B55,D97, and Linen

[bassman]

Yes Pat, I was on a run buying vintage glass bows for a period of time, and it came with one of those bows. Actually I had another thinner one that I got like that, but it was all beat up. This one is in good shape, and is tied with continuous loops.

[bownarra]

Wouldn't a sinew, rawhide, gut, or other natural fiber string also work in primitive class?

Of course they will make a string but not a high performance, on the edge type string.

[bassman]

Badger if you are still reading this thread I fixed my scale this morning with some crazy glue of all things. The linen string weighs 150 grains. I looked at the conversion chart from grains to grams, and it comes out 9.71 grams. The B55 string weighs 130 grains, and the D97 string weighs 90 grains.

[Badger]

  Thanks Bassman, that makes sense. I am surprised the B55 string is so heavy with only 7 strands.

[bassman]

For nock fit I have to tie a double serving, and a floss pad in between the servings. I believe that adds weight to the string. I  try to compensate for that by tying the pig tails as short as I can get them, and still be safe.

[PatM]

Are you certain the linen string actually is linen?

[Selfbowman]

Steve some d97 has more wax. They have a low wax d97 also. Same strength I think just has less wax. That might be the weight difference. Arvin

[bassman]

Here is a couple pics for you. You tell me.

[Marc St Louis]

Badger if you are still reading this thread I fixed my scale this morning with some crazy glue of all things. The linen string weighs 150 grains. I looked at the conversion chart from grains to grams, and it comes out 9.71 grams. The B55 string weighs 130 grains, and the D97 string weighs 90 grains.

Seems like that linen string is a bit heavy but the D97 is about in line with what I have weighed

[PatM]

Here is a couple pics for you. You tell me.

  The reason I ask is because at one point fortisan started replacing linen and I believe it has a similar appearance without  having evidence of shorter fibers.   Bows from that era often offered a choice of the two.

  I remember seeing an old spool  of what was labelled "flax sinew"   but it also had another smaller fortisan sticker on it which puzzled me as to what exactly I was looking at.

[bassman]

So then it is linen.

[willie]

isn't fortisan like rayon?

[PatM]

isn't fortisan like rayon?

  Yes.

[PatM]

So then it is linen.

 If that tidbit of info settled it, OK.

[Marc St Louis]

I decided to take one of my linen string down to weigh and measure it.  The string is for s 59" bow that pulls about 55" @ 28" and it is a 340# string calculated by the number of strands times break strength.  The string weighed 110 grains and the diameter at the serving was just under 1/8" which would make the actual diameter of the string closer to 3/32" or maybe a bit under.  If I was making a flight string I would bring the strength down by 100# which would lighten it's physical weight as well as its diameter