Kits to Convert Bikes to Electric Betterbikes™
Power System quick-menu Overview Phoenix Roadrunner Sparrow LiFePO4 Lithium EV Battery
Owner's Manual Installation Guide
The Sparrow (Crystalyte Motor Model 409) is a brushed motor electric bike kit boasting power and speed that surpasses systems on most ready-made electric bikes. Turn almost any bicycle into real electric transportation with the Sparrow system. This is the simplest system we make, using a brushed motor and a compact controller.
Sparrow front motors are available on 16 inch, 20 inch, 24 inch, and 26 inch wheels. Rear wheels are available by special order. Dropout width is 100mm for front wheels and 135mm for rear wheels. The axle is 9mm in diameter. Sparrow motors are 90 mm wide, extending 65 mm up the fork from the axle. Weight is 15.5 pounds laced to the rim.
Dimensions
This chart shows the performance of each electric bike kit system on the same bike on the same road with the same rider. The test begins at a complete stop, then full throttle is applied with no pedaling. Batteries UB12120, rider 140 lbs, level road, low wind, dry asphalt. The graph and the table below it show the speed (MPH) attained at intervals of one second from zero to the top speed. We believe this is more useful information than wattage since it shows actual power to the ground rather than power consumed. To calculate wattage, multiply volts times amps.
Range (distance per charge) depends on many factors including tire tread pattern, tire pressure, weight of rider, wind, hills, stop-and-go, rider driving habits. We expect 10-13 miles from the Sparrow using 10AH batteries, no pedaling, regular city traffic, running as hard and fast as we can. Adding pedal power helps, particularly at start-up. An experienced rider willing to do some pedaling and keeping speed under 15 MPH may get more than 20 miles on a charge. As with a car, the faster you take-off and the faster you run, the more fuel per mile you will use.
RANGE
ChartSealed Lead Acid Battery (12 AH) LiFePO4 EV Battery (48V 20 AH) Weight 40 lbs 29.2 lbs Phoenix Racer 4840 Capacity 12AH 20AH Range 36 MPH 7-9 26 Range 20 MPH 18* 61 Weight 35 lbs 29.2 lbs Capacity 10AH 20AH RoadRunner 4820 Range Full Throttle 14* 88* Sparrow 4825 Range Full Throttle 13* 80* * Estimated. We will perform and report road tests as we complete them. NEW! For 48 volt systems, you can substitute the bag and rack for these battery racks. Just click the option box to make the substitution. Sparrow 3625 Complete
What's included?$489.99
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Sparrow 4825 Complete
What's included?$549.99
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Sparrow 3625 Power System Only
What's included?$299.99
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Sparrow 4825 Power System Only
What's included?$349.99
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48 Volt Battery mounting options Standard bag and basket Steel battery hangers
