background image

BE2c

 

36

 

7/8”

    

Page

 

 

6

 
 

 

Copyright©

 

2007

11

    

M.K.

 

Bengtson

  

All

 

Rights

 

Reserved

   

Rev

 

07/11

 

score/crack

 

lines,

 

ensure

 

everything

 

conforms

 

to

 

the

 

plan

 

and

 

allow

 

to

 

set.

 

 

Fuse

 

cracked

 

for

 

F7

 

To

 

help

 

avoid

 

hanger

 

rash

 

later

 

on

 

a

 

few

 

other

 

tasks

 

can

 

be

 

completed

 

at

 

this

 

stage.

 

Epoxy

 

the

 

two

 

1/8”

 

brass

 

bearings

 

(cut

 

from

 

1/8”

 

brass

 

tube)

 

into

 

their

 

holes

 

in

 

the

 

fuse

 

sides

 

just

 

forward

 

of

 

F6.

 

Use

 

a

 

length

 

on

 

3/32”

 

rod

 

or

 

tube

 

through

 

both

 

bearings

 

to

 

keep

 

them

 

aligned

 

as

 

the

 

epoxy

 

sets.

 

The

 

bearings

 

should

 

be

 

flush

 

to

 

the

 

outside

 

and

 

can

 

each

 

be

 

3/8”

 

long

 

so

 

as

 

to

 

give

 

¼”

 

on

 

the

 

inside

 

for

 

glue

 

attachment.

 

Ensure

 

your

 

‘alignment

 

rod’

 

through

 

the

 

bearings

 

does

 

not

 

get

 

glued

 

in

 

place!

 

Sheet

 

the

 

underside

 

front

 

of

 

the

 

fuselage

 

with

 

1/32”

 

balsa.

 

Use

 

card

 

to

 

make

 

a

 

pattern

 

of

 

the

 

shape

 

required,

 

trimming

 

until

 

it’s

 

a

 

perfect

 

fit

 

apart

 

from

 

the

 

front,

 

which

 

can

 

be

 

left

 

over

length

 

and

 

trimmed

 

later.

 

Cut

 

a

 

piece

 

of

 

1/32”

 

balsa

 

sheet

 

to

 

this

 

pattern

 

and

 

soak

 

under

 

a

 

water

 

soaked

 

paper

 

towel

 

for

 

20

30

 

min.

 

That

 

should

 

make

 

it

 

flexible

 

enough

 

to

 

take

 

the

 

curved

 

shape.

 

Glue

 

and

 

tape

 

the

 

sheet

 

in

 

position.

 

(Tip:

 

If

 

you

 

are

 

not

 

experienced

 

in

 

sheeting

 

curves

 

with

 

balsa,

 

this

 

is

 

a

 

fairly

 

simple

 

curve

 

to

 

start

 

with.

 

Use

 

card

 

to

 

create

 

a

 

pattern,

 

you’ll

 

find,

 

balsa

 

bends

 

away

 

from

 

the

 

wet

 

side,

 

balsa

 

expands

 

as

 

it

 

soaks

 

and

 

shrinks

 

back

 

as

 

it

 

dries.

  

Be

 

prepared

 

to

 

have

 

more

 

than

 

one

 

‘go’

 

at

 

your

 

first

 

sheeting

 

attempts,

 

if

 

it’s

 

wrong,

 

or

 

the

 

balsa

 

cracks

 

throw

 

it

 

away,

 

start

 

again,

 

it’ll

 

take

 

only

 

as

 

long

 

as

 

it

 

takes

 

to

 

get

 

right.)

 

Lastly

 

the

 

motor

 

can

 

be

 

fitted

 

to

 

the

 

mount

 

stick

 

with

 

a

 

screw

 

or

 

two,

 

screws

 

skewed

 

to

 

the

 

front

 

so

 

that

 

they

 

could

 

be

 

removed

 

through

 

the

 

front

 

for

 

servicing.

 

The

 

motor

 

can

 

now

 

be

 

taken

 

out

 

again

 

so

 

it

 

does

 

not

 

get

 

filled

 

with

 

balsa

 

dust

 

later.

 

 

Front

 

and

 

rear

 

sections

 

ready

 

to

 

join.

 

The

 

‘bar’

 

through

 

the

 

fuse

 

is

 

keeping

 

the

 

bearings

 

aligned.

 

The

 

front

 

section

 

is

 

now

 

ready

 

to

 

join

 

to

 

the

 

rear

 

section

 

when

 

that

 

is

 

complete.

 

Tail

 

Section

 

of

 

Fuselage

  

Locate

 

parts

 

FS1

 

and

 

FS2.

 

Pin

 

the

 

1/8”

 

square

 

longerons

 

to

 

the

 

plan

 

and

 

glue

 

in

 

the

 

cross

 

pieces,

 

and

 

FS1

 

and

 

FS2

 

at

 

the

 

tail.

 

A

 

piece

 

of

 

1/8”

 

square

 

stock

 

has

 

been

 

used

 

in

 

the

 

photo

 

between

 

FS1

 

and

 

FS2

 

to

 

maintain

 

the

 

spacing

 

required

 

for

 

the

 

later

 

insertion

 

of

 

the

 

horizontal

 

stabiliser.

 

Make

 

sure

 

it

 

does

 

not

 

get

 

glued

 

in!

 

 

Fuse

 

tail

 

construction

 

starts.

 

When

 

the

 

first

 

side

 

has

 

hardened

 

remove

 

it

 

from

 

the

 

plan,

 

turn

 

it

 

over,

 

cover

 

with

 

a

 

layer

 

of

 

cling

 

wrap

 

and

 

build

 

the

 

second

 

side

 

over

 

the

 

first

 

so

 

the

 

two

 

are

 

identical.

 

 

Summary of Contents for BE2C

Page 1: ...ights Reserved Rev 07 11 BE2C 36 7 8 1 12th Scale R C Scale Model Instructions CONTACT INFORMATION Designed by M K Bengtson Prototype by John O Duffy Manufactured and Distributed by Bengtson Company e...

Page 2: ...uilders like CA glues which certainly speeds construction in general but ensure your work area is well ventilated as many people have adverse reactions to the poisonous fumes Epoxy glue should be used...

Page 3: ...to length as you fit them Do not distort the structure by trying to squeeze in a rib that is just too long a couple more strokes on the sandpaper and it ll be perfect If you over sand any and it s to...

Page 4: ...es Cut to length the x leading edge from your stick stock Carefully removing sanding off one point of the square section for its length as indicated by the plans test and then fit the leading edge to...

Page 5: ...s Also if you are recessing the cover add another piece of 1 8 balsa to the front servo rail flush with the wing ribs to finish the box and attach the covering material to The servo is attached to the...

Page 6: ...lacing holes to the rear Using epoxy attach the two fuse sides with F2 and F6 between to F1D and then the cross braces to the top Take time at this stage and use straight edges and squares to ensure e...

Page 7: ...balsa this is a fairly simple curve to start with Use card to create a pattern you ll find balsa bends away from the wet side balsa expands as it soaks and shrinks back as it dries Be prepared to have...

Page 8: ...the bottom surface of the tail section are a flat plane allowing both to be flat to the building surface during construction Use straight edges or blocks fixed to the plans either side of the forward...

Page 9: ...pes is to start with card cut a rectangle bigger than you need Lay over the fuse and mark the length you need to have crossways to get the lowest points of the cut outs in the correct position on the...

Page 10: ...bs as required to ensure the wheel spins straight To form the tyres massage one side of the neoprene so it starts to curl continue and it will form a circle near enough anyway Use CA to glue the ends...

Page 11: ...o level things up Check the distance between some fixed point on each wing say the root end of the aileron space or where the last wing tip rib meets TE and the point of the aft end of the fuse This s...

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