Seakeeper 26000 GYRO User manual

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Rev2July2013
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INSTALLATIONMANUAL
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MODEL26000GYRO

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INSTALLATION
MANUAL
Product:Document#:Rev:
MODEL26000GYRO901832
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MODEL26000GYRO
INSTALLATIONMANUAL
JULY2013
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Contents:
Section1–MechanicalInstallation&PC‐120Guide
Section2–ElectricalInstallation&PowerConfigurationsfor
SeakeeperGyroStabilizers
Section3–CoolingInstallation
Section4–Startup
Section5–InstallationChecklistandRequiredSupplies
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44425PECANCOURT,SUITE151
CALIFORNIA,MARYLAND,20619,U.S.A
PHONE:410‐326‐1590
FAX:410‐326‐1199
E‐MAIL:[email protected]

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INSTALLATION
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MODEL26000GYRO9018321of23
Section1:MECHANICALINSTALLATION
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1.0Introduction
Thisdocumentisintendedtogivedetailsandguidancetoaboatbuilderorequipmentinstallertoinstallthe
Seakeeper,Inc.Model26000StabilizingGyro.
TherearetwomethodsofinstallingtheModel26000gyro:
1) SaddleInstallation–thisisusedonfiberglassconstructedhulls.
2) Bolt‐InInstallation–thisisusedformetalconstructedhulls.
Itisassumedthattheinstallerisfamiliarwithbondingusinghighstrengthadhesivesorboltingandhas
performedstructuralanalysistoassurethestructuretowhichthegyromountscanproperlytransfertheloads
thegyrocreatesintothemainhullstructure.Iftheinstallerhasanydoubtabouttheabilityofthestructureto
transferthegyroloadstothehullthenheshouldcontactalicensednavalarchitectormarineengineertodoa
structuralanalysis.
Theinstallershouldreviewthefollowinglistofreferencedrawingstoensuretheinstallationprocedureisfully
understood.
ReferenceDrawings
90088Model21000/21000A/26000GyroSaddleInstallationFixtureKit
90089Model21000/21000A/26000GyroBolt‐InInstallationFixtureKit
90155Model26000GyroHardwareScopeofSupply
90137Model26000GyroInstallationDetailsUsingSaddleMethod
90138Model26000GyroInstallationDetailsUsingBolt‐InMethod
90174Model26000GyroCableBlockDiagram,SingleStation
90175Model26000GyroCableBlockDiagram,DualStation
90202Model26000GyroCoolingSchematic
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MODEL26000GYRO9018322of23
Section1:MECHANICALINSTALLATION
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FIGURE1–MODEL26000GYRO
1.1Precautions
Gyroflywheelissupportedbyprecisionbearings.Makecertainwhileunpackingandliftinggyroassembly
toNOTdroporimpartmechanicalshockasdamagetobearingscouldresult.
Whilehandling/installinggyroassembly,protectexposedhydraulicbrakecylinderrods(SeeFigure1
above)fromscratchesordamageasthiscouldleadtoprematuresealfailureandoilleaks.
Whilehandling/installinggyroassembly,donotallowelectricalfittingsthatexitbottomofgyroenclosure
tocomeincontactwithanysurfaceorobjectasthiscoulddamagethefittingsandpotentiallyaffectthe
vacuumintegrityoftheenclosure.
Exercisecaretoprotectgyropaintedfinishasdamagetofinishcouldleadtoearlyappearancedegradation
ofinstalledgyro.
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1.2SelectionofGyroInstallationLocation
Selectionofmountinglocationofgyroshouldconsiderthefollowingdesirablefeatures:
Thegyromustbeinstalledaftofamidshipstominimizehighacceleration
loadingsduetohull/waveimpactsduringoperationathighspeedorinlarge
waves.
Removableoverheadaccessorsufficientclearanceforremoval/re‐installationofgyroforoverhaulin
futureyears.
Clearanceforreplacementofgimbalanglesensorongyroportside(seeFigure2below).
Clearanceforfilling/purgingbrakehydraulicoil(seeFigure2below).
Clearanceforfillingwater/glycolcoolingcircuit(seeFigure2below).
Clearanceforreplacementofbrakehydrauliccylinders(seeFigure2below).
Spaceforrecommendedsound/safetyenclosure.
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FIGURE2–INSTALLEDGYROCLEARANCECONSIDERATIONS

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SafetyEnclosure
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Thereisalargetorqueaboutthegimbalaxiswhenthegyroisprecessing.Therefore,thegyromustbe
housedinanenclosureoracompartmentorinstalledinacagesopersonnelorgearcannotcomeinto
contactwiththegyrowhileitisprecessing.
Thegyroshouldbetreatedwiththesamerespectonegivesahighspeedrotatingpropellershaftor
engineshaft.Thegyromustbeinstalledsocontactisnotpossiblewhiletheflywheelisspinning.
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Noise/Soundproofing/Ventilation
Gyronoisehasbeenmeasuredundersteadystateconditions(nowaveload)inSeakeeper'stestfacility.Thesteady
statenoiseistypicallyintherangeof72‐74dBunweighted.Asthefrequenciesemittingthehighestsound
pressuresarelow(likeothermarinemachinery),itisrecommendedthatthegyrobeinstalledinacageina
machineryspacethatisalreadytreatedwithsoundproofing.
Ifthegyrostabilizerhastobelocatedoutsideamachineryspace,itshouldbeinstalledinasounddamping
enclosuretopreventlowfrequencynoise(approximately133Hz)fromenteringthelivingspaces.Inthiscase,the
enclosurecanbeopenatthebottombetweenthehullstringers.Asmallexhaustfanshouldbeinstalledinthetop
oftheenclosuretopullambientairthrutheenclosuresotheairintheenclosuredoesnotheatup.Thiswillensure
thattheownerdoesnotgetnuisanceshutdownsduetotheMotorDriveandBearingtemperaturealarmsinsome
operatingconditions(highambientairtemperature,highseawatertemperature,highseastate,etc).
Thefanshoulddeliver35cuft/min(60cum/hr)whichshouldexchangetheairintheenclosureaboutonceper
minute.Small,massproduced,axialandcentrifugalcoolingfansareavailablewitheitherACorDCinputpower,
ballbearings,extendedtemperaturerange,lownoiseratings,longMTBF,marinized,etc. Locatetheinletatthe
bottomoftheenclosureandmountthefanatthetopasanexhaustfan.Acentrifugalfanmaybebesttominimize
outletarea.Thefanpowerrequirementswouldtypicallybeintherangeof20watts.WhenusingaDCfan,wireit
tothesamebreakerthatprovidespowertotheGyroControlJunctionBoxsothefanturnsonandoffatthesame
timeasthecontroller.
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MODEL26000GYRO9018325of23
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1.3SelectionofInstallationMethod
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TheModel26000gyrocanbeaffixedtothehullstructureusingtwomethods1)Usesaddleinstallationor2)bolt‐
ininstallation.Seefiguresbelow.
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Option1wouldbemostcommonlyusedonahullconstructedofglassreinforcedplastic(GRP)orfiberglass.For
thisoption,four16inch(406mm)longby8inch((203mm)deepsaddlesarebondedtoproperlyspacedand
preparedstructuralmembersthatareanintegralpartofthehullstructure.Seakeeperrecommendsusinga
structuraladhesivewithalapshearstrengthof2000psi(13.8MPa)orgreater.Carefulconsiderationshouldbe

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exercisedbytheinstallerwhileselectingtheappropriateadhesive.Compatibilitywiththegyro’scastaluminum
A356‐T6saddles,hullstructureandpotlifearethreeimportantfactorstoconsider.
Option2wouldbeappliedonahullorgyrosupportstructureconstructedofsteeloraluminum.Thefourisolation
mountswouldfastendirectlytohullstructureusing32xM16or5/8inchfasteners.Dependingonaccessaround
theboat’sstructureblindthreadedholesorthru‐boltingcanbeutilized.
1.4UnpackingCrate
1) ReferenceSeakeeperDrawingNo.90155,Model26000GyroHardwareScopeofSupplyforitemsthatship
withthegyro.
2) ReferenceSeakeeperDocumentNo.90203,Model26000CrateUnpackingInstructionsforinformationon
disassemblingcrate.
3) Removeanglesusedforinstallationfixtures–takecarenottodamageasanydistortionofanglescould
resultinfoundationalignmentproblems.
4) Removesaddles(ifapplicable)electricalcomponents,cables,andmisc.itemscontainedinboxesandset
aside.
5) Remove16xlagboltsthatfastengyrotocratebase.
6) Attachspreaderbarorsimilardevicetothetwoliftingeyeslocatedonthetopofthegyroenclosure.Any
sideloadingontheliftingeyesbyusingshortstrapsorchainsshouldbeavoided.Seefigure3below.Do
notrestspreaderbarontopofgyrowithoutusingpaddingtoprotectpaint.
7) Gyroisnowreadytobeliftedfromcrate.Takecarewhileliftingnottodamageanycablesorhosesthatare
attachedtotheassembly.Whensuspended,gyroshouldbealmostleveltomakeinstallationeasier.
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FIGURE3–LIFTINGARRANGEMENT
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1.5SaddleInstallation
SeakeeperhasusedPlexusMA590adhesiveforbondingthesaddlestotheGRPhullstructure. PlexusMA590isa
two‐partmethacrylatestructuraladhesivethathascharacteristicsconducivetothistypeofinstallation.Detailsof
thebondingprocedureinthismanualwillinvolvethePlexusMA590productbutthatshouldnotexcludeother
suitableadhesivestheinstallerchoosestouse.SeeSheet6ofSeakeeperdrawingno.90137forloadsinformation
andrecommendedadhesiveproperties.
1.5.1InitialCheckandPreparationofHullStructure
RefertoSeakeeperDrawingNo.90137,Model26000GyroSaddleInstallationDetails.Importantdimensionaland
loadinformationisgiveninthisdrawingthatwillimpactthedesigndetailsofthestructurethatwillreceivethe
gyroaswellasselectionoftheadhesivetobondthegyrointothehull.
Thefoundation“saddles”ofthegyroaredesignedtobebondeddirectlytothecompositehullstructureofthe
vesseltoeffectivelydistributegyroscopicloads.Acompletebondisrequiredbetweentheinsidesurfaceofthe
saddlesandthehullstructure.Seakeeperrecommendshavingaminimumof14cartridges(450mL),1bottlePlexus
PC‐120Primer/Conditioner,and2manualadhesivegunsonhandforinstallation.Twoworkersshouldapplythe
adhesiveatthesametimetofinishtheinstallationbeforetheadhesivestartstocure.Toaidindeterminingthe
quantityofadhesiverequired,theinteriorsurfacearea(bondingsurfaces)ofeachsaddleis287in2(1852cm2)fora
totalbondedsurfaceareaforallfoursaddlesof1148in2(7406cm2).
Thehullstructuresupportingthegyroshouldbeinstalledsothegyroisparalleltothewaterplaneinthe
port/starboardandforward/aftdirections.Inaddition,thefourareasontopofthebeamsthatthesaddleswill
bondtoneedtobeco‐planarwithin1/8thinch(3mm)tominimizepotentialdistortionofgyrosupportframe
wheninstalled.
Notethatanypaintorgel‐coatpresentinbondareashouldberemovedsothatadhesivewillbonddirectlyto
laminatefibersandresin.
Seakeeperprovidesaninstallationfixtureassembly,P/N90088,thatlocatesthesaddlesattheproperspacingboth
inthefore‐aftdirectionandtheport‐starboarddirection.SeeFigures4,5&6below.Onceassembledwiththe
providedsaddlefittings,thefixturecanbeusedtocheckclearancesandalignmentofthehullstructure.Thefixture
willallowthebuilder/installertolay‐upandadjustthefoundationdimensionstocreatealow‐clearancefit
betweenthegyrofoundationsaddlesandthehullstructure.Shearstrengthoftheadhesivewillbemaximizedifthe
curedthicknessbetweenthevesselstructureandgyrosaddlesisatthethinnerendoftheadhesivemanufacturer’s
recommendedrange.Therefore,thefixtureshouldbeusedtoconfirmthattheoveralldimensionsofthe
foundationsaresquareandlevelandthattheadhesivegapiswithinSeakeeper’smaximumrecommended
thicknessof.13”or3mm.
Note: DoNOTusetheinstallationfixturetoestablishgyroenvelopedimensions.RefertoDrawingNo.90137
forenvelopedimensions.A3‐DmodelofthegyroisavailableontheSeakeeperwebsite(www.seakeeper.com)
toaidindesigningthegyrofoundationandthespacearoundthegyro.

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INSTALLATION
MANUAL
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MODEL26000GYRO9018328of23
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FIGURE4–EXPLODEDVIEWOFSADDLEINSTALLATIONFIXTURE

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INSTALLATION
MANUAL
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MODEL26000GYRO9018329of23
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FIGURE5–NOTICEFORCHECKINGSQUAREOFASSEMBLY

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INSTALLATION
MANUAL
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MODEL26000GYRO90183210of23
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FIGURE6–SADDLEINSTALLATIONFIXTUREONNOTIONALHULLSTRUCTURE


INSTALLATION
MANUAL
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MODEL26000GYRO90183211of23
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1.5.2FiberglassHullPreparation
1) Positioninstallationfixture(Fig7)onhullgirdersnotingrecommendedclearancesformaintenancefrom
Figure2.Checkthatthescrewsfasteningthesaddlestotheinstallationfixturearetight(Fig5).
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2) Maskhullarea(asshowninblue,Fig8)aroundfoundationsaddlesforeasyclean‐upandtocreateoutline
ofsurfaceareatoreceiveadhesiveasshowninbrown,Fig7.Insurethatthebondgapiswithinadhesive
manufacturer’srecommendedthickness,or3mmifusingPlexusMA590.
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FIGURE7‐INSTALLINGFIXTUREONHULL
FIGURE8‐MASKINGPERIMETEROFSADDLES


INSTALLATION
MANUAL
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Section1:MECHANICALINSTALLATION
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3) Raisefixtureclearoffoundation.Checkallfourmountingareasareco‐planartowithin1/8”(3mm)to
eachother,aswellasparalleltothewaterlineplane,asshowninFig9.
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
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4) Thoroughlycleanwithalcoholoracetoneallareas(highlightedinbrown,Fig9)ofgirderstobebondedto
removeanycontaminates.Usenewpapertowelsforcleaning,notshoprags.
5) Removeallpaintandgel‐coatfrombondsurfacessothatadhesivewillbonddirectlytolaminatefibersand
resinasshowninFigure7.
6) Thoroughlysandgirderbondsurfaceswith80gritsandpaper.(IMPORTANT–BONDSTRENGTHMAYBE
REDUCEDIFTHISSTEPISSKIPPED.)
7) Wipesurfacescleanfromdustwithalcoholoracetoneusingnewpapertowels,notshoprags.
8) Re‐positioninstallationfixtureongirdersanddouble‐checkthattheadhesivegapiswithintheadhesive
manufacturer’smaximumrecommendedthickness.(Notegapwillbelargerduetoabsenceofgel‐coat.)
Seakeeperrecommendsamaximumgapof3mmifusingPlexusMA590.
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
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FIGURE9–COPLANARPROPERTIESOFFOUNDATION

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INSTALLATION
MANUAL
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Section1:MECHANICALINSTALLATION
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9) Liftinstallationfixtureclearof
foundation.ApplySeakeeper
providedadhesivebackedfoam
stripsattheeightlocationsshown
(eachendoffoursaddles)in
Figure10below.Thesestripsare
toserveasadamtominimize
adhesiveescapingouttheendsof
thesaddlesastheyarepositioned
overthebondarea.
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Noteifbondingsaddlestoanon‐compositehull,contactSeakeeperforhullpreparationinstructions.
FIGURE10–FOAMSTRIPINSTALLATION

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INSTALLATION
MANUAL
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Section1:MECHANICALINSTALLATION
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1.5.3GyroSaddlePreparation
1) Ensurethatscrewsfasteningsaddlestotheinstallationfixturearetight(Fig5).
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2) Checkthateachsaddlecontains4plasticscrewswhichwillinsureanadhesivegapof.080”(2mm)ontop
surfaceofhullasshowninFigure11.


3) Thoroughlycleanwithalcoholoracetonetheinsidesurfaces
ofgyrofoundationsaddlestoremoveanycontaminatesas
showninFigure11.Usenewpapertowelsforcleaning,not
shoprags.




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4) Thoroughlysandallsaddleinsidesurfaceswith80gritsandpaper.(IMPORTANT–BONDSTRENGTHMAY
BEREDUCEDIFTHISSTEPISSKIPPED.)

5) Wipesurfacescleanfromdustwithalcoholoracetoneusingnewpapertowels,notshoprags.

6) IfusingPlexusMA590adhesive,applyPlexusPC‐120surfaceconditionertoinsidesurfacesofgyro
foundationsaddlesinaccordancewithmanufacturerinstructions.Theseinstructionsarelocatedatthe
endofthissection.Ifusinganalternateadhesive,checkwithmanufacturerifanysurfaceconditioner/etch
isrequiredforthealuminumsaddles.
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PlasticScrews
Cleaninside
surfacesof
saddles
FIGURE11‐SADDLECLEANING


INSTALLATION
MANUAL
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Section1:MECHANICALINSTALLATION
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1.5.4BondingSaddlestoHull
Note:IfusingPlexusMA590adhesive,thegyrosaddlesshouldbeinstalledwhenPC‐120isconfirmeddry.

1) AssemblePlexuscartridgeintoeitherthemanualorpneumaticgunasshown.Removecaponcartridgeand
attachmixingtip.Forpneumaticgun,startwithlowairpressureandincreaseuntildesiredflowrateis
achieved.
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2) Cuttipofmixingwandasshowninphoto.
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3) Prepareasecondmixingwandasshowninphotobelowbyattachingthe
simpleflexiblenozzletotheendwithprovidedhoseclamp.Setasidefornowas
thiswillbeusedtoinjectadhesiveintothesidesofeachsaddleafterthefixture/
saddlesareinposition.
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4) Installprovidedrubberplugsinthe
topsixholesofeachsaddle.Theplugswill
limittheadhesivebeingforcedoutofthe
injectionholesinstep6below.
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FIGURE12–ADHESIVEINSTALLATIONSUPPLIES
AdhesiveGun
Mixin
g
Ti
p

MIXINGTIP
FLEXIBLE
NOZZLE
PneumaticGun

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INSTALLATION
MANUAL
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MODEL26000GYRO90183216of23
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5) ApplylargebeadofPlexusadhesive
tothehullstructureasshowninthe
figuretotheright.Apply
approximately1½cartridgesateach
ofthefourlocations.Work
deliberateandfastasittakessome
timetoapplytheadhesivetothe
structure.MA590hasa90minute
workingtimeatroomtemperature
(23°C/73°F).Thisworkingtimecan
reduceto40‐50minutesatelevated
temperatures.Twoworkersshould
applytheadhesiveatthesametime
tofinishtheinstallationbeforethe
adhesivestartstocure.
6) Lowerfixtureandsaddlesoverthe
hullstructureandapplylight
downwardpressuretoeachofthe
foursaddlesuntilthefournylon
screwsrestonthehullstructure(SEE
FIG.6).Theadhesivewillbeforced
towardstheforwardandaftendsof
eachsaddleandpartiallydownthe
sidesofthefoundationbeams.
7) Insertfulladhesivecartridgealong
withmixingwand/nozzleassembled
instep3aboveintogun.
8) Begintoinjectadhesiveintothesix
holesprovidedoneachsideofeachof
thefoursaddles.Followthenumbered
sequenceshownuntiltheadhesive
pushesouttheedgesofthesaddle
perimeter.Theintentistopumpinthe
adhesiveworkingfromthetopdown
andfromthemiddletotheendstofill
thegapsanddisplaceanyair.A
completebondisrequired–excess
adhesivewillbeneededtomakesure
allbondgapsarefilled.
9) Repeatabovestepforremaining7
sidesofthesaddles.
APPLY 1.5
CARTRIDGES OF
PLEXUS IN ONE LARGE
BEAD, 4 PLACES