SOLUTIONS FOR TODAY S SAILORS J/111 TUNING GUIDE US ONE DESIGN VERSION

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Edward Cobb
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1 SOLUTIONS FOR TODAY S SAILORS J/111 TUNING GUIDE US ONE DESIGN VERSION

Contents Tracking the Rig Tune...3 Calibration...3 Setting Up the Rig...4 Tuning Guide...5 Mainsail Trim Adjustments...6 Headstay Adjustment...6 Jib Trim...8 Spreader Marks.

North class representatives and personnel have invested a lot of time to make this guide as helpful as possible for you.

North has become the world leader in sailmaking through an ongoing commitment to making sails faster, lighter and longer lasting. We are equally committed to working as a team with our customers.

2 Contents Tracking the Rig Tune...3 Calibration...3 Setting Up the Rig...4 Tuning Guide...5 Mainsail Trim Adjustments...6 Headstay Adjustment...6 Jib Trim...8 Spreader Marks...8 In-Hauler and Jib Car Settings...8 Advanced CSD Sail Analysis...9 We hope you enjoy your J/111 Tuning Guide. North class representatives and personnel have invested a lot of time to make this guide as helpful as possible for you. Tuning and trim advice offered here have been proven over time with top results in the class. North has become the world leader in sailmaking through an ongoing commitment to making sails faster, lighter and longer lasting. We are equally committed to working as a team with our customers. As always, if you have any questions or comments we would love to hear from you. Please contact your CSD class representative. Sincerely, Ken Read, President North Sails Group Rig Plan...14 Worldwide Sail Care...15 Updates North Sails is constantly refining tuning techniques and rig settings as we and our customers gain experience in individual classes. This information is shared among North staff worldwide. While this Tuning Guide provides a giant step toward achieving competitive speed in your class, be sure to contact your North representatives: Perry Lewis at perry.lewis@northsails.com Seadon Wijsen at seadon.wijsen@northsails.com to learn about the latest J/111 tuning developments. 2

The J/111 is a relatively light boat which makes it very receptive to positive trimming.

Having the weight in the right place is crucial. In simple terms, keep the weight out of the back of the boat both up and downwind and hike very hard to see visible gains made on the water.

conditions each day. The top teams will adjust this between races. This will make a huge difference to your sail setup and ultimately your boat speed around the track.

power on. Take your rig tune seriously. Keep whoever adjusts the rig the same from the beginning to the end and you will be far more accurate all season long.

3 The J/111 is a relatively light boat which makes it very receptive to positive trimming. It is imperative to have the sail trim spot on but also the fore and aft weight trim correct and whichever team does this the best will be rewarded with the best boat speed. Having the weight in the right place is crucial. In simple terms, keep the weight out of the back of the boat both up and downwind and hike very hard to see visible gains made on the water. Up to 10 kts the J/111 is always looking for more power so keep the sails powered up, focus on building speed efficiently out of transitions (tacks, gybes, ducks and mark roundings) and don t over trim or you can easily kill the speed. Tracking the Rig Tune Once the rig is tuned to our North Sails BASE setting (see J/111 Tuning Guide on page 5) you should be aiming to, at the bare minimum, change the forestay for the prevailing conditions each day. The top teams will adjust this between races. This will make a huge difference to your sail setup and ultimately your boat speed around the track. In heavy air winding the forestay shorter will enable you to get enough backstay on and bend the rig efficiently and in light air lengthening it will enable you to keep depth in the sails to keep the power on. Take your rig tune seriously. Keep whoever adjusts the rig the same from the beginning to the end and you will be far more accurate all season long. It is one item on our list we can get right before we leave the dock. Equipment Requirements Loos Gauge RT-10M (V1 and D1 shrouds) Loos Gauge PT-2 (D2 shrouds) 30m (100') tape measure (forestay pin-to-pin) 5m (16') steel tape measure (mast heel) Rig spanners (adjustments) Calibration We strongly recommend you calibrate every available moving piece onboard the J/111 and then take notes of which settings are fast in which conditions, this is the only way of accumulating good data for your boat and being able to repeat fast settings. Vang Tension Jib Halyard Tension Backstay Ram 3

Setting Up the Rig Only once you ve calibrated everything and recorded the data strictly can you then be

Headstay Set headstay length (center of upper pin to center of lower pin = 15.13 m [49.64']).

cheat sheet for different wind strengths with the following information: Jib halyard tension Backstay

4 Setting Up the Rig Only once you ve calibrated everything and recorded the data strictly can you then be confident in how to repeat a fast setting. Headstay Set headstay length (center of upper pin to center of lower pin = m [49.64']). Top Headstay Pin All of the settings are crucial at the top level but a bare minimum you should create a cheat sheet for different wind strengths with the following information: Jib halyard tension Backstay position Jib car position In-hauler setting Jib sheet location Spreader mark number Mast Step position Measure 44 cm (1.44') from bulkhead to forward face of mast (not including base trim). Bottom Headstay Pin 4

5 J/111 Tuning Guide This guide is based on the experience of a number of North Sails experts, owners of J/111s and their trimmers. It is just a guide. We all know ours is the most complicated sport in the world and any number of factors can affect our performance. Use these numbers as your starting point from which you can improve, use your own calibrations and settings to give you and your team an edge going forward. BASE Settings with Roller Furling Sails Selection Rig Position Mast Tune TWS Jib Asym Butt HS V Loos 0 > 6 kts LM-3, LMi-1 1.5A 36 g 44 cm (1.44 ) m (49.64 ) 45-6 Turns D1 Loos Hand tight Turns -5 D2 Loos Hand tight 6 > 8 kts LM-3, LMi-1 1.5A 36 g 44 cm (1.44 ) m (49.64 ) BASE 8 > 10 kts LM-3, LMi-1 1.5A 36 g 44 cm (1.44 ) m (49.64 ) > 12 kts LM-3, LMi-1 2A 40 g 44 cm (1.44 ) m (49.64 ) > 14 kts MH-2, MHi-1 2A 40 g 44 cm (1.44 ) m (49.64 ) > 16 kts MH-2, MHi-1 2A 40 g 44 cm (1.44 ) m (49.64 ) > 18 kts MH-2, MHi-1 2A 40 g 44 cm (1.44 ) m (49.64 ) > 20 kts MH-2, MHi-1 2A 40 g 44 cm (1.44 ) m (49.64 ) kts HWJ-2, HWJi-1 2A 40 g 44 cm (1.44 ) m (49.64 ) RT-10 RT-10 PT-2 Turns Hand tight Some top teams are adjusting their headstay prior to leaving the dock using 3 settings. TWS Headstay Measurement Headstay Turns 0 > 9 kts m (49.70 ) -6 turns 9 > 16 kts m (49.64 ) BASE 16+ kts 18 m (49.48 ) 16 turns To adjust your headstay, start by using the Loos Gauge numbers at each wind speed (examples below). TWS Headstay Measurement V Loos D1 Loos D2 Turns 6 > 8 kts m (49.70 ) > 14 kts m (49.64 ) RT-10 RT-10 5

Mainsail Trim Adjustments Traveller Upwind, keep the boom on center line using the traveller. Traveller is a coarse control for heel angle and twist control.

In 10+ kts on the J/111 the mainsail foot should be just tight along the top of the boom, this will need extra tension as the breeze increases.

Headstay Adjustment The extent of traveller movement shown at left. Backstay This controls mainsail depth.

If you have too much Backstay Use backstay you will see 0-4 kts 0-25% backstay over-bend creases in the mainsail from clew to luff in the lower third of the mainsail.

4-8 kts 8-12 kts 12-16 kts 16+ kts 25-50% backstay 50-80% backstay 80-90% backstay + / - Max backstay If you can t flatten the mainsail enough with backstay because

Cunningham Only use cunningham to de-power the mainsail in over 16 kts of windspeed.

6 Mainsail Trim Adjustments Traveller Upwind, keep the boom on center line using the traveller. Traveller is a coarse control for heel angle and twist control. Outhaul Controls depth in base of mainsail. Flatter water = tighter outhaul. Chop and waves = looser outhaul. In 10+ kts on the J/111 the mainsail foot should be just tight along the top of the boom, this will need extra tension as the breeze increases. In under 10 kts upwind you can ease the outhaul but no more than a fist-width gap between the boom and mainsail at the mid-point. Headstay Adjustment The extent of traveller movement shown at left. Backstay This controls mainsail depth. As the breeze builds, use more backstay to flatten the mainsail, use less backstay in choppy seas to help power up the boat. If you have too much Backstay Use backstay you will see 0-4 kts 0-25% backstay over-bend creases in the mainsail from clew to luff in the lower third of the mainsail. Ease the backstay off until they are just not showing. 4-8 kts 8-12 kts kts 16+ kts 25-50% backstay 50-80% backstay 80-90% backstay + / - Max backstay If you can t flatten the mainsail enough with backstay because the ram is maxed out then you have the wrong rig tune and you should shorten the forestay. Cunningham Only use cunningham to de-power the mainsail in over 16 kts of windspeed. Do not use it to take out small horizontal creases in the luff, if you are doing that then your main halyard has slipped. To make faster adjustments we suggest changing the original bolts to something easier to remove. Above: 2" eye bolts are used. 1. Remove the 2 bottom drum bolts. 2. Remove the 3 foil screws. 3. Remove the pre-feeder and let the foil gently rest on top of the upper roller swivel. Remove the 3 screws that hold the pre-feeder and foil firmly in place. Take care, these screws can easily fall in the water! After the screws and pre-feeder have been removed the foil will drop down to the top of the headswivel which must be at the tack for this adjustment. 6

4. Using a forward halyard attached to the jib tack fitting slowly raise the drum and entire foil above the trunbuckle. 5.

Lower the furling unit back into place and reverse steps 1, 2 and 3. Take care not to drop the 2 plastic inserts overboard.

This red line is the maximum height you need to raise the bottom of the drum.

7 4. Using a forward halyard attached to the jib tack fitting slowly raise the drum and entire foil above the trunbuckle. 5. Turn the turnbuckle the number of turns you require. 6. Insert and tighten new zip-ties. 7. Lower the furling unit back into place and reverse steps 1, 2 and 3. Take care not to drop the 2 plastic inserts overboard. These are washers that slide between the drum base and the flange on the headstay stem fitting. This red line is the maximum height you need to raise the bottom of the drum. Cut the headfoil to this length when hoisted like this with the turnbuckle at it s shortest adjustment length. It is necessary to use vice-grips on the barrel of the headstay. There are no flat spots on the barrel for a wrench. Use zip-ties to stop the turnbuckle from spinning. This is quicker for the adjustment process. 7

Jib Trim Jib Sheet Coarse control for leech tension and slot shape. Jib Halyard Sets the sail depth and draft position. Increase halyard tension incrementally as the breeze increases.

In-Hauler Used in conjunction with the jib car for slot shape and power control. Backstay Sets forestay sag to control depth in the entry of the jib.

White tape on the spreaders should be in the following locations: Top Spreader n 710 mm (2.33') outboard from mast. Bottom Spreader n 860 mm (2.82') outboard from mast. n 1060 mm (3.

17 ) from centerline (at handrail) 700 mm (2.

8 Jib Trim Jib Sheet Coarse control for leech tension and slot shape. Jib Halyard Sets the sail depth and draft position. Increase halyard tension incrementally as the breeze increases. Jib Car Controls sheeting angle and depth in the base. Car forward in light air to add depth and power, car aft in heavy air for flatter base to reduce power. In-Hauler Used in conjunction with the jib car for slot shape and power control. Backstay Sets forestay sag to control depth in the entry of the jib. Spreader Marks We recommend that you put marks on the spreaders so that you can repeat the trim settings easily. White tape on the spreaders should be in the following locations: Top Spreader n 710 mm (2.33') outboard from mast. Bottom Spreader n 860 mm (2.82') outboard from mast. n 1060 mm (3.48') outboard from mast. In-Hauler and Jib Car Settings Code 1 = LM Code 2 = MH Code 3.5 = HWJ In-Hauler Settings 600 mm (1.97 ) from centerline (inside handrail) 660 mm (2.17 ) from centerline (at handrail) 700 mm (2.30 ) from centerline (outside handrail) If the helm is struggling to build speed because of the sea-state you need to ease the in-hauler outboard to allow the bow to come down. In very flat water you can in-haul tighter for increased pointing. In heavy air, if you see too much backwind in the mainsail, ease the in-hauler outboard. If you have overstood the windward mark, your first control to ease is the in-hauler so the helm can be fast in a bow-down mode. Code 1 = LM Code 2 = MH Code 3.5 = HWJ Jib Car Settings 4950 mm (16.24 ) from tack 5050 mm (16.57 ) from tack 4750 mm (15.58 ) from tack 8

9 Advanced Sail Sail Analysis Software File File Name: Name: Main-1 Main-1 OUS OUS MB MB forward forward 8 tws.jp 8 tws.jp Advanced CSD Sail Analysis 3DL Mainsail 8TWS < Comments > 2014/01/31 11:05:53 < Comments > Hull J Spaceman Spiff TWS /01/31 RUD 11:05:53 Mast Hull J Spaceman Spiff TWS TWA 8 RUD TAB Mast Helm TWA AWS TAB LWY Helm AWS LWY Main AWA FSTY Main AWA FSTY Genoa Genoa TWD TWD HEEL HEEL HDG HDG BSP BSP Mast butt Mast forward butt forward DRAFT DRAFT Ver.5.610, Ver.5.610, Copyright Copyright Copyright (North (North Sails (North Japan) Sails Sails Japan) Japan) TWIST TWIST EXIT 7 1 EXIT 7BACK_CAM SailType; MAIN Blue... Actual SailType; MAIN Blue... Actual Height DRAFT TWIST EXIT FORE_CAM BACK_CAM Height DRAFT TWIST EXIT FORE_CAM BACK_CAM

< Comments > 2013/11/20 16:00:18 Hull Velocity TWS 11 RUD Mast TWA TAB Helm AWS LWY Main 3Di CSD AWA FSTY Base Genoa M/H TWD HEEL HDG BSP 3Di Mainsail 18TWS Ver.5.

10 < Comments > 2013/11/20 16:00:18 Hull Velocity TWS 11 RUD Mast TWA TAB Helm AWS LWY Main 3Di CSD AWA FSTY Base Genoa M/H TWD HEEL HDG BSP 3Di Mainsail 18TWS Ver.5.610, Copyright (North Sails Japan) 5 DRAFT 2 TWIST EXIT 8 FORE_CAM SailType; MAIN Blue... Actual Height DRAFT TWIST EXIT FORE_CAM BACK_CAM

11 3Di L/M 8TWS < Comments > 2013/09/24 15:02:30 Hull Kashmir TWS 8 RUD Mast TWA TAB Helm AWS LWY Main 3DL AWA FSTY Base Genoa L/M 3Di CSD TWD HEEL HDG BSP Ver.5.610, Copyright (North (North Sails Sails Japan) 2 4 DRAFT TWIST EXIT 10 FORE_CAM SailType; HEAD Blue... Actual Height DRAFT TWIST EXIT FORE_CAM BACK_CAM

12 Advanced Sail Analysis Software < Comments > 2014/01/31 11:05:53 Hull J Spaceman Spiff TWS 8 RUD Mast TWA TAB Helm AWS LWY Main AWA FSTY Genoa TWD HEEL HDG BSP File Name: Test LM with re cut 8 tws.jpg 3DL L/M 8TWS Mast but forward DRAFT EXIT TWIST Ver.5.610, Copyright (North Sails Japan) BACK_CAM SailType; HEAD Blue... Actual Height DRAFT TWIST EXIT FORE_CAM BACK_CAM

3Di M/H 18TWS 1 5 5 4 4 DRAFT < Comments > 2013/06/04 10:44:06 Hull J/111 Mast Helm Main Genoa 3Di Med/Hvy 3Di TWS 18 TWA AWS AWA TWD HDG BSP Rig Tune +4 from base, as per tune guide 2013 RUD TAB LWY

13 3Di M/H 18TWS DRAFT < Comments > 2013/06/04 10:44:06 Hull J/111 Mast Helm Main Genoa 3Di Med/Hvy 3Di TWS 18 TWA AWS AWA TWD HDG BSP Rig Tune +4 from base, as per tune guide 2013 RUD TAB LWY FSTY HEEL Ver.5.610, Copyright (North Sails Japan) EXIT TWIST FORE_CAM SailType; HEAD Blue... Actual Height DRAFT TWIST EXIT FORE_CAM BACK_CAM

14 Rig Plan 14

15 Worldwide Sail Care At North Sails, we view each sail purchase as the beginning of a long and rewarding relationship. We base this expectation on a strong service commitment that includes preventive maintenance, sound advice, education and expert repairs. Your nearby North loft offers a wide range of services including... Annual checkover Winter storage n Retrofitting Educational Sail washing Sail tune-up n Seminars resources North Sails is a network of more than 100 lofts in 34 countries around the world. Each offers knowledgeable, friendly, personal sales and service. Our size and worldwide reach also means North has the world s most expansive sailmaking database. It would be hard to find a sailboat for which we cannot make a fast, durable and long lasting sail. Visit the North Sails Class Sail Development website at: J/111 Class website:

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