Tuning Guide for your Ullman J/24 Sail
Mast Setup
| Rig Component | Measurement |
|---|---|
| Mast Pre-Bend measured at the spreaders | 1.75" |
| Mast Butt Placement | 1" to 2" aft of neutral |
| Forestay Tension with the rig at Light setting 20/15 | 2 to 3 fingers between the Loos guage and the forestay |
| Spreader Deflection | 150mm to 160mm |
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 |
Genoa Trim
| Wind Strength | 0-5 |
6-10 |
11-15 |
16-20 |
21+ |
|---|---|---|---|---|---|
| Foot from Shroud | 6-8" |
6" | 3" |
touching |
N/A |
| Leech from Spreader | 6-8" |
6-8" |
6-8" |
6-8" |
N/A |
Jib Trim
| Wind Strength | 16 - 20 |
21+ |
|---|---|---|
| Leech in from spreader tip | 2 - 4" |
2" outboard of spreader tip |
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