Spartan Spars CD-4.5 Mast
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Spartan Spars CD-4.5
Measurements: (OD) 6.625" x 4.376"
Wall Thickness: variable with .156" min.
Weight/ft.: 3.83 lbs.
Moments of inertia: Ixx = 17.15", Iyy = 7.60"
Circumference: 18 1/8"
Alloy: 6061-T6
Standard Mast Lengths: 39', 45'10 1/2", 49'7"
Sail slides: 15/16" flat slides (A008M)
Internal Electrical slides: SP-E127
Common Mast usage: Cape Dory 270*, 31, 32, 33*, 330;
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Spartan CD-4.5 Mast Section
CD-4.5 Mast Section - Clear Anodized: SP-CD4.5CA-___:
CD-4.5 Mast Section - Raw: SP-CD4.5R-___:
Spartan CD-4.5 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.
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CD-4.5 Standard Mast Hardware |
Listed below are parts specific to
the Spartan CD-4.5 Mast Section. All CD-4.5 Cast Aluminum Mast Components are standard
with a clear anodized finish for maximum corrosion resistance and greater longevity.
Other finishes available on special order.
There are many parts for specific configurations that are not listed here. If you
require CD-4.5 Section Mast Components not listed here please contact us with details.
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CD-4.5 Masthead: SP-500A:
Heavy-duty cast aluminum masthead assembly with 4 Aluminum sheaves is designed to allow
use of external OR internal halyards. Includes SS toggles for headstay and backstay with
1/2" pins and a topping lift attachment pin. Cast in 356 Aluminum with clear anodized
finish. Optional spinnaker bail (SP-158-2) is available. |
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3 1/2" Alu. Sheave w/ Integral Bushing: PP S14AR12-B8:
Anodized Aluminum Sheave with integral Oilite Bronze bushing. Sheave is 3 1/2" OD x
3/4" wide x 1/2" ID. With rope groove. Used in most CD-4.5 Mastheads.
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Masthead Spinnaker Bail: SP-158-2:
Heavy 3/8" SS bail is welded to a 3" x 2 1/2" flat plate which bolts to the
top of the masthead with (4) 1/4" RH machine screws and locknuts (included). Screw
hole spacing (to centers) is 2" fore and aft x 7/8" wide. Bail projects 1
3/4" forward of plate. Mounting requires drilling (4) 1/4" holes. |
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Upper Shroud Clevis Tang w/ 1/2" Pin: SP-206:
SS Upper Shroud Tang Assembly was designed for use with Shrouds up to 9/32" diameter
using standard Marine Eyes. Tang is 6 7/8" long x 1 1/4" wide x .120"
with (1) 1/2", and (1) 3/8" mounting hole and includes (1) 1/2" Clevis Pin.
Tang Assembly mounts with (1) 1/2" bolt and (1) 3/8" bolt on 1 7/16" centers;
Pin center is 4" from lower bolt. Especially suitable for use in Upper Shroud
applications as the 2 bolts allow no fore and aft movement, it is also
suited for other applications where the tang should not be allowed to pivot.
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Spreaders and Spreader Bases
The Spartan CD-4.5 mast section is normally used with Spartan
SP-512 (3 3/4") Airfoil Spreaders.
For other Spreaders, see
Spartan Spreader Sections.
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3 3/4" Airfoil Spreader Ass'y: SP-512TA-___:
Welded, tapered, clear anodized Airfoil Spreader Assembly has an inboard OD of 3 3/4"
x 1 3/16" and has a cast twist-lock tip with slot for 5/16" (max.) diameter upper
shroud. Standard Lengths are 3' 1/2" and 3' 11 1/2", but finished spreaders are
available in any length.
To order: Specify maximum length from inboard end to shroud bearing surface,
spreader base configuration, and finish. For Components, See:
Spartan SP-512 Spreader Section and Components.
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CD-4.5 Spreader Base - Port: SP-502P:
CD-4.5 Spreader Base - Starboard: SP-502S:
Original Cast aluminum Spreader Base for CD 4.5 Mast Section fits flush with the mast
surface and attaches to the mast with (6) 1/4" RH screws. Base is (maximum) 5 3/8"
long x 3" high.
Designed for rigs with in-line spreaders for use with 3 3/4" Airfoil Spreaders,
SP-512.
Cast in 356 Aluminum with clear anodized finish. |
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CD-4.5 Spreader Base w/ Tang Attachment - Port: SP-765P:
CD-4.5 Spreader Base w/ Tang Attachment - Starboard: SP-765S:
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New-style Cast aluminum Spreader Base for CD 4.5 Mast Section fits flush with the mast
surface and attaches with (4) 1/4" FH screws and a 1/2" bolt. Unique and sleek
design allows for use of the same 1/2" bolt as an attachment point for a lower shroud
tang Bearing Plate (SP-11216-S1) which fits under the Spreader Base.
Commonly used with Double Lower Shroud Tang Set (SP-753K),
below. Base is (maximum) 5 1/2" long x 3 1/4" high.
Designed for rigs with in-line spreaders for use with 3 3/4"
Airfoil Spreaders, SP-512.
Cast in 356 Aluminum with clear anodized finish. |
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Double Lower Shroud Clevis Tang Set w/ 1/2" Pins: SP-753K:
SS Double Lower Shroud Tang Set was designed for use with 4 Lower Shrouds up to
9/32" diameter using standard Marine Eyes. Set includes (2) Tangs
(SP-753P&S) w/ 1/2" Clevis Pins.
Double Tang is 6" long x 2 1/4" wide x .120" with (1) 3/4" mounting hole.
Pin centers are 3 1/8" (upper) and 4 1/4" (lower) from mounting hole and are 1 1/2"
(diagonally) apart. Mounting requires (1) 3/4" hole in each side of mast. Commonly
used with SP-753BPA Backing Plate Assembly with Flange Bushings, below.
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Backing Plate Set w/ Flange Bushings: SP-753BPA:
Recommended for standard applications, this Assembly allows for attachment of SP-753
Tang Set with (2) 1/2" bolts. Includes (2) Tapered Bearing Plates (K-11216-S1),
and (2) 3/4" OD Flange Bushings (K-10455S). Mounting requires (1) 1/2" and (1)
3/4" hole in each side of mast. Used with SP-765 and SP-766
Spreader Bases, and in a variety of other applications.
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Tapered SS Bearing Plate w/ 3/4" hole: K-11216-S1:
Tapered SS Bearing Plate has (1) 1/2" hole and (1) 3/4" hole for use with bolts of those
sizes, or with SS Flange Bushings (K-10455S) and (2) 1/2" bolts.
Tapered Plate is 3 1/2" long x 1" wide (at top) x 2" wide (at bottom) x 3/32" (.098") thick,
with (2) holes on 1 3/4" centers, and is contoured for use with most Mast Sections.
Also available as a Set (SP-753BPA) with (2) Bearing Plates and
(2) Flange Bushings.
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Flange Bushing – 3/4" OD x 1/2" ID: K-10455S:
SS Flange Bushing is 3/4" OD x 1/2" ID. Used with a 1/2" bolt it replaces a 3/4" bolt in
Shroud Tang applications to achieve significant weight reduction without any attendant
reduction in bearing surface. 3/4" OD Flange Bushing is 3/4" long, Flange Head is 7/8"
diameter x 1/8" thick. XXP
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CD-4.5 Hinged Sailgate: SP-507:
Original cast aluminum hinged assembly has sliding SS pin which, when lifted allows the
1 1/2" gate section to swing open. Designed to be mounted above the height of the
stacked mainsail slides, the sail is loaded by putting the lowest slide in first.
Cast in 356 Aluminum with clear anodized finish. |
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Sailgate Stop: K-10424L:
SS internal sliding gate stop assembly has spring plunger pin and slides in the mainsail
track. Slide is 7/8" wide x 3" long. As the slide is longer than the gate
cut-out it is held captive in the track and is locked in front of the gate cut-out by a
hole drilled in the track there. Pulling the SS plunger allows you to slide the stop
down and open the gate. Designed to be mounted just above the Gooseneck Bracket,
the sail is loaded by putting the top slide in first, and sliding the stop up to
cover the gate after the last (lowest) slide is in. RR 73-98
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Although it adds a few inches to the height of
the sail stack, this system offers numerous advantages over the original hinged sailgate
in that it is totally captive (can't be lost), unobtrusive, and never needs replacement.
Most importantly it simplifies sail raising and lowering, and especially reefing, as the
sail slides have no obstacles as they slide up and down the mast. Please NOTE:
Although it offers a nice choice on a new spar this is a difficult item to refit in
place of the original hinged unit, as it requires that the original cut-out be filled in
carefully. |
CD-4.5 Gooseneck Bracket: SP-504:
Cast Gooseneck Bracket is designed for use with the SP-175
cast bronze Toggle, using a 1/2" vertical pin. Bracket is (maximum) 3 1/4" high x 4 1/2"
wide and attaches to mast with (9) 1/4" FH screws. Cast in 356 Aluminum with a clear
anodized finish.
Please Note: A variety of other Gooseneck Brackets are available to fit the
CD-4.5 mast section and accommodate different Toggle configurations. Please specify.
x4.5/2bw1hw
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Vertical Pin Ass'y for Gooseneck Bracket: SP-174PA:
Clevis Pin for attachment of SP-504 Gooseneck Bracket to SP-175
Gooseneck Toggle is 1/2" x 4" long. Assembly includes (2) nylon bearing washers and
cotter pin.
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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. 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. Designed for use with the Spartan CD-4.5 (SP-504), and
CD-5 (SP-174) cast Aluminum Gooseneck Brackets, and suitable for
use with CD-3.5 and CD-4 Boom, Standard Gooseneck Assemblies. |
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Gooseneck Toggle Reef Hook: SP-174-3:
This 3/8" diameter reef hook is designed to bolt to the SP-175 Gooseneck
Toggle with the included 1/4" fasteners. Measures 3 1/4" long x 1 5/8" wide. |
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Winch Pad: SP-503:
Stainless Steel winch plate is 4 1/4" high, and mounts on the mast with (8) 1/4"
RH screws. The winch is bolted to the winch plate with screws and locknuts and then
attached to the mast. This system offers the advantage of being able to take the winch
off the mast before taking it apart, as well as greater flexibility in
mounting off of the centerline. |
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Winch Pad: SP-508:
Stainless Steel winch plate is 5" high, and mounts on the mast with (8) 1/4" RH
screws. The winch is bolted to the winch plate with screws and locknuts and then
attached to the mast. This system offers the advantage of being able to take the
winch off the mast before taking it apart, as well as greater flexibility
in mounting off of the centerline. Winch Pad is drilled for a Lewmar #8, but can
be redrilled for other similarly sized winches. |
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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. |
CD-4.5 Deck Collar Ass'y w/ Trim Ring: SP-505:
Cast aluminum, clear anodized 2-piece Deck Collar Assembly with lower (thru-deck)
flange. Unit has tabs for 3/8" cross pin designed to attach mast section to deck
collar and absorb deck tension loads. Deck Collar features large lip for mast boot
taping, and includes clear anodized interior trim ring, and 3/8" x 6 1/8" SS cross pin,
SP-505P. Bolts through deck with (6) 1/4" RH machine screws and locknuts.
Collar is (maximum) 10" long x 7 3/4" wide, ID size is (maximum) 7 3/8" long x
5 3/16" wide. Lower, thru-deck flange is (maximum) 8" long x 6" wide. |
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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). |
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CD-4.5 Mast Step, Deck-Mount: SP-770:
Mast Step for CD-4.5 Mast Section fastens to deck or keelson with (4) 3/8" bolts.
Features 1 1/2" hole in the center for electrical wires, and a drainage channel to
prevent water build-up inside the mast. Unit is (maximum) 7" long x 4 3/4" wide x 2 1/4"
high and projects 2" into Mast. Cast in 356 Aluminum with clear anodized finish.
As used on Cape Dory 32, and others.
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CD-4.5 Mast Step, Keel-Mount: SP-506:
Mast Step for Spartan CD-4.5 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. Features 1 1/2" hole in the center for electrical wires
and a drainage channel to prevent water build-up inside the mast. Mast Step is 8 1/8"
long x 6 3/4" wide, slots allow for 1" fore and aft adjustment. Slot centers are
5 1/2" athwartships, and 5 5/8" fore & aft. Cast in 356 Aluminum with clear
anodized finish. |
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Electrical Wire Slide: SP-E127:
Electrical Wire Slides - 10 Pack: SP-E127P:
Nylon slides fit internal electrical wire slide tracks in CD-3.5, 4.5, and CD-5 mast
sections. Slides are attached to wiring harness at 2-3 foot intervals with tie wraps.
Prevents wires from slapping, and from fouling internal halyards. Slide is 1" long.
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