Vortex 4+

Vortex 4+


The Vortex 4 + is a craft designed for serious use, it is designed to carry 5 adults but on a rescue mission in France it happily coped with 8 adults, a little cramped for seating room...... but the craft performed well and carried the rescued people to safety.  

The additional 0.85m length over the Vortex 2+ does give it increased stability in very rough conditions as well as increasing the payload capabilities. The designer has walked all round this craft, whilst floating in the middle of the Solent; buoyancy capability is excellent. On two occasions this craft has carried 'dead' hovercraft across its deck as well as having 3 people on board.  

The seating arrangement is very flexible, whilst the pilot sits in the centre, up quite high with excellent visibility, the passengers can sit in one of the two rows of moulded side by side seats or if the front row is removed, the centre tunnel can be used to sit one behind the other. The advantage of this arrangement is the increased baggage area.  

Control is provided by two rudders to control direction and a series of ailerons to control the trim of the craft depending on the load / passengers being carried. With a simple throttle lever to control the engine speed, the controls could not be easier.  

The use of the 2 cylinder BMW engine provides a power plant with an excellent power to weight ratio and being a BMW it has a very good reputation for reliability. The use of a fuel injected engine means it is fuel efficient with a very low level of maintenance. Cruising at 60kmh with 4 adults on board is achieved with the engine working at under 5000rpm, ticking over when compared to the engines maximum speed of 7500rpm. The extra power that is available helps the pilot cope easily with unexpected navigational problems.  

Owing to its length, a twin axle trailer with brakes is recommended, 1000kg suspension units are more than adequate, the additional load bearing capabilities of this trailer as compared with the Vortex 2+ trailer, is accounted for by the increased weight of the suspension units and longer trailer. 

 

Number of seats 4/5
   
Hull Details  
Length 4.6m
Width 2.15m
Height (off hover) 1.7m
Height (on hover) 1.95m
Weight (depends on final spec) Approx 400kg
   
Buoyancy  
Polystyrene and polyurethane 1.4cum (12750kg)
   
Fan  
Hascon BS (5Z type) 12 / 12 @ 42.5deg
                  or 9/12 @ 45 deg
   
Engine  
BMW R850 2 cylinder 4 stroke 70bhp @ 7500rpm
BMW R1100 2 cylinder 4 stroke 98bhp @ 7500rpm
Other engine options available  
   
Control Surfaces  
Rudders 2
Trim control surfaces 5
   
Skirt  
High pressure with contact strip 650gr/m^2
   
Nominal speed 80kmh
   
Standard equipment  
Safety Lanyard  
Navigation beacon  
Engine temperature gauge  
Engine tachometer  
Oil warning light  
Battery Meter  
Hour Meter  
Mooring ropes  
Fuel Tank 24lt