Spars, Rigging, and Hardware for Sailboats

Rig-Rite, Inc.
Phone: (001) 401-739-1140 -- FAX: (001) 401-739-1149
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Kenyon Spars 3650 Mast Section


Kenyon Spars 3650 Mast
Measurements (outside): 5.00" x 3.60"
Wall Thickness: variable
Weight/ft.: 1.80 lbs.
Moments of inertia: Ixx = 3.60", Iyy = 2.40"
Circumference: 13 7/16"
Alloy: 6061-T6
Sail slides: 1/2" round slugs (A018, A118) or 1/2" boltrope
Common Mast usage: DM 22; Glastron 23K; Hunter 25*; NA Spirit 23; O'Day 23 Mk.2*; Reinell 26; San Juan 24, 26; Tar Bucket;

Kenyon 3650 Mast Section


Kenyon 3650 Mast Section
Kenyon 3650 Section is currently out of production. If you require a new mast tube, please contact us with details for recommendations on the most suitable replacements, for most boats it would be the 3550, 3350, or 3049 Mast Section.

3650 Standard Mast Hardware
Listed below are parts specific to the Kenyon 3650 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 3650 Mast Components not listed here please contact us with details.

Masthead Assembly for Masthead Rig - Nylatron Sheaves: K-1800:
Masthead Assembly for Masthead Rig - Aluminum Sheaves: K-1800A:

Double channel extruded aluminum Masthead Assembly for 3650 mast section incorporates (4) sheaves, K-198-7P, for internal or external rope halyards of all types up to 3/8" diameter. 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 and aft sides of the mast tube. Use with Masthead Cap K-9573-1 (order separately). Pre-drilled for attachment of Spinnaker Halyard Bail K-1422 (order separately). Channel is 9 7/8" long, and attaches to the mast with (2) 1/4" bolts. Specify K-1800A with aluminum sheaves, (K-198-7A), for use with wire halyards.

 

K-1800

 

 

Masthead Sheave - Plastic: K-198-7P:
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 - 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.

 

K-198-7A
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.

 

K-1422
Mast Head Cap: K-9573-1:
Mast Head Cap for 3650 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 3650 mast section. Aluminum with black epoxy finish.

 


Fractional Masthead Ass'y w/ Single Sheave: K-2295-1:
Single channel extruded aluminum Masthead Assembly for 3650 mast section incorporates (1) Nylatron sheave, K-198-7P, 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-9573-1 (order separately). Channel is 8" long, and attaches to the mast with (2) 1/4" bolts.

 

K-2295-1

 

 

Long Fractional Masthead Ass'y w/ Single Sheave: K-10584:
Extended channel Masthead Assembly for 3650 mast section is as K-2295-1, but channel is 9 1/2" long.  K-10976

 

Fractional Masthead Ass'y w/ Two Sheaves: K-2295:
Single channel extruded aluminum Masthead Assembly for 3650 mast section incorporates (2) Nylatron sheaves, K-198-7P, 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-9573-1 (order separately). Channel is 8" long, and attaches to the mast with (2) 1/4" bolts.

 

SS Forestay / Block Hound: K-40547:
Heavy-duty SS Forestay Hound wraps halfway around the mast and provides a 3/8" hole for attachment of Forestay, or Halyard Block. Nose projects 1 1/2" forward of mast and is 1/8" wide with a 3/8" ID SS ferrule suitable for attachment of stay or halyard block. Unit is formed from 1 1/2" wide strap and attaches to mast with (10) 3/16" (#10) fasteners and (1) 3/8" bolt. Shroud Tangs commonly hang off the same 3/8" bolt. Formed to fit the Kenyon 3049 and 3650 mast Sections, unit can be bent to fit Kenyon 3350, 3550, 3756, E-Section masts, and similar sections. D40302

 

 

 


Spreaders
The Kenyon 3650 mast section is normally used with 1 1/8" OD Round Spreaders, but other sizes have been used in the past. For Spreader details, or to order replacement Spreaders, see Kenyon Spreader Sections.
 
Spreader Base Ass'y for 1 1/8" Round Spreaders: K-968:
SS welded Spreader Bracket Assembly for 3650 mast section. Formed plate has welded socket to fit Kenyon 1 1/8" OD Round Spreaders. Teardrop shaped plate measures (maximum) 3 3/8" high x 2 1/2" wide, socket projects 2 1/4" (maximum) out from mast wall. Attaches to the mast with (7) 3/16" (#10) screws or rivets and (1) 3/8" bolt that also fastens the lower shroud tang. Spreader is held in socket using vertical 3/16" screw and nut or cotter pin. Used for rigs with in-line spreaders, base has 5-degree vertical lift. D40429 +3

 

 

 


Stainless Steel Winch Pad: K-1139:
Stainless Steel winch plate is contoured to fit on centerline of 3650 Mast Section. Pad insulates winch from spar wall and properly seats it for mounting. Pad is attached to mast with (1) 3/16" (#10) FH machine screw, clearance holes for screws to mount winch are then drilled through pad, winch mounting holes are drilled and tapped in spar wall. SS plate is 3 3/8" high x 3 3/8" wide x .072" thick. SM D83905

 

Spar Cleat - 5" long: Ken 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.

 

Mainsail Gate Ass'y: K-9619K:
Aluminum Gate Assembly covers standard 4" entrance for sail slides or boltrope. When closed, allows slides to pass by gate and remain in mast. Slots allow gate to be slid aside when thumbscrews are loosened, and still remain attached to mast. Formed black Aluminum plate is 4" high x 2 1/8" wide, with slots on 3" centers for (2) SS thumbscrews, K-45 (included). Installation requires drilling and tapping (2) 10-32 holes. Note: Masts with cutouts on both sides will require 2 Assemblies.

 

K-9619K
Stainless Steel Thumb Screw: K-45:
SS Thumbscrew for use with Kenyon Mainsail Gates. SS Thumbscrew has a 10-32 thread and is 1/2" long (under head).

 

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.

 


Boom Attachments
The Kenyon 3650 Mast Section is commonly attached to a Boom using a Gooseneck Slide, See: Gooseneck Slides for Boltrope Groove.

 


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).

 

RR-72-99
Mast Step Casting: K-9816:
Mast Step for 3650 fastens to deck, keelson, or to K-1374 Mast Hinge Assembly for use as tabernacle. Rectangular base measures 5 3/8" long x 4" wide. Base has holes for attachment to K-1374 Hinge Assembly, but can be drilled for attachment to deck with (4) 1/4" bolts on 4 7/16" (fore and aft), and 3" (athwartships) centers. Cast in 356 Aluminum with clear anodized finish. D84553

 

Hinged Mast Step Assembly: K-1784:
Hinged tabernacle assembly for 3650 section allows for easy mast-stepping. Consists of K-9816 Mast Step casting bolted to K-1374 Mast Hinge Assembly.  K-2199 w/oBP

 

Halyard Organizer Plate: K-1374HP:
Halyard Organizer Plate is designed to fit under the K-1374 Mast Hinge Assembly, using the same deck bolts. Formed SS Plate has a total of ten (10) 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 casting up to 4" wide.
K-1374HP

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