Bengtson Company Pfalz DIIIa Instructions Manual Download Page 5

Pfalz

 

DIIIa

 

41”

    

Page

  

5

 

 

Copyright©

 

2005

11

     

M.K.

 

Bengtson

  

All

 

Rights

 

Reserved

      

Rev

 

07/11

 

 

Spinner

 

COVERING

 

Any lightweight covering material can be used. 

Polyspan with dope or Minwax Polycrylic makes 
a good choice Litespan is also popular. Brian used 

an iron on plastic covering similar to Solite.  
 

Decal

 

outlines

 

for

 

this

 

model

 

are

 

available

 

on

 

www.aerodromerc.com/decals

 

in

 

Adobe

 

Acrobat

 

pdf

 

format

 

for

 

printing

 

on

 

decal

 

paper.

  

Contact

 

paper

 

used

 

for

 

kitchen

 

shelf

 

lining

 

makes

 

excellent

 

decals.

 

Print

 

out

 

the

 

decal

 

on

 

paper,

 

glue

 

with

 

a

 

glue

 

stick

 

to

 

the

 

paper

 

backing

 

on

 

the

 

shelf

 

paper,

 

cut

 

the

 

decal

 

out

 

with

 

an

 

Exacto

 

knife

 

or

 

micro

 

scissors.

  

Peel

 

off

 

the

 

paper

 

and

 

adhere

 

to

 

your

 

model.

  

Use

 

black

 

material

 

for

 

the

 

crosses

 

and

 

white

 

for

 

the

 

backgrounds.

  

If

 

a

 

lozenge

 

pattern

 

is

 

desired,

 

decals

 

outlines

 

for

 

these

 

are

 

also

 

available.

 

Refer

 

to

 

our

 

June

 

issue

 

of

 

our

 

Webzine

 

for

 

an

 

excellent

 

article

 

on

 

how

 

to

 

make

 

lozenge

 

patters.

  

WHEELS

 

Gluing

 

the

 

ply

 

sides

 

on

 

the

 

3/8”

 

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.

   

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

 

cutout

 

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

 

Get

 

the

 

bulk

 

of

 

your

 

R/C

 

gear

 

fitted

 

at

 

this

 

stage,

 

and

 

also

 

the

 

motor.

  

Aileron

 

Servos

 

Aileron

 

servos

 

are

 

mounted

 

in

 

wing

 

and

 

attached

 

with

 

short

 

threaded

 

rods

 

to

 

the

 

ailerons.

 

Note:

 

Use

 

a

 

“Y”

 

wiring

 

harness

 

connector

 

to

 

wire

 

the

 

servos

 

to

 

a

 

single

 

radio

 

connection.

  

Battery

 

Tray

 

After

 

all

 

the

 

above

 

has

 

been

 

placed,

 

mount

 

the

 

battery

 

tray

 

made

 

from

 

1/8”

 

balsa

 

and

 

use

 

the

 

battery

 

position

 

to

 

balance

 

the

 

model

 

as

 

shown

 

on

 

the

 

plan.

  

Summary of Contents for Pfalz DIIIa

Page 1: ...eserved Rev 07 11 Pfalz DIIIa 41 R C Scale Model Instructions CONTACT INFORMATION The Pfalz DIIIa was designed by M K Bengtson Prototype by Brian Allen Manufactured and Distributed by Bengtson Company...

Page 2: ...ls Available on website BUILDING THE MODEL Before Starting A note about the photos The photos were taken of a prototype and the parts supplied may look slightly different from them However the concept...

Page 3: ...mers F12 are placed on both sides of the keel to form a slot for the horizontal stabilizer so take care in gluing these in place or the horizontal stabilizer will be misaligned Attach F0 to serve as a...

Page 4: ...ator servos Dummy Spandau machine gun parts are included in the kit They are assembled as shown on the plan and a printed card stock barrel is wrapped around the round balsa disks forming the cooling...

Page 5: ...s 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...

Page 6: ...shown on the plan 3 32 brass tubing serves as wheel hub and axle spacers Use rubber bands at the ends where the wheels attach to provide the shock resistance for the freely moving axle and wheel Sand...

Page 7: ...1 CG location Tail heavy models never fly well or at all 2 Down and right thrust 3 Straight and non warped wings Here are some excerpts of Brian s maiden flight report We got to the field and while t...

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