Tulsa Paradyne


The Tulsa Paradyne was initially conceived as a test mule in which a new parallel powertrain could be developed, tested and then installed in the Proxima HEV. These plans changed, however, as the ambitions of Hurricane Motor Works broadened.

Tulsa Paradyne

The Paradyne, since its initial conversion in 1996, has matured into a fully functioning hybrid electric vehicle. The heart of this HEV is its overrunning (or one-way) clutch. After numerous failures with a roller overrunning clutch, the Works pursued Dana Inc. for the use of their sprag overrunning clutches. This type of clutch now operates successfully in the vehicle. A fully automated control system enables the driver to operate the Paradyne as they would any other automobile. For 2002, the Paradyne's engine has been converted from gasoline to E85 ethanol.

The Paradyne was originally white No. 7, but was repainted blue to match TU's colors. It kept No. 7 until the 2001 Tour de Sol, when it became No. 17.

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Tulsa Paradyne Specifications

Engine and Motor
Engine 1 liter 3-cylinder SOHC, liquid-cooled
Motor Solectria ACTGX20 AC induction
Engine peak horsepower (gasoline) 45 hp 33.5 kW
Motor peak horsepower 25.9 hp 19.3 kW
Peak combined torque (gasoline) 92 ft-lb 125 Nm
Battery pack 12 x Concorde PVX 1248 VRLA 144 V

Transmission Three speed automatic
Maximum transmission speed 6000 rpm
Hybrid technology Parallel hybrid with overrunning clutch

Body and Chassis
Layout Front engine, front wheel drive
Body Steel uni-body
Brakes Regenerative, hydraulic disc and drum
Wheels 14x6 inch, neutral offset
Tires 175/65R14
Steering Rack and pinion
Front suspension Compressed struts, sway bar
Rear suspension Custom springs, sway bar

General data
Curb weight 2400 lbs 1090 kg
Wheel base 89.2 in 2.27 m
Length 147.4 in 3.74 m
Height 52.4 in 1.33 m