Welcome to Harbor Models Inc.

Propulsion

Model boat propellers, propeller shafts, rudders, kort nozzles, couplers, bow thrusters, motors, rudder arms and more!

3 Blade Propellers
4 Blade Propellers
5 Blade Propellers
Special Propellers
Here you can find special propellers such as kort nozzle props and surface cutters.
Motors
Model boat electric motors. From tiny radar/winch motors to large motors capable of spinning 5 inch propellers and everything in between.
Propeller Shafts
Propeller shafts in varying lengths and diameters. Suitable for the very small to very large projects. 2mm, 1/8", 4mm and 3/16" shafts available.
Couplers
These heavy duty couplers will provide connection for a large range of sizes from 2mm to 1/4" shafts.
Bow Thrusters
Bow thrusters are a great way to add maneuverability to your vessel. This list gives the builder an option for any size ship.
2 Shoe Kort Nozzle
Cast polymer kort nozzle.
Nozzle dia. 4"
Propeller dia. 3-3/8" (85mm)
2 rudder shoes

Rudders to work with this nozzle found here: HAR2007
$24.95
Availability: Usually ships the next business day
HAR2006
3 Shoe Kort Nozzle, 3.5"
Made from cast polymer
Accepts up to a 3.3" (85mm) propeller
Sand to exact curvature of your ship

Rudders to work with this nozzle found here: HAR2007
$24.95
Availability: Usually ships the next business day
HAR2005
Split Rudder, 1/Pack
This is referred to as a "split rudder" because of the dual sections. The smaller, top section gets embedded into the hull for a secure fit. Since these rudders can handle large amounts of pressure this section will ensure the rudder shaft doesn't spin loose in the shaft hole in the hull.

Designed for an open wheel set-up.

Rudder Dimensions:
Height: 5"
Width: 2-15/16"

Rudder Shaft Dimensions:
Height (just portion out of the top of the rudder): 3-3/8"
Diameter: 3/16"
$18.95
Availability: Usually ships the next business day
TIL124
Nozzle Rudder
This cast polymer rudder with 7" cast-in stainless steel shaft is suitable for use with either the Pono or San Pedro nozzles.

Height" 3-5/8"
Width: 1-7/16"
Rudder Shaft Height (total): 7"
Rudder Shaft Diameter: 1/8"
$8.95
Availability: Usually ships the next business day
HAR2007
Shaft Support
Made from hard polymer
1 Set/Pack


Triangular piece is 5-3/4" long. Will fit up to a 3/8" diameter stuffing box.
Shape the triangular piece to the profile of your hull with some sanding and run the stuffing box through the two pieces. Glue/epoxy them together for a watertight, strong finish. From inside the hull put two small screws through the bottom into the shaft support and glue/epoxy around the holes.

Depending on the contour of your hull the finish product should look something like this:
$16.50
Availability: Usually ships the next business day
TIL107
Single Rudder Arm, 1/8"
Cast metal rudder arm with set screw drilled and tapped. Set screw is included.

Takes 1/8" rudder shaft
Over length: 1-3/16" (30mm)
Diameter (at the shaft insert): 1/2" (12mm)
Control rod hole diameter: 1/16" (1.5mm)
$5.45
Availability: Usually ships the next business day
DUM3504
Dubble Rudder Arm, 1/8"
Cast metal rudder arm with set screw drilled and tapped. Set screw is included.

Takes 1/8" rudder shaft
Over length (from shaft insert to control rod end): 1-3/16" (30mm)
Width (looking at it as a "V"): 1-7/16" (37mm)
Diameter (at the shaft insert): 1/2" (12mm)
Control rod hole diameter: 1/16" (1.5mm)
$5.95
Availability: Usually ships the next business day
DUM3515
Dubble Rudder Arm, 3/16"
Cast metal rudder arm with set screw drilled and tapped. Set screw is included.

Takes 3/16" rudder shaft
Over length (from shaft insert to control rod end): 1-3/16" (30mm)
Width (looking at it as a "V"): 1-7/16" (37mm)
Diameter (at the shaft insert): 1/2" (12mm)
Control rod hole diameter: 1/16" (1.5mm)
$5.95
Availability: Usually ships the next business day
DUM3516
Single Rudder Arm, 3/16"
Cast metal rudder arm with set screw drilled and tapped. Set screw is included.

Takes 3/16" rudder shaft
Over length: 1-3/16" (30mm)
Diameter (at the shaft insert): 1/2" (12mm)
Control rod hole diameter: 1/16" (1.5mm)
$5.45
Availability: Usually ships the next business day
DUM3508
2 Spool Steering Solution
The Steering Solution is an effective means to control steering through the application of a unique cable and pulley system attached to the rudder posts. A servo, not supplied with steering solution, powers the cable. For large props of 3" or larger, the use of a high torque is suggested for overcoming strong prop wash. The rudders can be smoothly turned 90 degrees without the steering mechanism locking up as can occur with piano wire and bell cranks. Snapping the rudders a full 90 degrees on a kort nozzle set will allow the boat to walk sideways for tight maneuvering.

2 Spool (for ships using two rudders)

Choose a rudder post size from the drop down menus, either 1/8" or 3/16" and click order to add to cart.
$24.95
Availability: Usually ships the next business day
TIL120
Rudder Post: 
3 Spool Steering Solution
The Steering Solution is an effective means to control steering through the application of a unique cable and pulley system attached to the rudder posts. A servo, not supplied with steering solution, powers the cable. For large props of 3" or larger, the use of a high torque is suggested for overcoming strong prop wash. The rudders can be smoothly turned 90 degrees without the steering mechanism locking up as can occur with piano wire and bell cranks. Snapping the rudders a full 90 degrees on a kort nozzle set will allow the boat to walk sideways for tight maneuvering.

3 Spool (for ships using three rudders)

Choose a rudder post size from the drop down menus, either 1/8" or 3/16" and click order to add to cart.
$28.95
Availability: Usually ships the next business day
TIL121
Rudder Post: 
4 Spool Steering Solution
The Steering Solution is an effective means to control steering through the application of a unique cable and pulley system attached to the rudder posts. A servo, not supplied with steering solution, powers the cable. For large props of 3" or larger, the use of a high torque is suggested for overcoming strong prop wash. The rudders can be smoothly turned 90 degrees without the steering mechanism locking up as can occur with piano wire and bell cranks. Snapping the rudders a full 90 degrees on a kort nozzle set will allow the boat to walk sideways for tight maneuvering.

4 Spool (for ships using four rudders)

Choose a rudder post size from the drop down menus, either 1/8" or 3/16" and click order to add to cart.
$31.95
Availability: Usually ships the next business day
TIL128
Rudder Post: 
Clevis w/ Pushrod, 4-40 thread
2/Pack
Rod dimesions:
12" Long
4-40 Thread
$6.95
Availability: Usually ships the next business day
GPMQ3784
Threaded Control Rod, 4-40
Thread: 4-40
12" long
1/Pack
$1.29
Availability: Usually ships the next business day
DUB802
Clevis, 4-40
Hard steel construction

Thread: 4-40
2/Pack
$3.89
Availability: Usually ships the next business day
GPMQ3794
Spring Steel Kwik-Link Clevis, 2-56
Spring Steel Kwik-Link Clevis, 2-56
2/Pack
Regular price: $2.99
Sale price: $1.29
Availability: Usually ships the next business day
DUB109
Swivel Ball Link 2-56
Swivel Ball Link 2-56
Regular price: $4.55
Sale price: $3.65
Availability: Usually ships the next business day
DUB367
Rigging Couplers 2-56
RIGGING COUPLERS 2-56
4/Pack
Regular price: $5.99
Sale price: $4.55
Availability: Usually ships the next business day
dub201