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Spars, Rigging, and Hardware for Sailboats

Rig-Rite, Inc.
Phone: (001) 401-739-1140 -- FAX: (001) 401-739-1149        Spartan Ordering/Questions

Spartan Spars CD-4 Boom Section

Spartan Spars CD-4 Boom
Measurements: (OD) 6.0" x 4.0" (152mm x 102mm)
Wall Thickness: .160"
Weight/ft.: 2.87 lbs.
Moments of inertia: Ixx = 8.3", Iyy = 4.45"
Circumference: 15 7/8"
Alloy: 6061-T6
Standard Lengths: 16'7"
Sail slides: 3/4" flat slides (A006M)

Common Boom usage: Cape Dory 36, Cape Dory 40; Intrepid 35; Pearson 10M, 424;
See Also: Spartan Spars CD-4 Mast
CD-4 Boom Section

Spartan CD-4 Boom Section

CD-4 Boom Section - Clear Anodized: SP-CD4CA-___:
Spartan CD-4 Section Boom Tube is stocked in a variety of lengths (listed above) fully anodized, it can also be cut to shorter lengths. To order, specify length.
Sections can also be milled for the sail entrance or other components if necessary, painted finishes and other lengths are available on special order, Please specify. If you require a complete Boom Assembly, you can select from components below and contact us with specifications.

CD-4 Standard Boom Hardware
Listed below are parts specific to the Spartan CD-4 Boom Section. There are many parts for specific configurations that are not listed here. If you require CD-4 Section Boom Components not listed here please contact us with details.

CD-4 Gooseneck Ass'y, Standard: SP-180:

Heavy-duty cast aluminum Gooseneck End for CD-4 Boom Section has a 1/2" Horizontal Pin and will accept a 15/16" (maximum) wide Toggle. Clear anodized Gooseneck End will fit a variety of Toggles, but is commonly used with the SP-175 Bronze Gooseneck Toggle, below. Horizontal Pin is 2" forward of Boom end; Pin, SP-RP8-68, and nylon bearing washers are included.


CD-4 Gooseneck Ass'y, Special - Pearson: SP-180PY:

Special Gooseneck End designed especially for some larger Pearson Yachts, is identical to SP-180, above, but with lug for attachment of 5/16" Tack shackle. Used with a variety of Gooseneck Toggles, up to 15/16" wide, that do not incorporate a Tack attachment. Heavy-duty aluminum casting has black epoxy coating and includes 1/2" horizontal pin and nylon washers. As used on Pearson 10M, 424 and others.


CD-4 Gooseneck Ass'y, Special - Schaefer: SP-180SCA:

Special Gooseneck Assembly for CD-4 Boom Section includes provisions for up to 3 internal lines. Center (lower) sheave allows outhaul line to be lead aft to a cleat on the underside of the boom, or straight down to the deck; Reefing lines exit toward the deck, going through (2) SS Cam Cleats - Cleats can be removed when lines are to be lead to the cockpit. Cast aluminum Assembly has 1/2" horizontal pin for attachment of a variety of Gooseneck Toggles up to 1" wide, Horizontal Pin is 4 1/4" forward of Boom end. Unit is (maximum) 7 1/2" long x 4" wide x 6 1/4" high. Pin, SP-RP8-68, and nylon bearing washers are included. Also used on a variety of boats with Schaefer Spars. Sch56-47


CD-4 Gooseneck Special - Schaefer Casting: SP-180SC:

Fully machined, Black anodized Casting only, as used in Special Gooseneck Assembly for CD-4 Boom Section, above.


Gooseneck Toggle/Tack Ass'y - Bronze: SP-175:

Gooseneck Toggle/Tack Ass'y - Chrome: SP-175C:

Cast Bronze Gooseneck Toggle/Tack Assembly features 2 Tack positions and includes 3/8" Tack fastpin (FP-6-48). Accommodates 1/2" vertical and horizontal pins (on 1 7/8" centers), and has 1/4" hole for the mounting of (2) reef hooks, SP-174-3. Designed for use with the Spartan CD-4.5 (SP-504), and CD-5 (SP-174) cast Aluminum Gooseneck Brackets. Toggle portion (in front) is 2 7/8" high (1 1/8" high where it goes between Mast Bracket), x 7/8" wide at Horizontal pin hole, unit is (maximum) 5 5/8" high x 1 1/4" wide.


Gooseneck Toggle Reef Hook: SP-174-3A:
This 3/8" diameter SS Reef Hook is designed to bolt to the SP-175 Gooseneck Toggle with the included 1/4" fastener (2" bolt w/ locknut). Measures 3 1/4" long x 1 5/8" wide.


Gooseneck Slide & Toggle/Tack/Reef Hook Ass'y for 15/16" Internal Flat Track: SP-097SA:
Aluminum Gooseneck Slide with Toggle/Tack/Reef Hook Assembly to fit CD-4 Gooseneck Assemblies, above. Slide fits integral Track in Kenyon, Rig-Rite, Pearson, MetalMast and most other Mast Sections with a 15/16" or 7/8" Internal Flat Track, but does not fit CD-4.5 or CD-5 Mast Sections. Gooseneck Slide is 5 7/8" high x 7/8" (.865") wide, uses a 1/2" vertical pin and features 1/2" hole for downhaul line or shackle. Toggle is 15/16" wide @ 1/2" Horizontal pin hole. MU


Gooseneck Toggle/Tack Ass'y w/ Reef Hooks - 2 5/16" High: RR 45-148MRA:
Combination Toggle/Tack/Reef Hook assembly features SS Tack/Reef Hook assembly (PP 54-22S) bolted to cast Aluminum Toggle, RR 45-148M, and includes 1/2" Tack fastpin, K-10718. Toggle takes 1/2" vertical and horizontal pins. Black epoxy coated Toggle is 2 5/16" high x 1 3/8" wide (15/16" wide @ Horizontal pin hole) x 3 7/8" (maximum) long, pin holes are on 2 1/2" centers. Toggle fits a variety of Mast Brackets designed for a 2 5/16" Toggle with a 1/2" vertical pin. As used on Sabre 42.



Long Aluminum Gooseneck Toggle - 2 5/16" High: RR 45-148:
Cast Aluminum Gooseneck Toggle is 2 5/16" high and accommodates 1/2" vertical and horizontal pins. Black epoxy coated Toggle is 2 5/16" high x 1 3/8" wide (15/16" wide @ Horizontal pin hole) x 3 7/8" (maximum) long, pin holes are on 2 1/2" centers. Toggle features 2nd 1/2" vertical hole (1 1/4" aft) for attachment of Tack/Reef Hook assembly. Toggle fits a variety of Mast Brackets and Gooseneck Slides designed for a 2 5/16" Toggle with a 1/2" vertical pin.  M version is milled to prevent swiveling of reef hook assembly.  sch


Internal Exit Block Ass'y w/ 2 Sheaves & Cam Cleats: SK-4281:

Heavy-Duty internal Exit block Assembly designed for use with CD-4 Boom Section. Assembly mounts in slot (4" long x 1 1/2" wide) on under side of boom, aft of gooseneck casting, and incorporates 2 aluminum sheaves with integral SS Cam Cleats below them. Unit attaches to Boom with (8) 3/16" (#10) screws or rivets. Ideal for use with internal outhaul or reef lines up to 1/2" (13mm) diameter.


Internal Exit Block Ass'y w/ 2 Sheaves: SK-4281NC:

Heavy-Duty internal Exit block Assembly is as SK-4281, above, but without Cam Cleats, for use with internal outhaul or reef lines led down to the deck and cleated aft.


Cam Cleat Pad: SP-185:

Cast aluminum Pad is contoured to fit most Mast Sections and provides a flat, raised surface for mounting a variety of Cam Cleats. Anodized Pad has 1/4" holes on 1 3/4" centers, but can be drilled to fit other Cam Cleats.


Reefing Winch Pad: SP-096:

Cast aluminum winch pad is 4 3/4" in diameter, and mounts on the boom centerline with (4) 1/4" FH machine screws. Holes for the winch mounting screws are then drilled in the winch pad and tapped in the boom.


Reef Block Pad, Plastic: Sch 55-61:

Reef Block Pad, Aluminum Anodized: SP-182:

Reef Block Pad, Aluminum White: SP-182W:

Black plastic or original Cast aluminum Pad provides flat surface with holes specifically designed for mounting a Schaefer 07-11, 704-11 or 705-11 Cheek Block. Sch 55-61A


Boom Bail - 3/8" x 4" wide: K-11325:

Heavy SS Boom Bail made from 3/8" rod is designed to be attached with (1) 3/8" SS bolt and nut. Formed at 4" wide, width can be varied to fit larger or smaller sections. Bail length, from bolt center, is 5".


Boom Bail Bolt Ass'y - 3/8" for 4" Boom: K-11325BA:

Boom Bail bolt assembly includes 3/8" SS bolt x 5", with locknut, and nylon washers to prevent bail from damaging boom surface as it pivots.


Outhaul Slide Ass'y for 3/4" Internal Track: K-43009:
Outhaul Slide Assembly features pivoting toggle with 2-position clew attachment using 5/16" clevis pin, and separate pin for attachment of outhaul pennant. Slide is (maximum) 3 3/4" long x 3/4" wide, and 3 1/4" high. For Boom sections with 3/4" Internal Track. Also, see other Outhaul Slide Assemblies for 3/4" Internal Track Booms.


CD-4 Internal Outhaul Ass'y: SP-190:

Heavy-duty cast aluminum Internal Outhaul End includes a 2" aluminum sheave for up to 3/16" wire outhaul pennant, and includes a 1/4" pin shackle for topping lift attachment. Aluminum sheave is easily removable for service of outhaul pennant. Unit extends 1 1/2" beyond boom end.


CD-4 Outhaul Ass'y: SP-190NS:

Cast aluminum Outhaul End includes shackle for attachment of topping lift, but is not cutout for outhaul sheave. Identical to SP-190, above, but with no provisions for internal sheave. Heavy aluminum casting has black epoxy coating. As used on Pearson 10M, 424 and others.

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