*mynauticexpo

Catalogs
Marlow Ropes
D2 RACING 78 & D2 GRAND PRIX 78

D2 RACING 78 & D2 GRAND PRIX 78

Product catalog summary

Applications: The D2 Racing 78 and D2 Grand Prix 78 ropes are suitable for various marine applications including halyards, sheets, guys, reefing lines, runner-tails, control lines, out/downhauls, vang, and furlers.

Material: The core is made from Dyneema SK78, a high-modulus polyethylene (HMPE) known for being lightweight, strong, and resistant to chemicals and UV. It has low stretch and zero water shrinkage, with very low creep compared to SK75. The D2 Racing 78 cover is made from polyester, offering good abrasion and UV resistance. The D2 Grand Prix 78 cover is a Technora/Polyester blend, providing excellent abrasion and heat resistance.

Construction: The ropes feature twisted fibre construction for improved abrasion resistance and a 12-strand braided construction for enhanced strength and longevity. The 24-plait braided cover protects the core from dirt and abrasion. The D2 Grand Prix 78 offers a high-strength, lightweight, and heat-resistant option, while the D2 Racing 78 is versatile for all onboard applications.

Performance: The ropes exhibit typical working elongation of 0.51% at 10% of break load and 0.89% at 20% of break load, with a total elongation to break of 3.60%.

Terminations: Spliced eye termination is recommended, with specific guidelines for splice length and diameter increase.

Properties: The ropes have a relative density of 1.15, excellent chemical resistance, good UV resistance, and specific melting points for core and cover materials. The critical temperature for the core is 80°C, beyond which strength loss occurs.

Disclaimer: Marlow Ropes Ltd provides this information without warranties and is not liable for damages resulting from the use of these guidelines. Specifications may change without notice.

Catalog excerpts

DATASHEET D2 RACING 78 & D2 GRAND PRIX 78 D2 Grand Prix 78 has a Dyneema core and Technora/Polyester blended cover which offers the sailor a high strength, light weight, abrasion resistant, grippy and heat resistant rope. D2 Racing has a polyester cover with Dyneema core and is the ideal option across all applications on board. APPLICATIONS Halyards, Sheets, Guys, Reefing Lines, Runner-Tails, Control Lines, Out/Downhauls, Vang, Furlers MATERIAL CORE: Manufactured from Dyneema SK78 HMPE (High-Modulus Polyethylene) Very light weight - more than 8x lighter than steel wire for a given strength High strength - 80% stronger than steel wire for a given weight Low Stretch - see graph below Good resistance to chemicals and UV Zero water shrinkage Very low creep HMPE fibre Exhibits approximately 20% of the creep experienced by SK75. Further information available. D2 RACING 78 COVER: Manufactured from Polyester Good abrasion resistance Excellent UV resistance D2 GRAND PRIX 78 COVER: Manufactured from Technora/Polyester blend Good UV resistance Excellent abrasion and heat resistance CONSTRUCTION TWISTED FIBRE CONSTRUCTION: Improved abrasion resistance 12 STRAND BRAIDED CONSTRUCTION: Optimised pitch to yarn twist - improves strength and longevity Firmer rounder rope, aids handling Easy to splice Flexible product and easily handled Torque balanced 24 PLAIT BRAIDED COVER CONSTRUCTION: Protects load bearing core from dirt and abrasion Round and firm construction

Open the catalog to page 1

PROPERTIES RELATIVE DENSITY: 1.15 Exact figure varies with diameter CHEMICAL RESISTANCE: Excellent resistance to most chemicals (additional information available on request). UV RESISTANCE: Good MELTING POINT: Core: 140°C - Cover: 260°C (Polyester), 500°C (Technora) CRITICAL TEMPERATURE (CORE): 80°C (prolonged exposure to temperatures over this will result in permanent strength loss) TERMINATIONS SPLICED EYE TERMINATION: 12 strand core splice An allowance of 40x rope diameter should be made for the overall length of the splice. To optimise the efficiency of a soft eye splice (without...

Open the catalog to page 2

D2 RACING 78 & D2 GRAND PRIX 78

D2 RACING 78 & D2 GRAND PRIX 78

Catalog excerpts

All Marlow Ropes catalogs and brochures

Archived catalogs