MAIN SAILS - Radial-Cut 

Dear viewer, having been in the Sailing Industry for 27 years, I work with Doyle, North and UK Sail Lofts internationally, as well as a few local lofts scattered around the world.

Purchasing a specific sail for your boat is a personal transaction and you need to feel confident with the advice you you are receiving.  I always work closely with my client and the company who builds the sail.

The expertise and services I personally offer are the re-cutting, re-designing, measuring and installation of a new or existing sail or suit of sails.  If there are any furling, reefing or rigging faults, these I normally pick up when inspecting and measuring and will advise of any upgrades or changes necessary or available.

GRAND-PRIX / RACING SAILS

These I normally refer to Mark Plough who owned a UK Sail Loft and now has 4 Sail Lofts on the East Coast (USA) including a Doyle Sail Loft in New York. His Name, reputation and expertise in this field is unsurpassed. He is also a really nice man who runs an awesome business and always has time for interesting projects.

For hand leather finishing, or a molded full batten main that slides on a double track system for a 110 foot mast you are welcome to speak with me regarding your custom design requirements.

 
 Double Taffeta               Cross Drive              Tape Drive               Radial Cut              Down Wind            Std.Dacron

Double Taffeta               Cross Drive              Tape Drive               Radial Cut              Down Wind            Std.Dacron

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Radial - Cruising Mainsail

tri-radial Spectra full length batten cruising mainsail. Click to enlarge.

Tape-Drive Spectra Cruising Main Sail with 3 Reefs. Click to enlarge. 

Radial Sails

Radial sails were the only performance construction choice before Tape-Drive and other “string-sail” construction methods were invented.

Radial sails are still an option for cruising sailors who do not want a Tape-Drive or membrane sail.

The fully articulated panel layout of a tri-radial mainsail rotates the cloth's thread line to match the primary load paths between the three corners of the sail.

Radial cut sails are made with long narrow panels (called gores) designed to align the strong warp yarns of the laminate with the primary loadpaths as they spread across the sail.

Because all loads start from a corner and then run in arcs across the sail to the other two corners, the gores radiate from the corners of the sail. 

 

Dependability: 

Depending on the size of your boat and its sailing requirements,

Dillon selects the appropriate sailcloth from a wide variety of laminates made by sailcloth manufacturers for the Radial-Cut construction system.

These commercially made laminates include scrims made of aramid, Spectra or polyester yarns. Professionally made laminates do not delaminate. 

Durability: 

In Radial-Cut sails the skin laminate is uniform throughout the sail.

There is no differential stretch or shrinkage from panel to panel as commonly experienced in sails produced with traditional sailmaking techniques.

Also, there are no load-bearing seams to creep, distort, or worse yet, fail.

 


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Radial
Dacron

Description:
Tri-Radial panel layout

Boat size:
30-40 feet

Construction: 
Long narrow panels radiating from the three corners that follow load paths connecting the corners.

Material:
Warp-oriented woven polyester cloth

Shape Stability:
★★

Longevity:
★★★

Shape after 500 hours:
Circa 60%

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Radial             Polyester

Description:
Tri-Radial panel layout

Boat size: 
25-45 feet

Construction: 
Long narrow panels radiating from the three corners that follow load paths connecting the corners.

Material:
Warp-oriented polyester laminates

Shape Stability:
★★★

Longevity:
★★★

Shape after 500 hours:
Circa 60%

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Spectra or    HydraNet

Description:
Tri-Radial panel layout

Boat size: 
40-80 feet

Construction:
Long narrow panels radiating from the three corners that follow load paths connecting the corners.

Material:
Spectra: Warp-oriented Spectra laminates

HydraNet: Spectra and polyester woven material

Shape Stability:
★★★

Longevity:
★★★ - ★★★★

Shape after 500 hours:
Circa 60-80%


Extra Durability With Taffeta

While very strong,  Taffeta sails are made more durable with the addition of a finely woven polyester taffeta layer laminated to one or  both sides. The taffeta layers don't add strength to the sail, but they protect the film layer from abrasion, which is a great benefit for cruising sailors. Taffeta comes in white or grey. 

Available with:

  • Reefs

  • Loose Foot

  • Cunningham

  • Telltales

  • Draft Stripes

  • Sail Numbers

  • Leech-line Options

Battens:

  • Power-head

  • Full Battens

  • Furling Mains

Other Options:

 

  • Lazy Cradle

  • Lazy Jacks

  • Dutchman

  • Sail Cover


Foil Shaping / sail fabrication

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Once the size and boat weight has been calculated  the foils for a given wind condition is then formulated and integrated into the mold for the sail.

Down wind sails have a different shape to up wind etc. 

Batten designs  and  pocket forms to fit existing hardware is incorporated into the lamination and fabrication of the sail.

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Stitching sails and finishing 

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All sail are stitched at some point or in their entirety. Keeping ones machines well tuned is a function of the loft machine mechanic. As this is a dwindling business there are fewer and fewer machine mechanics. So much so that the manufacturers of the sewing machines do not have service departments or personnel to tune the machines. I have had to learn the machine I have owned and operated in order to keep staff working. this normally means 1-2 hours ever night checking the machines after staff have left.

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HeAD BOARDS

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The  headboard is one of the most important parts of your sail.

If the angle of attack for the halyard is not set correctly you main will loose its shape and function incorrectly. 

I like to inspect the mast head, stand off and shiv set up when measuring for the sail. Maximizing the efficiency of a sail is paramount to the functionality a sail offers. 


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These links take you back to the individual design information pages

 



SJC MARINE

 by

Dillon Francis Oberholzer

 

Having owned and worked in leading American Marine companies until 2015 Dillon Oberholzer sold his businesses and moved from the USA  to Guatemala to further his work in Marine Bacteria Remediation. 

This in turn led to the development of SJC where his skills have been put to the test in incorporating modern  state of the art  manufacturing processes integrated with local hand woven products, all protected with "BMS"  Bio -Static, Anti Microbial, water resistant finishes.

Our CAD and technical abilities allow our clients to order products online within fabrication tolerances of 1 mm per 10 meters of final product manufacture.

Precise - On Time - Economic Solutions

 

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