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Lightning Tuning Guide

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Lightning Tuning Guide Lightning Tuning Guide For any question you may have on tuning your Lightning for speed, contact our experts: Brian Hayes 203-783-4238 [email protected] Ched Proctor 203-783-4239 [email protected] Zeke Horowitz 203-783-4241 [email protected] Skip Dieball 419-392-4411 [email protected] onedesign.com Follow North Sails on... NORTH SAILS Lightning Tuning Guide Introduction to Tuning, All of your North Lightning representatives 2. MAST STEP POSITION Trimming and Racing your are comfortable with the tuning for both techniques. Should you have any questions For the M-5 Tuning System we suggest Lightning about either style, we urge you to call us. placing the butt of the mast at maximum We are always happy to help you. forward ( the aft edge of the butt of the Proper boat speed depends mostly on mast should be 21 5/8” forward of the constant and consistent adjustments center of the centerboard pin). to your rig and sails. The following The Steps in Tuning measurements are those we have found to For the Fisher Tuning System and for be the fastest settings for your new North The tools necessary for properly tuning Allen boats we suggest placing the butt Sails. We have included information on your boat are a 50 foot tape measure, a at maximum forward. For the Nickels Boats both the tuning of the M-5 and the Fisher small Loos tension gauge (the Model A (both the newer (after 15200) and older) pictured right or the newer PT-1) and a we suggest moving the butt aft one hole design sails. The M-5 is a more backstay sensitive sail, which sails fastest when the permanent marker. in the channel. blocks and the lower shrouds are adjusted corresponding to the change in conditions. For any boat having difficulty developing The Fisher mainsail responds best to the proper prebend (or with the upper mainsheet tension with less emphasis on shrouds further aft (such as the Carson or adjustment to the backstay, the blocks and Lippincott) we suggest moving the butt the lower shrouds. of the mast aft as much as 3/8” to 5/8”. For the Carson and Lippincott hulls the Both tuning techniques have proven to be butt measurement should be only 20 1/4” very fast and we’re confidant that through forward of the pin. following the basic numbers we offer in this tuning guide you’ll find top speed in all conditions. However, as always, your North Lightning team is anxious to help Note: While the newer PT-1 black spring- you any way we can. Feel free to call or loaded Loos gauge is very consistent e-mail us anytime! Good luck and good and works great for checking the shroud sailing! tension on your uppers and lowers, we have not yet been able to use it successfully for the tuning process for the North Sails One Design tuning for the M-5 tuning system. It is important to be able to “zero” the forestay in order to set the proper lower tensions In our new tuning guide we have divided for the various conditions. However, with the Fisher and the M-5 tuning procedures. the Fisher Tuning System either gauge will You will notice after we describe marking work fine. your headstay, placing the butt of your mast and setting the length of your 1. MARK YOUR HEADSTAY. headstay, that the M-5 Tuning System is listed step by step followed by the Lay the forestay along the front of the Fisher Tuning System. Note that the mast and mark where it is even with the techniques used in setting both systems top of the mast band at the gooseneck. are quite different. Please check it over This can be accomplished with the mast carefully! on the ground or stepped with the uppers attached. (See picture on the right) Visit our web site at OneDesign.com for the latest Lightning news and tuning tips. 1 © North Sails One Design. All rights reserved. NORTH SAILS Lightning Tuning Guide 3. ADJUST THE HEAD-STAY LENGTH The M-5 Tuning System B. Pull your backstay until the forestay (Refer to the table below) just registers “0” (using the Model A Loos tension gauge). Hook up your headstay and measure from INITIAL SET-UP your mark that was determined in Step C. Adjust your lower shrouds equally until 1 of the tuning guide to the intersection 1. Allow your mast to lean fully back on they are “0” on the Model A Loos gauge. of the stem and the deck. Adjust your the forestay with no shrouds attached or (If you are sailing in wavy conditions turnbuckle so that it measures as follows: mast blocks in place. Mark your deck on where there is more chop than the wind both sides directly across from the front of should warrant, we suggest tensioning the mast. This is your “0” datum point HEADSTAY TABLE your lowers up to 5 or 6 for increased and the point that will determine your power.) Nickels 44 1/2" mast blocked position in light, medium M-5 New Allen 45’’ and heavy winds. D. With the backstay set as in step B, mark New Nickels 45’’ your backstay where it exits the deck at 2. Attach your upper shrouds to the the transom. Ease the backstay tension Nickels 44’’ forward chain plates and tension them to off until this mark is 5” above the deck on Fisher New Allen 44 1/’’ the class maximum of 250 pounds. Do not the Nickels or 7” on the Allen. Mark this attach the lowers or be sure that they are New Nickels 44 1/2’’ position. Use this mark (5” for the Nickels, very loose. 7” for the Allen) for your very light wind backstay setting when the mast is pre- Note: It is important that the mast is blocked forward as in Step 1. straight in the boat and not leaning or bowing to either side. To verify this, hook a Note: Without the proper backstay tension tape measure to the jib halyard. Measure in light winds the mast will lean much too to the chine below the upper chainplate far forward and there will be too much on each of the boat. This measurement headstay sag. An overabundance of jib luff should be within 1/4” on each side sag will result in the jib leech hitting the and can be adjusted by adjusting the spreader and the shroud no matter how it turnbuckles on either side. is trimmed. The backstay is just tensioned to remove enough sag to keep the jib 3. Attach the lower shrouds to the aft leech off the spreader and the shroud chainplates and tighten them until they when the upper batten is angling just at are just barely hand tight. Check that the the end of the spreader. mast is still straight laterally by sighting up the back of the mast. This adjustment to M-5 MEDIUM WIND SET UP (7-15) the lower shrouds is just initial tuning and will be adjusted later once the blocks are A. Block your mast forward of the “0” placed at the partners. datum point 1” for the Nickels and 1” for the Allen. M-5 LIGHT AIR SET UP (0 - 6 MPH) B. Tension your backstay until the forestay A. Place your mast blocks behind your just barely registers “0” with the Model A Measure from the top of the mark on your mast until the forward edge of the mast is tension gauge. forestay to the joint of the bow and your deck to 1 1/4” forward of your “0” datum point set your forestay length. for the Nickels and 1 1/2” for the Allen. C. Set your lower shrouds equally at 10 for the Nickels and 18 for the Allen. Visit our web site at OneDesign.com for the latest Lightning news and tuning tips. 2 © North Sails One Design. All rights reserved. NORTH SAILS Lightning Tuning Guide M-5 HEAVY WIND SET UP (16 + MPH) It will require a great deal of pressure Note: Important!! Do not re-tighten the to push the mast far enough forward uppers above 190lbs. This reduced tension A. Block the mast 3/4” forward of the “0” to induce the necessary 1 3/4” to 2” is necessary for proper mast bend and is datum point. of positive prebend in the mast at the indicative that you’ve developed proper spreaders. To check this pull your main prebend. B. Pull your backstay until the forestay just halyard down and hold it up against the registers “0”. back of the mast at the gooseneck. The Note: It is important that the mast is distance from the taught halyard wire straight in the boat and not leaning or C. Set your lower shrouds equally at “14”. to the back of the mast at the spreaders bowing to either side. To verify this, hook a should be very close to 1 3/4”. tape measure to the jib halyard. Measure D. Use lots of backstay when you’re sailing to the chine below the upper chainplate to keep the boat flat! Note: With the later model Nickels and on each of the boat. This measurement Allen boats usually the proper prebend will should be within 1/4” on each side be reached while a ½” block is placed in and can be adjusted by adjusting the front of the mast at the deck.
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