Los Altos Academy of Engineering

Light Speed III

Light Speed III Image

Designed and Constructed: 2002
Competed in: Solar BikeRayce 2002, 2003

Check out the Light Speed series photo gallery by clicking here.



Specifications

Dimensions
Length: 137 inches
Width: 36 inches
Height: 33 inches
Weight: approx. 160 lbs w/o battery & driver
Wheelbase: 80 inches
Track (Front): 27.5 inches
Ground Clearance: 3 inches

Body / Chassis

Tube frame construction with reinforced fiberglass body

Suspension and Steering
Suspension: Coilover with unequal length A arm in front. Trail link in rear.
Steering: Rack and pinion

Brakes, Wheels, and Tires
Brakes: Wilwood disc brakes
Wheels: Aluminum NGM, 14 in.
Tires: Bridgestone 18.5 in., 120 PSI

Battery
12 Panasonic LC-RA1212P1 rechargeable lead-acid batteries in series
Voltage: 96 volts
Capacity: 12 Ah / 20 hours
Weight: approx. 64 lbs

Motor

Manufacturer: New Generation Motors SC-M150-08
Weight: 20 kg
Type: Axial flux DC brushless permanent magnet wheel motor
Bus Voltage Range: 84-108 volts
Maximum Speed: 1250 rpm
Power Output: 9.0 kW
Horsepower: 12 hp
Efficiency: approx. 92 %
Motor Controller: New Generation Motors EV-C200, approx. 92% efficiency, with regeneration

Solar Array
Cell Manufacturer: Siemens, Inc.
Cell Type: Monocrystalline
Cell Size: 10 cm x 10 cm, 100 cm2
Cell Efficiency: 14.5%
Array Size: 0.9 square meters
Array Power Output: approx. 60 watts
Power Tracker: Solectria Boost converter

System Control
Foot pedal brake, foot throttle / hand

Performance in Solar BikeRayce USA 2002
Placed: 1st
Distance Completed: 100 km
Total Time: 2 hours, 25 minutes
Top Speed: 50 mph
Average Speed: 25.22 mph
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