SOLAR BIKE TECHNICAL SPECIFICATIONS |
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Construction location | Bryan’s garage, Sacramento, California |
Solar Panels | 3 SunPower SPR-300 approx. 315 watts each or 945 total watts |
Panel Output | Approx. 60 volts @ 5.5 amps each |
Batteries | 3 12v Optima spiral lead-acid, 55 Ah Yellow-top, 42.5 lbs each |
Motor controller | Crystalyte 4840 48-volt 40 amp run modded to run at 36v |
Solar charge Controller | Outback MX60 charges up to 60 amps 12-60 volt input |
Remote controller video display | Dedicated 7” LCD screen and remote TV camera |
Power/trip Display | DrainBrain (Now cycleAnalyst) |
AC battery chargers | (3) Iota Engineering DLS-55 w/IQ4 55 amp @ 12v |
Recumbent Tandem Trike | Greenspeed (Australia) GTT 2002 |
Gearing | 14 speeds, two front chainrings |
Captain/Stoker Intercom | Tandem-com wired duplex headsets |
Rear Hub Motor | Crystalyte 5303 brushless DC in 20" steel rim (Phoenix ‘Racer’ driven at 36 volts) |
Front through-chain drive motor | EcoSpeed 750-watt brushless DC w/planetary gear |
Throttle | Hall effect, switchable to control chain-drive motor or hub motor |
Tires | Tioga Comp-Pul, 20" x 1.75 inch @90 PSI |
Drive tire | Schwalbe Marathon Plus 20" x 1.75" @ 80 PSI |
Headlight | Six Luxeon 3w LED run at 24v |
Amber Xenon Strobe | Caterpillar 24v |
PERFORMANCE |
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Design touring cruise speed | 20 mph |
Top speed | 22 mph |
Pedal-up speed to start | 7 mph |
Approximate muscle-powered wattage contribution | 300 watts/hr (boosts speed from 17 to 19.5 mph at same motor power) |
Solar/human energy ratio | Approx 3:1 solar/human |
Watt-hours/mile @18 mph | 30 w-h/mile (no pedaling) |
Watt-hours/mile @ 21 mph | 50 w-h/mile (no pedaling) |
Miles per dollar of AC wall charge | 400 miles per dollar |
Maximum range, battery only | 50 miles @ 17 mph, 30 miles @ 22 mph |
Maximum range w/summer solar | 200 miles/day |
Time to fully solar charge batteries | 2 hours |
MECHANICAL |
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Nose-to-tail length (bike + trailer) | 23.5 feet |
Maximum width | 41 inches |
Trailer touring cargo capacity | Approx. 15 cubic feet |
Bike weight w/o riders | 160 lbs |
Trailer weight | 300 lbs |
Total operating weight w/2 riders | 860 lbs |