Sleipner eVision Stabilizers SPS60E to SPS120E — Installation Manual

Actuator & Fin Dimensions

IP rating IP67. Free space for motor replacement: 165 mm (SPS60E), 200 mm (SPS70E), 250 mm (SPS80E, SPS90E), 400 mm (SPS100E, SPS110E, SPS120E); base plate tooling clearance 50 mm (SPS60E–SPS90E) or 100 mm (SPS100E–SPS120E). Plan cooling for the motor: the ambient temperature is 55°C and the system reduces power before the motor overheats.

SCU-12 (2-fin): 170 × 271 × 60 mm; SCU-14 (4-fin): 170 × 289 × 96 mm. eFD electric fin drive: 479 × 278 × 311 mm, mounting holes 239 × 463 mm, Ø6, IP54; weight 13.5 to 23.3 kg depending on version.

Fin Positioning & Hull Structural Forces

• Fins must not extend outside the beam (including fenders) or below the keel/propeller in neutral, must stay submerged in normal roll, and should be as far outboard as possible and not in line with the propellers.
• Close to the LCG (usually a little aft of 50% of waterline length); high-speed boats within the middle 1/4 of waterline length at speed and not ahead of the LCG; under 15 knots within the middle 1/4 of waterline length.
• Keep at least 22 degrees of outboard stroke. Mechanical range 360°; operational range <90° outward and <45° inward, limitable to a segment.
• Values are normalised: dimension with a safety factor for wave impacts; hull reinforcement per a naval architect; isolate actuator noise near living areas.

h = hull distance to impact; f = break-away impact force. Values are to be considered individually.

Hull Cut-Out & Actuator Installation

Versions with hull plate

Hull plate bolts, two stages in the numbered diagonal order: 30Nm then 160Nm (SPS60E, SPS70E) or 250Nm (SPS80, SPS100E, SPS120E). Lifting eye threads Ø 12mm (SPS60E–SPS80E) or 16mm (SPS90E–SPS120E).

Versions without hull plate (SPS90E, SPS110E, SPS120E)

All bolts secured with a thread locker defined by a naval architect and compatible with A4 stainless steel fasteners.

• Steps 9-17 must be completed within the sealant cure time. Lower the actuator with lifting slings and mechanical support; at least one oil drainage hole at the lowest point; condensation drain holes free of sealant.
• Centre the shaft core with the 4 injection ports clear over the chamfer; seal and bolt; EPDM cord 25mm past the red polyurethane ring, then polyurethane sealant in the lower void (none between the ring and the external seal plate).
• When cured, inject filler compound (Chock Fast Orange PR610TCF, Steel Blue, Epocast 36 or Locktite PC7202) from the lowest port until it flows out of the top one (500mm upper hose for flow-back), then plug. Remove leftover compound from the boat (exothermic fire risk).
• Antifoul the actuator with the hull, but mask the openings into the actuator and the fin installation surface.

eFD & Electrical Installation

• Each eFD on its own supply cable with a dedicated fuse. Mount near the actuator (supplied 2.5 / 4.5 meter encoder and power cables), cables down, four screws max. 6mm diameter / 12mm head; clearance 20mm sides, 50mm top, 200mm below and 290mm for the swing door. High voltage: authorized personnel only.
• Mate the connectors by hand with low force, grooves aligned (power cable orange, encoder black). Set the S2 switch inside each eFD: 1 = starboard, 2 = port, 3 = rear starboard, 4 = rear port.
• Ground each actuator to the main bonding/anode system at both points.
• SCU: non-vibrating bulkhead perpendicular to the keel, as central as possible, connectors down, 200mm cable clearance; 24V DC with a 15A fuse on X1 (dedicated switch recommended), S-Link spur on X2, starboard on X5, port on X6. SCU cables 151370-040 to 151370-300 (4m to 30m).
• GPS speed data through the GW-1 gateway (NMEA 0183 or NMEA 2000). Reverse detection: NMEA 2000 PGN127493 (SCU-KIT-2F-NMEA), Twin Disk or ZF pressure switches in series on X3 (SCU-KIT-2F-TD / -ZF), or reversing solenoid interface (SCU-KIT-2F-SO).

Keel Alignment, Fin Fitting & Set-Up

• Keel alignment once, on shore, before the fins go on (repeat only after an encoder replacement): straightedge on the alignment tool, then in the panel (PIN 1234 standard) Setup → Fin installation → actuator and fin type → Start motor self tuning → adjust parallel to the keel → Confirm keel center. Keep clear: the tool may rotate.
• Fin: align tongue and groove, locking washer on each of the 10 bolts, lubricant on the upper bolt threads only, torque in the numbered order in two stages. Shaft covers are handed; threadlock (e.g. Loctite 243) on the setscrews.
• Zero inclination with the boat level (or manual offset: heel to port positive, starboard negative), then dynamic centering at sea in flat water at five increasing speeds including below and above planing.
• Set Backing detection and SCU mount direction under Settings → Handling; fit the fin location labels.