b'NEW 2801Zircon BlocksThe core of the new Zircon blocks are industrial ceramic ball bearings mounted inside caged races. The cages keep these bearings apart so they dont bunch up, touch, and stop each other. The result is a VERY free-running block with less energy lost to friction. Ceramic is a more familiar name for the metal element Zirconium. Zircon bearings are about 7.5X stronger in compression than stainless bearings. They just dont absorb as much energy before starting to roll. You feel it when you need to ease a sail in very light air. These blocks respond! You feel even the slightest fluctuations in sheet load. When used expertly, that means better sail shape and more speed. Well be the first to admit Zircon blocks are not for everyone. Theyre more efficient than other Harken small boat blocks but more expensive too. Heres how we see it: 1. This is competitive. If we dont offer this level of performance, someone else might. 2. Sailors know best. If they try one and find value, they will buy more. The opposite is also true. Were good with that. 21902191 2192 2193 2195 2196 2197 2198Sheave Max line Maximum BreakingPartLength Weightworking load loadNo. Description in mm in mm oz g in mm lb kg lb kg2190 40 mm Single19/16 40 23/860 0.81 22.9 5/16 8 250 115 750 340 2191 19/16 40 27/873 0.93 26.5 5/16 8 250 115 750 34040 mm Single w/becket219240 mm Double 19/16 40 23/860 1.58 44.7 5/16 8 500 230 1500 680219340 mm Double w/becket19/16 40 27/873 1.68 47.6 5/16 8 500 230 1500 680219557 mm Single 21/457 3 1/8 79 1.58 44.8 3/810 330 150 990 450 2196 57 mm Single w/becket 21/457 3 3/4 95 1.81 51.4 3/810 330 150 990 450 57 mm Double21/457 3 1/8 79 3.05 86.4 3/810 660 300 1980 9002197219821/457 3 3/4 95 3.27 92.7 3/810 660 300 1980 90057 mm Double w/becket40 mm Zircon Cat Mainsheet SystemThis new, more compact Zircon ceramic bearing mainsheet system is a testimonial to the power of collaboration. The previous generation of GP mainsheet system had become the standard among catamaran sailors at the highest levels. But these sailors wondered if we could deliver elite performance in a lighter, tighter package. So, we shrunk everythingexcept what it can do. At the heart are new 40 mm Zircon sheaves it shares with its namesake Zircon blocks. These contribute 30% less aero-disruption and clear the tiller more easily. As before, sailors may swap in any Harken Power 3 ratchet sheave to match weather conditions. They can also choose 10:1, 11:1, or 12:1 purchase and tune the cam cleat angle until it fits their sailing styles perfectly.2801With a new extended head post and the correct strop length, those sheaves can interlock for max mast rake.SheaveMax line Maximum BreakingPartWeightworking load loadNo. Description in mm oz g in mm lb kg lb kg2801 1 9/16 40 31.3 888 5/168 1200 545 3600 163640 mm Zircon Catamaran Mainsheet System1.5x grip 57 mm ratchet17'