PROFURL IN-BOOM REEFING SYSTEM

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MK 0RCongratulations for the purchase of your PROFURL in-boom reefing furling system.Please read carefully this manual. It will give you to all information for fitting and usingyour system in order to give you many years of dependable service.! TheIMPORTANT WARNING FOR USINGYOUR SYSTEM :PROFURL boom is obviously heavier than a conventional boom.Avoid uncontrolled gibing, specially with strong wind, as you couldpermanently damage your system.Reminder to gibe :1 - take in or winch your main traveller and main sheet2 - turn your boat to gibe3 - gradually release your main traveller and main sheet.You can even better fit a tackle as boom preventer (see drawing).You can also fit a boom brake, but you must not forget to completelyrelease it each time you want to operate your system.2
MK 0RCONTENTSI. PRELIMINARY ....................................................................................................................................... 4I.1 General description ......................................................................................................................... 4I.2 TOOLS NEEDED FOR FITTING .................................................................................................... 6II. PREPARATION .................................................................................................................................. 6II.1 Unfitting the hardware FROM the mast .......................................................................................... 6III. INSTALLATION .................................................................................................................................. 7III.1 DETERMINING THE HEIGHT OF THE GOOSENECK ................................................................ 7III.2 FITTING THE SLIDE SCREWS INTO THE MAST TRACK ........................................................... 7III.3 FITTING THE GOOSENECK ......................................................................................................... 8III.4 FITTING THE HALYARD SPREADER ........................................................................................... 8III.5 ASSEMBLING THE LUFF SECTION & LUFF TRIANGLE & FEEDER .......................................... 9III.6 CUTTING THE BOOM SECTION AND THE MANDREL TO LENGTH ....................................... 14III.6.A How to calculate the length of the boom SECTION. ............................................................. 14III.6.B Cutting the mandrel (11F) to length ....................................................................................... 16III.6.C Fitting the mandrel onto the boom ......................................................................................... 16III.7 Fitting the boom onto the gooseneck............................................................................................ 17III.8 FITTING THE BOOMVANG HOUND AND THE BOOMVANG .................................................... 18III.9 FITTING OF THE LUFF TRIANGLE ON THE MAST ................................................................... 19III.10 ADJUSTING THE POSITION OF THE MAINSHEET BALES (1) ............................................ 19III.11 INSTALLATION OF THE CONTROL LINES TO THE COCKPIT ............................................. 20IV. FITTING THE MAINSAIL ................................................................................................................. 21V. ADJUSTMENT OF THE BOOMVANG ANGLE TO THE MAST ...................................................... 23VI. USING THE PROFURL IN-BOOM REEFING SYSTEM .................................................................. 23VI.1 Rules of thumb : ............................................................................................................................ 23VI.2 LIMITS FOR USING THE SYSTEM IN RELATION WITH APPARENT WIND ............................ 24VII. WARRANTY ..................................................................................................................................... 25VIII. MK0R SPARE PARTS LIST ............................................................................................................. 26IX. MAINSAIL DESIGN SPECIFICATIONS ................................................. 28IX.1 GEOMETRY ................................................................................................................................. 28IX.1.A Luff curve design ................................................................................................................... 28Luff curve: ............................................................................................................................................ 28IX.1.B Foot curve design. ................................................................................................................. 28IX.1.C Roach .................................................................................................................................... 28IX.2 FINISH DESIGN ........................................................................................................................... 28IX.2.A Luff tape material ................................................................................................................... 28IX.2.B Foot tape diameter ................................................................................................................ 29IX.2.C Luff and foot TAPE diameter ................................................................................................. 29IX.2.D battens ................................................................................................................................... 29IX.2.E Clew tack and head assembly ............................................................................................... 29PRELIMINARY CAUTIONSThe PROFURL in-boom mainsail reefing system is not designed to beinstalled on wooden masts, or aluminium masts with track added withscrews, rivets, glue or any similar assembly. Fitting on a carbon mast is notrecommended as it requires specialized knowledge and skills. Pleasecontact us.Please check that there is no sign of corrosion on the mast which maycompromise the strength of the assembly.The person in charge with fitting will be fully responsible for installation andadaptation on board according to the specifications shown in this manual.3
Page 1: 18/03/11PROFURL IN-BOOM REEFING SYS
Page 5 and 6: MK 0R5122B2A4311I11K11D11A11J11L11C
Page 7 and 8: MK 0RIII. INSTALLATIONIII.1 DETERMI
Page 9 and 10: MK 0RIII.5 ASSEMBLING THE LUFF SECT
Page 11 and 12: MK 0RPosition temporarily the 2 hal
Page 13 and 14: MK 0RIII.5.K - Drill the lower part
Page 15 and 16: MK 0RIII.6.A.1 - To cut the boom se
Page 17 and 18: III.7 Fitting the boom onto the goo
Page 19 and 20: III.9 FITTING OF THE LUFF TRIANGLE
Page 21 and 22: MK 0RIV. FITTING THE MAINSAILPlease
Page 23 and 24: MK 0RV. ADJUSTMENT OF THE BOOMVANG
Page 25 and 26: MK 0RVII. WARRANTY1- The PROFURL in
Page 27 and 28: MK 0R27MK0R BOOMP1770240165902346P1
Page 29 and 30: MK 0RIX.2.BFoot tape diameterFinish
Page 31 and 32: MK 0RBATTENS ANGLE TO THE LUFFCONSI
Page 33 and 34: MK 0RTACKDrawing 15HEADCONSTRUCTION

PROFURL IN-BOOM REEFING SYSTEM

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