This encyclopaedic volume synthesises 25 years of research and development of this unique rig as adapted to western craft. It is a work which has been welcomed by the growing number of yachtsmen and designers throughout the world who already enjoy the benefits of junk rig or who wish to do so.
Now available as an ebook for the first time, Practical Junk Rig examines the design and aerodynamic theory behind junk rigs and discusses how best to sail them. It outlines the rig in detail, the principles that underlie it, considers possible alternative shapes and arrangements and analyses performance, all assisted by a wealth of detailed line illustrations.
Содержание
Foreword
Preface to the Hardback Edition
Preface to the Paperback Edition
Part I The chinese rig
Introduction
1 The Rig
The mast
Battens
The sail
Aerodynamics and the junk rig
2 The Geometry of the Sail
Sail analysis
Basic sail shapes
Recommended sail form
3 The Rigging of the Sail
Halyards
Yard hauling parrel
Mast line
Mast rake
Control of the boom
Sailcloth creasing
Batten downhauls
Yard downhaul
Topping-lifts
4 The Sheets
Sheet power and sheet spans
Six-point sheeting system
Positioning lower sheet blocks
5 Ghosters and Lightning Conductors
Ghosters
Lightning Conductors
Part II Designing a rig
Introduction
6 Designing the Sailplan (1)
Position of the sailplan
The sailplan
Drawing the sail
Summary: drawing a standard Chinese sail
7 Designing the Sailplan (2)
Positioning a single-sailed rig
Positioning a multi-sailed rig
Unacceptable mast positions
Unacceptable sheet positions
Suggested solutions
Positioning the lower sheet blocks
Summary: designing a sailplan (2)
8 Masts
Timber masts
Species of timber
Hollow timber masts
Gluing
Preservation of a timber mast
Cable fastening
Designing and drawing a hollow mast
Designing a hollow staved timber mast
Designing a grown mast
Mast fittings
Masts of other materials
9 Partners and Mast Step
The partners
The mast step Tabernacles
10 Yards, Battens, and Boom
The yard
The battens
The boom
11 The Sail
The scale outline
Detail drawing and specification
12 The Rigging
The halyard
The Sheets
Topping-lifts
Mast lift
Parrels
Tackline
Lacings
Optional rigging items
13 Cockpit and Deck Layout
Boom gallows
Lower sheet blocks
Rope leads
Cleats, hitches, and jammers
Stowage of spare rope
Integrated deck layouts
Part III Using the rig
14 Setting up the Rig
General points
Stepping and unstepping the mast
Dressing the mast
Rigging the sail
15 Handling the Rig
Sail-handling
Maintenance
Repairs and emergency procedures
Correction of excessive lee/weather helm
16 Specimen Chinese-Rigged Vessels
Jester (1960)
Redlapper (1962)
Galway Blazer II (1968)
R?n Glas (1970)
Yeong (1972)
Sumner (1972)
Design SSF/1 (1973)
Hum (1974)
Batwing (1974)
Pilmer (1975)
Appendices
A Imperial/metric equivalents
В Inches as decimals of a foot
С Update to Practical Junk Rig by the Junk Rig Association
Bibliography
Index