Main Discussion Area > English Warbow
Hazel longbow, 100# @ 28"
Strichev:
Thank Will, I'll look into that. I'd really like a natural string on a bow for once.
JNystrom:
--- Quote from: WillS on November 21, 2017, 03:20:47 pm ---Linen works best I've found as a full reverse twist string with 3 plies - imagine you're twisting up the loop of a normal string, and just keep doing the same thing for the full length.
--- End quote ---
Why full twist? I remember you have made linen strings for 130 pound bows at least, is that the highest?
I've always made the normal flemish.
WillS:
It just helps remove the inconsistencies with unknown fibres. I wasn't impressed with the breaking strain tests, so full reverse twist locks the short fibres in much better. That string was still only about 3mm which is a good size for general shooting.
You can definitely make them without reverse twisting the whole string, but you'd need very good quality linen thread in order to do it, or treat it like the hemp strings and glue instead of wax them. I know it's been done at 180lb without reverse twisting.
FilipT:
Will, is this Barbour 18/3 you are talking about or that "EU made" as you put it? Can you do it two plys flemish? What is the breaking strength of each strand?
WillS:
It's all 18/3 Barbour, but it used to be made in Ireland before the company shut down. It's now made in the EU somewhere. There's still the original spools out there but they're not always stored correctly, and can be very weak and brittle.
You can do 2 ply Flemish but it won't be very strong. It can get quite complicated, but essentially you need to make sure you have a maximum of 7 individual strands per bundle. Depending on breaking strain you then need to calculate how many bundles you need. 3 ply is far stronger than 2 ply, even with the same number of strands. For instance, if you decide you need 21 strands, you must make the string with 3 plies of 7 strands.
With modern string materials you can just bunch up as many strands as you want, but with natural fibre strings you have to be much more careful.
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