Harken 57mm Carbo Double Ratchamatic
The Carbo Ratchamatic is a
load-sensing ratchet block that rolls freely in both directions under
low loads automatically engages the ratchet as loads increase.
Shifting between ratchet and light-air modes
Unloaded main and jib sheets run freely
during mark roundings as asymmetrical spinnakers free instantly during
Ratchet engagement may be adjusted to a
higher or lower load according to strength and sailing style.
Main / Jib Sheets
Sheave: 57 mm
Length: 116 mm
Weight*: 204 g
Shackle pin Dia.: 6 mm
Max line: 10 mm
Max working load: 340 kg
Breaking load: 851 kg
* Weight with shackle
**Includes RH fasteners and mounting pad.
***Maximum working loads and breaking loads
for blocks based on cam strengths.