OwnerEllis Madsen
Owner's Other EVsLowTrike
Hybrid Powered bicycle
LocationLouisville, Kentucky US map
Email email image
Vehicle2008 Brico v2.0
parts of 3 bicycles and one stationary bike obtained off the
street on neighborhood "junk" day
MotorCurrie 300W 24V Brushless DC
Drivetraintwo chains: #25 and bicycle, each having a hand-made
tensioner and reduction gears necessary to get the proper
speed.
ControllerCurrie internal Hall effect
I make a "thumb nub" controller on a 5KOhm pot.
Batteries2 Werker WK12-18NB, 12.00 Volt, Lead-Acid, AGM
from BatterySpace.com
System Voltage24 Volts
Charger
I use either a 12V 3A smart charger from 120VAC or charge
from the a 10W portable solar array that I made.
Heatera heavy coat
InstrumentationI made a "fuel gauge" from the LED circuit of a surplus
German automotive battery charger.
Top Speed9 MPH (14 KPH)
estimated. For me, a 300W motor is the top of the
fun/safety curve. Some greater acceleration might be nice,
but usually it's not needed. Anyway, the lower the power
drain, the longer the battery life, generally speaking.
AccelerationFair. I accelerate slowly to preserve the chains, which I'm
sure angers motorists behind me, but my overall progress on
the stop-light controlled streets in no less than car traffic. I
take the less travelled back streets anyway.
Range7 Miles (11 Kilometers)
estimated at 50% discharge
Watt Hours/Mile300W/24V = 12.5A
Seating Capacity1 adult
Curb Weight57 Pounds (25 Kilograms)
without batteries which add 25 lbs.
Tiresbicycle tube-type
Conversion Time4 months
Conversion CostUS$225.
Additional Featuresrear-view mirror, head light, cargo rack, 5 LED hand-made break light, cut off switch,
master switch and a security extension made of a German 220V plug/socket.
This is my e-moped. I made it using only a hand power drill and a manual hack saw.

I made it with a low CG and low step-over because I'm old and arthritic. It has a back rest that I originally put on for comfort, but have since found out that it acilitate the use of "Fred Flintstone" brakes. I didn't want to buy and fit disk brakes but was concerned that I'd be able to decelerate fast enough. In fact the "Flintstones" work really well and also stabilize the stop very nicely. (A cardinal rule for any vehicle should be that you should never go faster than you can reasonably stop.) Yaba Daba Doo!

code by jerry