LocationBudapest, Central Hungary Hungary map
Web/EmailWebPage email image
Vehicle2014 Bobber
Electric bobber for rare peoples.
water cutted Al 6082 aircraft material.
MotorCrystalyte Crown TC-80 Brushless DC
Crystalyte TC-80 hub motor.
maximum 108V 90A power
nominal and for not crazy users 48-72V 50-60A
BigBoy use 48V 50A (enough for city ride)
Controller Customized Grin Tech Infineon Controller
Modified stock Grin Tech Infineon 72V 40A
Throttle controlled regen brake
Modified shunt and some other parts
Batteries2 Custom made from prismatic cells , 48.00 Volt, Lithium Iron Phosphate
16 prismatic cells
one battery is 48V (52-53) 20Ah
BMS included one pack have 1x16cell BMS
two serial battery on board 48V (52-53) 40Ah
System Voltage52 Volts
ChargerCrystalyte 48V 12A
58,4V and 12A (3,65V per cells)
normal charge 3 hours
fast charge with curtis 48V 40A charger is <1hour
DC/DC Converter custom DC-DC 60V -> 13,8V 3A
3A enough for LED head/tail light and cloud horn
InstrumentationGrin Tech CYCLE ANALYST
I love it!
Top Speed70 MPH (112 KPH)
easy ride to 35mph (56km/h)
littlebit havier to 60mph (98km/h)
hard ride with over 60mph (98km/h)

Crystalyte TC-80 motor is 10rpm/volts
two parallel battery can 52V this is 44mph
two serial battery (switchable on board) can
104V this is double
speed. But exactly less than double is 70mph
Acceleration52V 50A (exactly 51,5A) is 2500-2600W
controller limited power
good enought for city ride. stop and go.
redlights and etc.
better then cars in traffic
Range60 Miles (96 Kilometers)
60 miles with city ride 40mph in mountain town
70-80 miles with city ride 40mph in flat town
50 miles in heavy traffic with many stop and go
and high speeds
between lights (20-60mph)

Watt Hours/Mile34 Wh/Mile
in average town with hills and flats and lights
EV Miles
Current:1,300 Miles (2,091 Kilometers)
    As of 5/28/2015
Seating Capacity1 adult
Curb Weight115 Pounds (52 Kilograms)
Frame is 44lbs (20kg)
Battery is 33lbs (15kg)
Tires26x4.00 fat bike tyre and 4" wide rim
Conversion Time2m design
2w build
Conversion Cost2600$ (2300EUR)
Additional Featureswe have sidecar version with 300miles (480km) range
that have 2 motor, second in sidecar wheel. maximum speed is almost
100mph (160km/h) with
crystalite TC100 motor
many pictures here


code by jerry