Spars, Rigging, and Hardware for Sailboats

Rig-Rite, Inc.
Phone: (001) 401-739-1140 -- FAX: (001) 401-739-1149
www.RigRite.com

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Mast Sections

Replacement Spars

Boom Sections

Spars for New Boats

Spreader Sections

Round Tube

Replacement Parts Other Kenyon Products
One-Design Class Spars & Parts Ordering/Questions

Introduction

In its over 40-year production history, Kenyon has built spars for every type of sailboat from 7 to 70 feet LOA, and Kenyon has provided OEM spar and rigging packages to virtually every North American boat builder. Kenyon has built more spars than any other spar manufacturer in the U.S.
In addition to building new spars, Kenyon is committed to servicing its older products, and maintains a vast inventory of parts to do so. Descriptions and pictures of most parts are available on-site to help you identify most any replacement item. Kenyon Masts

Complete Spar Section specifications are listed below. Click on individual Spar Sections to see hardware specific to those Sections. For more generic parts, see Kenyon Exit Blocks, Kenyon Exit Plates, Kenyon Shroud Tangs, and other specific categories listed under Kenyon Replacement Parts.


Kenyon Mast Sections

Over the years Kenyon Mast Sections have evolved into five distinct categories:

Traditional Mast Sections - Oval and Teardrop Sections
MORC Mast Sections - High Performance Delta Sections for Smaller Boats
High Performance Mast Sections - Delta Sections for Larger Boats
Cruising Mast Sections - Feature Interchangeable Slide-in Luff Tracks & Integral Wire Conduit
Roller Furling Mast Sections

Complete specifications on all Mast Sections are listed below.
All Sections are extruded of 6061-T6 Aluminum Alloy, unless otherwise noted.
All Sections feature integral etch lines at maximum points to facilitate assembly and hardware attachment.
Click on individual Spar Sections, below, for additional specifications, and to see hardware commonly used with those Sections. For more generic parts, see specific categories listed under Kenyon Replacement Parts.


Traditional Mast Sections
These are the most common of Kenyon's traditional Oval and Teardrop shaped Mast Sections.  
Click on individual Spar Sections, below, for additional specifications, and to see hardware commonly used with those Sections. For more generic parts, see specific categories listed under Kenyon Replacement Parts.

Kenyon Traditional Mast Sections

Cross-Sections

Section Number

Outside
Dimensions
(inches)

Wall Thickness

Weight (lbs./ft) Moments of Inertia

Ixx
(in4)

Iyy
(in4)

mast sections

A    

2.38 x 1.88

.070

.60 .22 .20
B    

2.75 x 1.75

.095

.89 .55 .27
C-6  2.84 x 2.13 .085 .96 .73 .36
C-1  2.88 x 2.25 .065 .74 .96 .31
2331 3.13 x 2.30 .085-.115 1.00 .86 .59
H     3.50 x 2.06 .092 1.10 1.00 .42
D     3.75 x 2.25 .100 1.30 1.50 .63
2040 4.00 x 2.00 .075 .91 1.05 .39
E     4.50 x 2.75 .105 1.50 2.70 1.20
3049 4.90 x 3.00 .90 1.60 3.50 1.40
3550 5.00 x 3.50 .130 2.20 5.50 2.70
3650 5.00 x 3.60 variable 1.80 3.60 2.40
3756 6.00 x 3.75 .130 2.40 8.30 3.60
4960 6.04 x 4.89 .130 2.80 10.20 6.60
5072 7.40 x 5.08 .156 3.90 21.30 11.50

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MORC Sections
These High Performance Delta Sections were designed to meet the needs of the Midget Ocean Racing Class and are well suited for racing yachts up to 30', the 4060 is also used on a variety of yachts up to 34' LOA.  Click on individual Spar Sections, below, for additional specifications, and to see hardware commonly used with those Sections. For more generic parts, see specific categories listed under Kenyon Replacement Parts.

Kenyon MORC Mast Sections

Typical Cross-Section Section Number Outside
Dimensions (inches)

Wall Thickness

Weight (lbs./ft)   Moments of Inertia

Ixx
(in4)

Iyy
(in4)

2333 3.30 x 2.29 .075-.095 .92 .98 .51
2740 4.00 x 2.65 .090 1.25 2.00 .94
3350 5.00 x 3.30 .090 1.65 4.60 1.96
3656 5.60 x 3.60 .110 2.17 7.30 2.90
4060 6.00 x 4.00 .130 2.80 11.50 5.60

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High Performance Sections
Developed for use in multiple spreader rigs, the design characteristics of these High Performance Sections also make them ideal for use as Boom Sections. Click on individual Spar Sections, below, for additional specifications, and to see hardware commonly used with those Sections. For more generic parts, see specific categories listed under Kenyon Replacement Parts.

Kenyon High Performance Mast Sections

Typical Cross-Section Section Number Outside
Dimensions (inches)

Wall Thickness

Weight (lbs./ft)

   Moments of Inertia

Ixx
(in4)

Iyy
(in4)

4477-mast 4066 6.60 x 4.00 .130 - .250 3.10 14.30 5.60
4270 7.00 x 4.20 .140 - .300 3.70 19.21 7.30
4477 7.70 x 4.40 .150 - .300 4.20 25.60 9.30
4780 8.00 x 4.70 .157 - .380 4.60 32.40 11.40
4984 8.40 x 4.90 .165 - .420 5.00 39.20 13.70
5591 9.10 x 5.50 .180 - .420 5.90 54.30 19.60

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Cruising Sections
These Sections feature an interchangeable luff track system, which covers a channel designed to secure any electrical wiring. Select from a variety of Cruising Section Luff Tracks (listed below). This system provides easy access to all electrical wires, keeping them from banging around and isolating them from any internal halyard damage, as well as allowing easy conversion of existing masts to different mainsail slide systems. Click on individual Spar Sections, below, for additional specifications, and to see hardware commonly used with those Sections. For more generic parts, see specific categories listed under Kenyon Replacement Parts.

Kenyon Cruising Mast Sections

Typical Cross Section (without  luff track)

Section Number

Outside
Dimensions
(inches - w/o luff track)

Wall Thickness

Weight (lbs./ft)

    Moments of Inertia

Ixx
(in4)

Iyy
(in4)

4365 6.50 x 4.30 .156 3.70 14.60 7.08
4873 7.30 x 4.80 .140 3.64 18.70 8.88
5280 8.00 x 5.20 .188 5.20 31.70 15.10
6092 9.25 x 6.00 .188 6.03 50.10 23.70
68106 10.60 x 6.80 .200 7.00 88.30 36.10
78120 12.00 x 7.80 .225 8.40 131.50 61.20

Cruising Section Luff Tracks
A variety of slide-in tracks developed for use with Kenyon Cruising Sections. These tracks allow you to customize your new Cruising Section Mast (or easily convert an existing one) for use with a number of different mainsail slide systems. Tracks are extruded from 6061-T6 Aluminum and are available in any length up to the maximum specified.

Kenyon Cruising Section Luff Tracks

Kenyon 073-540

Kenyon K-73540
For use with 15/16" flat slides (A008M).
Standard length, 25 feet.

 

 

Kenyon 073-586

Kenyon K-73586
For use with 1/2" round slugs (A018, A118) or 1/2"  bolt rope.
Standard length, 30 feet.

 

Kenyon 073-572

Kenyon K-73572
Flat back cover for use below the gooseneck is cleaner and makes for a better seal at the deck partners on a keel-stepped rig.
Standard length, 25 feet.

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Roller Furling Sections
These Sections were designed for use with the Hyde Streamstay One (#9 & #10) solid rod furling system. Hyde, in conjunction with Kenyon, developed special drum and drum cover components optimized for use in these 'Hyde-away' Spar Sections. See Hyde Streamstay One for details on the functioning and components of the furling system. These sections are currently out of production, and are shown here for identification only. See Kenyon Replacement Parts for common replacement items on these Sections.

Kenyon Roller Furling Mast Sections

Typical Cross-Section Section Number Outside Dimensions (inches)

Wall Thickness

Weight (lbs./ft)

   Moments of Inertia

Ixx
(in4)

Iyy
(in4)

5381 8.125 x 5.30 .145 4.96 21.30 11.50
5790 9.00 x 5.75 .156 5.80 30.70 15.40
63106 10.60 x 6.30 .188 7.92 51.50 27.00
78120 12.00 x 7.80 .225 11.00 132.00 61.00

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Kenyon Boom Sections

These sections have aluminum castings for inboard and outboard ends, specifically designed to optimize their use as booms. Designed to be easily installed on the boom ends, many gooseneck and outhaul end fittings have sheaves and control cams for internal outhaul and reef lines. In addition to the standard Boom Sections listed below, Kenyon MORC and High Performance Sections have been used for booms on a number High Performance racing yachts. Although design characteristics of Kenyon MORC and High Performance Sections make them ideal for use as booms on such boats, end fittings for those sections require custom fabrication.

All sections are extruded of 6061-T6 Aluminum Alloy, unless otherwise noted.
All sections feature integral etch lines at maximum points to facilitate assembly and hardware attachment.
Click on individual Spar Sections, below, for additional specifications, and to see hardware commonly used with those Sections. For more generic parts, see specific categories listed under Kenyon Replacement Parts.

Kenyon Standard Boom Sections

Cross-Sections

Section Number

Outside
Dimensions (inches)

Wall Thickness

Weight (lbs./ft)

  Moments of Inertia

Ixx
(in4)

Iyy
(in4)

Kenyon boom sections 

 

RT1.25 1 1/4"  Round .065 .285    
RT1.50 1 1/2"  Round .065 .345    
2222 2.25 x 2.25 .068 .87 .51 .42
A      2.38 x 1.88 .070 .80 .22 .20
B       2.75 x 1.75 .095 .89 .55 .27
2331 3.13 x 2.30 .085-.115 1.00 .86 .59
2632 3.25 x 2.63 variable 1.11 .96 .69
2333 3.30 x 2.29 .075-.095 .92 .98 .51
D      3.75 x 2.25 .100 1.30 1.50 .63
E     4.50 x 2.75 .105 1.50 2.70 1.20
3550 5.00 x 3.50 .130 2.20 5.50 2.70
3756 6.00 x 3.75 .130 2.40 8.30 3.60
5072 7.40 x 5.08 .156 3.90 21.30 11.50
Semi-Custom Boom Sections
3350 5.00 x 3.30 .090 1.65 4.60 1.96
3656 5.60 x 3.60 .110 2.17 7.30 2.90
4060 6.00 x 4.00 .130 2.80 11.50 5.60

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Kenyon Spreader Sections

Airfoil Spreader Sections
All sections are extruded of 6061-T6 Aluminum Alloy, unless otherwise noted.
All sections feature integral etch lines at maximum points to facilitate assembly and hardware attachment.
Click on individual Spar Sections, below, for additional specifications, and to see hardware commonly used with those Sections. For more generic parts, see specific categories listed under Kenyon Replacement Parts.

Kenyon Airfoil Spreader Sections

Cross Sections Section Number

Outside
Dimensions (inches)

Wall Thickness

Weight (lbs./ft)

Moments of Inertia

Ixx
(in4)

Iyy
(in4)

SP1

1.13 x .38

.060 .179 .035 .003
SP2 1.88 x .75 .060 .370 .150 .020
SP2.2 1.88 x .75 .075 .410 .20 .03
SP3 2.75 x 1.00 .083 .650 .400 .056
SP4 3.75 x 1.31 .093 .980 1.140 .150
SP5 4.94 x 1.50 .090 1.100 3.630 .290
SP6 6.50 x 1.75 .125 2.030 6.400 .620

Round Spreader Sections
Used for various struts as well as spreader sections, all round tubing is of 6063-T5 alloy, and clear anodized unless otherwise noted.

Kenyon Round Spreader Sections

OD   Outside Diameter

Wall Thickness

ID   Inside Diameter

Weight (lb./ft.)

round_tube.TIF (16698 bytes)

    1/2"   .058 .384 .098
    5/8"   .058 .509 .125
    7/8"   .058 .759 .175
     1"    .065 .87 .225
  1 1/8"  .058 1.009 .229
  1 1/8"  .125 .875 .472
1  11/16" .109 1.5 .70

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Round Tube

Used in dingy spars as well as on various struts and spinnaker poles. All round tubing is of 6063-T5 alloy, and clear anodized unless otherwise noted. See also, Metric Round Tube.

Kenyon Round Tube
 

round_tube.TIF (16698 bytes)

round_tube.TIF (16698 bytes)

round_tube.TIF (16698 bytes) 

 

Outside Diameter Wall Thickness ID Inside Diameter Weight   (lb./ft.) Standard Lengths  Common Usage
1/2" .058" .384" .098 2', 3', 4', 6' Spreader
5/8" .058 .509 .125 2', 3', 4', 6' Spreader
3/4" .058 .630 .148 2'2", 3', 6' Spreader
7/8" .050 .77 .153   Spin. Pole
7/8" .058 .759 .175 2', 3', 4', 6', 20' Spreader
1" .050 .90 .17 20' Spin. Pole
1" .065 .87 .225 2'6", 3', 6', 20' Spreader
1  1/8" .058 1.009 .229 3', 4', 6', 21' Spin. Pole
1  1/8" .125 .875 .472 3', 4', 6', 22'6" Spreader
1  1/4" .065 1.12 .285 6', 20' Spin. Pole, Boom
1  1/4" .125 1.05 .519 3' 1", 4', 6', 18' Spreader
1  5/16" .133 1.12 .285 3' 1", 4', 6', 19' Spreader
1  1/2" .065 1.37 .345 6'3", 8', 10'10", 12', 20', 21'4", 27'4" Spin. Pole, Boom
1  1/2" .187 1.12 .911 3' 1", 4', 6', 24' Spreader
1  11/16" .109 1.50 .70   Spreader
1  3/4" .065 1.62 .39 6' Spin. Pole
1  7/8" .065 1.745 .43 20' Spin. Pole
2" .065 1.87 .47 6', 10', 20' Spin. Pole
2" .083 1.83 .6 12' S-1 Mast
2  1/4" .083 2.084 .665 6', 10' Spin. Pole, Sunfish Mast
2  1/2" .083 2.334 .74 11'3" black, 12', 20' Spin. Pole
2  7/8" .083 2.709 .856 13'3" Spin. Pole
3" .083 2.835 1.00 13'3", 15'6", 23'4" Spin. Pole
3  1/2" .120 3.260 1.50 15'6", 24'4" Spin. Pole
4" .120 3.750 1.72 13'6", 20', 24' Spin. Pole
4  1/2" .120 4.260 1.94 20', 24' Spin. Pole

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Replacement Spars

Although there have been a continual succession of design and product modifications, virtually all of the original Kenyon Spar Sections are still available. By using the original mast or boom Section you maintain the original integrity of your rig while eliminating any possibility of installation or interface difficulty.

If you are missing your Kenyon Spar or have a broken one you have several options. We can supply you with:

  • Complete Replacement Mast or Boom Assembly Identical to your original Kenyon Spar or modified in any manner you desire, we can supply you with a fully assembled mast or boom optimized to meet your needs and guaranteed to fit.

    For a quote on a replacement spar, please specify boat model and year, including LOA, spar finish (clear anodized, painted, or raw), and which Spar Section you are replacing (see Kenyon Spar Sections). Also be sure to confirm tube length, as there are variations.

  • Replacement Mast or Boom Section Kenyon Spars and hardware are sufficiently robust that in most broken mast scenarios, little hardware is damaged besides the mast tube (Section) itself. In most cases Kenyon's simple component construction makes it quick and easy to transfer hardware from a broken mast to a new tube. Finished Sections with factory-milled sailgate, welded masthead, exit boxes, and other cutouts as necessary, are supplied to minimize labor, and mean that drilling holes, and tapping some of them, are all the machining that is required to complete assembly. This is usually the least expensive and most expedient method of solving a broken spar problem.

    For a quote on a replacement mast or boom tube, Please specify boat model and year, spar finish (clear anodized, painted or raw), and which Spar Section you are replacing (see Kenyon Spar Sections). Except for the larger one-design classes; frequent changes in boat models, constant design improvements, and numerous other variations, make it impossible for us to know exactly which Spar Sections you have. Virtually all boats have used more than one Mast Section during the course of their production run, some as many as six (6)! Be sure to confirm Spar Section and tube length, as there are variations.

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Spars for New Boats

New Mast or Boom Assembly
If you would like a quote on a Kenyon Spar for a boat that was not originally equipped with one, please forward particulars on your boat model, including LOA, displacement, sail plan measurements, and/or previous spar specifications. We will be happy to make equipment recommendations and quote you accordingly.

New Mast or Boom Kit
Kit includes all hardware, fasteners, and finished, machined tube. Finished tubes with factory-milled sailgate, welded masthead, exit boxes, and other cutouts as necessary, are supplied to minimize labor, and mean that drilling holes, and tapping some of them, are all the machining that is required to complete assembly. This is usually the least expensive and most expedient way to get a new mast.

Have fun, save money, and really get to know your spar system. Please forward particulars on your boat model, including LOA, displacement, sail plan measurements, and/or previous spar specifications. We will be happy to make equipment recommendations and quote you accordingly.

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Kenyon Replacement Parts

Mast, Boom, and Spreader Parts
Although Kenyon's long history has shown a continual succession of design changes and product modifications, and seen many thousands of different parts, most all Kenyon Spar parts, or upgrades, are still available.

Most common replacement parts are listed underneath the Mast, Boom, or Spreader Section that they attach to. To find the part you need, first, determine which Mast, Boom, or Spreader Section the part attaches to by measuring the section (see Kenyon Mast Sections, Kenyon Boom Sections, or Kenyon Spreader Sections). Then, click on that Section. Descriptions, specifications, and, in many cases photos are displayed there. Except for the larger one-design classes; frequent changes in boat models, constant design improvements, and numerous other variations, make it impossible for us to know exactly which Spar Sections you have on your boat, and what parts you need.

Some parts are not specific to any particular Spar Section, and have their own pages listed below.

Kenyon Exit Blocks
Kenyon Exit Plates
Kenyon Masthead & Forestay Toggles
Boom Outhaul Slides & Cars
Kenyon Sheaves
Kenyon Sheave Axle Pins with Tab
Kenyon Shroud Tangs & Related Hardware

See Also, General Spar Parts by Category on the Spars Main Page.

Other Parts
If a part you require is not listed on-site, please forward a sketch and a complete description of the part, or its nearest equivalent on the website, and its measurements, including which Mast, Boom, or Spreader Section the part attaches to. See, Identifying Your Spar Section. Also be sure to specify boat model, including LOA, and year of manufacture. 

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Kenyon One-Design Class Spars & Parts

Although most production boats go through a variety of System and Hardware Vendors during their production run, a small number of One-Design Classes have adhered to strict regulations to provide a high level of uniformity in Hardware Systems, regardless of a boats’ age. For these boats it is possible to put together a list of replacement parts that require a minimum of measurements to accurately identify.
If a part you require is not listed, please contact us with full details.

Boston Whaler Harpoon 4.6 Spars & Common Parts
Boston Whaler Harpoon 5.2 Spars & Common Parts
Boston Whaler Harpoon 6.2 Spars & Common Parts
Capri 30 - Spars & Common Parts
Etchells 22 (E-22) - Spars & Common Parts
J/24 - Spars & Common Parts
J/29F - Spars & Common Parts
J/29M - Spars & Common Parts
J/30 - Spars & Common Parts
J/35 - Spars & Common Parts
Pearson Flyer (30') - Spars & Common Parts
Sonar - Spars & Common Parts
Soverel 33 - Spars & Common Parts
11 Meter - Spars & Common Parts

See also, Other One-Design Classes.

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Kenyon Ordering/Questions

We now have technical data and descriptions of all common Kenyon Spar Sections and Parts on-site.
If you need a replacement part for your Kenyon Spar, it is most likely listed here with a complete description and Part Number.

For Part Numbers, Data and Specifications, See: Kenyon Replacement Parts.

For Parts Pricing information, See Ordering/Pricing, you will need Part Numbers.

For Technical Assistance and Data about Kenyon Spars not listed on our website, See Kenyon Spar Technical. Please include all details, including boat model, length, and year of manufacture. Except for the larger one-design classes; frequent changes in boat models, constant design improvements, and numerous other variations, make it impossible for us to know exactly which Spar Sections you have. If your questions are about your existing Mast, Boom, or Spreaders, you must specify which Mast, Boom, or Spreader Sections you have. If a part you require is not listed on-site, please forward a sketch and a complete description of the part, or its nearest equivalent on the website, and its measurements, including which Mast, Boom, or Spreader Section the part attaches to. (see Kenyon Mast Sections, Kenyon Boom Sections, or Kenyon Spreader Sections).

For a quote on a complete Kenyon Spar, See Kenyon Spar Quote.

To place an Order, See Ordering/Pricing, you will need Part Numbers.

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