2688
75mm Carbo Ratchamatic Flip Flop Block
Small Boat Flip-Flop blocks pivot around the line axis to keep the line close to the deck. Hinged construction allows for various lead angles.
Ratchamatic block versions roll freely in both directions under low loads and automatically engage a ratchet mechanism as loads increase, giving sailors a holding power of up to 15:1. The ratchet engagement can be adjusted to a higher or lower load depending on the sailor’s strength, sailing style and system usage.
Technical specifications · Harken 2688
| Sheave diameter | 75 mm |
|---|---|
| Width | 64 mm |
| Length | 143 mm |
| Height | 89 mm |
| Weight | 304 g |
| Maximum line diameter | 12 mm |
| Maximum working load | 340 kg |
| Breaking load | 680 kg |
For versions with a cam cleat, the stated loads are limited by the strength of the cleat.