Rig-Rite #8 Mast Section

RR #8 Mast Section The Rig-Rite #8 Mast Section is currently out of production, having been replaced by the lighter and more aerodynamic Spartan CD-4 Mast Section. If you require a replacement mast, the CD-4 Mast Section is a suitable replacement for almost every application where the Rig-Rite #8 was formerly specified. Many components are interchangeable between the two Mast Sections, most others are easily modifiable to do so.

RR #8 Standard Mast Hardware Listed below are parts specific to the Rig-Rite #8 Mast 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 #8 Mast Components not listed here please contact us with details.

*Inset Masthead Ass'y for Masthead Rig: RR 8M-H2:* Bolt-in aluminum Masthead Assembly for RR #8 Mast Section incorporates (4) 2 1/2" OD aluminum sheaves, K-198-10A8, for internal or external halyards, and Masthead Strap with (2) 3/8" holes for Headstay and Backstay attachment, and Dual Offset Spinnaker Bails. Includes 1/4" Clevis Pin for topping lift attachment. Masthead fits in 3 3/4" deep x 1 5/8" wide slot cut into fore and aft sides of the mast tube. Masthead Assembly (excluding SS Masthead Strap) is 9" long x (maximum) 4 1/4" wide, and attaches to the mast with (1) 3/8" bolt.
	2 1/2" Aluminum Sheave - 31/64" wide, 1/2" ID: K-198-10A8:
	Anodized Aluminum Sheave is 2 1/2" OD x 31/64" wide x 1/2" ID. With rope groove for up to 7/16" line. As used in a variety of Rig-Rite Mastheads.
	*SS Sheave Bushing/Spacer: K-11413:* Stainless Steel Bushing/Spacer is 1/2" OD x 3/8" ID x 9/16" (.552") long.
	Masthead Sheave Axle - 3/8" tubular: RR 8M-H2SA: SS tubular Sheave Axle is 3/8" OD x .240" ID x 1 5/8" long. As used in *RR 8M-H2* Masthead.
	Masthead Strap for 3/8" Pins w/ Offset Spinnaker Bails: RR 8M-H2SS-6:
	SS Masthead Strap for RR 8M-H2 Masthead has (2) 3/8" holes for Headstay and Backstay attachment and Dual Offset Spinnaker Bails. Attaches to masthead with (6) 1/4-20 RH screws.
*Special Replacement Masthead Ass'y for Sabre 28: RR 8M-H2DP:* Bolt-in aluminum Masthead Assembly for RR #8 Mast Section incorporates (4) 2 1/2" OD aluminum sheaves, K-198-10A8, for internal or external rope halyards, and special forked Masthead Strap with (2) 3/8" Clevis Pins for Headstay and Backstay Eye attachment. Unit includes Dual Offset Spinnaker Bails and 1/4" Clevis Pin for topping lift attachment. Masthead fits in 3 3/4" deep x 1 5/8" wide slot cut into fore and aft sides of the mast tube. Masthead Assembly (excluding SS Masthead Strap) is 9" long x (maximum) 4 1/4" wide, and attaches to the mast with (1) 3/8" bolt. Designed as special replacement for early Sabre 28 Domed Masthead, this unit installs with a minimum of effort allowing internal halyards, dual Spinnaker Halyards, and an approximate 2 lbs. savings in Masthead weight, all without requiring any rigging modification. kver.sl+sh
	Masthead Strap w/ 3/8" Pins & Offset Spinnaker Bails: RR 8M-H2SS-6DP:
	SS Masthead Strap for RR 8M-H2 Masthead has (2) 3/8" holes for Headstay and Backstay attachment and Dual Offset Spinnaker Bails. Attaches to masthead with (6) 1/4-20 RH screws.
*SS Masthead Ass'y for Masthead Rig: RR 8M-H1S:* Heavy-duty Stainless Steel Masthead Assembly for RR #8 Mast Section incorporates (4) 2 1/2" OD aluminum sheaves, K-198-10A8, for internal or external rope halyards, central Spinnaker Bail, and (2) Toggles with 3/8" pins for Headstay and Backstay attachment. Includes 1/4" Clevis Pin for topping lift attachment. Masthead fits over top of the Mast Section, and is attached with (4) 1/4" RH machine screws. Masthead Assembly (including Spinnaker Bail) is 13 1/4" long, and stands 3" above the mast top. As used on O'Day 27 and others. 11.5Lwo
*Old-style Domed Masthead: RR 8M-HDA:* Old-style Domed Masthead Assembly for RR #8 Mast Section incorporates special forked Masthead Strap with (2) 3/8" Clevis Pins for Headstay and Backstay Eye attachment. Unit includes Spinnaker Bail, has 1/4" Pin hole for topping lift attachment and attaches to mast with (4) 1/4-20 RH screws. Domed Masthead Assembly has no sheaves, and is normally used with separate sheave box installed just below it. As used on Sabre 28 Mk1 and Mk2.
	Masthead Strap for #8 Domed Masthead: RR 8M-HD-SS:
	Forked SS Masthead Strap used in RR 8M-HDA Masthead has (2) 3/8" Pins for Headstay and Backstay Eye attachment and Single Spinnaker Bail.
*Masthead Sheave Box: RR 8M-HSB-S28:* SS Masthead Sheave Box Assembly for RR #8 Mast Section incorporates (2) 2 1/2" x 1/2" aluminum Sheaves, K-198-10A8, for internal Main and Jib Halyards. SS Masthead Sheave Box Assembly fits in 3 1/2" high x 3/4" wide slot in Mast and is held in place with a 3/8" bolt. Unit is 7 1/2" long x 3 3/8" high x 11/16" wide. Early versions were larger, please inquire with existing box measurements. As used on Sabre 28 Mk1 and Mk2.

Spreaders The Rig-Rite #8 Mast Section is used with a variety of Spreaders, and SS Spreader Bases or aluminum Spreader Bars, listed below. For Spreader details, or to order replacement Spreaders, See Rig-Rite Spreader Sections.
Spreader Base Ass'y for 1 5/16" OD Spreaders: RR 8M-SB1: Standard Stainless Steel Spreader Base Assembly for RR #8 Mast Section. Original Heavy-Duty Spreader Bracket Assembly has 1 9/16" ID heavy SS tube welded to flat plate with spacers underneath to fit mast curve. Designed for use with 1 5/16" OD Spreaders using a 1/8" rubber bushing to mitigate shock loads. Spreader is angled up 5 degrees (0 degrees aft), and is fastened in Spreader Base with a 1/8" cotter pin. Unit measures 4 1/4" high x 2 7/8" wide, pair (one on each side) is attached to the mast with (2) 1/4" and (1) 1/2" bolts, going straight through the Mast Section. Lower (1/2") bolt is also used for attachment of Shroud Tangs. As used on Bombay 29, O'Day 27, Sabre 28 and others.

*Spreader Bar for #8 Mast w/ 7/32" Aft Lowers: RR 8M-275B-7WA:*
Aluminum Spreader Bar Assembly for RR #8 Mast is used with Rig-Rite SP275T Spreaders for rigs with aft lower shrouds using 7/32" Wire Stemballs. Installed through a 1 3/4" x 5/8" slot in the mast, Spreaders fit over the Bar and are pinned straight through the Bar, holding the Bar and Spreaders in place. Bar features captive SS rods to eliminate chafe from halyards or mast wall. Unit is 12" long x 1 3/4" wide x 5/8" high, and has 5-degree vertical lift. Also suitable for use on other 4" wide Mast Sections. As used on later Sabre 28s. SP275B Spreader Bars are available in a variety of other configurations to accommodate other wire or rod stemballs, and to fit different Mast Sections, See Rig-Rite SP275T Spreader Section. 30

1" Sail Slide Stop: K-10424XL: SS Spring Pin Sail Slide Stop fits all mast sections with track for 1" internal flat slides. Superior design allows Slide Stop to remain captive in mast track. Gate cutout (1 3/4" high) is made just 1" above SS Gooseneck Bracket. Spring pin fits in 1/4" hole drilled at top of cutout, unit slides down beneath Gooseneck Bracket when Spring pin is pulled. This design allows sail slides to come as close as possible to the gooseneck while remaining in track, and eliminates problems associated with slides snagging while going past a normal sail gate. Unit is 3" long x 1" wide with a 1/4" spring pin. For use with *Rig-Rite #8* and other mast Sections using a 1" flat internal luff track. RR 73-99
Gooseneck Bracket: RR 8M-GB1: SS Gooseneck Bracket for RR #8 Mast Section has 1/2" vertical Pin hole, for use with standard Gooseneck Toggle up to 2 1/2" high. Base is 4" vertical x approximately 3 5/8" wide, and attaches to the mast with (6) 1/4" RH fasteners. Commonly used with SS Reef Hook/Tack Assembly, RR 54-B8-4A, and cast Toggle, RR 45-67C, below. Can also be used as Vang Bracket with addition of Vang Toggle.
	SS Reef Hook/Tack Ass'y w/ 1/2" Vertical Bolt: RR 54-B8-4A:
	Heavy-duty Stainless Steel Reef Hook/Tack Assembly incorporates 1/2" Vertical Gooseneck Bolt. Dual Reef Hooks are formed from 5/16" rod, Assembly is (maximum) 4 5/8" wide x 7" high, and includes 5/16" SS Tack Shackle. Bolt is 4 1/4" long for use with Gooseneck Brackets and slides with a 1/2" Vertical Pin hole and a maximum 3 1/2" bracket height. This item is also available on a custom basis with other bolt lengths, please specify. As used on a variety of Bristol's, Pearson's, and Sabre's.
	*SS Tack Shackle, 5/16" w/ Locking Pin: Wic 1204:* Stainless Steel Tack Shackle mounts on top of 1/2" Vertical Gooseneck Tack Bolt. Forged Shackle features a 5/16" self-locking Pin. Used on a variety of Kenyon, Rig-Rite, MetalMast and other 1/2" Tack Bolts.
	Aluminum Gooseneck Toggle - 2 5/16" High: RR 45-67C:
	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 x 2 1/2" (maximum) long, pin holes are on 1 1/4" centers. Toggle fits a variety of Mast Brackets and Gooseneck Slides designed for a 2 5/16" Toggle with a 1/2" vertical pin. As used with Rig-Rite #6**, and #7 Booms on a variety of Pearson, Bristol, Sabre Yachts and others.

SS Winch Pad for RR #8: RR 8M-WP: Formed SS Winch Pad fits fits either side of the RR #8 Mast Section, and others. Winch mounting surface is 4 1/2" high x 4 1/4" wide. SS Plate is 4 1/2" high x (maximum) 5 3/8" long and fastens to Mast with eight (8) 1/4" RH Machine screws. Unit can be drilled to mount any suitably sized winch.
Aluminum Winch Pad for RR #8: SP-096: Clear anodized, Cast aluminum winch pad is 4 3/4" in diameter, and mounts on the mast 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 mast.

Vang Bail - 3/8" x 4 1/8" wide: K-11325: Forged SS Mast/Boom Bail made from 3/8" rod is designed to be attached with (1) 3/8" SS bolt and nut. Formed at 4 1/8" wide, width can be varied to fit larger or smaller sections. Bail length, from bolt center, is 5 3/8". For use with RR #8 mast.
	Vang Bail Bolt Ass'y - 3/8" for RR #8: K-11325BA-5: Vang Bail bolt assembly includes 3/8" SS bolt x 5", with locknut, and nylon washers to prevent bail from damaging mast surface as it pivots. For use with K-11325 Bail on RR #8 mast.
Vang Bracket Ass'y w/ Toggle for 3/8" Pin: RR 8M-VBA-6: Vang Bracket Ass'y w/ Toggle for 1/2" Pin: RR 8M-VBA-8: Vang Bracket Ass'y w/ Toggle for 5/8" Pin: RR 8M-VBA-10: Vang Bracket Ass'y w/ Toggle for 14mm Pin: RR 8M-VBA-14M: SS Vang Bracket Assembly for RR #8 Mast Section has pivoting Toggle for use with rigid or soft boom vangs. Bracket (RR 8M-GB1) is 4" vertical x approximately 3 5/8" wide, and attaches to the mast with (6) 1/4" RH fasteners. Also available in other Pin sizes, please specify.
Vang Bracket for Rigid Vang – Special: A variety of semi-custom Brackets, or Bracket/Toggle combinations are available to fit rigid (or solid) vangs produced by a number of manufacturers. Please specify vang manufacturer, model and size.

Electrical Access Plate: RR 72-99: Electrical Access Plate is designed to allow access to internal electrical plugs above the mast step, without having to unstep the mast. Saves much in frustration and money by allowing you to check mast wiring connections with the mast up. SS Plate is 4 1/2" x 2" and is designed to cover a 3" x 1 1/4" vertical slot in the side of the mast, just above the top of the mast step. Plate is slightly curved to fit a variety of mast sections and attaches with (4) 1/4-20 RH machine screws (included).
Electrical Wire Slide: K-10908: Electrical Wire Slides - 10 Pack: K-10908P: Nylon slides fits all Kenyon and Rig-Rite (and many MetalMast) mast sections with internal electrical wire slide tracks. Slides are attached to wiring harness at 2-3 foot intervals with tie wraps. Prevents wires from slapping, and from fouling internal halyards. Molded Nylon slide is 3/4" long x 1/2" high x (maximum) 1/4" wide. Please note: Early versions of the RR #8 Section did not have internal wiring grooves (as pictured here), Electrical Wire Slides are not used with them.
Mast Step - Deck Mount: RR 8M-DS: Mast Step for RR #8 Mast Section fastens to deck or keelson with (4) 1/4" RH screws or bolts. Cast Aluminum Mast Step is (maximum) 6 1/4" long x 4 5/16" wide.
Mast Step, Keel-Mount: RR 8M-KS: Mast Step for RR #8 Mast Section fastens to keel or keelson with (4) 3/8" bolts in external adjustment slots to allow for precise positioning without unstepping the mast. Mast Step measures 9 7/8" (maximum) long x 5 1/4" wide. Allows for 1 3/4" fore and aft adjustment and features drainage channel to prevent water build-up inside the mast. Cast in 356 Aluminum with clear anodized finish. Sp-616Kunm
Special Mast Plug for Sabre 28: RR 8M-S28-SP: Special Mast Plug as used on early Sabre 28 fits Rig-Rite #8 Mast Section. Mast Plug fastens to bottom of Mast and has recess to sit on pinion protruding from special Sabre 28 Deck Plate, allowing complete (minor) articulation of the mast bottom. Anodized cast aluminum Mast Plug is (maximum) 6" long x 4" wide, and fastens to Mast with (2) 1/4" RH screws. Original Sabre 28 Deck Plate (RR 8M-S28DP) has attachment points for several Halyard Turning Blocks (but must not be used for attachment of Boom Vang) and is available on Special Order. Deck Plate is (maximum) 12 1/2" long x 5 1/2" wide, and fastens to Deck with (6) 1/4" RH screws.
Special Deck Plate for Sabre 28 Mast Plug: RR 8M-S28-DP:
Special Deck Plate as used on early Sabre 28. Anodized cast Deck Plate is (maximum) 12 3/4" long x 6 1/8" wide, and fastens to Deck with (6) #8 FH screws. Cast Aluminum Deck Plate has attachment points for four (4) Halyard Turning Blocks (1 forward & 3 aft) but must not be used for attachment of Boom Vang.
SS Tabernacle Ass'y: RR 8M-SST: Heavy-duty SS Tabernacle Assembly for Rig-Rite #8 and similar size Mast Sections. Mast pivots on a single 5/8" bolt, aft side of mast is cut on a simple radius (for Masts hinging aft). For constant usage (or thin walled Masts) we recommend welding in a 5/8" ID Aluminum compression Tube. Formed SS Channel with Triangular sides is 7 3/4" long x 4 1/2" wide x 3/16" thick, Channel is 4 1/8" ID, 5/8" bolt center is 3 1/4" from base. Unit attaches to Deck w/ (4) 1/4" FH bolts. Requires 5/8" hole in Mast and aft side cutaway, 5/8" Pin is centered at 3 1/2" from base. Suitable for Masts up to 4 1/8" (104mm) wide.

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Spars, Rigging, and Hardware for Sailboats