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Last Update 8/16/08
Spykster Reverse Trike Concept Vehicle
Extertec(tm) Developments prototype was designed to achieve a level of performance that previous steering systems wouldnt be capable of addressing satisfactorily or more importantly safely.
Construction & development of the prototype & its steering system were completed in September 2005.
The vehicle has proven itself to be extremely capable, traveling at speeds in excess of
230kph or (140mph) with no sensitivity issues and possessing the turning circle of a small car.
The G forces the vehicle can exert on the rider are to say the least extreme and open up new riding experiences for users of these type of vehicles while maintaining maximum stability and control.
The Extertec(tm) "Spykster" team are pleased to report the steering system, has at no time proven to be restrictive to the rider.
Demonstrating a neutral & natural feel in all areas of the prototypes impressive performance envelope.
Prototype specifications
Wheelbase,
..2.0mtrs (78.7)
Overall length,
2.8mtrs (110)
Overall width,
.1.67mtrs (65.7)
Overall height,
0.8mtrs (31.5)
Seat height,
....0.6mtrs (23.6)
Ground clearance,
0.1mtrs (4)
Dry weight,
.262kgs (576lbs)
Fuel capacity,
18ltrs (4.7USgal)
Engine,
1998 Yamaha R1 approx. 112kw(150hp)
Electrical system,
.1998 Yamaha R1
Brakes,
AP racing, twin piston calipers, 265mm rotors.
Suspension,
..Spax coil over dampers front, R1 rear
Wheels F/R,
6.0/21x13, 290/595x13
Power to weight ratio figures of the Extertec(tm) "Spykster" prototype, with a 75kg(165lb) rider & half a tank of
fuel: 3.13kgs per kW (5.15 lbs per HP)
These figures are rarely matched by todays elite sports cars. For
example:
The Porsche 911 Turbo S - 4.83kgs per kW.
The Lamborghini Murcielago - 3.87kgs per kW.
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