MARBLEHEAD WEAVES
Low Aspect Dacron 52/1W70

Width Fabric Warp x Fill Denier Fabric Properties
36" 4.77 150 x 220
  • Only Low aspect line of 1W70 / Fiber 104 available.
  • Marblehead Weaves use the best, most expensive yarns in warp and fill: 1W70 and Fiber 104. Competing fabrics use little or none of these.
  • 5.77, 6.77, 8.77, 9.77, 10.77, 11.77 use Fiber 104 or Performance Fibers 1W70.
  • Other yarns not made in 1W70 or Fiber 104.
  • Marbleheads are the most tightly woven fabrics in the world.
  • For use in highest quality mainsails of 2.5 / 1 aspect ratio or less.
  • In light through medium weights, Marbleheads use close to even denier ratios: 1 / 1.5. In heavier weights, the ratio becomes closer to 1 / 2, and fill yarns are larger for more highly loaded sails. The result is more even crimp, so yarns lock onto each other, and rely more on weave tightness than resin for bias durability.
  • Marblehead weaves require half the resin to achieve a particular bias spec than most high aspect fabrics.
54" 150 x 220
36" 5.77 220 x 220
54" 220 x 220
54" 6.77 220 x 350
54" 7.77 300 x 440
54" 8.77 350 x 570
54" 9.77 350 x 700
54" 10.77 440 x 840
54" 11.77 500 x 1000
54" 14.77 750 x 1500

36" or 48" widths are not stocked, but we offer prompt slitting from most locations on 100 yd orders, or less yardage plus tapes.
During resin impregnation the fabric is immersed in a bath of suspended resin. The resin is absorbed into the yarns. The amount of resin determines the firmness of the finished sailcloth. In the pre-fatigued finish, a super-firm formula of resin is used, which, after curing, is beat up by the steel buttons of the button breaker. The remaining resin is well bonded, and the finish is tough and durable. The finish is so durable that a more severe impact flutter machine was necessary to sufficiently abuse flutter samples so as to show a gap between initial and fluttered sample graph curves on some fabrics.