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Graupner Speed 600 7.2V Electric Motor (1793)

Graupner Speed 600 7.2V Electric Motor (1793)

£12.00

Powerful standard electric motor with high torque. Particularly suitable for direct ...
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68mm Propshaft with Tube M2

68mm Propshaft with Tube M2

£12.00

Shaft: Length 68mm, Diameter 2mm, Right Hand Thread M2 Stern Tube: ...
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Blackjack 29 RTR

Blackjack 29  RTR

£284.99

The Pro Boat® Blackjack™ 29 Catamaran makes larger and more expensive ...
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Micro Magic "Carbon Edition"

Micro Magic

£137.99

The racing Micromagic has been developed to reflect progress in the ...
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Electronize FR15HX-AN 15amp Electronic Speed Controller

Electronize FR15HX-AN 15amp Electronic Speed Controller

£34.30

Electronize FR12VR 12amp Electronic Speed Controller Autoset Neutral
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Electronize FR15HVR-AN 15amp Electronic Speed Controller BEC

Electronize FR15HVR-AN 15amp Electronic Speed Controller BEC

£35.50

Electronize FR12VR 12amp Electronic Speed Controller BEC Autoset Neutral with BEC
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Electronize FR12X 12amp Electronic Speed Controller

Electronize FR12X 12amp Electronic Speed Controller

£32.40

Electronize FR12X 12amp Electronic Speed Controller Preset Neutral
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Electronize FF40HX-AN 40amp Forwards Only Electronic Speed Controller

Electronize FF40HX-AN 40amp Forwards Only Electronic Speed Controller

£45.60

Electronize FF40HX 40amp Electronic Speed Controller Forwards Only Auto Neutral No ...
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Best Sellers

Universal Joint

Universal Joint

£2.20

Modular type universal joint, requires inserts to complete.
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Plain Coupling Insert 3.2mm

Plain Coupling Insert 3.2mm

£2.00

3.2mm Plain Insert, Includes grub screw
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Aliphatic Rapid Glue 145ml

Aliphatic Rapid Glue 145ml

£3.50

Outperforms traditional white glues with it's super fast grab time and ...
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Plain Coupling Insert 4mm

Plain Coupling Insert 4mm

£2.00

4mm Plain Insert, Includes grub screw
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Admiralty Glues Thin Superglue 20g Standard

Admiralty Glues Thin 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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8001 Cast Metal Sailor 22mm

8001 Cast Metal Sailor 22mm

£1.26

Sailor, crewman. Cast metal, Height 22mm. For 1:72 to 1:86 scale ...
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Threaded Coupling Insert M4

Threaded Coupling Insert M4

£2.00

M4 Threaded Insert
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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
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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
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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