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Revenge 1577 Elizabethan Navy Royal Warship 1:64

Revenge 1577 Elizabethan Navy Royal Warship 1:64

368.95

The Elizabethan Navy Royal warship Revenge was built at Deptford and ...
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Riva Aquarama - Italian Runabout

Riva Aquarama - Italian Runabout

274.94

The Riva Aquarama appeared on the market in 1963 as a ...
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Hollow Rivets 2mm OD x 10mm (10)

Hollow Rivets 2mm OD x 10mm (10)

3.16

Cap Maquettes Hollow Rivets 2mm O/Dia x 10mm long Pack Qty ...
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1 Hole Fine Brass Rail Stanchion Ball Type 10mm (Pack of 10)

1 Hole Fine Brass Rail Stanchion Ball Type 10mm (Pack of 10)

3.78

1 Ball Brass Rail Stanchion 10mm (10) Sold in packs of ...
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2 Blade 35mm X Type Nylon Propeller M4

2 Blade 35mm X Type Nylon Propeller M4

1.10

35mm X Type two blade high speed prop M4 Designed for ...
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2 Blade 35mm X Type Nylon Propeller M5

2 Blade 35mm X Type Nylon Propeller M5

1.10

35mm X Type two blade high speed prop M5 Designed for ...
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2 Blade 40mm X Type Nylon Propeller M4

2 Blade 40mm X Type Nylon Propeller M4

1.10

40mm X Type two blade high speed prop M4 Designed for ...
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2 Blade 40mm X Type Nylon Propeller M5

2 Blade 40mm X Type Nylon Propeller M5

1.10

40mm X Type two blade high speed prop M5 Designed for ...
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1022 White Wood Filler

1022 White Wood Filler

4.70

White wood filler, very light, quick drying and sands easily, specially ...
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Aliphatic Rapid Glue 145ml

Aliphatic Rapid Glue 145ml

3.59

Outperforms traditional white glues with it's super fast grab time and ...
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Brass Rod 0.7mm 1 mtr

Brass Rod 0.7mm 1 mtr

0.56

Brass Rod 0.7mm Diameter x 1000mm
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Searchlight 10.5x15mm (2)

Searchlight 10.5x15mm (2)

5.24

Searchlight with glazed lens, powerful 6 V/100 mA bulb Diameter: 10.5 ...
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Lime Strip 2x5mm

Lime Strip 2x5mm

0.44

Lime Strip 2 x 5mm x approx 1000mm
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500-600 Size Motor Mount

500-600 Size Motor Mount

2.15

Heavy duty 500-600 size motor mount
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Nail Fixer / Pin Pusher - 8175

Nail Fixer / Pin Pusher - 8175

7.61

Mantua Nail Fixer. This tool is spring loaded. A pin/nail is ...
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34310 Rigging Thread Black 1.00mmx10mtr

34310 Rigging Thread Black 1.00mmx10mtr

2.52

Rigging Thread Black 1mmx10M
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Jet Drives

Cornwall Model Boats | Hardware & Accessories | Drive Units & Outboards |  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: 219.18 (Inc VAT) / US Dollars: US$205.31 (Tax Free)


Quantity:  


Customers who bought this item also bought:
1. 49mm Impeller for Graupner Jet Drive (Ref: G2347.1)
2. ENERG Pro Marine 90 SBEC ESC (90A)(w/cooled) (Ref: P4404984)
3. 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: 44.52 (Inc VAT) / US Dollars: US$41.70 (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: 39.03 (Inc VAT) / US Dollars: US$36.56 (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: 20.53 (Inc VAT) / US Dollars: US$19.23 (Tax Free)


Quantity:  


Customers who bought this item also bought:
1. Graupner Jet Propulsion Unit 5 (2347) (Ref: G2347)

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: 12.31 (Inc VAT) / US Dollars: US$11.53 (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: 21.85 (Inc VAT) / US Dollars: US$20.47 (Tax Free)


Quantity:  

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