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Spars, Rigging, and Hardware for SailboatsRig-Rite, Inc. |
Rig-Rite #4F Boom Section |
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Spars, Rigging, and Hardware for SailboatsRig-Rite, Inc. |
Rig-Rite #4F Boom Section |
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| Rig-Rite #4F (2923) Boom Section Measurements: (OD) 2.88" x 2.25" (73mm x 57mm) Wall Thickness: .065" Weight/ft.: .74 lbs. Moments of inertia: Ixx = .96", Iyy = .31" Circumference: 8" Alloy: 6063-T6 Sail slides: 1/2" round slugs (A018, A118) or 1/2" boltrope Standard Boom Lengths: N/A Common Boom usage: |
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| RR #4F Boom Section The Rig-Rite #4F Boom Section is long out of production, but all replacement components are still available. If you require a complete Boom Assembly, See the RR #4 Boom which is suitable for most applications. |
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| RR #4F Standard Boom Hardware Listed below are parts specific to the Rig-Rite #4F Boom Section. For more generic parts, see categories listed under Spar Parts. There are many parts for specific configurations that are not listed here. If you require Rig-Rite #4F Boom Components not listed here please contact us with details. |
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RR #4F Roller-Reefing Gooseneck Ass'y w/ 1/2" Slide: RR 4FB-1ARS: Spring-loaded roller-reefing mechanism works by pulling aft on the boom and turning it in 1/2 turn increments. SS yoke assembly is fixed in a rectangular recess until boom is pulled aft. SS Spring locks yoke into recess when boom is released. Works only with end-boom sheeting systems with swiveling mainsheet and topping lift attachments. Cast aluminum boom end fitting includes captive SS tack pin and SS roller-reefing yoke assembly, K-8700A, with 3/4" SS Toggle, K-9267, and SS gooseneck Slide, K-9138. Fits all mast sections using 1/2" or larger round slugs or boltrope. |
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RR #4F Roller-Reefing Gooseneck Ass'y w/ 3/4" Toggle: RR 4FB-1ART: As RR 4FB-1ARS (above), but without SS Gooseneck slide. Toggle attaches directly to gooseneck brackets or slides designed for a 3/4" toggle. |
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RR #4F Gooseneck Casting w/ Tack pin: RR 4FB-1CA: Cast aluminum boom end fitting as used in RR #4F Gooseneck Assemblies (above), includes captive SS tack pin. Casting has 3/8" hole centered in 1" x 7/8" recess for attachment of various SS yoke assemblies for 3/4" toggle. |
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SS Roller-Reefing Yoke Ass'y for 3/4" Toggle: K-8700A:
SS spring-loaded roller-reefing yoke assembly for use with boom end castings that have a 3/8" hole centered in a 1" x 3/4" rectangular recess. Attaches to 3/4" SS Toggle with a 1/4" SS bolt and locknut (included). Post is 3/8" diameter x 3 1/2" long. Includes SS Spring, SS washers, and cotter pin. |
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SS Gooseneck Toggle - 3/4": K-9267:
SS Gooseneck Toggle connects yoke on boom to gooseneck brackets or gooseneck slides designed for a 3/4" toggle. Toggle is 3/4" square x 7/8" long with 1/4" holes at 90 degrees to each other on 3/8" centers.
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SS Gooseneck Slide - 3/4" for Boltrope: K-9138A:
SS Gooseneck slide fits any gooseneck assembly using standard 3/4" toggle, using a 1/4" bolt and locknut (included). Slide has heavy welded SS ring for downhaul attachment. Fits all mast sections using 1/2" or larger round slugs or boltrope.
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RR #4F Gooseneck Ass'y w/ 1/2" Slide: RR 4FB-1AFS: Cast aluminum boom end fitting includes captive SS tack pin and SS yoke, 3/4" SS Toggle, and SS Gooseneck Slide. Fits all mast sections using 1/2" or larger round slugs or boltrope. |
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RR #4F Gooseneck Ass'y w/ 3/4" Toggle: RR 4FB-1AFT: As RR 4FB-1AFS (above), but without SS Gooseneck Slide. Toggle attaches directly to gooseneck brackets or slides designed for a 3/4" toggle.
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SS Yoke Ass'y for 3/4" Toggle: K-79A: SS Yoke attaches to gooseneck casting with a 1/4" bolt, and to 3/4" SS Toggle, with a 1/4" SS bolt and locknut (included).
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| RR #4F Outhaul Ends | ||
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RR #4F Outhaul Casting: RR 4FB-2C: Cast aluminum boom end fitting has tab with 2 holes for outhaul, and/or topping lift attachment.
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RR #4F Outhaul Ass'y w/ Tang: RR 4FB-2AT: Cast aluminum boom end fitting has tab with 2 holes for outhaul, and/or topping lift attachment. Includes swiveling tang for mainsheet or topping lift attachment. Swiveling attachments for mainsheet and topping lift are required for use with roller-reefing goosenecks.
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RR #4F Outhaul Ass'y w/ 2 Tangs: RR 4FB-2A2T: Cast aluminum boom end fitting has tab with 2 holes for outhaul, and/or topping lift attachment. Includes 2 swiveling tangs for mainsheet and/or topping lift attachment. Swiveling attachments for mainsheet and topping lift are required for use with roller-reefing goosenecks. |
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