Owner | John Bidwell | ||||
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Owner's Other EVs | Mountain Bike 1987 Kawasaki Ninja 750 2004 Kawasaki KX125 High Performance Motorbike | ||||
Location | Fort Collins, Colorado United States map | ||||
Vehicle | 2006 Schwinn Voyager SPT 29er Hybrid Economical HUB conversion bicycle with crisp performance from LIPO custom battery Modules | ||||
Motor | Crystalyte 408 brushless 3-Phase AC Relatively Light weight motor configured for top speed not torque | ||||
Drivetrain | Model 408 Crystalyte rear hub motor with 7 speed freewheel | ||||
Controller | Grin Tech Infineon Chip Brushless Small reliable BLDC Controller 40Amp 72 Volts 26 Volt cutout | ||||
Batteries | 44.40 Volt, Lithium-Polymer Bidwelldesign Custom battery modules 45 volts X 5 amphrs from 2 Turnigy 22.2 volt batteries in series. Turnigy batteries are packaged in a standard plastic case (see photo). That Module is removable from standard aluminum mounting enclosure. Battery modules can be quickly swapped with fresh pack and/or easily removed for charging. | ||||
System Voltage | 45 Volts | ||||
Charger | Thunder AC6 Uses 2 6S balancing chargers in parallel for fast charging of a standard battery module | ||||
Heater | None | ||||
DC/DC Converter | None | ||||
Instrumentation | Bicycle Odometer LIPO Battery Monitor sees each cell voltage for balancing connector | ||||
Top Speed | 24 MPH (38 KPH) Bicycle gearing well matched for rider contribution during cruising at top speed | ||||
Acceleration | Very snappy with high amp LIPO battery modules compared to the original NIMHD battery pack | ||||
Range | 12 Miles (19 Kilometers) 12 miles per standard battery module at 20 MPH with moderate pedaling. Carry a backup battery module or 2 and double or triple your range to 24 miles or 36 miles | ||||
Watt Hours/Mile | 18 Wh/Mile 18 whr/mile at 20 MPH with some pedaling 23.5 whr/Mile at 24 MPH with some pedaling | ||||
EV Miles |
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Seating Capacity | 1 adults | ||||
Curb Weight | 54 Pounds (24 Kilograms) Includes one 4 LB battery Module. Each additional battery module is 4 LBS. | ||||
Tires | 700 X 40C | ||||
Conversion Cost | Motor $293 Controller $200 Batteries $150 for two Turnigy 6S 5 amphr 40C Bike $217 Misc $100 | ||||
Additional Features | The 4 LB Modular battery approach allows for carrying of extra range extending modules in a backpack or saddle bags. These modules are easily removed for charging or parking security. This standard plastic 48 volt 5 amphr battery module is very light(4 LB), low cost ~ $150 and also usable on other vehicles (see Slick electric motorbike on EVALBUM). The bicycle is nimble and easily navigates around town and is easy to carry on bus systems or by car bike rack. The motor is very smooth and quiet The Throttle has a set of LEDs that tell battery charge. Lipo battery Checker gives readout for every cell (useful for checking cell balance which is important for LIPOs) | ||||
Bicycle purchased used from a friend (Tim Tillson) who put the original conversion together using NIMHD batteries. The NIMHD batteries(two 24 volt 13 amphr) were heavy, large, hard to mount, and low power. They were however easy to charge and safe and seem to have lasted. I used the bicycle as a test bed for various battery mounting approaches and finally came up with the Modular plastic box with two standard LIPO batteries inside. This plastic moduule is easily mounted and removable from an aluminum electronics project box with one end removed. |