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| One-Design Class Spars & Parts | ||
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.
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 – 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 Iyy (in4) (in4) | |
 | 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 | |
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 Iyy (in4) (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 | |