Kenyon 2740 MORC Mast Section

Hunter 22; Impulse 21; Kiwi Mini-Ton; M-20; Mark 19; Mystic Mini-Ton; O'Day 19, 22; Pearson Triton 21, Triton 22; Portager 22; Preston 19; Roberts 19; S-2 6.7, 6.9; Starwind 22; US 21, 22; Common Mast usage - Tapered: Sonar;

Kenyon 2740 Mast Section 2740 Mast Section - Clear Anodized: K-2740CA-___: 2740 Mast Section - Raw: K-2740R-___: Kenyon 2740 Section Mast Tube is stocked in a variety of lengths (listed above) fully anodized or raw (mill finish), it can also be cut to shorter lengths. To order, specify length. Sections can also be milled for the sailgate or other components, painted finishes and other lengths are available on special order, Please specify. If you require a complete Mast Assembly, you can select from components below and contact us with specifications.

2740 Standard Mast Hardware Listed below are parts specific to the Kenyon 2740 Mast Section. For more generic parts, see Kenyon Exit Blocks, Kenyon Exit Plates, Kenyon Shroud Tangs, and other categories listed under Kenyon Spar Parts. There are many parts for specific configurations that are not listed here. If you require 2740 Mast Components not listed here please contact us with details.

Mastheads Listed below are standard mastheads for the Kenyon 2740 MORC Section. A variety of Custom Mastheads are available as well, please inquire. Tapered masts normally use welded-in mastheads for maximum strength with minimum weight. 2740 Mastheads are normally supplied with *K-198-7A* aluminum sheaves for use with wire or rope. Plastic sheaves for use with rope, K-198-7P, are available to reduce weight. Mastheads work optimally with 3/8" or smaller halyards.
Masthead Ass'y w/ 5/16" Toggles for Masthead Rig: K-11074:
Double channel extruded aluminum Masthead Assembly for 2740 mast section incorporates (4) aluminum sheaves, K-198-7A, for internal or external wire or rope halyards. Includes slotted SS toggles with 5/16" pins, K-1659, for headstay and backstay attachment, and 1/4" topping lift pin. Masthead fits in 2 7/16" x 1 3/8" wide slot cut into fore & aft sides of the mast tube. Sheave axle/Topping lift Pin (1/4") is K-10563, Toggle support Pin (5/16") is K-RP5-44. Use with Masthead Cap *K-10569* (order separately). Shown with (and Pre-drilled for) Spinnaker Halyard Bail K-1422 (order separately). Channel is 9" long, and attaches to the mast with (2) 1/4" bolts.
			*Masthead Sheave - Aluminum: K-198-7A:* Anodized Aluminum Sheave for use with wire or rope. Sheave is 1 3/4" OD x 31/64" wide x 3/8" ID, and rides on Bronze Bushing K-9523, for use with standard 1/4" axle.
			Masthead Sheave - Delrin: K-11881: Light weight Plastic Sheave for use with rope. Sheave is 1 3/4" OD x 31/64" wide x 3/8" ID, and rides on Bronze Bushing K-9523, for use with standard 1/4" axle.
			Masthead Sheave Bushing: K-9523: Sintered Bronze Sheave Bushing measures 3/8" OD x 1/4" ID x 1/2" long, for use on standard 1/4" axle.
			Spinnaker Halyard Bail: K-1422: SS plate is welded to 1/4" bail. Designed for use with Kenyon 1 3/8" wide double channel Masthead Assembly. Attaches with (2) #10 x 1/2" screws and locknuts.
			Mast Head Cap: K-10569: Mast Head Cap for 2740 fastens to top of any Kenyon inset single or double channel mastheads (in untapered masts) to seal mast end and provide a flat mounting surface. Cap size is slightly larger than 2740 mast section. Aluminum with black epoxy finish.
Fractional Masthead w/ Single Sheave: K-2295-1: Single channel extruded aluminum Masthead Assembly for 2740 mast section incorporates (1) aluminum sheave, K-198-7A, for internal main halyard, and backstay crane with 5/16" pin. Includes 1/4" pin for topping lift attachment. Masthead fits in 2 7/16" x 3/4" wide slot cut into fore and aft sides of the mast tube. Use with Masthead Cap K-10569 (order separately). Channel is 8" long, and attaches to the mast with (2) 1/4" bolts.
Long Fractional Masthead w/ Single Sheave: K-10584: Extended channel Masthead Assembly for 2740 mast section is as K-2295-1, but channel is 9 1/2" long. K-10976
Fractional Masthead w/ Two Sheaves: K-2295: Single channel extruded aluminum Masthead Assembly for 2740 mast section incorporates (2) aluminum sheaves, K-198-7A, for use with internal or external main halyard, and backstay crane with 5/16" pin. Includes 1/4" pin for topping lift attachment. Masthead fits in 2 7/16" x 3/4" wide slot cut into fore and aft sides of the mast tube. Use with Masthead Cap K-10569 (order separately). Channel is 8" long, and attaches to the mast with (2) 1/4" bolts.
			Mast Head Cap: K-10569: Mast Head Cap for untapered 2740 mast fastens to top of any Kenyon inset single or double channel mastheads to seal mast end and provide a flat mounting surface. Cap size is slightly larger than 2740 mast section. Aluminum with black epoxy finish.
*Fractional Weld-in Masthead for Tapered Mast: K-10317P-2:* Weld-in Single channel Fractional Masthead for 2740 Tapered mast section incorporates provisions for (1) 1 3/4" diameter sheave, K-198-7A, for internal main halyard. Strong, low-windage design includes (2) 1/4" pins for sheave axle and Backstay attachment. Masthead is 9 7/8" long (maximum) x .775" wide and Backstay Crane extends 7" beyond the aft face of 2740 tapered mast. Masthead is designed to be welded into the mast Section and is unfinished. Does not include sheave, use with Masthead Cap, K-11228 (order separately). I-21 9 1/8
			Mast Head Cap for Tapered Mast: K-11228: Mast Head Cap for 2740 fastens to top of fractional masthead with standard Kenyon taper to seal mast end and provide a flat mounting surface. Cap Measures 3 1/8" x 2 5/8" wide. Aluminum with black epoxy finish. As used on Sonar.

*Stainless Steel Jib Box Ass'y for 1/4" Pin: K-84030:* Internal SS Jib Box Assembly for fractional rigs combines 2 sheaves and integral Forestay attachment nose in one compact, low-windage unit. Unique design allows both halyards to be used for jibs and/or spinnakers. Aluminum sheaves for wire or rope will handle halyards up to 5/16" diameter. Assembly fits in mast cutout 2 1/2" high x 1 1/8" wide, and fastens with (8) #10 (3/16") fasteners. Used successfully on boats in the 21' to 26' range, unit has 1/4" hole for Forestay attachment.
*Stainless Steel Jib Box Ass'y for 5/16" Pin: K-84030L:* As K-84030 (above), but with reinforced 5/16" hole for Forestay attachment. K-10885
Aluminum Jib Box Ass'y w/ 5/16" Pin: K-11591A: Cast aluminum internal Jib Box Assembly with 5/16" pin and 5/16" Forestay Toggle. Unit combines 2 sheaves in an over/under configuration, with an integral Forestay attachment pin in one compact, narrow and lightweight unit. Dedicated Spinnaker and jib halyards are both well shielded from the 5/16" Forestay pin. Features heavy-duty Nylatron Sheaves: (1) 2" Sheave for Spinnaker Halyard, K-11638; and (1) 1 1/2" Sheave for Jib Halyard, K-11595. Sheaves are 1/2" wide for snag free handling of halyards up to 3/8" diameter. Assembly fits in mast cutout 5 1/2" high x 7/8" wide, and fastens with (4) #10-24 machine screws (included). Internal mounting flange is slightly curved to fit a variety of masts. Assembly is designed to fit through the mounting slot and is then fastened from the outside. Forged Chrome Bronze Toggle, MER 5770-410, is included. Unit measures 8" long x 7/8" wide and projects 1 3/4" inside of mast. Suitable for use with a variety of mast sections on boats with forestays up to 3/16" diameter. A-4
Aluminum Jib Box Ass'y w/ 3 Sheaves: K-11590A: Identical to *K-11591A* (above), but jib halyard (lower) sheave is replaced with 2 narrow sheaves and a dividing plate. Nylatron jib halyard sheaves, K-11593, are 1 1/2" dia. x 7/32" wide, and suitable for use with wire up to 5/32" dia., and line up to 3/16". Jib halyard sheaves are mounted on special removable axle, making it easy to lead halyards. As used on Evelyn 26.

Bow Light Base Pad (round): K-9356: Black urethane mounting pad provides low-profile mount for *K-11019* (or Perko 5686) bow light. Molded to fit 2740 mast section, pad is 2 3/8" dia. and fastens to mast with (2) #8 screws.
Bow Light (round): K-11019: When mounted vertically on *K-9356* Base Pad the K-11019 functions as a 20 point Bow/Steaming/Masthead Light. When mounted horizontally on top of mast it functions as a 360 degree all-around anchor light. Round base is 2 3/8" dia. and fastens with (3) #8 screws. Requires 3/4" hole for socket. 12-volt light uses GE # 90 bulb (included).

Spreaders The Kenyon 2740 mast section is normally used with Kenyon SP-2.2 airfoil spreaders, which measure 1 7/8" (fore and aft) x 3/4" (vertically). For Spreader details, or to order replacement Spreaders, See Kenyon Spreader Sections.
Spreader Bases The Kenyon 2740 mast section uses a variety of Spreader Bases (Brackets) and Spreader Bars to suit different applications. Standard Spreader Bases and Spreader Bars are listed below.
Spreader Bracket Ass'y - 0 degree aft: K-10561-2: SS wrap-around Spreader Bracket Assembly for 2740 mast section. Curved bracket has 2 welded studs to fit Kenyon SP 2.2 Spreaders. This strong fitting reduces windage to a minimum. Plate is 2 1/2" high and attaches to the mast with (9) 3/16" (#10) fasteners. For in-line spreaders.
Spreader Bracket Ass'y - 10° aft: K-10561-3: As K-10561-2, but with studs angled for spreaders swept 10 degrees aft. As used on Hunter 22, Sonar and others.
Spreader Bracket Ass'y - 15° aft: K-10561-1: As K-10561-2, but with studs angled for spreaders swept 15 degrees aft.
Spreader Bracket Ass'y - 20° aft: K-10561: As K-10561-2, but with studs angled for spreaders swept 20 degrees aft. As used on Boston Whaler Harpoon 6.2 and others.

Spreader Bars For High Performance applications designers frequently specify Kenyon thru-bar spreader systems. These systems have been proven through many years of top-level racing, and are now the norm on most racing yachts. Standard spreader bars for the 2740 section are listed below. Other angles are available on a special order basis.
Spreader Bar for SP-2.2 Spreader - 0 degree aft: K-11777: Anodized aluminum Spreader Bar is used on the 2740 mast section with Kenyon SP2.2 Spreaders. Installed through a slot in the mast, the bar is held in place by the spreaders. Has 5-degree vertical angle. For rigs with in-line spreaders.
Spreader Bar for SP-2.2 Spreader - 6° aft: K-11777-6: As *K-11777* (above), but angled for spreaders swept 6 degrees aft.
Spreader Bar for SP-2.2 Spreader - 10° aft: K-11777-10: As *K-11777* (above), but angled for spreaders swept 10 degrees aft. As used on Sonar.
Spreader Bar for SP-2.2 Spreader - 15° aft: K-11777-15: As *K-11777* (above), but angled for spreaders swept 15 degrees aft.
Spreader Bar for SP-2.2 Spreader - 17.5° aft: K-11777-17: As *K-11777* (above), but angled for spreaders swept 17.5 degrees aft.
Spreader Bar for SP-2.2 Spreader - 20° aft: K-11777-20: As *K-11777* (above), but angled for spreaders swept 20 degrees aft.
Spreader Bar Plate Kit for 2740 Mast: K-11882-1K: Formed SS Reinforcing Plates have rectangular slot to fit all standard SP2.2 Spreader Bars, K-11777 series, above. SS plates reinforce Mast and prevent wear and elongation of slot in mast where Spreader Bar passes through. Plates are 3" long x 1 3/4" high with rectangular slot and fasten to mast with (4) 3/16" (#10) fasteners. Kit includes 2 plates (port & starboard), (8) 3/16" SS rivets, and installation instructions - Spreader Bar from K-11777 series, above, must be ordered separately.
Retrofit Spreader Bar Plate Kit for 2740 Mast: K-10561BK: Special Kit for converting to Spreader Bar from standard Spreader Base on 2740 Mast. SS Reinforcing Plate has same footprint and hole spacing as K-10561 series Spreader Bases, above, but with rectangular slot to fit all SP2.2 Spreader Bars, K-11777 series, above. Formed SS plate reinforces Mast and prevent wear and elongation of slot in mast where Spreader Bar passes through. Plate measures 2 1/2" high and attaches to the mast with (9) 3/16" (#10) fasteners. Kit includes SS plate (K-10561B), (9) 3/16" SS rivets, and installation instructions - Spreader Bar from K-11777 series, above, must be ordered separately.
*Spreader Bar & Reinforcing Plate Kit for Sonar: K-11882-1K10:*
"> Kit for converting to Spreader Bar from standard Spreader Base on Sonar Mast. Formed SS plates reinforce Mast and prevent wear and elongation of slot in mast where Spreader Bar passes through. Plates are 3" long x 1 3/4" high with rectangular slot and fasten to mast with (4) 3/16" (#10) fasteners. Kit includes 10 degree Spreader Bar (K-11777-10), 2 plates (K-11882-1), (8) 3/16" SS rivets, and installation instructions. See Instruction Sheet - K-11882-1K10.
Retrofit Spreader Bar & Plate Kit for Sonar Mast: K-10561B-K10: "> Special Kit for converting Sonar Mast from standard Spreader Base to Spreader Bar & Wrap-around Reinforcing Plate. SS Reinforcing Plate has same footprint and hole spacing as K-10561 series Spreader Bases, above, but with rectangular slot to fit all SP2.2 Spreader Bars, K-11777 series, above. Formed SS plate reinforces Mast and prevent wear and elongation of slot in mast where Spreader Bar passes through. Plate measures 2 1/2" high and attaches to the mast with (9) 3/16" (#10) fasteners. Kit includes 10 degree Spreader Bar (K-11777-10), SS plate (K-10561B), (9) 3/16" SS rivets, and installation instructions. See Instruction Sheet - K-10561B-K10.

Mast / Spinnaker Eye: K-10562: For attachment of whisker or spinnaker pole on the front of the mast. Used where vertical adjustment of inboard pole end is not required. Heavy duty ring is welded to SS plate curved to fit 2740 mast section. Ring is 5/16" x 1 3/8" ID. Plate is 2 1/2" high and fastens with (6) 3/16" (#10) fasteners. As used on Sonar.
Winch Pad for 2740: K-10638: Black Urethane Winch Pad is 3 5/8" dia., and molded to fit on centerline of 2740 section. Pad insulates winch from mast wall and properly seats it for mounting. Pad is attached to mast with 1 screw, holes for screws to mount winch are then drilled through pad and tapped in mast wall.
Spar Cleat - 5" long: D-10325: Cast Aluminum Spar Cleat is a low-profile design with a narrow base suitable for use with line up to 1/2" diameter. Black Epoxy coated Cleat is 5" long, and fastens to spar with (2) 7/32" (#12) FH screws on 1 1/2" centers. See also, other Kenyon Spar Cleats.

Sail Slide Stop: K-11198: Sail Slide Stop works to keep sail slides from coming out of the sail entrance when the mainsail is lowered. Aluminum Slide Stop is 7/16" diameter x 1" long with SS thumb screw, thumb screw features captive nylon washer to prevent damage to mast surface.
Roller Prefeeder: K-11087: Heavy-duty SS Roller Prefeeder automatically feeds boltrope mainsails into mast. Large diameter rollers eliminate friction and chafe. Supplied with threaded slug and screws to clamp it in luff groove, below sail entrance. Adjust higher or lower until feeding is perfect. Fits any mast section that uses boltrope.

Gooseneck Brackets & Boom Attachments Kenyon MORC Mast sections can have a Boom attached using one of the Gooseneck Brackets listed below, but can also be used with special Gooseneck Slides for Small Boltrope, See: Gooseneck Slides for Boltrope Groove.
Gooseneck Bracket for 1" Toggle: K-10567: SS welded Gooseneck Bracket fits standard Kenyon 1" SS Toggle, K-1993, with 1/4" vertical pin. Fastens to 2740 mast section with (6) 3/16" (#10) fasteners. Base is 2 1/2" vertical x approximately 2 1/2" wide. dl
		SS Gooseneck Toggle - 1": K-1993: SS Gooseneck Toggle attaches directly to any of the Kenyon gooseneck brackets or gooseneck slides designed for a 1" toggle, and to any boom end casting using the *K-80* SS yoke assembly. Toggle is 1" square x 1 1/8" long with 1/4" holes at 90 degrees to each other on 1/2" centers.
Gooseneck Bracket for 1 1/2" Toggle: K-10602: SS welded Gooseneck Bracket fits standard Kenyon 1 1/2" SS Toggle assembly with reef hooks and 3-position tack (K-10518), with 1/4" vertical pin. Fastens to 2740 mast section with (6) 3/16" (#10) fasteners. Base is 2 1/2" vertical x approximately 2 1/2" wide.
		Gooseneck Pin, 1/4" for 1 1/2" Toggle: CP4-61K: Clevis pin is 1/4" dia. x 1 7/8" long, for use with *K-10602* Gooseneck Bracket.
		*Gooseneck Toggle/Tack w/ Reef Hooks: K-10518A:* Used with the K-10602 gooseneck bracket, and Kenyon 2333 or "D" section boom, this combination Toggle/Tack/Reef Hook Assembly features 3 tack positions and includes 3/8" tack fastpin, K-10399. Takes 1/4" vertical pin and 3/8" horizontal pin. Two 1/4" reef hooks allow for ease of reefing from either side of the boom. Toggle portion is 1 1/2" high x 11/16" wide with 1" between pin centers. Unit (excluding Reef Hooks) is 4" high x 11/16" wide x 2 1/4" long.
		*Gooseneck Toggle/Tack Ass'y: K-10518N:* As K-10518A, above, but without reef hooks. This combination toggle and tack assembly features 3 tack positions and includes 3/8" tack fastpin K-10399. Takes 1/4" vertical pin and 3/8" horizontal pin.
		*Gooseneck Toggle/Tack Ass'y: K-10518E:* As K-10518N, above, but specially modified to increase the setback distance to 2" between pin centers. As used on the Freedom 25.
		Tack Fastpin for 1 1/2" Toggle: K-10399: SS Fastpin is 3/8" dia. x 7/8" long. Used in 1 1/2" Toggle/Tack/Reef Hook Assemblies K-10518A, and K-10518N.

Vang Bracket: K-10970: Formed base plate has welded vertical triangle (non-pivoting) with 1/2" diameter hole for attachment of vang tackle block. Fastens to 2740 mast section with (6) 3/16" (#10) fasteners. Base is 2 1/2" vertical x approximately 2 1/2" wide.
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.

Mast Step Casting: K-10565: Mast Step for Kenyon 2740 fastens to deck, keelson, or to K-1374 Mast Hinge Assembly for use as tabernacle. Unit is (maximum) 4 1/16" long x 2 11/16" wide x 1 1/16" high, and drilled for attachment to K-1374 Hinge. Cast in 356 Aluminum with black epoxy finish.
Mast Step Casting w/ Box Cut-out: K-10565M: Mast Step for Kenyon 2740 fastens to deck, keelson, or to K-1374 Mast Hinge Assembly for use as tabernacle. Unit is (maximum) 4 1/16" long x 2 11/16" wide x 1 1/16" high, with holes for (2) 5/16" screws. Cast in 356 Aluminum with black epoxy finish. As K-10565, but milled for use with K-10940 4-sheave exit block. Sides have 1 1/2" flush cutout, on centerline.
Mast Step, Machined for K-10940 Sheave Box: K-10941: As K-10565M, but fully machined for attachment of K-10940 4-sheave exit block, and attachment to K-1374 Mast Hinge Assembly. As used on K-10939 Hinged Mast Step Assembly with 4-Sheave Exit Block.
Hinged Mast Step Ass'y: K-10620: Hinged tabernacle assembly allows for easy mast-stepping. Consists of K-10565 Mast Step casting bolted to K-1374 Mast Hinge Assembly.
Hinged Mast Step Ass'y w/ 4-Sheave Exit Block: K-10939: As K-10620, but with a 4-sheave exit block assembly for use with up to 4 internal halyards. Halyards (2 ea. port & starboard) may be lead up to cleats on the mast, or out at 90 degree across the deck. Consists of K-10941 Mast Step casting with K-10940 4-sheave exit/turning block, bolted to K-1374 Mast Hinge Assembly.
	Four-sheave Exit Block Ass'y for 2740 Mast Step: K-10940:
	Four-sheave exit block assembly for use with up to 4 internal halyards, bolts to 2740 Mast Step, K-10941. Halyards (2 ea. port & starboard) may be lead up to cleats on the mast, or out at 90 degree across the deck. Unit is (maximum) 4 1/8" long, and fits in mast cutout 1 3/8" wide x 2 1/2" high, and includes (4) Aluminum sheaves, K-198-7A, for use with wire or rope.
*Halyard Organizer Plate: K-1374HP:* Halyard Organizer Plate is designed to fit under the K-1374 Mast Hinge Assembly, using the same deck bolts. New-style formed SS Plate has a total of fourteen (14) 1/2" holes on 4 sides for attaching halyard turning blocks, boom vang, and halyard shackles. Base is 7 1/2" long x 4" wide and mounts with (4) 5/16" bolts on 4 1/4" x 2 3/4" hole centers. Plate measures 8 1/2" x 5 3/4" overall and can also be drilled for use with any mast step up to 4" wide.
Mast Step Base Plate Adapter: K-10868KP: Mast Step Base Plate Adapter converts standard mast step for use with external adjustment screws, on keel-stepped rigs. Fastens with (2) 5/16" FH screws in standard holes of E, 2740, 3049, 3350, 3550, 3656, and other Kenyon mast steps. Allows for precise positioning without unstepping the mast. Anodized aluminum plate is 5/16" thick and measures 8 1/2" long x 5" wide. Fastens to keelson with (4) 3/8" bolts in Slots that allow for 1 1/2" adjustment. Slot centers are 3 5/8" athwartships, and 5 3/4" fore & aft.

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Spars, Rigging, and Hardware for Sailboats