 legs reel drawings.

3. Each sized Bangpae specification,size and spars tension,etc.

4. Tools, jigs,and materials to make Bangpae

5. How to make Bangpae?

      Part 1 - Paper 

        1) Paper cut out, overlap outside gluing

        2) Draw own symbol

      Part 2 - Spars processing

       1) Spar tempering-Head,Diagonals,Spine(Video)

       2) Spar straightening(Video)

       3) Spar tempering-waist(Video)

       4) Spar split -waist(video)

       5) Process spars- Diagonals

       6) Process spars- Head,Spine

       7) Process spars- Waist

       8) Fit cut-Head,Diagonals 

      Part3 - Glue Spars

       1) The reason why use glue jig

       2) Head, the first half diagonals

       3) The second half diagonals

       4) Spine,waist

      Part4 - Bridle

       1) One string method(Video)

       2) Two string method(Video)

  6. Wet aging for surface spreading.

  7. Flying technics include track balancing.

  8. Bags for reel and kites.

 9. Korean reel making process.

10. Voluntary service to procure Bangpae materials.

11. Central volume up gluing without jig.

 

- 28th,Feb,.2012, Peter,Nam -

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