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» Trad Gang.com » Main Forums » PowWow » Setting the Record Straight - String Material (Page 1)

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Author Topic: Setting the Record Straight - String Material
LBR
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There's been some controversy over certain string materials and some bows for quite a while. While I know this won't change any warranties and won't sway some opinions, here it is...

I just returned from an event where I was able to spent a good bit of time with, and pick the brain of, Jim Cass. Jim is probably the single most important person in the bowstring fiber industry in the word. He's worked at Sampson Rope for 40+ years, and can tell you anything you want to know about fibers. They supply naval rope to 14 different countries, amongst many other fiber applications. They have almost unlimited resources when it comes to testing, from the greatest minds in the industry to the most high-tech equipment. To say he knows his stuff is like saying the Wensel brothers have killed a deer or two, or Howard Hill was a pretty fair archer.

To get to the point, I was discussing bowstring material with Jim off and on for a few days. The big controversy of late seems to be: what is the amount of elasticity of one material vs. another? The answer is simple, and was re-confirmed to me again last week. The only material on the market that has any degree of elasticity is polyester ("Dacron"). Period. None of the others have any noticeable degree, especially at the shot. Some DO have a degree of elongation/creep, but this happens over time, under a load, and can be affected by higher temps.

Again, this won't change any warranties, might not change any opinions, I just wanted to put it out there for anyone interested.

Chad

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Champion Custom Bowstrings
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T Folts
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Interesting for sure. That is good to know.

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US ARMY 1984-1988

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Butch Speer
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Thanks Chad. pretty interesting stuff.

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God Bless

Butch

Leon Stewart LS 60"50@27
Howatt High-Speed 58" 50@28
Shakespeare Necedah 58" 45@28
Nothing is ever lost by courtesy. It is the cheapest of pleasures, costs nothing, and conveys much.
- Erastus Wiman

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Chad Orde
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Thanks for the report I bet that was a fun meeting for you! Iím an engineer and itís always great to talk to the top of field person and get set straight. Thanks again for sharing.

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Chad Orde
Drifter Traditional Archery
www.DrifterTraditionalArchery.com
Failure is the condiment that gives success its flavor. Truman Capote

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katman
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Thanks for the info Chad. Your right, probably won't change opinions of some but nice to hear info from informed sources.

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shoot straight shoot often

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LBR
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I've known Jim for several years, but generally only get to sit down with him at one or two events a year. He's working on getting me some "official" documentation/references that can be displayed to the public.

I know he's straightened me out on misconceptions that I had. One of the big ones that seems to confuse lots of people is stretch vs. creep. Stretch is elasticity, like a rubber band...elongation that immediately recovers. Creep is elongation that happens much more slowly, over time and under a load, and doesn't fully recover if at all, and certainly not at draw or in the instant a bow goes back to brace after a shot.

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Champion Custom Bowstrings
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Roadkill
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Worth the read thanks. Confirms what i was told. Creep vs stretch is a very important aspect of our sport

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Cast a long shadow-you may provide shade to someone who needs it. Semper Fi

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limbshaker
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So basically the blends with Vectran (?) (like BCY-X) shouldn't be any rougher on limb tips than any other blend without it. Since even straight Dyneema blends don't have any measurable elasticity.

I assume that finished string diameter in the loops could have a bearing on that, so let's just say they all have the same finished diameter in the loops.

I could believe it. Thanks for the info, I'm always interested in stuff like this.

And the BCY-X string you built me hasn't sheared off any limb tips yet! Works great!

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"Leaves are fallin all around..time I was on my way." -Led Zeppelin

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LBR
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Exactly, or if it is more harsh it's not due to elasticity or lack thereof. I've been using BCY-X on a Samick Journey (64" version of the Sage) for going on 7 years I think. Bought it when BCY-X came out, just to test the material. The bow is no worse for the wear, at least not from the string. Shoots great with a good string on it.

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Champion Custom Bowstrings
Trad Gang Sponsor since March 2003--Voted In By Members
Proud Supporter of the Catch-a-Dream Foundation
www.catchadream.org

Bowstring Questions? recurves.com/faqs.html

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limbshaker
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[thumbsup]

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"Leaves are fallin all around..time I was on my way." -Led Zeppelin

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joe vt
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This makes sense to me because I have some bows where putting a Dacron string on makes the bow feel smoother.....elasticity in action.

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~ joe vt >>>~~~~~~~~>

TGMM Family of the Bow

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Orion
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That's sort of what I've been thinking for awhile. Of course, that means that there's really not much difference in the various low stretch materials. Shot in (which doesn't take very long and maybe only a few arrows if the string was properly stretched when made), they'll all perform pretty much the same, though some may creep a bit more than others.

Does that mean I've saved a pile of money by sticking with D-97 and not not chasing/buying every latest iteration of low stretch strings that came along?

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Jasper2
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Not in my opinion Jerry. I may not understand the science behind it, but I do know that every single bow that I used to shoot D97 on, shoots noticeably better with one of the higher grade materials.

I don't know why certain bows prefer certain materials.....but my testing definitely proves this fact time and time again.

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Take care,
Jason

56" Centaur Chimera 50#@27"

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pavan
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What are the elasticity or stretch variations from an endless string to Flemish string? I have been wondering if even the Flemish strings have variations. Like two or three splines of minimal strands versus extra strands with padding or a string that has minimal twists, versus one that needs extra twists that may be needed for brace height adjustments..

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Pavan

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Orion
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Agreed, Jason. I was being somewhat faceteous. A lot of folks over the past few years have reported what they consider noticeable differences between the various low stretch string materials. Has to be something to it.

When I use up my D-97, I'll be trying a few others.

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