OwnerManolis Dimotakis
LocationPasadena, California US map
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VehicleMurray bike
cross between a mountain bike and a road bike (big, 20" triangle)
MotorPacific Scientific Permanent Magnet DC
.75 HP 24 Volt 1800 RPM
DrivetrainMotor drives a 14 tooth BMX freewheel sprocket, which turns a 54 tooth roadbike sprocket (mounted on the 'left' side of the wheel when looking at the rear)
Controller4QD Scoota
24 Volt, 120 A mp peak / 30 Amp continuous
Batteries2, 12.00 Volt, Lead-Acid, Flooded
12 Ah motorcycle starting batteries (sag to about 10V under the 35 amp load)
System Voltage24 Volts
Charger
voltage regulated power supply (charging in series at 24 Volt and 1 Amp
HeaterThe controller gets too hot to touch for over 1/2 a second after riding up and down {steep} hills
Instrumentationa) bicycle computer (speed, avg. speed, distance, odometer, etc.) b) multimeter
Top Speed25 MPH (40 KPH)
on flat and slight uphill
Seating Capacity1 adult
Curb Weight85 Pounds (38 Kilograms)
17.5 battery, 25 motor, 5-10 misc, and 35-40 bike
Tires26" x 1 3/8" 'smooth' tires @ 75 psi (they'll; take 90, but i've got steel rims and don't want to push it)
So far, I have ~30 miles on the bike (as of 8/4/1999),about 20 of them electric. I plan on adding either two 1 Amp chargers, or building something myself with a faster charge rate. The batteries sag to about 10V under load, so I'm lookin' for new ones, but other than that, the bike works great!

code by jerry