|Owner||Bob Dahse/ Larisa Walk|
|Owner's Other EV||1979 Porsche 924|
|Location||Winona, Minnesota US map|
|Vehicle||2006 Cartrike Road |
Electric trike conversions using stock Catrike "Road"s, Crystalyte hub motors and controllers, and DeWalt lithium batteries.
|Motor||Crystalyte Phoenix Racer Permanent Magnet DC|
We used the speed-wound "Racer" model since we were using 20-inch wheels that already offered plenty of torque. From Electric Rider (EV Depot) in Lawrence, KS (www.electricrider.com).
|Drivetrain||Direct drive in rear wheel using approx. 1200-watt permanent-magnet hub motor.|
|Controller||Crystalyte 3640, 36-volt, 40-amp.|
Stock 36-volt, pulse-width controller (from www.electricrider.com).
|Batteries||4 Dewalt DC9360, 36.00 Volt, Lithium-Ion|
These are off-the-shelf Dewalt packs, made from A123 System's M1 lithium iron-nanophosphate cells, wired in parallel.
|System Voltage||36 Volts|
|Charger||Solar Innovative Energy Systems VC-5|
The onboard solar panel is composed of two "24-volt" (40-volt peak), stainless steel backed, plastic coated, polycrystalline panels, wired in parallel. Usually, the bulk charge is from our house PV system's Kyocera KC-120's.
|Top Speed||24 MPH (38 KPH)|
Top speed on level, smooth, flat, windless road, without pedaling.
|Acceleration||This depends on how much you pedal with it, slope, road surface, etc. It will "burn gravel" without any rider input.|
|Range||30 Miles (48 Kilometers)|
This range assume rider input and is based on actual use on a sunny, warm day. I like to pedal, so I use the electric mainly for boost up hills. 300 watt-hours is a lot of range if you use it wisely!
|Watt Hours/Mile||10 Wh/Mile |
This also assume rider input for all but hills, and is based on my experience commuting with it.
|Seating Capacity||1 adult, plus a trailer load of up to 150 pounds using our Burley.|
|Curb Weight||60 Pounds (27 Kilograms)|
We doubled the trike's weight, but it was well worth it!!
|Tires||Front: Schwalbe 20" x 1.75", Rear: Primo "The Wall" 20" x 2.10"|
|Conversion Time||1 week of spare time.|
|Conversion Cost||About $3500 each, including everything.|
|Additional Features||We built two of these and both have foam tubing added under the seat webbing to reduce road shock on gravel/bumps. The Dewalt packs trickle charge at 20 watts anytime the onboard PV is in the sun. When on the home PV system, a full charge takes about an hour. When away from home, charging is done using the standard AC DeWalt charger, modified with a cord that plugs directly into 3 of the packs while one pack is pulled from its mount and plugged into the charger directly (so the charger can sense that there is a load). AC charging a dead system takes about 4 hours. Adding cruise control has made climbing bumpy gravel hills a lot easier!|
|What a thrill to ride! These make steep hills so easy. The only drawback with PM motors is some slight drag when unpowered. It translates into about 1 mph loss for me. I don't use the trikes when temps get under 40F since the power output drops on hills.|