J/Boats 70 Owner's Manual

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Owner Name:..........................................

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Summary of Contents for J/Boats 70

Page 1 Yacht Name:……………………………………. Owner Name:……………………………………...
Page 3: Table Of Contents
CCFC L imited W arranty ......................... I ncluded a t t he e nd o f t his G uide © C opyright 2 013, J B oats, I nc. A ll R ights R eserved ...
Page 4: Introduction
J/BOATS, I NC. H EREBY D ISCLAIMS A NY A ND A LL W ARRANTIES, E XPRESS O R I MPLIED, I NCLUDING A NY ...
Page 5: Ce C Ertification
With s tandard e quipment, t he J /70 M eets C ategory C R equirements f or C E C ertification. J /70s ...
Page 7: Specifications
d imension t o a s h igh a s 1 0.25’. © C opyright 2 013, J B oats, I nc. A ll R ights R eserved ...
Page 9: Getting T O K Now Y Our J /70
Interior S tructure: J /70 i nterior s tructure i ncludes s everal t ransverse b ulkheads, a V -‐berth p latform, reinforced k eel t runk a nd l ongitudinal h ull s upport m embers. E ach o f t hese i s b uilt w ith e -‐glass, g elcoat ...
Page 10 J/70 k eel l ifting e ye s hould o nly b e u sed w ith t he s tandard a luminum J /70 k eel ...
Page 11: Rudder, T Iller & S Teering H Ardware
t he f orepeak b ulkhead) a nd a b owsprit s eal f loats b etween t he b earings t o p revent w ater m igration © C opyright 2 013, J B oats, I nc. A ll R ights R eserved ...
Page 12: Companionway H Ardware
The s tandard J /70 o utboard b racket i s a n a luminum f abrication m ounted t o t he t ransom o n ...
Page 13: Mast B Oom & S Tanding R Igging
The c arbon m ast i ncludes p rovisions f or t hree i nternal h alyards ( mainsail, j ib & s pinnaker) i ncluding ...
Page 14: Cockpit S Afety L Ines
Any s ign o f w ear, b oth f or D yneema o r w ire s hould b e a ddressed i mmediately b y r eplacing s uspect l ines. © C opyright 2 013, J B oats, I nc. A ll R ights R eserved ...
Page 15: Running R Igging
J/70 i ncludes a r efined p ackage o f r unning r igging d eveloped w ith M arlow R opes t o m atch ...
Page 16: Rigging Y Our J /70
Remove v ang l ug b olt a nd l ug a nd s tore i n s afe p lace. • © C opyright 2 013, J B oats, I nc. A ll R ights R eserved ...
Page 17 Begin i nstallation o f r unning r igging s ystems p er t he J /70 r igging d iagrams o n t he f ollowing ...
Page 18: Mainsheet & T Raveler
J/70 Traveler Layout J/70 Traveler Layout © C opyright 2 013, J B oats, I nc. A ll R ights R eserved ...
Page 19: Backstay S Ystem
Harken 29mm Cheek Block 350 (P&S) © C opyright 2 013, J B oats, I nc. A ll R ights R eserved ...
Page 20: Boom V Ang & C Unningham
Cunningham 2:1 purchase line 29mm tie-lite block J/70 Cunningham © C opyright 2 013, J B oats, I nc. A ll R ights R eserved ...
Page 21 Harken 40mm T2 Loop Block 2148 (for Jib halyard tail) © C opyright 2 013, J B oats, I nc. A ll R ights R eserved ...
Page 22: Headstay L Ayout
Harken Small Boat Underdeck Furler - HC10645 Bottom of Headstay - Detail © C opyright 2 013, J B oats, I nc. A ll R ights R eserved ...
Page 23 Outhaul lead block 4:1 Outhaul Line J/70 Boom Layout © C opyright 2 013, J B oats, I nc. A ll R ights R eserved ...
Page 25: Bow S Prit & F Urler C Ontrols
Ronstan SS Lined Fairlead (pole control line) © C opyright 2 013, J B oats, I nc. A ll R ights R eserved ...
Page 26: Bow D Rainage L Ocker & A Ccess
Drain Hole (starboard side) Sealed & Removable Access hatch © C opyright 2 013, J B oats, I nc. A ll R ights R eserved ...
Page 27: Custom K Eel C Rane
Hull # 101 and above are equipped with 3/16" 7 x 19 galvanized wire cable for the keel crane from Hall Rigging. © C opyright 2 013, J B oats, I nc. A ll R ights R eserved ...
Page 29: Launching & H Auling Y Our J /70
DO N OT A TTEMPT T O S AIL O R O PERATE T HE J /70 W ITH T HE K EEL I N L IFTED ...
Page 30 CRANE T O R AISE T HE J /70 K EEL W ITH T HE K EEL L IFTING E YE M AY C AUSE D AMAGE ...
Page 31: Tuning T He R
p lease c ontact y our l ocal s ail l oft o r v isit t he J /70 O ne D esign p age ...
Page 32 This i s a v ery h elpful r acing t echnique i n b ig w ind a nd w ave c onditions w hen y ou w ant b oth t he w eight on t he r ail A ND t he a bility t o c onstantly a djust t he j ib s heet. ...
Page 33: Appendix A : B Est P Ractices -- B Oat I Nspection
a nd u se g uide f or J /Boat o wners. W e u rge e ach o wner t o r ead c arefully ...
Page 34 o ver t ime. B ilges ( all a reas n ot j ust t he c enterline b ilge) s hould b e ...
Page 35 f or w ear, p articularly h igh l oad l ines l ike m ain a nd j ib h alyards a nd j ib ...
Page 36 t he f asteners a nd r ebedding w ith S ikaflex o r o ther s uitable m arine s ealant. J ib ...
Page 37 o n m aintaining, i nspecting, r epairing a nd/or o perating y our b oat. © C opyright 2 013, J B oats, I nc. A ll R ights R eserved ...
Page 38 f inish a nd l ength a t J /Boats d iscretion. F or t he m ost u p t o d ate r igging s pecifications p lease c ontact J /Boats, I nc. © C opyright 2 013, J B oats, I nc. A ll R ights R eserved ...
Page 39: Appendix C - J /70 T Echnical B Ulletins
The f ollowing p ages i nclude a ll r elevant t echnical b ulletins f or t he J /70 s ince l aunch i n ...
Page 40 There has recently been a failure of a J/70 keel crane line. J Boats, CCFC and John Fox (J/70 structural engineer) are reviewing the cause and any measures that may be required to minimize the likelihood of a future occurrence. The standard lifting crane and Dyneema line (5,194 lb breaking strength), have a significant safety margin to handle the 630lb J/70 keel, whose load is reduced 50% with the 2:1 arrangement of the block.
Page 41 3) The lifting line should run from the termination point on the peak of the crane (at the large through bolt), through the cut-out on the underside of the aluminum crane down to the Harken 308 wire block then back up through the larger slot on the underside of the keel crane to the Harken thru-deck block mounted on the crane and then directly into the...
Page 42 5) During hoisting operations, ensure the lifting line is not in contact with any part of the keel crane aluminum slots on the underside of the crane – as can happen if the crane is misaligned, or the 308 block is twisted off centerline.
Page 43 Please n ote t he f ollowing c hange t o t he J /70 s pecification e ffective w ith h ull # 181: ...
Page 44 At Key West, the Rig Pro trailer will be located at the Westin Hotel (adjacent to Truman Annex) starting Thursday, January 17th. The contact in Key West will be Brian Fisher, at (401) 855- 0721 or brian.fisher@southernspars.com. Rig Pro will also have a stock of spare J/70 standing rigging, bowsprits, and spare mast/boom parts on site.
Page 45 Transom-mounted Gudgeons J/70’s built before hull #50 were fitted with lock washers and 3/8” hex nuts on the transom gudgeon bolts. We’ve heard of a few boats on which these nuts have worked loose. We recommend periodically checking the gudgeons fasteners for tightness (easy access through the inspection port) especially after a long road trip or if the boat remains in the water for long periods of time.
Page 46 Mainsail Feeder The mainsail feeder can have the tendency to catch on seams along the mainsail boltrope. The feeder can be opened up using a pair of needle-nose vise grips to provide a more forgiving entry for the sail. Though it’s not shown in the photos below (for clarity), a piece of cloth or tape should be wrapped around the feeder bars when bending them so that they are not scraped by the vice grip jaws.
Page 47 Loops on Rudder Pins We’ve seen that the stainless ring dings at the top of each rudder pin can sometimes get caught and distorted when in use. We recommend replacing the upper cotter rings with small loops of line. The line loops are also easier to pull to remove the pins.

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J/Boats 70 Owner's Manual

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