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English Longbow Help (with image)

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markc324:
Hi,

I'm new to archery and would love to learn more from all you good folks! I'm trying my hands on making a bow since I know how to build stuffs (self-taught mostly..) and am confident with my craftsmanship. The bow I am making is jatoba (brazilian cherry) backed with maple to sort of mimic the yew wood. I think I have the whole thing up to this point in pretty good, if not excellent, shape...I've rounded the belly, bevelled the edge of the backing, attached and grooved the horn nocks. Now for the scary part - tillering...as much as I love the way things turn out thus far, but with bad tiller, all these milestones will all come to the unfortunate failure. Please refer to the images attached to this post. I've added one original and one with my own diagram drawn to it. according to the diagram, i can see that the top limb (right) is bending a tiny bit more then bottom limb (left), which is ok as long as it is within ⅛" - ¼" (i've read this somewhere. please correct me if I am wrong on this). Please provide your input and thoughts on the current tiller. Feel free to add your own diagram to the original image for analysis, and also, much appreciated if you guys can give me some pointers on what to do next.

I should also mentioned that the bow is having a low brace right now, 5" to be exact, and has not bent past 6-7 inches so far. at this point, is it safe to brace to 6.5" brace height?

markc324:
can you guy see the images attached? it shows up on my computer, but not my phone nor my wife's computer. I wonder if you guys are experiencing the same thing.

WillS:
Your bow has far too much bend in the middle, and none anywhere else.

At such an early stage, you want the midlimbs to be doing most of the work, as the middle only starts bending towards the very end of the draw.  The further you pull a bow, the more the middle will try and bend so if you were to take your bow as it is now and draw it to 30", you'd see a massive hinge smack in the middle, and stiff limbs everywhere else.

You can keep it at the current brace height if you want, but work only on the mid-limb to tip section on both sides.  You're going to lose a lot of draw weight and take some set but that's how you learn!

What I would do personally is unbrace, reduce the limbs and then brace it again, and keep repeating until the brace shape shows an even bend in the midlimbs and much, much less bend in the middle.  Then start drawing it on the tiller and make sure the middle doesn't do any more bending until at least 20" if not more.

cadet:
What 'e said: I'm no expert, but that's not bending all over like it should, it's all in the middle; mid limbs and tips need to start bearing some working load.

Badger:
  Looks like you might have the beginnings of a hinge right where it sits at the door jam.

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