Scooter 2
OwnerKeith Payne
LocationDunedin, Otago New Zealand map
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Vehicle2006 Gee Bykes
The scooter started it's life as a
horribly underpowered 500W
scooter made by Gee Bykes.
MotorGolden Motors like a MW16C from Golden Motors Brushless DC
Surprisingly loud for a hub motor, running
it at approx 3kW,
rather than its rated 2kW, only gets a
little warm after a long
uphill stretch.
DrivetrainRear Hub motor
ControllerKelly KEB72331
Originally used the Kelly KEB48221, but
decided to up the
voltage to 60V for higher top speed. Works
well, and easy to
configure. Regen works well.
Batteries40 Headway 20s2P 10AHr cells, 3.30 Volt, Lithium Iron Phosphate
20s2p = 40 x Headway 10AHr cells
System Voltage66 Volts
Using a 8Amp charger from
DC/DC Converter Lineage power QBW018A0B
Digikey part number 555-1109-ND
InstrumentationCustom cycle analyst type display.
Top Speed35 MPH (56 KPH)
At 66V the top speed is about 55km/hr.
Plenty around town, handles the hills
pretty well too,
certainly better than 50cc scooters.
Acceleration0-30km/hr in 5 seconds
0-50km/hr in 9 seconds

0-5km/hr is pretty weak, but after that
it seems to hit a good power band and
feels good!
Range22 Miles (35 Kilometers)
35km over hilly terrain, probably more
like 40 on the flat.
(one rider only)
EV Miles
Start:9 Miles (14 Kilometers)
Current:3,000 Miles (4,827 Kilometers)
Total:2,991 Miles (4,812 Kilometers)
    As of 1/13/2011
Seating Capacity2 people, fine on the flat, but then it
struggles with steeper
Curb Weight198 Pounds (89 Kilograms)
Rear wheel 47kg, front wheel 43kg
Not a light construction at all, all the
plastic bits alone weigh
The batteries weigh in at only 15kg.
TiresStandard scooter tyres
Conversion TimeAbout 4 months.
Conversion CostApprox NZ$2600 - much more than a brand
new petrol scooter, but reasonable for an
electric one.
First set of Lead acid batteries (60V, 24Ahr) did about 150
good cycles, then about another 50 weak ones until I was
only getting about 3AHrs out of them.

Upgraded the battery pack to Headway cells, with a nice BMS
so hoping to get 1000+ cycles from them. Certainly much
lighter and allow much more space for groceries etc.

code by jerry