COUPLERS
mfac Kardan Style Motor Couplers
Heavy duty brass ends are locked down to the shaft with a grub screw using the allen wrench supplied. The heavy duty universal joint slides over the brass ends and is held in place by the veins on the brass and grooves in the plastic.
Use the two drop down menus to select the two end sizes for your coupler. Once you have selected both sizes click "Order" and that size coupler will be added to your shopping cart.

Overall size 1-7/8" (48mm) Long
MFAC
$18.95
End1 End2
super navy coupler Super Navy Coupler
Use this insert to make a double knuckle u-joint out of the MFA Coupler.
ROB1701
$6.95
mfa coupler body MFA Coupler Body
Use this extra coupler body in conjunction with the above Super Navy Coupler to create a double universal joint for extra flexibility in your motor/drive shaft setup.
1-5/16" Long
MFACB
$6.95
Power Heavy Duty Clutch
Adaptable to shaft diameters of 5/4 mm, 4/3.2 mm
ROB1446
$18.95
dumas coupler Dumas Shaft Coupling
Machined brass universal sockets with nylon dogbone coupling rod. Use the two "End" drop down menus to choose each end of the desired coupler size then click order to add to cart.
DUMC
$8.95
END1 END2
Universal Coupling 3.2mm (1/8") to 4mm
GR354
$24.95
Coupling for 5mm Diameter Shaft
To be used with Graupner Universal Coupling (Above)
GR354-1
$3.95
gr354.4 Universal Coupler 4mm to 4mm
GR354-4
$9.95
Coupling for 2.3mm to 3mm Shaft
GR355-2
$12.95
rob1386 Coupling Sleeve
Designed to connect shafts of 1.5 - 2.5mm diameter. Flexible, robust and smooth running.
Length: 2"
ROB1386
$4.95
SHAFT/STUFFING BOXES
6mm Shaft With Stern Tube
Shaft diameter: 6 mm
Stern tube diameter: 12 mm (.47")
Shaft lenght: 242 mm (9.53")
ROB1453
$29.95
6mm Prop Shaft and Stuffing Box
Shaft: 6mm x 18"
Stuffing Box: .41" Diameter x 15 3/4"
ROB1737
$23.95
stuff box 3/16" Shaft and Stuffing Box
This heavy duty shaft with stuffing box comes with a 14" threaded-smooth shaft, a jam nut, nylon washer, two bushings, an oil filler tube and instructions.
Thread: 10-32
HAR2004
$21.95
Wheel Collar - 3/16"
Stop your prop shaft from pulling out of the motor coupling when running in reverse.
Install collar on prop shaft next to the stuffing box at the coupler end.
Includes:
-Pack of four collars
-Allen wrench and lugs
DUB141
$2.89
4mm Stern Tube
Total Length: 12"
Waterproof
Includes jam nut.
Extremely smooth operation.
4-40
MAR180
$39.00
Wheel Collar - 4mm
Stop your prop shaft from pulling out of the motor coupling when running in reverse.
Install collar on prop shaft next to the stuffing box at the coupler end.
Includes:
-Pack of four collars
-Allen wrench and lugs
DUB140
$2.89
4mm Shaft and Stuffing Box
Tube Diameter: 6mm
Lenght: 300mm (11.81")
ROB1444
$16.95
Wheel Collar - 4mm
Stop your prop shaft from pulling out of the motor coupling when running in reverse.
Install collar on prop shaft next to the stuffing box at the coupler end.
Includes:
-Pack of four collars
-Allen wrench and lugs
DUB140
$2.89
rob1441 4mm shaft and stuffing box 4mm Shaft and Stuffing Box
Tube Diameter: 6mm
Lenght: 130mm
ROB1441
$10.95
Wheel Collar - 4mm
Stop your prop shaft from pulling out of the motor coupling when running in reverse.
Install collar on prop shaft next to the stuffing box at the coupler end.
Includes:
-Pack of four collars
-Allen wrench and lugs
DUB140
$2.89
stuff box 1/8" Harbor Models Shaft and Stuffing Box
1/8" (3.2mm) x 8" Long
HAR2021
$15.00
stuff box 2mm Harbor Models Shaft and Stuffing Box
2mm x 11 " Long
Thread: 2-56
HAR2024
$12.50
Variable Pitch Propeller
Go from forward to reverse without changing motor direction!
2" Diameter Prop
4mm Diameter Shaft
Length: 11-3/4"
5/16" Stuffing Box
Includes Instructions
MAR090
$79.00
Variable Pitch Propeller with 700 Motor
Comes with a 12V, 700 motor attached for even further ease of installation.
MAR120
$119.00
KORT NOZZLES
kort nozzle Pono Nozzle
Cast polymer kort nozzle.
Nozzle dia. 4°"
Prop. dia. 3°"
2 rudder shoes.
HAR2006
$24.95
rudder Nozzle Rudder
This cast aluminum rudder with 7" cast-in stainless steel shaft is suitable for use with either the Pono or San Pedro nozzles.

Height 3"
Width 1"
HAR2007
$14.95
rob1433 Kort Nozzle
Redating kort nozzle, designed for propellers up to 50 mm diameter.
ROB1433
$21.95
rob1487 Kort Nozzle Set
Fixed Kort nozzle with a rudder and special 60mm diameter propeller.
ROB1487
$25.95
rob1432 Kort Nozzle
Rotating Kort nozzle for propellers up to 95mm in diameter.
ROB1432
$37.45
BOW THRUSTERS
bow thruster Bow Thruster With Electric Motor
High power design for medium to large boats
1-3/8' Tube Diameter
Propeller diameter 1 1/8"
Tunnel length 6"
12 volt motor, aluminum tube
MARX101
$109.95
Raboesch Bow Thruster RAB108 Bow Thruster With Electric Motor
These very powerful bow thrusters are supplied fully mounted with a Power 400 7.2-Volt electrical motor. The propulsion is provided by a flat propeller (pedal) which pressurises the water through jet nozzles whereby the entire assembly functions as a pump. This design is very robust and very stable and requires the very little maintenance. The pump housing and the extension tubes are made of ABS (acrylonitrile butadiene styrene). The motor is sealed with a G-ring and an O-ring which prevents the entry of water whereby the bow thruster can be installed vertically as well as horizontally. The motor with the pump housing cover can be removed easily. The cover has an O-ring that ensures water-tight sealing of the entire assembly.
Details:
Power 400 electrical motor. RPM 17.000 – voltage without load: 0.5 Amps – Blocking voltage: 20 Amps.

Comes in five sizes
RAB108-01: 9/16" (14mm) I.D. x 6-1/16" Wide (154mm)
RAB108-02: 5/8" (16mm) I.D. x 6-1/16" Wide (154mm)
RAB108-03: 3/4" (19mm) I.D. x 6-1/16" Wide (154mm)
RAB108-04: 7/8" (22mm) I.D. x 6-1/16" Wide (154mm)
RAB108-05: 1" (25mm) I.D. x 6-1/16" Wide (154mm)
RAB108-01
$43.50
RAB108-02
$45.50
RAB108-03
$47.50
RAB108-04
$49.50
RAB108-05
$53.50
bow thruster Bow Thruster With Electric Motor
Plastic case with electric motor SPEED400 and two extension tubes.

Specifications:
7.2V
Tube Diameter: 0.55"
Tube Length: approx. 2.36"
Total tube length (with center section): 6.5"
Height: 2.5"
GR1785
$39.95
rob 1155 Bow Thruster With Electric Motor
Rugged bow thruster unit with new wheel and high-efficiency design. Supplied with Navy S 4.8-6V motor, suppressor filter set and connection elements.

Height 112mm (4 3/8")
Max Width 155mm (6)
Tube Diameter 28mm (1")
ROB1155
$69.95
ADDITIONAL PROPULSION ACCESSORIES
Single Rudder Arm
1/8"
1 1/8" x 1/2" x 3/8"
DUM3504
$5.25
Single Rudder Arm
3/16"
1 1/8" x 1/2" x 3/8"
DUM3508
$4.75
Double Rudder Arm
1/8"
1 7/16" x 15/16" x 3/8"
DUM3515
$5.75
3/16"
1 7/16" x 15/16" x 3/8"
DUM3516
$5.75
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 TIL120
3 Spool TIL121
4 Spool TIL128

Choose a rudder post size from the drop down menus, either 1/8" or 3/16" and click order to add to cart.
TIL120
$24.95

Rudder Post

TIL121
$28.95

Rudder Post

TIL128
$31.95
Rudder Post
Rudder and Motor Mixer Control Unit
Automatically control the relative speed of two motors on your boat to achieve extremely sharp turns. As the rudder stick on the radio transmitter is pushed to a greater degree, the motors will change speed to pull/push the boat. Extreme rudder movement will cause the inboard motor to reverse for a tight turn.Works in both forward and reverse.
This solid state, micro processor works with any radio system and speed controls.
Output connectors provided for the rudder servo and speed controls. Must have 2 speed controls to work.
Includes LED power on indicator lamp.
Case size: 1. x 1.26 .79"


AJK101
$69.00
Reference :: Builders Gallery :: Terms of Sale
Copyright Harbor Models 2011