EV-propulsionllc
"The EV conversionists'"
conversions since 1975
QUALITY ELECTRIC VEHICLE CONVERSIONS AND QUALITY PARTS
AVAILABLE CONTROLLERS
                      AND  THROTTLES
Models 1231C/1221C
The Curtis PMC models 1231C and 1221C motor
speed controllers provide smooth, silent, efficient
and cost effective speed control for on-road
electric vehicle applications. These controllers
utilize power MOSFET technology, pioneered by
Curtis PMC, to provide benefits unavailable with
older speed control systems.
The Curtis PMC models 1231C and 1221C are high
power, heavy duty MOSFET electronic motor
speed controllers which are ideal for use in
electric commuter vehicles, light delivery
trucks, and other vehicles utilizing up to 144 volts.
F e a t u r e s
very high efficiency and quiet operation. Costs, heatsinking
requirements and motor and battery losses are reduced. Low
end torque, range and battery life are increased.
• Environmental protection provided by a sealed (factory
serviceable), rugged, anodized aluminum extrusion housing.
control signals. Plated solid copper busses used for all power
connections.
• Thermal protection and compensation circuit provides undertemperature
cutback, constant current limit over operating
range, and linear rollback in over-temperature. No sudden
loss of power under any thermal conditions.
• Frequency shifting from 15 kHz to 1.5 kHz at low throttle
settings provides improved protection against stalled motors.
• Heavy duty power base in 1231C contains additional active
devices to improve power handling capability.
• Potentiometer fault protection circuitry disables the controller
if the throttle wires become open.
• High Pedal Disable prevents controller operation if the key
switch is turned on while throttle is applied.
• Optional heatsink (p/n 16286) for model 1231C controller
improves thermal capability.
• No adjustments are required.
• Simple installation — Uses a two wire throttle potentiometer.
S P E C I F I C AT I O N S
• Frequency of Operation: 15/1.5 kHz
• Standby Current: less than 30 mA
• Ambient Operating Temperature Range: -25°C to 50°C
• Controller Temperature Cutback Point: -25°C and +85°C
1690.00 + shipping
Alltrax Controllers

Alltrax is a USA based company that builds rugged electric motor
controllers using the latest power electronics technology. The physical
aspect provides flexible and convenient solutions for various electric
motors used in NEV (Neighborhood Electric Vehicles), golf car, people
applications as well as our patent pending EMIS technology.

What Sets Alltrax Apart from the Competition?
* Made in the USA
* Our products reduce dependency on hydrocarbon fuels and that is
great for the environment
* The technology was actually developed "at the race track"
* Full epoxy encapsulated product is impervious to the elements
* On-staff customer service.
* Engineered solutions and decades of systems engineering provide you
the tools to accomplish your goals; on time, every time.
* A performance replacement to other motor controllers
* High quality, vertically integrated manufacturing.
* Controllers are programmable using free software and your PC or
Laptop  
CURTIS 1231 C
CURTIS 1221C ALSO AVAILABLE
>>>
ALLTRAX AXE 7245 CONTROLLER
72 volt   450 amp
795.00 + shipping

Build a car for you, not for them ! (the oil companies!)       
                                          
EV-propulsion llc
"The EV conversionists'"
        conversions since 1975
QUALITY ELECTRIC VEHICLE CONVERSIONS AND QUALITY PARTS
The MODEL 810 EXCELerator is a heavy duty
industrial accelerator. The special linear design
provides a smooth resistance from the initial
switch through the final (1A) switch. A standard
feature is the ball joint on the end of the slide
arm that, combined with the linear action,
provides a variety of mounting options. The unit
can be used in applications where a resistance of
0 to 5000 or 5000 to 0 ohms is required.
    ELECTRICAL SPECIFICATIONS

Potentiometer - 5000 ohms +/- 10% linear,
                carbon film.
                Active region=1.25 inch

Microswitches - Spot, silver cadmium oxide
               Rated- 10A @ 125 v.a.c.
                           3A @ 48 v.d.c.
                        1.5A @ 72 v.d.c.

Harness-       10" long, #18 stranded wire
             80* C pvc protective jacket
MECHANICAL SPECIFICATIONS

Action - linear push or pull

Stops- internal at travel limits

Travel - 1.25 inches
     First .125 inch actuates initial         
                 microswitch
     Last .125 inch actuates final         
Return Spring- initial-4 pounds
               final-14 pounds

Shaft- .250 inch dia. 1/4-28 thread one
             end, ball joint the other end

Bearings-long life, perm lubed
molybdenum disulphide filled nylon
                         THROTTLE CONTROLS
CURTIS PB-1   throttle also available

      specifications coming soon.........