Sevcon Brushless Sailboat Kit - 10.5KW

Our Sailboat Kit will convert your 12-29 HP diesel engine to clean, silent electric!

Continuous horsepower rating: 10HP

Peak Horsepower Rating: 28HP

Kit Includes:

-Mars/Motenergy ME 0913 Dual-Stator Brushless  Motor
-Controller: 48V Sevcon Gen-4 450Amp (can be set up to run at 36V), programmable, regen.
-FW-REV Throttle Box with key OR key switch, Fwd/Rev switch and PB-8 throttle OR key switch and ET-134 throttle
-Tyco Contactor
-Fuses
-Every kit is individually bench tested; no need for you to program the controller
-Complete wire harness and instructions

We've supplied these systems for sailboats larger than 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.

A gear reduction is not always necessary, and largely depends on the size, efficiency, prop style, and desired speed of your vessel. However, 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 the motor 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). The Gen-4 controller has a regen feature which can allow for current to be put back into the batteries from the spinning prop while sailing. This is dependent on your sailing speed and prop design, and doesn't work in all situations.

Larger boats may require a higher power AC or brushless motor. In the U.S. and Canada, brushed motors are only legally allowed for marine use if onboard accessories use kerosene or diesel (not propane or gasoline for instance) due to the potential for internal motor arcing. 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.

Gen4 10.5KW Sailboat Kit Wiring Diagram - for TSM Control Box

Gen4 10.5KW Sailboat Kit Wiring Diagram - for Fw/Rev Switch Option

Gen4 Sailboat Kit Installation Instructions

E-Boat Modeling Spreadsheet (.xls) *Use this to calculate your power needs!*

E-Boat Modeling Spreadsheet Manual (.doc)