Santana 20 Tuning Chart

Product catalog summary

Overview: This document provides a tuning chart for the Santana 20 sailboat, detailing adjustments based on wind strength. Key areas include shroud tension, sail selection, and various sail adjustments to optimize performance.

Wind Strength and Shroud Tension: The chart categorizes wind strength into four ranges: 0-5 knots, 6-12 knots, 13-18 knots, and 19+ knots. Shroud tension is measured using a Loos Model A Tension Gauge. For upper shrouds, tension remains at 33 for winds up to 18 knots, increasing to 35 for winds above 19 knots. Lower shrouds start at 33 and increase progressively to 37.

Inverse Pre-Bend: Adjustments to the aft lower shrouds create inverse pre-bend in the mast. This ranges from straight in light winds to 4 inches in winds above 19 knots.

Jib and Genoa Selection: The Genoa is used in winds up to 12 knots, with the jib preferred in stronger winds. The Genoa foot distance from the shrouds varies from 3-4 inches in light winds to tight in stronger conditions.

Sail Adjustments:

Jib Halyard Tension: Should be smooth except for slight wrinkles in light winds.
Mainsail Cunningham: Loose in light winds, smooth in stronger conditions.
Outhaul: Adjusted from 1-2 inches in light winds to tight in stronger winds.
Upwind Vang Tension: No vang in winds up to 12 knots, with increasing tension and batten twist in stronger winds.
Traveler Position: Adjusted from +2 inches above centerline in light winds to 0 to -8 inches in strong winds.
Backstay Tension: Ranges from loose in light winds to maximum in strong winds.

Conclusion: This tuning chart provides detailed guidance for optimizing the Santana 20's performance across varying wind conditions, focusing on precise adjustments to shroud tension, sail selection, and sail trim.

Catalog excerpts

RACING GUIDES www.ullmansails.com Santana 20 Tuning Chart Wind Strength in Knots: 0-5 6-12 13-18 19+ Uppers: 33 33 33 35 Lowers: 33 35 35 37 Inches of Inverse Pre-Bend (aft lower adjustments) Straight 1-2" 3-4" 4" Jib Selection Genoa Genoa Jib Jib 3-4" 1-2" Tight See 'Genoa Trim' Smooth Wrinkles Smooth Smooth Loose Wrinkles Smooth Smooth 1-2" 1/2" Tight Tight No Vang No Vang 10-15º 15-20º +2" Center 0 to -3" 0 to -8" Loose Medium Tight Maximum Shroud Tension (Loos Model A Tension Gauge) Genoa Foot (distance from shrouds) Jib Halyard Tension Mainsail Cunningham Outhaul (inches from band) Upwind Vang Tension & Degree of Upper Batten Twist Traveler (inches above/below centerline) Backstay Tension

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Santana 20 Tuning Chart

Santana 20 Tuning Chart

Catalog excerpts

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