Bengtson Company Hanriot HD-1 User manual

HanriotHD‐138”
Copyright©2005‐11M.K.BengtsonAllRightsReservedRev07/11
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HanriotHD‐1
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R/CScaleModelInstructions
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CONTACTINFORMATION
TheHanriotHD‐1wasdesignedby
M.K.Bengtson
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ManufacturedandDistributedby:
BengtsonCompany
e‐mail:[email protected]
WebSite:www.aerodromerc.com

HanriotHD‐138”Page1
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Copyright©2005‐11M.K.BengtsonAllRightsReservedRev07/11
HanroitHD‐1
ThankyouforpurchasingtheHanriotHD‐1modelfor
electricflight.
ModelBuiltByM.K.Bengtson
THEMODEL
AsemiscaleadaptationoftheHanroitHD‐1,thismodelis
designedtobeeasytobuildandexcitingtofly.
POWERSETUP
Themodelcanbesetuptobepoweredbythe6vSpeed
400withthe2.33:1Mini‐Olympusgearboxanda10x4.7
APCprop.Batterypowerpackis8,600maHNicadsoran
equivalentweightNimh
R/CGEAR
Afourfunctionminireceiverandfourmicroservosareall
thatarerequired.
SPECIFICATIONS
Morethan170lasercutparts
Scale:  ~1/9
Channels: R/E/A/T
WingArea: 336sqin
Wingspan: 38ʺ
Weight: 24.5ozreadytofly
PowerSystem:AXI2808brushlessoutrunnerR/E/Awith
in‐wingservos
Prop:  10x6
Wheels: Balsa&plywood,Neoprenefoamtires
AirfoilType: ScaleTop,Flatbottomed
Cowl:  Builtupbalsaandplywood
Spinner: N/A
Covering: BalsaandLitespanorPolyspan
Decals: Availableonthewebsite
Designer:M.K.Bengtson
PrototypeBy:M.K.Bengtson
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BUILDINGTHEMODEL
BEFORESTARTING
Anoteaboutthephotos:Thephotosweretakenofa
prototypeandthepartsinthekitsuppliedmaylook
slightlydifferentfromthem.However,theconcepts
illustratedarethesame.
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COWLING
ThecowlingisofbuiltupconstructionusingC1andC2.
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CowlConstructionDetail
AssembletheCowling
Constructfrontcowlringbygluing2C1’smakingsure
thattheyareoverlappingcompletely.Toreduceweight,
theinnerC1maybeshavedorsandeddownafter
lamination.Maintaintheinsideofthepartforproper
construction.Glue2C2’sinthreepairsandlaminate
together.
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CowlConstructionDetail
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Thecowlshouldnowbesealed,sandedandprimeduntil
nowoodgrainisleftshowing.Baby(Talcum)powderin
cleardopemakesanexcellentbalsasealer.Talcum
powdermixedinwhitegluemakesexcellentfillerfor
gapsorgouges.Sanddownafteritdries.
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WINGS
WingConstruction
Pindown,overtheplan,thet/e,sparsandwingtip,
gluingasrequired.Addtheleadingedgestockafterthe
basicframeisdoneasthestockisinsertedinarotated
fashion.Addthewingtipsandalignthefronttipalong
thecenteroftheleadingedge.Sandtheleadingedge
stocktoberoundedandmeettheribs.
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WingConstructionDetailonMagneticBuildingBoard
LeaninginthecenterribsusingtheRAG:
TheLowerwings:
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WingConstructionDetail
Ailerons:
WingConstructionDetail
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WingConstructionDetail
Dihedral:
WingConstructionDetail
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FUSELAGECONSTRUCTION
Thefuselageisbuiltastwoseparateboxstructures,the
frontsheetareaandtherearbuiltupsection,whichare
thenjoinedovertheplan.Thissystemnotonlykeeps
eachstagesimple,butitalsohelpstoensureastraight
fuselage.
BuildingoftheRightSideoftheFuselage
Beginbybuildingtworearfuselageframesovertheplan
andallowtodry.Selecthardbalsaorbasswoodforthe
longerons.
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FuselageConstructionDetail
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Jointhetwoframesovertheplanwithcrossbracesand
thetailskidmount.Check,checkandcheckagainthatthis
andALLotherstructuresremainperfectlystraightand
square.
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FUSILAGECONSTRUCTION
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FuselageConstructionDetail
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FuselageConstructionDetail

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FrontSidePanels
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FrontSidePanelConstructionDetail
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ConstructionDetail
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ConstructionDetail
AddingTheUndercarriagePlates
UndercarriagePlates
Removefromtheboardandaddtheplywoodformers
crosspiecesthatserveasu/cplates.
AddingtheDecking
Addallthedeckingandformers,andcarefullytrimto
sizeandfit1/16”sheeting.Smallpiecesof1/8”balsaare
addednexttothecabanestrutsbeforecovering.
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DeckingConstructionDetail
TAILSURFACES
Layoutandgluepartsofthetailsurfacesontheplans.
Jointheelevatorswiththe1/8”doweljoinerthatis
insertedintothecarbontubebearing.Sandthetailparts,
roundingoffalledges.Don’taddthehornsorhingethe
surfacesuntilaftercoveringiscomplete.
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TailSurfaceConstructionDetail

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TailSurfaceConstructionDetail
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TailSurfaceConstructionDetail
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Assembly
Sandanddryfittomaketheinterplanestruts.Besureto
mirrortheopposingstrutsforproperwinginstallation.
COVERING
Anylightweightcoveringmaterialcanbeused.Polyspan
makesagoodchoiceLitespanisalsopopular.
ThisprototypewascoveredinPolyspanandpaintedwith
Krylonspraypaint.Decalswereinkjetprintedonself‐
adhesivevinyllabelstock.
Downloadabledecaloutlinesarebeingdeveloped.Check
on‐lineathttp://www.aerodromerc.com/decals.htmtosee
ifoneisavailableforthismodel.
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FinishedModel
WHEELS
Gluingtheplysidesonthe¼“balsacoremakesthebasis
forthewheels.Usethebrasshubforalignment.Epoxy
thehubsinplaceandaddasufficientamountofepoxy
aroundthebaseofthehubtoreinforcetheconnectionof
thehubtotheply.Plywoodreinforcinghubsare
providedthataretoslipoverthebrasstubingasshown.
Alternatively,gluinganadditional½”squarepieceof
scrap1/8”balsawithaholedrilledinthecentercanbe
substituted.Next,CAgluetheneoprenecordingtogether
tofroma“tire”.UsethinCAsparinglyastheCAbonds
veryaggressivelytotherubber.PresstheCAwettedends
togetherforaninstantbond.Thebestwaytoalignthe
endsistogluethemwhiletheyareinplaceonthewheel.
ThenattachthetirestothewheelsandCAinplace.A
thinbeadofCAaroundtherimmakesforasecuretire.
Paperconesarecutout.Useaballpointpentoscoreeach
lineonthebacktomakeanimpressionof“spokes”.Itis
helpfultodothisoperationonapapertabletsothatthe
penmakesagoodcrease.Foldthepaperalongthecrease
linestoexaggeratetheraisedlines.Oneofthesections
formingawedgeiscutout.Makecutstothecenterofthe
circlealongapairofthespokes.Closethepapercut‐out
toformaconeandtapethejointinsidethecone.
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WheelConstructionDetail
Theinsideconesmaynowbeattachedtothewheels.The
outsideconesmaybeattachedatthispointifwheel
collarsaretobeused.Alternatively,afterinstallingthe
wheelsonthelandinggear,awashermaybesolderedto

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holdthewheelinplaceandthentheconeisattached.
Thismethodmakesaverynicescaleappearance.
INSTALLINGTHERADIOCONTROLGEAR
ServoBay
ItisaswelltogetthebulkofyourR/Cgearfittedatthis
stage,andalsothemotor.Mountallgearasfarforward
aspossibletoavoidC/Gbalanceproblemslater.
BatteryTray
Afteralltheabovehasbeenplaced,mountthebattery
trayandusethebatterypositiontobalancethemodelas
shown.
ASSEMBLY
Wing
Thelowerwingsareaddedandthelocatingdowelsare
insertedintothefuselage.Applyepoxytothewingrib
thatmeetsthefuselage.Attachthewingstothefuselage.
Usethelocatingdowelstoassistwithaligningthewing
panels.Useaflatsurfaceandsandbagstoholdfuselage
andlowerwingsinproperrelationship.Lowerwings
shouldnothaveanydihedralandbelevelwiththe
bottomofthefuselage.Allowepoxytoset.Dryfitthetop
wingandmakeproperalignmentusingtheinterplane
struts.AddepoxyinthesocketsforthecabaneandIP
struts.Thenattachthetopwingusingthecabanestrutsas
aguide.Holdintopwingplacesecurelybutdonʹtover
doitasyoumightinadvertentlyputinawarp.
FittingTailSurfaces
Attachtheruddertotheverticalstabilizerusing1/8”
stripsofCAhinges.Similarly,attachtheelevatortothe
horizontalstabilizer.Gluethehorizontalstab/elevator
assemblyontothefuselage.Atthispoint,sliptheelevator
controlhornontothewirepushrodendand,withthe
servoandtheelevatorcentered,gluethehornintothe
slot.Thengluetheverticalstabilizerandrudderassembly
intotheslotinthehorizontalstabilizer.Inasimilar
fashionastheelevator,sliptheruddercontrolhornonto
thewirepushrodendand,withtheservoandtherudder
centered,gluetheruddercontrolhornintotheslot.
AileronServos
Aileronservosaremountedinwingandattachedwith
shortthreadedrodstotheailerons.Usea“Y”wiring
harnessconnectortowiretheservostoasingleradio
connection.Ifdifferentialaileronthrowsaredesired,
rotatetheservohornforwardabout20degrees,while
maintainingtheneutralpositionoftheaileron.This
shouldcounteranyadverseaileronyaw.
 
TopWingAileronServoInstallationDetail.
LandingGear
ThelandinggearisfashionedfromCAhardened1/8”
plywood.Sand,soakwiththinCAandthen,securely,
epoxythegeartothemodel.0.045”musicwirecanbe
usedtoreinforcethegearbutarenotabsolutelynecessary.
Ifapplied,useKevlarthreadorstrongcarpetthreadand
securethewirealongthegear.CAinplace.Ashock
absorbingmechanismhasbeendesignedtoletthemodel
havealittlegivewhenlanding.Attachthe1/16”music
wireaxletotheundersideoftheLGcrossmemberwith
Kevlarthreadandepoxyinplace.Smallholesareplaced
inthisparttofacilitatethelacingofthisthread.Add
shortpiecesof3/32”brasstubingasbearings/spacersfor
thewheels.Userubberbandstoactasshockabsorbers
butmakeeachsideexactlyastheoppositesite.
Otherwise,theshockresistanceisunequalandyour
modelwillcanttoonesideoneverylanding.Adding
Kevlarcrossriggingwilldramaticallystrengthenthe
landinggear.

LandingGearDetail

HanriotHD‐138”Page6

Copyright©2005‐11M.K.BengtsonAllRightsReservedRev07/11
Rigging
UsestrongthreadorKevlarfishinglinetoforrigging
wires.Elasticbeadingcordalsomakesexcellentrigging
andalwaysstaystaut.Usesmallscrews,fishinghook
eyes,straightpinheadsorsmalleyeletstoattachthe
rigging.Alternately,brasswire(normallyusedfor
picturehanging)canbemadeintoeyeletsandCAʹedinto
themodel.Whilenottechnicallyrequired,riggingcanadd
adegreeofstrengthtoyourmodel
BalancingtheModel
Balancethemodelatthepointshown.Itisbestto
positionthebatterytodothisoperation.
MotorandGearboxTips
TheMini‐Olympusgearboxisverydurableandreliable
butitdoeshaveafewweakpoints.
1)Thereisoftenflashingonthegearsmakingrough
spotsorbindingwhichrobspower.Takeasharp
Exactoknifeandremovethisuntilyourgearbox
turnssmoothly.
2)Excessflashingalsooccurswherethemotoris
mountedthatmakesalignmentpoorandagain
robspower.TaketheExactoandcarveawaythis
excessuntilthemotorfitseasily.
3)Loosesetscrewsonthemainshaftandmotorlet
powerslipaway.Tightenallthesesetscrews
carefully.TOOMUCHwilldistortthepiniongear
andmakesanotherbinding.CAthepiniononthe
motorshaftifnecessary.Recheckthisafteranose
overwithpoweron.
FLYING
ThemodelshouldROGonpavementorhardsurfaces.
Ongrass,themodelmayrequirehandlaunching.Be
carefulthatyourhandorfingersdonotcatchonthelower
rigging.Launchfirmlyandlevel.Whilethetailsurfaces
aresmall,theyshouldnotneedexcessivethrows.Letthe
modelgainaltitudeslowlyofftherunway.Applyingtoo
muchupelevatoratslowspeedsasksforastall.Make
yourturnsgentlyastightturnsrisktipstallinginany
model.Don’texpecttheelevatortomakethemodel
climb.Thinkoftheelevatorasadevicetochangethe
attitudeofthemodel.Thewingandairspeedultimately
makethemodelclimb.Oftendownelevatorappliedat
stallingcanavoidamajorcrash.Themostimportant
detailsforproperflightoperationsare:
1)CGlocation.Tail‐heavymodelsneverflywellorat
all.
2)Downandrightthrust
3)Straightandnon‐warpedwings.
4)Besureyouassembleandlubethegearboxsothatit
isnotbinding.Abindinggearboxwillrobmostof
yourbatteriespower.

CONTACTINFORMATION
Distributedby:
BengtsonCompany
e‐mail:[email protected]
WebSite:www.aerodromerc.com