SMF SYSTEM COMPONENTS

SMF SYSTEM COMPONENTS

To make sail handling easier for a small crew we have synchronized an electric motor in the mast with a newly developed electric winch for the outhaul, E40i. Push a button and the sail comes out in a controlled fashion as the winch adjusts the outhaul tension in relation to the motor in the mast.  

IN-MAST FURLING MOTOR

IN-MAST FURLING MOTOR

Converting a manually operated furling mast is quite easy. Basically, the vertical shaft is replaced for a longer version which is connected to the motor. A clutch allows the motor to be disconnected for manual operation, if ever needed. The motor is completely integrated in the mast and connected to Seldén Power Supply and SEL-Bus system.
 
The motor can be retro fitted to Seldén furling masts type RB (~36-43’ yachts).

PUSH BUTTONS

PUSH BUTTONS

Push the ”OUT” button and the sail will start to unfurl. The E40i winch will tension up the outhaul while the mast motor feeds out the sail. The speed is doubled when the ”IN” button is pushed in addition to ”OUT”. To reef, just release the outhaul from the winch and push ”IN”.

E40i ELECTRIC WINCH

E40i ELECTRIC WINCH

The E40i winch is built up around an electric motor which is totally integrated in the drum. Only three thin cables are protruding to lead through the coach roof or the deck, no large cutouts and no external motor or gearbox. This makes for uncompromised headroom down below which is normally not the case with electric winches. The three speed operation provides a high speed gear, a moderate gear and a low speed gear for fine tuning. It is a two finger operation to start the winch and to switch gear, so a single-handed sailor can helm while adjusting the trim.

HOW IT’S CONNECTED

HOW IT’S CONNECTED

Power supply & SEL-Bus system
The Seldén Power Supply System converts 12V or 24V to 42V which allows for smaller motors and thinner cables.

Each electric function has a dedicated motor control unit and as they are connected through a Can Bus system, named ”SEL-Bus”, they communicate for smooth operation of the sail without overloads.

When not in use, the system will switch into sleep mode to save power.

”- It’s convenient for everyone onboard when there is a simple way to trim the sails. We are experiencing more controlled and smoother maneuvers and the mainsail can be furled in and out without fluttering.

We are no more hesitating whether to adjust the sailarea, we just do it. And we sail more than before.”

Anders Lagerberg, Najad 400
Testpilot 2018-2019 with 4000 M experience of SMF