background image

BE2c

 

36

 

7/8”

    

Page

 

 

10

 
 

 

Copyright©

 

2007

11

    

M.K.

 

Bengtson

  

All

 

Rights

 

Reserved

   

Rev

 

07/11

 

Tail

 

skid

 

Bend

 

a

 

piece

 

of

 

1/16”

 

music

 

wire

 

to

 

the

 

shape

 

shown

 

on

 

the

 

plans.

 

Cut

 

two

 

pieces

 

of

 

1/16”

 

balsa

 

3/16”

 

x

 

1

5/8”

 

and

 

two

 

pieces

 

1/16”

 

x

 

1/16”

 

x

 

1

5/8”.

 

The

 

1/16”

 

kit

 

sheet

 

that

 

held

 

the

 

aileron

 

ribs

 

is

 

a

 

good

 

donor

 

for

 

these

 

balsa

 

parts.

 

As

 

shown

 

on

 

the

 

plans

 

form

 

a

 

‘box’

 

around

 

the

 

1/16”

 

music

 

wire

 

with

 

the

 

balsa

 

strips.

 

Fit

 

the

 

skid

 

to

 

the

 

wire

 

with

 

a

 

small

 

washer

 

either

 

side.

 

Ensure

 

the

 

skid

 

is

 

going

 

to

 

sit

 

correctly,

 

you

 

may

 

have

 

to

 

‘fix’

 

the

 

inside

 

washer

 

to

 

the

 

mount

 

to

 

get

 

everything

 

to

 

sit

 

straight.

 

When

 

you

 

are

 

happy

 

install

 

the

 

outside

 

washer

 

and

 

bind

 

the

 

end

 

of

 

the

 

axel.

 

Trim

 

axel

 

to

 

suit.

 

Make

 

sure

 

the

 

skid

 

still

 

moves

 

on

 

the

 

axel.

 

Arrange

 

a

 

mount

 

near

 

the

 

top

 

of

 

the

 

structure

 

for

 

the

 

elastic

 

‘shock

 

absorber’

 

shown

 

on

 

the

 

plans.

 

This

 

shock

 

absorber

 

could

 

be

 

thin

 

dressmakers

 

elastic

 

or

 

even

 

a

 

suitably

 

sized

 

rubber

 

band.

   

Trail

 

Assembly

 

Using

 

no

 

glue!

 

This

 

is

 

a

 

dry

 

test

 

assembly

 

run

 

to

 

ensure

 

all

 

major

 

components

 

fit

 

well.

 

Place

 

the

 

top

 

wing

 

upside

 

down

 

on

 

your

 

work

 

surface,

 

support

 

under

 

the

 

mid

 

section

 

with

 

the

 

1”

 

dihedral

 

blocks

 

we

 

used

 

to

 

set

 

the

 

tips

 

so

 

that

 

the

 

wing

 

has

 

some

 

support.

 

Fit

 

the

 

fuse

 

to

 

the

 

top

 

wing

 

by

 

inserting

 

the

 

carbane

 

struts

 

into

 

their

 

sockets

 

in

 

the

 

top

 

wing,

 

make

 

sure

 

they

 

seat

 

all

 

the

 

way

 

down.

 

Use

 

some

 

light

 

tape

 

to

 

hold

 

in

 

place.

 

Place

 

some

 

support

 

under

 

the

 

fuse

 

tail

 

to

 

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

 

should

 

be

 

the

 

same

 

on

 

both

 

sides

 

and

 

tells

 

how

 

well

 

you

 

put

 

the

 

carbane

 

struts

 

and

 

fuse

 

sides

 

together.

 

If

 

there’s

 

any

 

discrepancy

 

it

 

will

 

need

 

adjustment

 

during

 

final

 

assembly.

 

With

 

the

 

assembly

 

still

 

upside

 

down,

 

install

 

four

 

IP

 

struts

 

(note

 

there

 

are

 

Forward

 

and

 

Aft

 

IP

 

struts

 

FIP

 

and

 

RIP)

 

in

 

one

 

side

 

of

 

the

 

upper

 

wing.

 

Position

 

lower

 

wing,

 

locating

 

IP

 

struts

 

between

 

the

 

wings,

 

and

 

wing

 

dowels

 

and

 

spar

 

ends

 

into

 

the

 

fuse

 

cut

 

outs.

 

Repeat

 

for

 

the

 

other

 

lower

 

wing.

 

Use

 

tape

 

to

 

hold

 

everything

 

in

 

place.

 

Tape

 

the

 

undercarriage

 

in

 

place.

 

Turn

 

the

 

assembly

 

over

 

and

 

slide

 

the

 

horizontal

 

stabiliser

 

into

 

place.

 

Locate

 

the

 

vertical

 

fin

 

into

 

its

 

slot

 

in

 

FS6.

 

Install

 

the

 

tail

 

skid

 

assembly.

  

There

 

 

looks

 

great!

 

 

FLYING

 

• 

The

 

model

 

should

 

ROG

 

on

 

grass,

 

pavement

 

or

 

hard

 

surfaces.

   

• 

Let

 

the

 

model

 

gain

 

altitude

 

slowly

 

off

 

the

 

runway.

  

• 

Applying

 

too

 

much

 

up

 

elevator

 

at

 

slow

 

speeds

 

risks

 

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:

 

• 

Correct CG location

.

  

• 

Straight

 

non

warped

 

wings.

 

 

CONTACT

 

INFORMATION

 

Distributed

 

by:

 

Bengtson

 

Company

 

e

mail:

 

[email protected]

 

Web

 

Site:

  

www.aerodromerc.com

 

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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