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Help on warbow/longbow tiller - first post! / now with pics...

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Haary84:
So it shouldn't be a problem for the backing if I round it that much? I can make the hole thing just round? But there should be a transition area between the almost square cross section and the round section, right?

Did someone already use an arrowplate (lets say 1mm thick bone or buffalo horn, not too large) on such a bend in the handle bow? Does it work or does it weaken the bow too much? Go or no go?

Del the cat:
I've put arrow plates on several warbows with no problem (they all flex slightly in the grip, even if you can't really see it)
Del

willie:
Looking quite nice Julian, hope to see some more pics when done.


--- Quote ---IMO the problem with the term "elliptical" is it doesn't say what shape ellipse or how far round the elliptical curve.
--- End quote ---

yes "elliptical" is a bit ambigious. I have found that if I fix the long axis of the ellipse proportional to the overall length of the bow, I can make the short axis flatter or fatter as the draw length changes. Its not perfect, but I can flatten the ellipse to match the curve at brace height,  and even the limbs quite well before even beginning to draw it further. and it is not far off at full draw.

I think that I used 1.2  times  the bow length for the last bow I tillered this way, but of course everyone likes a different curve.
I also tend to ignore fitting the curve to the last few inches by the tips

Del the cat:

--- Quote from: DC on November 15, 2017, 03:53:44 pm ---Make the end of the bow round and use a smaller nock?

--- End quote ---
+1
tips can almost always be smaller and the blend from rectangular to round can happen over the last 5" or so of the limb, nice and gradual.
Del

joachimM:

--- Quote from: Badger on November 15, 2017, 09:39:45 am ---   I have always felt the same way about the word elliptical being ambiguous. If I were to describe my preferred tiller I would say I like the middle 8 or 10" slightly stiffer and I like the last 10" of the limb barely flexing. I find if I get too circular the bows tend to feel more shocky.

--- End quote ---

Well, it's easy to define how elliptical the desired shape should be. Essentially, a circle is an ellipse with two identical (horizontal and vertical) radii. A flattened ellips has the horizontal radius longer than the vertical one.
Show us your ideal tiller profiles for ELBs, and we can easily deduce the proportions of the vertical and horizontal radius of the ellips. Say it is 1 to 1.2, we can henceforth define the ideal elliptical shape as 1/1.2, and we can also look at a tillering pic and see how much it deviates from circular, and how much from the ideal ELB (or whatever bow type that should have elliptical tiller, like holmegaards and mollegabets).

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