Bowstring Material



We use only first quality HMPE - SK75, SK78, SK90 and SK99 Dyneema®, or Type 1000 Spectra. We also use Vectran for high heat and creep resistance.   We produce material for making bowstrings. Our major customers are bowmakers and stringmakers. We do not make finished bowstrings.






452X® Bowstring
67% SK75 Dyneema®, 33% Vectran. Good arrow speed. More strand count flexibility and better looking two color strings. No creep; completely stable. Available in all colors.

Recommended strands: 20-24 for Compound Bows
Approximate feet per pound waxed: 8,800
Spool sizes: 1/8 lb., 1/4 lb., or 1 lb.


X-99

X-99® Bowstring
80% SK99 Highest Quality Dyneema - 20% Vectran. All the benefits and performance of BCY-X. When compared to BCY-X, the smaller diameter of X-99 means more strands are needed for a finished Bowstring (+2/4). Good for Compound Bows and Recurves. Available in solid colors.

  • No Creep
  • Good Arrow Speed
  • Low fuzziness
  • High abrasion resistance
  • Patented Construction
Recommended strands: 26-28 for Compound Bows
Approximate feet per pound waxed: 11,000
Spool sizes: 1/8 lb., 1/4 lb., or 1 lb.


Mercury Bowstring Spool

Mercury Bowstring
  • Made 100% from the #1 quality Dyneema fiber - SK99
  • Low Creep
  • Smaller diameter for a smoother, rounder string
  • Higher strength, high durability
Available in solid colors.

Recommended strands: 32-34 for compounds, 2 or 4 less for recurves
Approximate feet per pound waxed: 13,000
Spool sizes: 1/8 lb., 1/4 lb., or 1 lb.




8125® Bowstring
100% SK75 Dyneema® fiber. Highest speed and higher durability; preferred by some compound shooters - particularly 3D. Also the choice of Olympic style recurve shooters worldwide. Available in all colors.

Recommended strands: 18-22
Approximate feet per pound waxed: 8,200
Spool sizes: 1/8 lb., 1/4 lb., or 1 lb.




DynaFLIGHT 97® Bowstring
The original high strength Dyneema® bowstring - 100% SK 75; very durable, low creep. Used for Crossbows, Compounds, Recurves and Youth Bows. Available in solid colors.

Recommended strands: 14-16
Approximate feet per pound waxed: 6,700
Spool sizes: 1/8 lb., 1/4 lb., or 1 lb.


450 Plus

450 Plus Bowstring
The original Dyneema® / Vectran blend. No creep; expect consistency and no peep rotation. A good option for compound cables. Available in some solid colors.

Recommended strands: 12
Approximate feet per pound waxed: 4,500
Spool sizes: 1/4 lb., or 1 lb.


652 Spectra

652 Spectra Bowstring
Spectra bowstring, same as the original Fast FlightTM - still the choice of many recurve shooters worldwide. Available in solid colors.

Recommended strands: 18-22
Approximate feet per pound waxed: 8,200
Spool sizes: 1/8 lb., 1/4 lb., or 1 lb.


B55 Bowstring

B55 Bowstring
100% polyester similar to Dacron but with better durability and very low stretch. Primarily used for recurves, but also used on older compound crossbows and traditional bows without reinforced limb tips. Available in solid colors.

Recommended strands: 12-16 for recurves
Approximate feet per pound waxed: 4,300
Spool sizes: 1/4 lb., or 1 lb.




Colors available: A range of colors is available for all materials - please see our Bowstring Color Chart.

Comparison to Brownell Bowstring: BCY products are made in the U.S.A., and we have prepared a document that compares BCY Bowstrings with those made by Brownell. You can download that document here. Note that these comparisons were made with material being produced by Brownell in the USA. Now that Brownell is producing outside of the USA, we cannot be sure if these comparisons are still accurate.

Bowstring Specifications: We show the approximate feet per pound, so string makers can get an idea of how many finished strings can be built from a spool. Due to variables in the manufacturing process, we cannot guarantee exact lengths, particularly in fluorescent colors.

Breaking Strengths: We no longer publish breaking strengths because discrepancies occur, due to different test methods. We will provide minimum breaking strength information upon request. It should be noted that all modern materials far exceed the strength required to perform satisfactorily as a bowstring material.

Bowstring Diameter / Recommended Number of Strands: All bowstring material is relatively flat in a single strand, so it is not appropriate to publish a diameter of the individual strand. The important issue is how many strands are required to give a satisfactory nock fit, which is what our recommendations show. These numbers can vary according to nock type / size and personal preference. Recommended strands are for typical modern compound bows. Plus or minus two strands is normal. Recurve bows normally use two fewer strands.

BCY manufactures and supplies products in accordance with these specifications. If used correctly, the material will serve the purpose for which it was intended - a bowstring or a serving material. All products we manufacture are extensively tested. We offer a full range of material for the archery market. There are many variables which can significantly affect performance of the bowstring material. Some examples include: Number of strands and twists, type of serving material, tightness of serving material, width of cam grooves on bow, amount of lubrication, type of release, condition of cam wheel, yoke system on cables, degree of string maintenance. As BCY cannot control these variables, BCY cannot accept responsibility for problems arising from strings, cables or servings.

8125, 452X, DynaFLIGHT 97, and X-99 are registered trademarks of BCY
Dyneema is a registered trademark of DSM
Dacron was a registered trademark of Dupont
Fast Flight was a registered trademark of Brownell & Co.




Manufactured in the USA

BCY Bowstring
155 Industrial Park Road
Middletown CT 06457
USA

Telephone: (860) 632 - 7115



NASP