Trailer Side ViewTrailer Rear ViewTrailer Drivetrain
OwnerEric Hutchinson
Owner's Other EVs2008 Caddie Up
Vegas High Roller
1999 Next Brand Bicycle
LocationLas Vegas, Nevada US map
Web/EmailWebPage email image
Vehicle Dual Motor Electric Pusher Trailer
MotorUnite Motor MY1016 Permanent Magnet DC
I have two motors on this trailer, which are both MY1016. One is 250 watts and the other is 350 watts.
DrivetrainChain drive. Front sprockets 11 tooth, back sprocket 55 tooth with a 12.5 inch tire.
Controller
No controller. I have one on/off switch for each motor so I can control the power that is needed.
Batteries4 Universal Batteries UB12180 and Scoot N Go, 12.00 Volt, Lead-Acid, AGM
I now have two 18A, 12V batteries to power the 350W motor, and two 12A, 12V batteries to power the 250W motor.
System Voltage24 Volts
ChargerSchumacher SC-600A
Charges at 2, 4 or 6 amps
HeaterLas Vegas heat is enough!
Top Speed20 MPH (32 KPH)
This would be with a slight downhill grade. On the flat it averages 17 mph.
AccelerationVaries. I usually pedal before engaging the motor(s) to save battery power and to put less stress on the chain.
Range15 Miles (24 Kilometers)
Now that I have four batteries, I can ride for almost an hour, and usually average around 15mph depending on riding conditions.
Curb Weight76 Pounds (34 Kilograms)
The trailer itself weighs 33 pounds, and the batteries weigh a total of 43 pounds.
TiresThe trailer has two 12.5 inch scooter tires.
Conversion TimeOne month. I had several failed designs before I got this one working!
Conversion Cost$230
Here is a cost breakdown:

Scoot N Go scooter: $55
MY1016 350W Motor: $55
Batteries: $50
Sprocket: $10
Chain: $20
Building supplies and hardware: $40

I built this scooter by first chopping the used scooter in half and attaching a wood frame with an extra wheel. I tried building a one wheel trailer, but I had problems with stability. The idea for the hitch came from the Instructables website, and is made from a caster wheel bracket. I originally started with one 350W motor, but since I had an extra 250W motor lying around I decided to add this. Both motors are connected to the same chain. I notice a big difference in power with this motor added!

Click above where it says 'Webpage' to view a YouTube video of this trailer in action.

***UPDATE***

3/19/2010
I have added another set of batteries from the old Scoot N Go Scooter. These are two 12 volt, 12 amp batteries which are used to power the 250W motor. The other two 12 volt, 18 amp batteries power the 350W motor. Now I can ride for almost an hour on strictly the batteries, which gives about a 15 mile range.

code by jerry