b'Ratchamatic Blocks Ratchet orRatchamatic?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 free2625instantly during jibes.2625. 2680 Ratchet engagement may be adjusted to a higher or lower loadREDaccording 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 toAdjustable ratchet engagement adapts allow the mainsheet to run freely in light air and to doubleblock to a variety of applications.holding power in heavy air.Use the 2634 with a 402 or 403 swivel arm for a versatile two-speed mainsheet system. 2628About Carbo Air blocks: see feature page at beginning of this section. 2684 2626. Eight-faceted, Hard Lube-anodizedRED 2626 aluminum sheave holds line securely.2681 All 57 mm and 75 mm Ratchamatic 2627 blocks are also available with Power3 2683 sheaves which offer holding power options suitable for a variety of wind conditions. In addition, all 57 mm Ratchamatic blocks can be made with HTE (high threshold engage) sheaves to delay ratchet engagement, allowing them to run freely more of the time. 26332682 DN World ChampionshipHarkenSheave Shackle pin Max line Maximum Breaking Holding powerLength Weight wor king load load w/180 wrapPartNo. Description in mm in mm oz g in mm in mm lb kg lb kg 50 lb (23 kg) 57 mm2625 / .RED Single2 1/4571031043/163/810500227200090710:1 4 1/163.75 Single/becket2 1/4574 15/1612543/1653/810500227200010:1 2626 / .RED 113907 26272 1/4574 1/161039.42663/1653/81030013675034010:1 Single/150 Cam-Matic** 2 1/4125 2628Single/150 Cam-Matic/becket**574 15/169.72753/1653/810600272150068010:1 2633Cheek*2 1/4573 1/43.1893/810227200090710:1 83500 75 mm2680Single2 15/16755 3/81371/47/16127503413000136115:1 8.42386 2681Single/becket2 15/16756 1/216592551/467/16127503413000136115:12682Cheek*2 15/16754 1/161036.5184127503413000136115:1 7/16 2683Single/150 Cam-Matic**2 15/16755 7/1613815.54401/467/1630013675015:1 12340 2684Single/150 Cam-Matic/becket**756 1/216515.54401/467/1612600272150068015:1 2 15/16 28 *Includes RH fasteners and mounting pad.**Maximum working loads and breaking loads for blocks based on cam strengths.'