Our Sailboat Kit will convert your 3-12 HP diesel engine to clean, silent electric!

We've supplied these systems for sailboats up to 30 ft. long, and 12,000lb displacement, that are achieving hull speed. All systems have reverse on-the-fly and contactor disable.

Brushless means no brushes to wear out, and no ingition source for on-board gas appliances.

Kit Includes:

-Mars Brushless Motor
-Controller, Mars 140A, or programmable Sevcon 250Amp w/ regen
-Throttle, PB-6 pot box, (converts mechanical cable to electrical signal)
-Fwd/Rev toggle switch
-Key Switch
-Contactor (battery disconnect, operated by controller)
-Fuse w/ holder
-Complete wire harness and instructions.

For 36-48 volt systems, 50 rpm/Volt @ loaded speed.

Choice of Controller,

$1150, with 140 amp Mars controller, (4 kw) no regen. Buy

$1450, with 250 amp Sevcon PMAC, regen controller.(8.5kw) Buy

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 2:1, but will depend on the required prop RPM needed to reach hull speed. Proper reduction will enable the motor to spin your prop at the hull speed RPM of your prop when it is spinning at its max RPM. This number can be estimated using the 50 rpm/volt constant (48 volts * 50 rpm/volt ~ 2400 rpm max).

We can also make larger systems. Contact us to discuss what you need. Those of you that are still in the "research phase" of your conversion should visit the electric boats discussion group and talk to others who are doing or have already done electric conversions.

Millipak PMAC Controller Wiring.doc

Mechanical Drawing and Wiring Diagram Mars system

Sevcon Manual