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Graupner Voith-Schneider Drive and Brushless Motor (2358.BL)

Graupner Voith-Schneider Drive and Brushless Motor (2358.BL)

208.99

True-scale propeller drive unit for powering and controlling model boats The ...
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OS MAX 21XZ-M

OS MAX 21XZ-M

299.99

The OS MAX 21 XZ-M motor is water-cooled. Particularly well suited ...
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Zap CA 1/4oz (Thin)

Zap CA 1/4oz (Thin)

2.99

Zap CA 1/4oz Super thin penetrating formula Works great on most ...
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Lightweight Ballraced 2 Axis Turning Block 10mm

Lightweight Ballraced 2 Axis Turning Block 10mm

10.16

Cap Maquettes Ballraced 2 Axes Turning Block 8 Ball 9mm ...
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Micro Magic "Carbon Edition"

Micro Magic

131.95

The racing Micromagic has been developed to reflect progress in the ...
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Lightweight Ballraced 180° Turning Block 10mm

Lightweight Ballraced 180 Turning Block 10mm

8.40

Cap Maquettes Ballraced 180 Turning Block 10mm 8 Ball 9mm Metal ...
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Lightweight Ballraced 180° Turning Block with Becket 10mm

Lightweight Ballraced 180 Turning Block with Becket 10mm

8.40

Cap Maquettes Ballraced 180 Turning Block with Becket 10mm 8 Ball ...
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Lightweight Ballraced 2 Axis Turning Block 10mm

Lightweight Ballraced 2 Axis Turning Block 10mm

10.16

Cap Maquettes Ballraced 2 Axes Turning Block 10mm 8 Ball 9mm ...
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Best Sellers

Universal Joint

Universal Joint

2.20

Modular type universal joint, requires inserts to complete.
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Threaded Coupling Insert M4

Threaded Coupling Insert M4

2.00

M4 Threaded Insert
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Amati Loom-a-Line

Amati Loom-a-Line

10.50

Amati's Loom-a-line is a handy rigging jig for naval models of ...
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Aliphatic Wood Glue Waterproof (1016)

Aliphatic Wood Glue Waterproof (1016)

4.25

Water resistant Aliphatic adhesive. 100ml. This is a very strong glue ...
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Admiralty Glues Thick Superglue 20g Standard

Admiralty Glues Thick Superglue 20g Standard

2.50

Caldercraft Admiralty Glues Standard Cyanoacrylate (superglue) is a high quality modelling ...
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Admiralty Glues Medium Superglue 20g Standard

Admiralty Glues Medium Superglue 20g Standard

2.50

Caldercraft Admiralty Glues Standard Cyanoacrylate (superglue) is a high quality modelling ...
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Plain Coupling Insert 2.3mm

Plain Coupling Insert 2.3mm

2.00

2.3mm Plain Insert, Includes grub screw
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Plain Coupling Insert 4mm

Plain Coupling Insert 4mm

2.00

4mm Plain Insert, Includes grub screw
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Jet Drives

Cornwall Model Boats | Hardware & Accessories | Drive Sets & Units |  Jet Drives

Water Jet Drives

The Jet propulsion unit, also known as a water-jet unit, is primarily fitted to exclusive high-speed motor yachts, ferries, racing boots and similar full-size vessels. In principle this power system consists of a pump which sucks in water though an opening in the bottom of the hull, accelerates it by means of an impeller, then forces it out again through an opening in the stern. Newton’s law of motion now applies: the jet of water expelled at the rear generates an equal and opposite reaction in the boat’s hull.

Boats with Jet propulsion units can operate in very shallow waters, as all the parts usually mounted below the hull, such as propeller, shaft, shaft bracket and rudder, are eliminated. Initial acceleration with a jet unit is very high, and this can be a distinct advantage in certain types of boat such as dragsters. The heeling moment produced by conventional boat propellers is completely absent. Since the water in a Jet propulsion system has to cover long distances in narrow ducts, there are inevitable friction losses which require rather more energy than for an orthodox power system.

Graupner Jet Propulsion Unit 5 (2347)

Graupner Jet Propulsion Unit 5 (2347)

The new JET propulsion unit is ideal for internal combustion engines, as thrust reversal is obtained by operating the reversing flap rather than by reversing the direction of rotation of the engine. The steering nozzle incorporates an integral cooling water nipple. Suitable power plants are internal combustion engines of 15 to 30 cc capacity, and electric motors rated at a minimum of 700 Watts output power.

Length approx. 285mm.Width approx. 78mm,
Height approx. 85mm, Impeller 49mm
Part No: G2347
More Information...

Price: 159.98 (Including VAT at 20%)
Euros: 214.38 (Inc VAT) / US Dollars: US$193.31 (Tax Free)


Quantity:  


Customers who bought this item also bought:
1. 49mm Impeller for Graupner Jet Drive (Ref: G2347.1)
2. 2221.1 Graupner Flexible 3 Pin Coupling Single 5-7mm (Ref: G2221.1)
3. ENERG Pro Marine 90 SBEC ESC (90A)(w/cooled) (Ref: P4404984)
4. Hitec HS5485MG Digital Servo (Ref: P2217580)

Related products:
1. 2221 Graupner Flexible 3 Pin Coupling Double M6-7mm (Ref: G2221)
2. 2221.1 Graupner Flexible 3 Pin Coupling Single 5-7mm (Ref: G2221.1)
Graupner Motor Mount for JET Propulsion Unit 6 Booster (2395.1)

Graupner Motor Mount for JET Propulsion Unit 6 Booster (2395.1)

Special motor mount for JET Propulsion Unit 6 Booster with connecting hole for Speed 700 series and Ultra 1300-9M motors.
Part No: G2395.1
More Information…

Price: 32.50 (Including VAT at 20%)
Euros: 43.54 (Inc VAT) / US Dollars: US$39.27 (Tax Free)


Quantity:  

Graupner Steering Nozzle With Reversing Bucket (2346.1)

Graupner Steering Nozzle With Reversing Bucket (2346.1)

The kit contains: steering nozzle, reversing flap and frame, mount, lugs and other parts (all parts injection-moulded plastic).
Part No: G2346.1
More Information...

Price: 28.49 (Including VAT at 20%)
Euros: 38.17 (Inc VAT) / US Dollars: US$34.42 (Tax Free)


Quantity:  


Customers who bought this item also bought:
1. 2347.5 Sealing Ring for Jet Unit 5 (Ref: G2347.5)

Replacement Impellers

Replacement impellers for the Graupner Jet Drive Units

49mm Impeller for Graupner Jet Drive

49mm Impeller for Graupner Jet Drive

49mm Impeller for the following Jet drive unit: 2347 & 2348
Part No: G2347.1

Price: 14.99 (Including VAT at 20%)
Euros: 20.08 (Inc VAT) / US Dollars: US$18.11 (Tax Free)


Quantity:  


Customers who bought this item also bought:
1. Graupner Jet Propulsion Unit 5 (2347) (Ref: G2347)
2. 2221.1 Graupner Flexible 3 Pin Coupling Single 5-7mm (Ref: G2221.1)

Replacement Parts for Graupner Jet Drives

Replacement parts for the Graupner Jet Drive Units

2347.5 Sealing Ring for Jet Unit 5

2347.5 Sealing Ring for Jet Unit 5

Rubber shaft sealing ring for Jet Propulsion unit 5 (2347)
Part No: G2347.5

Price: 8.99 (Including VAT at 20%)
Euros: 12.04 (Inc VAT) / US Dollars: US$10.86 (Tax Free)


Quantity:  


Customers who bought this item also bought:
1. Vitalbond 30 Min Epoxy 240g (Ref: VB39)
2. Graupner Steering Nozzle With Reversing Bucket (2346.1) (Ref: G2346.1)
2347.7 Nozzle Guide Vane for Jet Unit 5

2347.7 Nozzle Guide Vane for Jet Unit 5

Nozzle guide vane for Jet Propulsion unit 5 (2347)
Part No: G2347.7

Price: 15.95 (Including VAT at 20%)
Euros: 21.37 (Inc VAT) / US Dollars: US$19.27 (Tax Free)


Quantity:  

Cornwall Model Boats | Hardware & Accessories | Drive Sets & Units |  Jet Drives