REVULL 75 Sail Configuration Guide

Overview

The REVULL 75, designed by I. Toledo, is a performance-oriented 7.5-meter cruiser-racer built for agility and speed. Its design philosophy balances competitive club racing capabilities with the manageable handling required for spirited day sailing.

Rig Specifications & Performance Analysis

The REVULL 75 features a well-proportioned fractional rig designed for efficiency across various points of sail:

• Mainsail Configuration: A P/E ratio of 2.58 indicates a high-aspect ratio mainsail, providing efficient lift and superior upwind pointing.
• Foretriangle Design: The high I/J ratio of 3.68 is optimized for tall, narrow headsails that maximize aerodynamic efficiency.
• Sail Area: A total upwind sail area of 28m² offers a generous power-to-weight ratio for a hull of this displacement.
• Performance: The rig geometry suggests a boat that is close-winded and responsive in light-to-moderate air.

Popular Sail Configurations

Due to the versatile nature of the REVULL 75, sail configurations vary based on the owner's primary use:

• Mainsail: Owners typically utilize full-battened mainsails to support the high-aspect P dimension.
• Headsail: Configurations range from 100% jibs for heavy weather to slightly overlapping genoas for light-air performance.

Key Characteristics

• High-Aspect 2.58 P/E Ratio: Delivers efficient lift and minimizes induced drag for better windward performance.
• Aggressive 3.68 I/J Ratio: Favors tall, high-performance headsails that provide excellent slot-effect control.
• Deep 1.72m Draft: Offers significant righting moment, making the boat stiff and capable of carrying sail in heavier gusts.
• Technical Rig Dimensions: Precise I and J measurements allow for a highly tunable sail plan.

Sailing Considerations

The REVULL 75 requires active mainsail trim to manage its high-aspect ratio efficiently. With a 1.72m draft, the boat remains stable, though its 7.49m LOA makes it sensitive to weight distribution. It is best handled by a crew of 2 to 4 in racing conditions.

Sailmaking Recommendations

For the REVULL 75, we recommend SurgeX membrane sails as the optimal choice for most sailors. SurgeX uses continuous fiber construction where fibers are laid along load paths and embedded in a thin membrane, providing superior shape retention compared to traditional Dacron while being more affordable than premium laminates. The continuous fiber structure means less stretch over time, maintaining the designed sail shape for years.

For racing applications, specify a lightweight SurgeX configuration with minimal base weight to maximize performance. For cruising or day sailing, add a taffeta protective layer on both sides to enhance UV resistance and abrasion protection. Based on the 2.58 P/E ratio, a tri-radial fiber layout works best to handle the vertical loads of the high-aspect mainsail. A typical inventory includes a square-top or high-roach main, a code-zero for reaching, and a versatile J2 jib. With 28m² of sail area, plan to reef the mainsail around 16–18 knots to maintain a flat, fast profile.

Conclusion

The REVULL 75 is a sophisticated platform that rewards precise sail trim and high-quality materials. Explore SurgeX membrane sail options for your REVULL 75 to unlock its full performance potential.