"Innovation in Motion,
Powered by Electricity"
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Our "Original" AC Drive System For Golf Cars Just Got A Whole Lot Better With The Introduction of an Automatic Parking Brake!!
HPEVS Golf Car Drive Systems
The "ORIGINAL", and still the best AC drive system available for your golf car!
Now Our Golf Car Drive Systems Come With
a 5 Year Warranty!!
The "ORIGINAL", and still the best AC drive system available for your golf car!
Now Our Golf Car Drive Systems Come With
a 5 Year Warranty!!
We have Designed and Developed A Lithium-Ion Battery Kit For Golf Cars That Is Completely Integrated With The HPEVS Golf Car AC Drive Systems
144 Volt Automobile Systems
The Scion pictured has the first prototype!
The Scion pictured has the first prototype!
Mining Vehicle Systems
Specialty motors designed and built for your specific applications!
To get information, please click on "Details" tab below.
Specialty motors designed and built for your specific applications!
To get information, please click on "Details" tab below.
96 Volt Automotive Systems
This is one of many systems available for auto conversions!
To get information, please click on "Details" tab below.
This is one of many systems available for auto conversions!
To get information, please click on "Details" tab below.
Motorcycle Systems
WHAT A RUSH!!
To get information, please click on "Details" tab below.
WHAT A RUSH!!
To get information, please click on "Details" tab below.
Utility Vehicle Systems
We have a drive system to fulfill your utility vehicle requirements!
To get information, please click on "Details" tab below.
We have a drive system to fulfill your utility vehicle requirements!
To get information, please click on "Details" tab below.
Diagnostic and Troubleshooting Documentation.
To obtain this information, please click on "Details" tab below.
To obtain this information, please click on "Details" tab below.
We have added to our website dimensional drawings of the Curtis Instruments controllers.
These drawings can be helpful during the design phase of a project.
To get information, please click on "Details" tab below.
These drawings can be helpful during the design phase of a project.
To get information, please click on "Details" tab below.
Hosts Mike Brewer and Edd China From The TV Show Wheeler Dealers Teamed Up with EV West to Install a HPEVS Drive System Into a 1985 Maserati Bi Turbo
It is Amazing To Us To See What Can Be Done With Our Drive Systems! Here Is Yet Another Example!
The Folks at EV West Have Created a Vehicle with One of Our Drive Systems!
To get information, please click on "Details" tab below.
To get information, please click on "Details" tab below.

Innovation in Motion, Powered by Electricity
What's New
We have included a variation of the AC-20 motor called AC-23! The motor is wound to produce higher torgue compared to the AC-20 motor! Please check AC-2X motor page for more information!AC 2x Family of Motors
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AC-50 Power Graphs
Here are the results for the AC-50 that came from our in house dynamometer. The graphs are attached to the tabs below.
Published graphs are for INFORMATIONAL purposes ONLY and are NOT intended to be used to calculate motor efficiencies.
- Instructions
- AC-50
1. Click on the tab for the motor of interest.
2. When the tab has been selected, the tab will turn to a gray background. This signifies that the tab selected is active.
3. First, select the motor you want information on
4. Then select either imperial or metric
5. Next, select the voltage
6. And finally select either "Peak Graphs" or "Continuous Graphs".
7. If you selected the "Peak Graphs", select the amperage that you want to look at.
- Imperial
- Metric
- 48 Volt
- 72 Volt
- 96 Volt
- 108 Volt
- 144 Volt
- 48 Volt Peak Graph
- Continuous Graphs
- 650 amp
AC50 at 48 Volts/650 Amps Imperial Peak ![]() Click on image for PDF file to print. |
AC50 at 48 Volts Fan Cooled ![]() Click on Image to Download |
AC50 at 48 Volts NON Vented NO Fan Cooling ![]() Click on Image to Download |
- 72 Volt Peak Graph
- Continuous Graphs
- 550 amp
- 650 amp
AC50 at 72 Volts/550 Amps Imperial Peak ![]() Click on image for PDF file to print. |
AC50 at 72 Volts/650 Amps Imperial Peak ![]() Click on image for PDF file to print. |
AC50 at 72 Volts Fan Cooled ![]() Click on Image to Download |
AC50 at 72 Volts NON Vented NO Fan Cooling ![]() Click on Image to Download |
- 96 Volt Peak Graph
- Continuous Graphs
- 650 amp
AC50 at 96 Volts/650 Amps Imperial Peak ![]() Click on image for PDF file to print. |
AC50 at 96 Volts Fan Cooled ![]() Click on Image to Download |
AC50 at 96 Volts NON Vented NO Fan Cooling ![]() Click on Image to Download |
- 108 Volt Peak Graph
- 650 amp
AC50 at 108 Volts/650 Amps Imperial Peak ![]() Click on image for PDF file to print. |
- 144 Volt Peak Graph
- Continuous Graphs
- 500 amp
AC50 at 144 Volts/500 Amps Imperial Peak ![]() Click on image for PDF file to print. |
AC50 at 144 Volts Fan Cooled ![]() Click on Image to Download |
AC50 at 144 Volts NON Vented NO Fan Cooling ![]() Click on Image to Download |
- 48 Volt
- 72 Volt
- 96 Volt
- 108 Volt
- 144 Volt
- 48 Volt Peak Graph
- Continuous Graphs
- 650 amp
AC50 at 48 Volts/650 Amps Metric Peak ![]() Click on image for PDF file to print. |
AC50 at 48 Volts Fan Cooled ![]() Click on Image to Download |
AC50 at 48 Volts NON Vented NO Fan Cooling ![]() Click on Image to Download |
- 72 Volt Peak Graph
- Continuous Graphs
- 550 amp
- 650 amp
AC50 at 72 Volts/550 Amps Metric Peak ![]() Click on image for PDF file to print. |
AC50 at 72 Volts/650 Amps Metric Peak ![]() Click on image for PDF file to print. |
AC50 at 72 Volts Fan Cooled ![]() Click on Image to Download |
AC50 at 72 Volts NON Vented NO Fan Cooling ![]() Click on Image to Download |
- 96 Volt Peak Graph
- Continuous Graphs
- 650 amp
AC50 at 96 Volts/650 Amps Metric Peak ![]() Click on image for PDF file to print. |
AC50 at 96 Volts Fan Cooled ![]() Click on Image to Download |
AC50 at 96 Volts NON Vented NO Fan Cooling ![]() Click on Image to Download |
- 108 Volt Peak Graph
- 650 amp
AC50 at 108 Volts/650 Amps Metric Peak ![]() Click on image for PDF file to print. |
- 144 Volt Peak Graph
- Continuous Graphs
- 500 amp
AC50 at 144 Volts/500 Amps Metric Peak ![]() Click on image for PDF file to print. |
AC50 at 144 Volts Fan Cooled ![]() Click on Image to Download |
AC50 at 144 Volts NON Vented NO Fan Cooling ![]() Click on Image to Download |