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Ullman J/24 Rig & Sail Tuning Guides
Sail Trim Guides
Ullman J/24 Tuning Guide
How to optimize power and pointing
This guide will provide you with the basics of tuning a J/24. Settings may vary on your sailing style, crew weight and your sailing conditions. We strongly recommend you experiment and find out which settings work best for you.
- Mast Set Up
- Rig Tension
- Genoa Trim
- Jib Trim
Printable Guide
J/24 Recommended Mast Setup
Rig Component |
Measurement |
|---|---|
| Mast Pre-Bend: Measured at the spreaders | 1.75 inches |
| Mast Butt Placement | 1 to 2 inches aft of neutral |
| Forestay Tenstion with the Rig at Light Setting 20/15 | 2 to 3 fingers between the Loos guage and the forestay |
| Spreader Deflection | 150 mm to 160 mm |
J/24 Rig Tension
| Wind Strength | 3-7 | 5-10 | 8-12 | 10-14 | 14+ |
|---|---|---|---|---|---|
| Upper Shrouds | 20 | 23 | 24 | 27 | 31 |
| Lower Shrouds | 15 | 18 | 21 | 24 | 29 |
J/24 Genoa Trim Settings
| Wind Strength | 0-5 | 6-10 | 11-15 | 16-20 | 21+ |
|---|---|---|---|---|---|
| Foot from Shroud | 6-8 in. | 6 in. | 3 in. | touching | N/A |
| Leech in from Spreader Tip | 6-8 in. | 6-8 in. | 6-8 in. | 6-8 in. | N/A |
Jib Trim Settings
| Wind Strength | 16-20 | 21+ |
|---|---|---|
| Leech in from Spreader Tip | 2-4 in. | 2 in. outboard of spreader tip |
J24 Tuning Guide