background image

BE2c

 

36

 

7/8”

    

Page

 

 

7

 
 

 

Copyright©

 

2007

11

    

M.K.

 

Bengtson

  

All

 

Rights

 

Reserved

   

Rev

 

07/11

 

Then

 

there

 

were

 

two

 

Join

 

the

 

two

 

sides

 

over

 

the

 

plans.

 

Note

 

the

 

sides

 

have

 

a

 

top

 

and

 

bottom

 

now,

 

established

 

by

 

FS1

 

&

 

FS2.

 

Do

 

the

 

bottom

 

surface

 

first,

 

pin

 

SF7

 

in

 

position

 

on

 

the

 

plan,

 

butt

 

the

 

two

 

sides

 

up

 

to

 

SF7

 

keeping

 

them

 

vertical

 

and

 

locate

 

SF5

 

and

 

the

 

small

 

1/8”

 

sq.

 

cross

 

brace

 

(between

 

SF7

 

and

 

SF5),

 

between

 

the

 

two

 

sides,

 

add

 

the

 

1/8”

 

sq.

 

to

 

the

 

front

 

of

 

SF5.

 

Add

 

the

 

remaining

 

five

 

cross

 

pieces.

 

Keep

 

everything

 

flat

 

and

 

the

 

sides

 

vertical,

 

allow

 

to

 

dry.

 

 

Gluing

 

the

 

cross

 

braces

 

bottom

 

surface

 

of

 

the

 

tail

 

The

 

tail

 

piece

 

can

 

now

 

be

 

turned

 

over

 

on

 

the

 

plan

 

and

 

the

 

top

 

surface

 

done

 

similarly

 

using

 

FS6

 

this

 

time.

 

Note

 

‘leave

 

out’

 

two

 

of

 

the

 

cross

 

braces,

 

the

 

ones

 

at

 

locations

 

F10

 

and

 

F11

 

are

 

kit

 

supplied

 

parts

 

and

 

will

 

be

 

attached

 

later.

 

Finish

 

off

 

around

 

the

 

tail

 

area

 

with

 

parts

 

SF3

 

and

 

SF4

 

on

 

each

 

side.

 

(A

 

piece

 

of

 

1/8”

 

scrap

 

sheet

 

wrapped

 

in

 

cling

 

wrap

 

standing

 

in

 

for

 

the

 

horizontal

 

stabiliser

 

will

 

help

 

keep

 

everything

 

aligned

 

and

 

in

 

position.)

 

The

 

ends

 

of

 

SF3

 

and

 

SF4

 

will

 

need

 

light

 

sanding

 

to

 

neatly

 

meet

 

at

 

the

 

point

 

and

 

sides.

 

Making

 

SF3

 

and

 

SF4

 

slightly

 

proud

 

will

 

allow

 

sanding

 

of

 

this

 

area

 

to

 

the

 

profile

 

formed

 

by

 

the

 

two

 

SF7

 

 

Tail

 

section

 

ready

 

to

 

join

 

to

 

front.

 

Joining

 

front

 

and

 

tail

 

fuse

 

sections.

 

This

 

important

 

step

 

is

 

relatively

 

easy,

 

in

 

that

 

the

 

under,

 

rear

 

section/plane

 

of

 

the

 

front

 

fuse

 

and

 

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

 

fuse

 

section

 

to

 

keep

 

it

 

aligned.

 

Rock

 

the

 

fuse

 

back

 

between

 

it’s

 

guides

 

so

 

that

 

it

 

sits

 

flat

 

on

 

the

 

back

 

facet

 

of

 

the

 

under

 

fuse

 

shape.

 

Use

 

some

 

weight

 

to

 

hold

 

the

 

fuse

 

in

 

this

 

‘nose

 

up’

 

attitude.

 

Now

 

slide

 

the

 

tail

 

section

 

(dry,

 

no

 

glue

 

yet)

 

into

 

position

 

locating

 

the

 

4

 

longeron

 

ends

 

into

 

their

 

sockets

 

in

 

the

 

front

 

fuse.

 

The

 

bottom

 

surface

 

of

 

the

 

tail

 

section

 

is

 

flat

 

to

 

the

 

building

 

surface

 

just

 

like

 

the

 

rear

 

of

 

the

 

forward

 

section.

 

Check

 

everything

 

over

 

the

 

plans

 

for

 

length

 

and

 

alignment

 

and

 

that

 

the

 

‘point’

 

of

 

the

 

fuse

 

tail

 

is

 

exactly

 

over

 

it’s

 

position

 

on

 

the

 

plans.

 

Trim

 

longerons

 

if

 

they

 

are

 

too

 

long.

 

When

 

you

 

are

 

happy

 

all

 

is

 

as

 

it

 

should

 

be,

 

slide

 

the

 

tail

 

out

 

again,

 

apply

 

glue

 

to

 

the

 

sockets

 

in

 

the

 

fuse

 

front

 

and

 

slide

 

the

 

tail

 

back

 

into

 

position,

 

check

 

the

 

point

 

of

 

the

 

tail

 

again,

 

and

 

allow

 

to

 

set.

 

Stand

 

back

 

and

 

admire

 

your

 

perfectly

 

straight

 

fuselage.

 

 

Finish

 

off

 

any

 

remaining

 

formers

 

and

 

the

 

cockpit

 

floors

 

in

 

preparation

 

for

 

sheeting

 

the

 

top

 

of

 

the

 

fuse.

 

 

Upper

 

sheeting

 

starts

 

Cut

 

some

 

lengths

 

of

 

1/16”

 

balsa

 

for

 

the

 

upper

 

sides

 

of

 

the

 

fuse,

 

wide

 

enough

 

to

 

fill

 

between

 

the

 

1/8”

 

lower

 

fuse

 

side

 

and

 

the

 

‘chine’

 

line

 

of

 

the

 

upper

 

formers.

 

Sand

 

or

 

plane

 

an

 

angle

 

on

 

the

 

top

 

edge

 

of

 

these

 

to

 

continue

 

the

 

line

 

of

 

the

 

former

 

tops,

 

this

 

will

 

help

 

with

 

fitting

 

the

 

top

 

sheet.

 

Cut

 

the

 

sides

 

to

 

correct

 

length

 

and

 

fit

 

the

 

3

 

pieces

 

either

 

side

 

to

 

the

 

fuse.

 

The

 

aft

 

sides

 

will

 

require

 

some

 

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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