Perfect wooden bow? Vol. 2- is it geometry?

The flight 137.5- bow is made of 2 limbs, 1 handle, wedges. If the wood of choice has no good steam- bending capablities siyahs have to be v- spliced into the limbs.

It´s a must to prepare the limbs very carefully. I´m not to confident with that design yet, I´ll try some more limb- designs, a wider more reflexed one for a smoother draw.

I haven´t had options for to make the limbs of the osage flight wider, the only osage I could find in my workshop were almost as small as the ready limbs. Some leftovers of a recently finished asymmetrical osage- flatbow.

The limbs of the rowan- flight are made of a green rowan. I splitted a stave cut very close at our farm.

The rowan has arrived
Splitting the rowan
The raw materials for the handle and the limbs
View at the limbs back, some bast left- width about 13/4", thickness 1/2"

The handle is made of mountain maple, the 137.5- angle is sawn. A right angle of the handle back to its sides is a must, otherwise the bow could be twisted.

As mentioned above the limbs have to be prepared properly.

Steambending of the limb

Just put the limbs on a pot of water, cover it with aluminum foil, heat the water till it begins to boil, leave it for about 40min. Steaming times depends on thickness of wood and the degree of curve or bend. Usually recurves have to be steamed for about 20min., there´ll be an article focused on steam- bending bows within the next weeks.

Bending the limbs after the steam- fixed with clamps- pieces of wood are used to shape the angle

I left the limbs at least 2 days for “shaping”. The limbs of the osage flight 137.5 are recurved soon after the steam- bending, rowan is hardly to steam bent, so I´ve v- spliced the recurves into the limbs.

I´ve a lot of such diy- recurve molding forms- sharp recurves like that one- soft recurves.......

Again: after steam- bending the wood has to be fixed in a tool for to get its shape. I left recurves for an hour in the tool.

Next is to check again the dimensions of the limbs, they´ve to be equal in length, width and thickness and shape. Thickness should be at least 1/2″ now. The limbs have to fit properly to the back of the handle. Instead of cutting the ends of the limbs to a proper angle, I cut them in a right angle, for to get the space to fit in a wedge. No other need than a cool looking.

After having glued the limbs to the handle the wedges have be inserted

Sorry, this is a bad pic! I´ve chosen the dark- brown walnut as wedges, I´ve used a handsaw, a chisel and a wooden hammer for to adjust the wedges to the handle.

Glueing the wedges for to enforce the joint of the limbs and the handle

After the glueing the wedges are sanded down. There are for sure some more ways to fix the limbs to the handle. The limbs of the osage flight 137.5 were v- spliced into the handle, a somehow delicious job, but I like that kind of jobs.

V- splicing the limbs to the handle

Again a chisel- and handsaw-  job!

View at the sides of the splice- the handle is made of flowery- ash

To insert a double dovetailed wegde would have been another possible joint, I tried it, but found it to unstable.

The angled double dove tailed wedge solution

For gourmets of wooden joinery, another one.

The angled dovetail joint

Next volume is dealing with tillering and heat- treating the limbs adjusting the string- bridges and recurves/ siyahs.

 Yesterday I´ve shot the osage flight 137.5 at 22″ ,same 195grs. arrow:

That´s speeeeeeeeeeeeeeeeeed...........................
Osage- flight at 20"- looking like a trapezoid- I love it: bowery is geometry, said a friend of Homer!
My daughter wanted to give the osage flight 137.5 a try too- the dog is my birthday- present- a 6 month old dog from Spain- since one week she is mine, what a surprise, she likes my workshop and I love my wife for that!










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Perfect wooden Bow? Vol. 1- speed matters

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flight 137.5 braced at about 4" - made of osage at the top and made of rowan at the bottom
The flights unbraced
The bows backs, at the top there is a simple flight- arrow
That´s the speed for the osage flight 137.5- arrow length is 20", it is weighing 195grs.
That´s the speed for the rowan flight 137.5, same arrow as above

I´m a happy man with that speed and a very satisfied bowyer too. It took me almost 20 years for to make wooden bows performing as fast as hightech- bows- that´s great!!!

Don´t ask me now, why these bow- designs are coming out such fast. It´s some try and errors, I´ll need some time for to realize it. I´m that type of guy following something and not really knowing why.

Above all I was heavily inspired by Marc St. Louis recently posted short elm flightbow, have a look at PALEOPLANET

I just want to do it. I thought about it and come up with some variations. Just have read something about the Golden Angle as a very a well known construction principle in former times(A- frame houses) and in nature(flowers, crystals……). So I gave it a try. Instead of joining the limbs with a tapered finger joint, I attached the well prepared limbs(shaping, steam- bending the angle, heat- treating) to the handle and fixed it with dove tailed wedges, the rowan flight 137.5 is done this way. Don´t be confused about some leftovers of the wedges of a former trial. My first trial went wrong cause I bent the limbs backwards to much while heat treating them. So I cut the limbs of and could use the handle again. The handle is made of mountain- maple, the wedges are made of field- maple as well as the v-spliced in siyahs.

The limbs of the osage flight are v- spliced into the handle which is made of flowery ash and reenforced by small logs of blackthorn at the belly, shaped so for to keep the string as near as possible to the limbs and to allow a comfortable and secure grip.

Length of the osage flight 137.5 is 46″, width is 11/8″ at the handle tapering to about 1/2″ at the tips. The rowan flight 137.5 is measuring 50″ in length, width is tapering from 11/4″ at the handle to 1/4″ at the tips.

Sorry, but I´m still suffering from a badly influenza, so I felt not strong and tough enough for to make the chronos at full draw. At full draw speed will be 200plus f/s.

The design is combining ancient designs like the Angular bows of the Egyptians, the Scythian bows, a lot of the insights of Marc St. Louis, Tim Baker, Steve Gardner, Alan Case, the ATARNET- and PALEOPLANET- members, Adam Karpovicz´ ideas and work on “low stack bow- designs”. Last but not least it is a result of the www and the networks, so this is a kind of global bow.

Next volume is updating the chronos and tells the making of the flights 137.5