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Tillering warbow with reflex
WillS:
That's very cool, thanks for doing that mate! I'll put some back into it then, and start heaving it down some more. It's not trying to flip on me too much which is nice at this stage, so hopefully I'll be able to brace it without giving myself a hernia.
adb:
Nice work Del! I'd still get it bending in the middle more and worry about the tips later. I wouldn't call your right tip a hinge yet, but certainly keep your eye on it.
toomanyknots:
--- Quote from: WillS on May 26, 2013, 09:59:56 am ---My worry at the moment is that deflex area on the right limb. To my inexperienced eyes, that screams "hinge" but as it's deflexed without any tension, do I still treat it as a hinge?
--- End quote ---
It very easily could become a hinge. Any deflex in a stave, in a part that is going to be working limb I mean, can easily become a hinge if you are not careful. This is assuming you are going to just tiller out the stave with the deflex in it, without steaming or heating it out. You want to be very careful when tillering. If you have to remove wood from that spot, do it little by little. What I would do right now is (other than pulling the stave just a tiny bit more to have a better look at whats going on) is definitely work on the reflexed left limb. And of course a bit on the right limb, right off the handle, but mostly weaken the reflexed left limb till it matches the right. When everything looks even and matches, with an even bend, then go from there like usual. When the bow is tillered completely, doing it this way (tillering it out to where the bend looks good to the eye, despite deflexs or reflexs in the stave), the limb that started out deflexed will be a good amount stronger than the left limb. This is because it will not have to move as far as the reflexed left limb to reach the same place, so it has to be stronger to be even with the left. And especially the exact deflexed spot, that spot will be thicker than the rest of the bow, which it has to be, to prevent it from hinging. Although to the unsuspecting eye, you will be the only one who knows all this, ;D. And obviously the deflexed limb will end up being the bottom one, as the bottom limb should always be the stronger limb.
WillS:
Thanks for that reply dude, very helpful!
Really interesting regarding your last point - I was working under the assumption that the left limb (reflexed) would be the lower limb, as currently it's a lot stronger. My offset handle is arranged in this way, as in TBB it's said that you pick the limb naturally facing the archer to be the upper limb. But like you said, once everything's finished and the tiller is even, at that point the deflexed limb should be stronger. Which throws everything upside down!
This bow making thing is crazy.
adb:
There's certainly more to it than most people think!
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