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Author Message   Mike Bergmann Unregistered guest Rating: N/A Votes: 0 Posted on Sunday, August 17, 2003 - 12:36 am:    I just updated my mainsheet to a gross/fine system and it works great in light and heavy air. I have a 4:1 gross trim and a 3:1 fine trim for a total of 12:1. The entire system is mounted on the original traveler car. Nobody makes a spring big enough to hold this up so I wrapped some canvas-backed material around the shackles and held it in place with two hose clamps. This keeps the blocks from tipping over and jamming. This system requires a Lewmar 80 series fiddle block with ratchet and cam cleat arms for the gross trim. There is a Lewmar 60 series fiddle block with ratchet (optional) and cam cleat arms for the fine trim, and this is mounted on the cam cleat arms of the gross trim block (the hole is already there). A Lewmar 60 series single block with becket is attached to the end of the gross trim coming down from the boom. The system can use the original double block on the boom or you can get a new one. Do not use a fiddle block on the boom for this system. The system needs about 75 feet of 3/8" line for the gross trim and 15 to 20 feet of 5/16" line for the fine trim. About 6 years ago I added Harken’s double traveler blocks for 4:1 traveler control - that is much better than the original 3:1.

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