40hp Electric Drive System 72-80v 350a For Marine Or Ev

40hp Electric Drive System 72-80v 350a For Marine Or Ev

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40hp Electric Drive System 72-80v 350a For Marine Or Ev:

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PMAC-DS Drive System
40hp PMAC-DS Brushless Motor and Sevcon Gen4 Controller.

The Electric Motorsport PMAC DS kit will convert your gas or diesel engine to clean, silent electric propulsion! This kit is designed for inboard or outboard electric marine drive system conversions (specifically s.ailboats or light boats), but is also suitable for many other applications. Electric drive systems of this power usually cost $7,500 and up, but this *pre-assembled kit makes it affordable at about a third of the cost.


  • Variable Throttle for smooth speed control
  • Brushless Motor design makes brush maintenance a thing of the past.
  • Easy forward and reverse switching with a flip of a switch
  • Motor and Controller support Regen which means with an appropriate prop this system can recapture energy to help recharge the battery pack. So under a heavy sail this system can be generating power off the dragging prop*.
  • Drive motor can be mounted inboard OR outboard.
  • *Pre-assembled and tested releiving you of any guesswork.

Click on an image above to enlarge in a new window ^

Kit Includes

  • Mars Brushless PMAC motor
  • Gen4 Controller
  • Pot box throttle
  • Foreward/Reverse switch
  • Ignition key
  • Contactor
  • Fuse
  • Wiring harness
Motor Specifications

  • Brushless Permanent Magnet Motor
  • 4 pole motor (8 magnets).
  • Power: 12 kW Cont, 30 kW Peak
  • Phase to Phase winding resistance: 0.013 Ohms
  • Maximum recommended rotor speed: 5000 RPM
  • Voltage: 0 to 96 VDC input to the control
  • Inertia: 45 Kg Cm Squared
  • Current: 150 Amps AC continuous (180 Amps DC into the motor control)
  • Peak current: 420 Amps AC for 1 minute (600 Amps DC into the motor control)
  • Weight: 35 pounds
  • Peak Stall Torque: 93 Nm.
  • Cooling: Open Frame, Fan Cooled motor.
Controller Specifications

The Gen4-series represent the absolute latest design concept for compact and reliable AC Controllers. They feature the smallest footprint in the industry for their power capability. The high efficiency of these controller makes it possible to integrate them into very tight spaces without sacrificing performance. The design has been optimized for the lowest possible cost while maintaining superior reliability in the most demanding applications.

The Gen4 controllers are designed to control either AC Asynchronous motors or PMAC Synchronous motors. This feature allows users to select optimal motor solutions for any application. Both UVW and encoder AB inputs are provided for maximum flexibility.


Sealed IP66 enclosure
Integrated logic circuit (I/O)
Advanced flux vector control
Autocheck - system diagnostics
Sensorless control (depending on application)
CANopen product

Nominal Voltage 72 - 80 VDC Operating Voltage 39.1-116 VDC Cont. Current (120s) 140A Peak Current (120s) 350A Boost (10s) 420A

Please note: Due to the high RPM of the Mars Brushless motor, we recommend using a gear reduction system rather than direct-drive. This will improve efficiency, provide proper torque and cooling, and prevent cavitation. Typical reduction is around 1.5:1 to 3:1, but will depend on the required propeller RPM needed to reach hull speed. Proper reduction will enable the motor to spin your propeller for the required hull speed. This number can be estimated using the 50 rpm/volt constant (72 volts * 50 rpm/volt ~ 3600 rpm max). *Appropriate prop required based on motor rpm and the boats hull speed.

*** Although this kit is pre-assembled, there are certain tasks that you will need to do prior to use. You will need to connect the motor, check all the nuts, bolts, and screws to make sure they have adquate tightness (8 foot pounds of torque on the terminals) after shipping, and assemble and connect your battery pack.
These kits are made to order. Please allow approximately 14 days for assembly and testing prior to shipping.


PMAC Technical

Sevcon Gen4
Data Sheet

Please use the provided shipping calculator to determine the shipping cost to your location. Free Local pickup is OK.

We ship to every state within the continental United States and its territories. We offer several shipping options. Most items ship within 1 to 3 business days (Monday - Friday) of the order placed. Some items may be on backorder and may take longer to ship. Orders placed after 2:00pm EST will not ship the same day unless otherwise stated by a Sales Representative. A tracking number is not always available in our office and may take time to receive. In the event that items ordered are damaged or lost during the shipping process, the recovery time to settle the case with carriers is a lengthy one (sometimes several months). We will try to speed this process along as much as possible. Our Company charges a handling fee on all items shipped.


Before returning any items to Electric Motorsport (EMS), you must contact us by Phone or Email Prior to shipping to receive an RMA (Return Merchandise Authorization) number. This number is used to track returned items and must be clearly marked on a label attached to the shipping box. PACKAGES WITHOUT AN RMA WILL BE REFUSED AND RETURNED TO THE SHIPPER. NO CREDIT WILL BE ISSUED FOR ANY ITEMS WITHOUT AN "RMA" NUMBER. Items must be returned within 14 days from the delivery date. All returned items will be subjected to a 20% restocking fee and must be returned new and unused in their original packaging. Items returned in other than their original condition will be considered used and a higher restocking fee will be proportionally assesed. Consumables such as Batteries are non-refundable. Shipping charges are non-refundable. Cancelled orders that have been processed are subject to a 10% cancellation fee. Please contact us for restrictions, such as items sold "as is" or used products. If you wish to exchange an item purchased, we will issue a store credit for the full purchase price (not including shipping) and apply this credit to the replacement item(s) after receiving the return shipment. If an item is being returned due to our error, we will either refund your item or offer a store credit. If you have a defective item, we may direct you to send your product directly to the manufacturer. Please do not attempt to send an item back to us unless you obtain an RMA number and are instructed to do so.

About Us

Electric Motorsport .com specializes in the sales and service of Personal Electric Vehicles as well supplying Electric Vehicle parts for EV Builders, Hobbyists, Educational institutions and Original Equipment Manufactures (OEM). These Electric Vehicle parts are used in electric motorcycles, cars, trucks, motor bikes, scooters, ATV's (quads), trikes, electrathon racers, bicycles, boats, plains, trains, robotics, as well as the film and television industry.

Electric Motorsport .com's Electric Vehicles us NO gas, and have NO exhaust, which means NO emissions. That's right, NO smoke, NO fumes, and NO pollution. These vehicles are also quite which means NO noise pollution. Another advantage of pure electric vehicles is that they have much lower maintenance. There are No Oil changes, NO filters to change and NO carburetor to clean. It is also a lot easier to start and run these pure Electric Vehicles. There are NO starters to kick or engage and there is NO warm up required, just turn the key on and they are ready to ride.

40hp Electric Drive System 72-80v 350a For Marine Or Ev:

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