Primitive Archer
Main Discussion Area => Bows => Topic started by: DC on March 31, 2017, 03:06:17 pm
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Just in case I ever want to go into war against the French I want to check something. Do I multiply the width by .625 to check the depth? And do I multiply the depth by 1.6 to check the width? And a little R/D is OK as long as the string doesn't touch the bow at brace? Spliced handle OK? How about spliced tips in case I come up short? Is there a link to somewhere that lays this out. I tried and came up wanting.
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Ask on the War Bows. They will tell you for sure.
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I guess I should have thought of that :-[ :-[
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If you work with millimeters it might be easier. 8mm/5mm and go up from there in multiples, like 40mm/25mm etc...
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Well now doggonit Blayne, I been tellin' folks all this time standard is just as good as metric, and those fractional inches are actually quite helpful, then you go and give a case where metric is actually much better >:( ;D
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All that 5/8 th stuff is only because someone felt obliged to put a number on the width/thickness to stop people claiming flatbows were ELBs.
If you check your American longbows you'll probably find that is with the 5/8 rule anyway!
If you just make an ELB using your eye, you'll find it's well within the 5/8... you won't need to try and make it to the 5/8.
Generally they come out nearer 6/8 (or 3/4 as we sometimes call it ;) )
Just for info here are some dimensions from a 70# ELB
Yew ELB 71ntn 60#@28” 70#@31”
Left column, distance from nock (inches), then width and thickness in mm
4 16.9 14.5
8 19.3 16.9
12 21.4 17.4
16 23 19.2
20 24.7 20.6
24 26.1 21.4
28 27.2 22.2
32 27.7 23.3
34 28.2 26.2
If you check some of those figures you'll see it's nowhere near 5/8 (0.62)
E.G Mid limb 16" from nock 19.2 / 23 boils down to 6.7 / 8 about ( 0.8 )
Del
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If you check your American longbows you'll probably find that is with the 5/8 rule anyway!
If you just make an ELB using your eye, you'll find it's well within the 5/8... you won't need to try and make it to the 5/8.
Del
It's funny you say that. I was kind of part way into making a bow and I thought ELB. When I measured the limbs they were right at 5/8. This post was just to check my measuring/figuring method. It may be a moot point, I discovered a crack near a knot in the fade. I'm not sure I have enough wood to eliminate it.
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DC
what wood is your bow made from?
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Yew. It was half of a failed bow that has been standing in the corner for a year so I found another limb, spliced it on, roughed it out and discovered the crack. If I cut off this cracked limb I will still have half of a failed bow standing in the corner. I do have an odd number of billets though ;) ;)