Bengtson Company Pfalz E1 EZ BUILD User manual

PfalzE136”EZBUILD
Copyright©2005‐11M.K.BengtsonAllRightsReservedRev07/11
PfalzE136”EZBUILD

R/CScaleModelInstructions
CONTACTINFORMATION
ThePfalzE136”wasdesigned
ByM.K.Bengtson


ManufacturedandDistributedby:
BengtsonCompany
e‐mail:[email protected]
WebSite:www.aerodromerc.com



PfalzE136”EZBUILDPage1
Copyright©2005‐11M.K.BengtsonAllRightsReservedRev07/11
PFALZE1MONOPLANE36”
EZBUILD
ThankyouforpurchasingthePfalzE1modelplans
forelectricflight.

THEMODEL
AsemiscaleadaptationofthePfalzE1,thismodel
isdesignedtobeeasytobuildandexcitingtofly.
Aswiththeoriginal,thecontrolsurfacesare
extremelyresponsiveandthrowsmustbesetvery
conservatively.

POWERSETUP
ThemodelcanbesetuptobepoweredbytheAcro
Speed300withthe5:1gearboxanda9x4.7APC
proporaSpeed280withHorst4:1anda9x7prop.
Batterypowerpackscanbe7x350maHNicadsor8
x720or350MahNIMHs

R/CGEAR
Athreeorfourfunctionminireceiverandtwo
microservosareallthatarerequired.

SPECIFICATIONS
Morethan65lasercutparts
Scale:  1/10th
Channel: R/E/T
Wingspan: 36ʺ
WingArea: 230sqin
Weight:15ozreadytofly(8oz.minusbattery,
motor,ESC)
PowerSystem:Speed280‐300withAcroorHorst4:1
gearbox(AlargerESCwillsupplymorecurrentbut
thenmodelmaynotbeabletotakethefullpower
oftheS300anditwillbehardertocontrol.)
Prop:  9x6
Wheels: Balsa&plywood,Neoprenefoamtires
AirfoilType: Flatbottomed
Cowl:  Builtupbalsaandplywood
Spinner:N/A
Decals: Availableonwebsite
Covering: BalsaandLitespanorPolyspan
PrototypeBy: M.K.Bengtson


BUILDINGTHEMODEL
BEFORESTARTING
Anoteaboutthephotos:Thephotosweretakenof
aprototypeandthepartsintheplansuppliedmay
lookslightlydifferentfromthem.However,the
conceptsillustratedarethesame.

COWLING
ThecowlingisofbuiltupconstructionusingC1,
C2and1/32”Plywood.


Builtupcowlconstruction
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outline
ofthepartforproperconstruction..

Wrapthestripof1/32”plyaroundformerC2,
gluingwithcyanoasyouproceed.PutbothC1’s
intothecowl.Glueitinsidethecowl.Onceallthe
glueisdry,trimandsandthefrontcowltoshape
andsandthecowloverall.
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withwhite
gluemakesexcellentfillerforgapsorgouges.Sand
downafteritdries.
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Copyright©2005‐11M.K.BengtsonAllRightsReservedRev07/11
WINGS
WingConstruction
Pindown,overtheplan,thet/e,l/e,sparandwing
tip,gluingasrequired.Gluealltheribsinplace.
Usetheangletemplate(RAG)toleanintheroot
ribsofbothwingpanelstoallowfordihedral.
Don’tforgettoaddthe¼”balsacrosspiecestoused
laterintheriggingwires.Theonesnearestthe
leadingedgesareonboththetopandbottomofthe
wing.Addthewingtipsandalignthefronttip
alongthecentreoftheleadingedge.Sandthe
leadingedgestocktoberoundedandmeettheribs.

FUSELAGECONSTRUCTION
Thefuselageisbuiltasaunitizedboxstructure,
usingpre‐cutsideframeswithpre‐cutnotchesfor
theformers.
BuildingOfTheFuselage
Beginbyconnectingthefuselageframesand
formersoverthetopviewofthefuseontheplan.
AddingTheUndercarriagePlates
Oncedry,removefromtheboardandaddthe1/8”
x1/4”basswoodcrosspiecesthatserveasu/c
plates.

FuselageDetail
AddscrapbalsatocovertheslotsinF6sothatthe
tailskidassemblyrestsproperlyinthefuselage.
Keepthescrapbalsatoaminimum.Extraweightin
thetailcanmakethemodelhardtobalance.
.

FuselageTailskidDetail
AddingtheDecking
Addallthedeckingandformers,andcarefullytrim
tosizeandfitall1/16”sheetdecks.


FuselageDecking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.Usetheedge
ofatabletoassistinaligningthepartsaccurately.


ElevatorDetail

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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Copyright©2005‐11M.K.BengtsonAllRightsReservedRev07/11
COVERING
Anylightweightcoveringmaterialcanbeused.
PolyspanmakesagoodchoiceLitespanisalso
popular.

DecalsareavailabletodownloadonAerodromeRC
website:
http://www.aerodromerc.com/decals.htm

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ballpoint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.
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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,butNOTthe
batterypack.
MountingMotor,RadioLocationAndElectronic
SpeedControl
Themotormountsshouldbeplacedasshownin
theplanforproperrightanddownthrust.Use
smallpiecesofbassorsprucetocapthemand
serveasscrewmounts.
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firsttaskistoepoxythewingsaccuratelyonto
thefuselage.Use5‐minuteepoxyforthistask.
UsingLocatingDowelsAndAligningWingPanels
Applyepoxytothewingribthatmeetsthe
fuselage.Attachthewingstothefuselage.Usethe
locatingdowelsandbothRAG’stoassistwith
aligningthewingpanels.Propupthewingtips
bytheamountoverlevelindicatedontheplan.CA
gluethesparstoasectionof1/8”x3/8”bassthat
spanstheinsideofthefuse.Thisprocedurejoins
thetwowinghalvestogether.Allowepoxytoset.
FittingTailSurfaces
Theelevatorisepoxiedonthefuseasindicatedon
theplan.Therudderishingedona1/16”music
wirepostthatisconnectedtothetailskidassembly.
TakecaretoCAthewireinplaceaftertherudder
andbrasstubingareinplace.Theendofthemusic
wireconnectedtothetailskidshouldbewrapped
withKevlarorNylonthreadandepoxiedinplace.


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
TailSurfacesDetail


TailskidshouldbewrappedwithKevlarorNylonthread
andepoxiedinplace.

AddCowlandsidecheeks

Gluethecowlandmakesidecheeksfromsoftbalsa

MakeSideCheeks
AddingDetailOfControlHornsOnThePushrod
Ends

ControlHornDetail
Slipthecontrolhornsontothewirepushrodends
and,withboththeservosandthecontrolsurfaces
centered,gluethehornsintotheirslots.

Undercarriage
Bindandcyanotheu/clegsinplaceandbindand
solderthemtotheaxle.

UndercarriageDetail


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Copyright©2005‐11M.K.BengtsonAllRightsReservedRev07/11
FittingtheRiggingpostsandguywires.
Theriggingpostsshouldnowbeattachedas
shownontheplan.UsestrongthreadorKevlar
fishinglinetosimulateriggingwires.Usesmall
screws,fishinghookeyes,straightpinheadsor
smalleyeletstoattachthelinestothemounting
crosspiecesplacedinthewingduringassembly.
Whilenottechnicallyrequiredthesewirescanadd
adegreeofstrengthtoyourmodel
FitTheAccessHatch
Fittheaccesshatch,addthebatterypackandyour
modelisfinished.
BalancingTheModel
Balancethemodelatthepointshown.Itisbestto
positionthebatterytodothisoperation.

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.(3/8”of
washoutisOKtoputintothewingtips)
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