Eric Hutchinson's Dual Motor Electric Pusher Trai

Owner	Eric Hutchinson
Owner's Other EVs	2008 Caddie Up Vegas High Roller 1999 Next Brand Bicycle
Location	Las Vegas, Nevada United States ^map
Web/Email	WebPage
Vehicle	Dual Motor Electric Pusher Trailer
Motor	Unite 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.
Drivetrain	Chain 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.
Batteries	4 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 Voltage	24 Volts
Charger	Schumacher SC-600A Charges at 2, 4 or 6 amps
Heater	Las Vegas heat is enough!
Top Speed	20 MPH (32 KPH) This would be with a slight downhill grade. On the flat it averages 17 mph.
Acceleration	Varies. I usually pedal before engaging the motor(s) to save battery power and to put less stress on the chain.
Range	15 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 Weight	76 Pounds (34 Kilograms) The trailer itself weighs 33 pounds, and the batteries weigh a total of 43 pounds.
Tires	The trailer has two 12.5 inch scooter tires.
Conversion Time	One 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

Dual Motor Electric Pusher Trailer