The Radial winch drum’s gripping surface is shaped for each winch size and drum material and features diagonal ribs (rather than textured abrasive materials) to maximize gripping power and greatly reduce line wear. The self-tailing mechanism on the winch means that one crew member can quickly and easily trim or raise sails.
| Material | Aluminum |
| Configuration | Self-tailing |
| Speed | 1 |
| Drum Ø (mm) | 73 mm |
| Drum Ø (in) | 2 7/8 in |
| Base Ø (mm) | 137 mm |
| Base Ø (in) | 5 3/8 in |
| Height (mm) | 148 mm |
| Height (in) | 5 13/16 in |
| Weight (kg) | 2.4 kg |
| Weight (lb) | 5.3 lb |
| Line entry height (mm) | 61 mm |
| Line entry height (in) | 2 3/8 in |
| Minimum line Ø (mm) | 6 mm |
| Minimum line Ø (in) | 1/4 in |
| Maximum line Ø (mm) | 12 mm |
| Maximum line Ø (in) | 1/2 in |
| Fastener circle (mm) | 110 mm |
| Fastener circle (in) | 4 3/8 in |
| Fasteners (mm) | 6 SH mm |
| Fasteners (in) | 1/4 SH in |
| Number of fasteners | 5 |
| Gear ratio – 1 | 2.76 |
| Power ratio – 1 | 19.20 |
| Available power | Manual |
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