Owner | Steve |
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Owner's Other EV | Electric Bike |
Location | Wickham, Western Australia Australia map |
Web/Email | WebPage |
Vehicle | 2007 - Home Made - Single Person Electric Scooter. This Scooter uses the front end of my wife's old bicycle and some scrap pieces of 50mm by 50mm by 3mm square tube for the scooter frame. |
Motor | Unite Motor 1018 Permanent Magnet DC PMDC gear motor 250W @ 24V 350W @ 36V 380rpm Magnet Material: Rare Earth Model: 1018 Approx: 7:1 attached gearbox reduction |
Drivetrain | DC Motor and chain drive to the rear wheel |
Controller | Home Made Programmed "PICAXE" Microcontroller. The microcontroller PWM function pulses a 30VDC (max), 100 Amp (max) "packaged" Mosfet at 250 Hz. The Mosfet is available in Australia from Jaycar Electronics, part# SY-4086. Variable speed is achieved by way of a "Hall Effect" throttle. |
Batteries | 2, 12.00 Volt, Lead-Acid, AGM 12VDC @18 Amp\Hr (each) |
System Voltage | 24 Volts |
Charger | Home Made 24 volt, 10 amp charger using a surplus 250 VA transformer, 35 Amp bridge rectifier and electrolytic capacitor |
DC/DC Converter | Home Made Low power DC to DC conversion was done with an LM7812 and LM7805 1 Amp positive voltage regulators. |
Top Speed | 12 MPH (19 KPH) |
Acceleration | Pretty good |
Range | Good enough to get me to the shops to buy the newspaper and get me back home. That's about 2 kilometers at which the battery voltage drops about .50 to .75 volts. |
Seating Capacity | 1 (and only one!) |
Tires | 26" bicycle tire for the front and a small wheelbarrow tire in the back |
Conversion Time | 4 months |
Conversion Cost | $250 |