GIMBAL AXISMUST BE ORIENTED ATHWARTSHIP AND HORIZONTAL

FORWARD

ALUMINUM SADDLE BEAMSTO BE BONDED TO BUILDER PROVIDED GRP LONGITUDINAL BEAMSSEE SHEET 2 FOR GYRO SADDLE BEAMDIMENSIONAL TOLERANCES.

SEE SHEET 5 FOR GYRO LOADS FOR HULLFOUNDATION DESIGN.

SEE NOTE 8 FOR SAFETY / SOUND ENCLOSURE

STRUCTURAL SUPPORT SHALL BE PARALLEL TO VESSEL WATERLINE

NOTES:

1) SEE SEAKEEPER MODEL 7000 GYRO SPECIFICATION FOR TECHNICAL DETAILS.

2) MOTOR DRIVE AND CONTROL JUNCTION BOXES AND ASSOCIATED CABLES NOT SHOWN FOR CLARITY.

3) GYRO WILL BE SHIPPED WITH A TEMPORARY FORWARD BRACE THAT WILL MAINTAIN REQUIRED ALIGNMENT OF FOUNDATION UNTIL IT HAS BEEN BONDED TO VESSEL STRUCTURE. ONCE THE FOUNDATION ADHESIVE HAS CURED, THE FORWARD BRACE CAN BE REMOVED AND DISCARDED.

4) SEE REFERENCES 1 THROUGH 8 FOR RELATED ELECTRICAL / ELECTRONICS AND COOLING CIRCUIT DRAWINGS.

5) GYRO ASSEMBLY WEIGHT = 430 kg (948 lbs.)

6) RAW WATER COOLING REQUIREMENT IS 8 LITRES/MIN. CONTINUOUS FLOW. PROVIDED CONNECTIONS ARE 1/2" HOSE BARB. USE OF RAW WATER STRAINER IS REQUIRED. 7) TWO LIFTING EYES ARE POVIDED ON THE TOP OF THE GYRO FOR USE WITH A CHAIN/SPREADER BAR (SEE SHEET 3). THE OFFSET CENTER OF GRAVITY LOCATION WILL REQUIRE A STABILIZING LINE BE ATTACHED BETWEEN THE SPREADER BAR AND THE TOP CYLINDER TRUNNION TO LEVEL THE GYRO.

8) IT IS RECOMMENDED THAT A SAFETY ENCLOSURE BE INSTALLED AROUND GYRO ASSEMBLY TO PREVENT PERSONNEL OR EQUIPMENT ENTANGLEMENT WHILE GYRO IS IN OPERATION. IF THE ENCLOSURE WILL ALSO SERVE TO DAMPEN SOUND BEING EMITTED FROM GYRO, A CIRCULATION/ EXCHANGE FAN IS RECOMMENDED TO MAINTAIN AIR INSIDE SOUND ENCLOSURE AT SAME TEMPERATURE AS COMPARTMENT IN WHICH GYRO IS INSTALLED.

REVISIONS

REV. ZONE DESCRIPTION DATE APPROVED

2UPDATED VIEWS TO REFLECT CURRENT CONFIG.1.

ADDED NOTE 8.2.17JULY08 BHS

JDA

3

1. SHT 2 - ADDED TOOL CLEARANCE NOTES AND DIMENSIONS FOR CYLINDER REMOVAL FROM ROD-END AND AFT PORT HOSE REMOVAL FROM CYLINDERS.2. SHT 4 - UPDATED CLEARANCE DIMENSION FOR MOTOR POWER CABLE WHEN PRECESSED +60 .

01DEC08 BHSJDA

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MODEL 7000 GYROINSTALLATION DETAILS

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TITLE:

PROPRIETARY AND CONFIDENTIAL

THE INFORMATION CONTAINED IN THISDRAWING IS THE SOLE PROPERTY OFSEAKEEPER, INC. ANY REPRODUCTIONIN PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF SEAKEEPER, INC.IS PROHIBITED.

A

DO NOT SCALE DRAWING

14JAN08BHS

NAME DATE

COMMENTS:

QLTY APPR.

CHECKED

DRAWNTHIRD ANGLE PROJECTION

P.O. BOX 999SOLOMONS, MARYLAND 20688, USAPHONE: (410) 326-1590 FAX: (410) 326-1199

DIMENSIONS ARE IN MILLIMETERSTOLERANCES:-TWO PLACE DECIMAL -THREE PLACE DECIMAL -ALL DIAMETERS RUNOUT TO DATUM SURFACES -ALL FACES PERPENDICULAR TO DATUM SURFACES -ALL EDGE BREAKS -ALL FILLET RADII

-SURFACE FINISH

03FEB08JDA

03FEB08WED

ENG APPR.

REF DWG NO. TITLE

1 90003 MODEL 7000 GYRO COOLING WATER SCHEMATIC

90005 ONE MODEL 7000 GYRO CABLE BLOCK DIAGRAM2

90011 ONE MODEL 7000 GYRO INTERCONNECT WIRING DIAGRAM3

90007 MODEL 7000 GYRO MOTOR DRIVE J-BOX ENVELOPE & MOUNTING DETAILS4

90006 MODEL 7000 GYRO CONTROL J-BOX ENVELOPE & MOUNTING DETAILS5

90010 MODEL 7000 GYRO NETWORK CONNECTION BOX ENVELOPE & MOUNTING DETAILS6

90008 MODEL 7000 GYRO OPERATOR KEYPAD ENVELOPE & MOUNTING DETAILS7

90009 MODEL 7000 GYRO OPERATOR DISPLAY ENVELOPE & MOUNTING DETAILS8

JDA 03FEB08

74929.50

60TRUNNIONREMOVALDISTANCE

2.36

319ENCLOSURERADIUS PRECESSED0 DEGREESSEE SHEET 4 FOR PRECESSED DIMS.

12.54

R36814.50

705OVERALLHEIGHT

27.75

TOOLCLEARANCE ARCFOR HOSEREPLACEMENT

TOOL CLEARANCE AREAFOR BRAKE CYLINDERSERVICE

REQD. CLEARANCEARC FOR MOTORPOWER CABLE

MOTOR POWERCABLE

OVERALL LENGTH

[33.5]850

27911.00

1997.85

25410.00

923.62

36814.50

672.62

TOP VIEW

GIMBAL AXIS

TOOL CLEARANCEFOR HOSE REPLACEMENT

TOOL CLEARANCEFOR BRAKE CYLINDERSERVICE

FWD BRACEREMOVED AFTERGYRO BONDEDTO STRUCTURE

MOTOR POWERCABLE SWINGAREA DURINGPRECESSION

982OVERALL WIDTH

38.67

786.3785.1

30.9630.91

1355.30

2X 83.583.1

3.293.27

43016.92

50ANGLE SENSOR

REMOVALDISTANCE

1.97

42316.65

27510.83

GIMBAL SHAFTAXIS

REQUIRED CLEARANCEFOR SWING OF MOTOR POWER CABLE

1024.00

1787.00

2X R12.7.50

2X 1024.00

2X R12.7.50

25410.00

923.62

AFT VIEW WITH NOTIONALHULL STRUCTURE

TOOL CLEARANCEFOR BRAKE CYLINDERSERVICE

PORT SIDE VIEW AFT VIEW

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RAW WATER COOLINGINLET/ OUTLET CONNECTIONS1/2 INCH HOSE BARB

BOTTOM VIEW

GYRO WITH TEMPORARY SHIPPING / INSTALLATION BRACE

90235.52

43517.12

40616.00

1305.11

98238.67 23

.91

411.61

APPROX.C.G LOCATION

LIFTING POINTS (2)

FORWARD BRACEREMOVE AFTER GYROINSTALLEDSEE NOTE 4

10.38

1305.11

411.61 12

.47

40616.0

671[26.40]

APPROX.C.G LOCATION

LIFT VERTICALLY VIA SPREADER BAR OR SIMILARARRANGEMENTSEE NOTE 7

LIFT HERE TO LEVELLOAD ONLYSEE NOTE 7

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32912.96

60°

79731.39

GYRO SHOWN PRECESSED TO POSITIVE LIMIT (+60 )

FORWARD EXTENTOF GYROWHEN PRECESSED -60

FLYWHEELSPIN AXIS

60°

642.50

83732.94

36814.50

FORWARD EXTENTOF GYRO / CABLESWHEN PRECESSED +60

FLYWHEELSPIN AXIS

36814.49

SWING AREAOF MOTOR POWERCABLE

32912.96

GYRO SHOWN PRECESSED TONEGATIVE LIMIT (-60 )

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86934.20

46418.27

Fy

N

Fz

FxM

Fz

Fx

The Gyro is mounted in two gimbal bearings each of which is supported by an aluminum saddle beam made of A356-T6 cast aluminum. The saddles are designed to be permanently attached to longitudinal GRP hull beams with a structural adhesive. This mounting arrangement distributes the cyclic, fully reversing forces and moments generated by the Gyro over a large surface area.The unit is not designed to be bolted to the hull structure and this method ofattachment should never be attempted without consultation with Seakeeper.

The Gyro generates pitch moments, roll moments, yaw moments and vertical and horizontal forces - the magnitude of which is controlled by the Gyro’s active brake system. These Gyro generated forces and moments result in loads beingapplied at the saddle beam gimbal bearings and at the brake cylinder attachment points on the port saddle beam..

In order to simplify structural analysis of the hull foundation that supports thesaddle beams, these latter forces and moments have been resolved into resultant forces and moments at a single point. Also, for simplicity, they have been reducedto a single force set, from examination of a large number of possible loading combinations. The reference point is the intersection of the gimbal axis and the centerline planeof the port beam. The resultant forces and moments at this point are illustrated onthe adjacent figure and values to be used for foundation design are summarized below:

Pitch Moment (M) = 5.6 kN - M [4100 Ft-Lb] Yaw Moment (N) = 1.2 kN - M [900 Ft-Lb]Vertical Force (Fz) = 23.5kN [5300 Lb]Longitudinal Force(Fx) = 9.5kN [2100 Lb]Lateral Force (Fy) = 4.4 kN [1000 Lb]

These forces and moments should be considered to be:· Acting simultaneously· Fully reversing (i.e., acting in either direction)· Repeated an infinite number of times· Applicable to the starboard beam even though it does not have brake cylinders

The boat builder or the gyro installer is responsible for designing the hull foundation to which the gyro is attached to accommodate the above forces and moments plus a reasonable Factory of Safety. A Factor of Safety of 3.0 (Margin of Safety of 2) is suggested.

The boat builder or gyro installer is also fully responsible for selecting the structural adhesive to secure the aluminum saddle beams to the GRP hull beams. The calculated shear stress in the structural adhesive between the saddles and the hull foundation beams for the above loadsand 100% adhesive contact is 2.3 MPa (337 psi). Seakeeper recommends that the builder orinstaller use a structural adhesive with a minimum shear strength of 13.8 MPa (2000 psi) to givea Factor of Safety of 6 (Margin of Safety of 5). Additionally, it is strongly suggested that thebuilder or installer test the compatibility of his structural adhesive with cast A356 T6 aluminumand his hull materials by doing mechanical property tests.

GYRO LOADS FOR STRUCTURAL DESIGN:

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