Gyrosurfer

Owner	John Dingley
Owner's Other EV	Self-balancing one wheeled vehicle
Location	Swansea, Wales United Kingdom map
Web	WebPage
Vehicle	2009 Self-balancing electric skateboard with 2 wheels so can turn even when stationary. Developed from an earlier model also on this website.
Motor	MY Permanent Magnet DC Electric scooter motor x 2
Drivetrain	2 electric motors and chains
Controller	Sabertooth Robot controller
Batteries	24.00 Volt, Lithium-Polymer 24V 12Ah LiFePO4 Chinese e-bike battery imported via Hong-Kong supplier
System Voltage	24 Volts
Charger	3 Amp Chinese charger came with battery pack.
Heater	None
Instrumentation	Battery level LED indicator
Top Speed	12 MPH (19 KPH) Theoretical top speed. It requires some courage when the wheels are both in the center to run this machine at top speed!
Range	10 Miles (16 Kilometers) Has not been tested in real life but theoretical range is >10 miles.
EV Miles	Current: 1 Miles (1 Kilometers)       As of 4/5/2009
Seating Capacity	1 (standing)
Curb Weight	30 Pounds (13 Kilograms) My original monowheel machine is on this site also. This was very heavy and awkward shape to pick up. This time I have concentrated on a much lighter machine with similar performance.
Tires	Polypropylene solid
Conversion Time	Way too much.
Conversion Cost	About $400-500
Additional Features	Not many: Side handle for user to pick it up by. Hand radio controller - steering is done using radio linked hand controller. Socket for charger Dead man switch on board - if you fall off motor cuts out.
Not your mainstream EV but very good fun to develop and ride as it is one of those machines that "shouldn't" work. Still is a work in progress. More practical and portable than my original version although not so good on steep inlines as the original.

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