The Carbo Ratchamatic is a load-sensing ratchet block
that rolls freely in both directions under low loads and
automatically engages the ratchet as loads increase.
Shifting between ratchet and light-air modes is seamless. Unloaded main and jib sheets run out freely during mark
roundings and asymmetrical spinnakers free instantly
Ratchet engagement may be adjusted to a higher or lower
load according to strength and sailing style. The Ratchamatic cheek block mounts on either port or starboard. The holding power of the 57 mm is as high as 10:1. The 75 mm is up to 15:1.
For the ultimate system, mount a Ratchamatic block on the boom
above a cockpit-mounted switchable ratchet to allow the mainsheet to run freely in light air and to double holding
power in heavy air.
Use the 2634 with a 402 or 403 swivel arm for a versatile
two-speed mainsheet system.