Ripmax Hellcat Slim User manual

C’

C—

HELLCAT

SLIM

INSTRUCTION

MANUAL

Introduction:

Thank

you

for

buying

the

Ripmax

Hellcat

Slim and

welcome

the

instruction

manual.

The

Hellcat

Slim

cartoon

profile

scale

model

the

world famous

Grumman

Hellcat

Second

World

War

naval

fighter.

The

profile

fuselage

and

intentional deviations

from

scale

result

model

which

capable

manoeuvres

even

the full

size

aeroplane

could

not perform.

With

the

right

pilot

the

model

capable

all

normal aerobatic

manoeuvres

such

rolls,

loops,

spins,

etc,

well

hovering

(I/C only),

prolonged

knife

edge

flight,

etc.

For

ultimate

performance

computer

radio

not

needed,

the

model’s

capabilities

are

still

astounding

with

standard

radio.

With

reduced

movement

and

the

C.G.

moved

forward,

the

Hellcat

Slim

becomes

ideal

second

third

model

with

stable

yet aerobatic characteristics.

The

light

weight

the

Hellcat

Slim

gives

the

ability

fly

very

small

areas

the

landing

speed

can

low

that

the

model

does not have

landing

roll

all.

The

Hellcat

Slim

designed

for

electric

motors

540/600

size

along

with

gearbox

alternatively

IC.

engines

from

.15

.19

and

needs

minimum

channel radio.

Although

not

complete

beginners

model

suitable

advanced

trainer with restricted

control surface

movements.

Glues

and

finishing

materials:

Grip

thin

and

thick Cyanoacrylate

adhesive

Grip

minute

epoxy

Grip

PVA

Aliphatic

glue

Covering

materials

Please

aware

the

hazards

involved

the

use

cyanoacrylate

and

epoxy glues

and only

work

area

that

well

ventilated

and

has

good

lighting.

Before

beginning

construction

useful

through

the

kit,

plan

and

instructions

understand

the

building

sequence.

Radio

used

the

prototypes

was Futaba,

both

with

and

without

mixing facilities.

recommend

the

use

mini

size

servos

for

the

flying surfaces,

Ripmax

SD200

servos

were

used

all

the

prototypes.

Page

The

recommended

power

combination

for

the

standard electric

version

is,

M-DYD22802

Speed

600

motor

8.4v

11”

8”-12”

8”

wood

Propellor

M-1784.25

Graupner

Power

Gear

2.5:1

Gearbox recommended

O-7NRCI

700LT

Sanyo

8.4v

1700

mAh

battery

pack

P-SUNG-GS3O

Sung

4-10

cell

Bec

speed

controller

P-PRO-035

Protech

7-10

cell

Bee speed

controller

For

increased

performance

the

following motor

recommended,

M-K70671

Kyosho Magnetic

Monster

turn motor

For

increased

flight

times the

following

battery

pack

recommended,

O-7NRC2000LT

Sanyo

8.4v

2000 mAh

battery

pack

You

will

also

need

suitable

charger

for

the battery

pack.

For

the

I/C

version

recommend,

L-MDS-01700

MDS

with

Quiet

silencer

8”

4”

Propellor

recommended

L-RGA2026

60cc

(2oz)

thel

tank

Wing

construction:

start

wing

construction,

select

from

1/4”

square

strips

the

two

hardest

pieces

become

the

main

spars

(part

20).

Cut

the

ends

the

1/4”

square

wing

joiners

(part

)

per

the

plan before gluing

the

main

spars.

this operation

against

straight

edge

ensure

straight

spar assembly

Select

the

three

wing ribs

for

the wing

root

area

(parts

16).

this

stage

wise

make

hole

the

three

ribs

which make

the

centre

triple

rib

assembly

for

servo

leads

etc.

making

the electric

version

check

that

the

battery

pack

used

fits

snugly in

the precut

battery

supports

(

part

27/28

)

before

laminating them together

shown

on the plan.

Using

the

laminated

battery

support

template mark

and

cut

identical

hole

the

centre

rib assembly.

Take

the

1/4”

square

T/E

(

part

)

and

sand

slight

angle

one face,

the

aim

allow

this

strip

match

the

rear

the ribs

once

glued

the

TIE

sheet

(part

15),

see

wing

section

drawing.

Glue the

TIE

and

T/E sheet

together

and

mark

the

position

all

the

wing

ribs

the

LIE

strip

and T/E

assembly.

the

main spar

the

board

and

dryfit

all

the

ribs.

Offer

up and

support

the T/E

assembly

with

suitable

packing

ensuring

that

the

assembly

supported

level

and

will not

allow

the

wing

twist.

Page

Align

the

ribs

the

TIE

assembly

and

spar

using

square

check

ribs

are

vertical,

Assemble

the

centre section

triple

rib

from

pcs

part

then

glue

all

ribs

the

spar

and

TIE

using

thin

cyanoacrylate

or aliphatic

glue.

Add the

LIE

(part

14)

top

main

spar

and the

front spar (part

24)

using

thin

cyano.

Add

gussets

(cut

from

scrap

)

TIE

tip

rib

joints.

When

glue

thy,

sand

the

top

the

TIE

snip

flush

with

the ribs and add

top

TIE

sheet

(

part

15).

10/

Glue

the

centre

section

sheet

(part

)

from

the

TIE

sheet

forward

over

the

LIE.

The

easiest

way

this

rim

bead

thick

cyano

along

the

rib tops,

spars

and

L/E and

carefully roll

the

sheet

down

starting

at the

TIE

sheet.

Ill

Add

cap

strips

(part

22)

from

TIE

sheet

the

front

the

LIE.

12/

Remove

panel

from

board,

turnover

and

pin down

board.

Add

bottom

front

spar,

cap strips

(parts

21/22)

and

centre

section

sheeting,

leaving

hatch

apertures

open.

13/

Add the

precut

wingtips

along

with

the

1/8”

gussets

and the

1/4”

square

tip

covering

supports.

14/

this

point

you

need

decide

whether

you

will

using

the

GIF

pushrods

supplied

closed

loop

controls

for

the

elevator

and

rudder.

using

I/C

engine

recommend

the

0/F

pushrods, when using electric power

the

lighter

weight

closed

ioop

controls

(

not

supplied)

will

help

minimize overall

weight.

you

have decided

use

closed

loop

controls

you

will

need

fit

small

aluminium

plastic leadout

tubes

into

the

TIE

shown

the

plans,

alternatively,

you are using

pushrods

you

will

need

cut

slots

the

top

wing surface

allow

for

the

pushrod

clevis

connection

the

servo

horns. Add the

1/32”

ply

(pan

)

servo

supports

the

underside

the

top

wing sheeting

having cut

horn slots

required.

15/

Cut

the

aileron

servo

aperture

the

centre

rib

assembly

suit

the

servo

being

used,

then

glue

the

1/32”

ply

aileron

servo mount

(part

)

one

side

the

centre

rib

assembly.

The

aileron

servo

can

then

servo

taped

the

ply.

16/

Sand

entire

wing

ready

for

covering

Page

Fuselage

construction:

Before commencing

fuselage

construction check

the

width

the

gearbox

(

electric)

crankcase

the

engine

(I/C)

used

and

compare

the

plan.

Adjust

the

position

the

upper

motor

mount/engine

bearer

suit

and

trim

pack

the

fuselage

top

core

(part

fit.

Cover

the

plan

with

clear

film

(

solarfllm

backing

perfect),

down

the

fuselage

bottom

cores

(part

and

glue

the

spruce

longeron

(part

and

lower

motor

mount

(part

10)

engine bearer

(

part

)

into

place.

Glue upper

motor

mount/engine

bearer

and

fuselage

top

core

(

part

)

into place.

Add

the

lower

3/8”

square

front

stringer

before

laminating

together

the

pcs

U/C

insert

(

part

and

gluing

into

place.

Using

stringers

(parts

7,8 &

)

assemble

the

remainder

the

fuselage

over

the plan.

Once

the

glue

has set

gently

sand

the

fuselage

smooth

before gluing

the

1/32”

ply

fus

doubler

(part

)

the

front

fuselage,

weight

down

while

glue

dries

avoid

warping.

The

lower

rear

part

the fuselage

can

now

sheeted

with

1/16”

sheet

(part

11).

This

unnecessary

with

the

electric version

but

adds

useful

rigidity

the

I/C

version.

shape

from

1/16”

sheet

(part

II)

the

rear

fuselage

sides.

Where

fitted

the

sheet should

butt

the

back

the

1/32”

ply doubler.

Remove

from the

board,

turn

over

and add

the

other

side

ply

doubler

and

balsa

rear

fuselage

side.

The

front

the 1/16”

sheeting

can

sanded down

blend

into

the

1/32”

ply

doubler.

Carve

and sand

the

engine

failing

(part

)

shape

and glue

fuselage

side,

depending

the

gearbox/engine used

may

necessary

hollow

the

fairing

give

clearance

the

bottom

the

gearbox/crankcase.

Bend tailskid

(

part

)

shape

and glue

and

bind

tailskid

mount

(part

)

which

should

trimmed

the

shape

shown

the

plan.

Glue

tailskid

assembly

into

place

10/

Sand the

fuselage

smooth

and

put

one

side

for

covering.

Page

Control

surface

construction:

Build ailerons, tailpiane,

elevator,

fin

and

rudder

over

the

plan.

Ensure

good

fit

between

the

elevator

L/E and

the elevator

joiner

(part

42).

Glue

the

fin

the

top

rear

fuselage

assy,

packing

the

fin

off

the

board

ensure

correct

positioning.

Bevel

the

leading

edges

the

ailerons,

elevator

and

rudder

and

sand

ready

for

covering

Covering:

Recommended

covering

materials

are

Solarfilm,

Fibaflim

Litespan

which

are

light,

colourful,

flielproof,

easy

apply

and

resistant

puncturing.

For

competition

use

Fibafilm

Litespan

are

recommended

they

are

lighter

and add

stiffness

the structure.

recommended

that

Clearcoat

Balsaloc

used

all

ply

parts,

all

around

the

nose

and around the

wing/fuselage

and

tail/fuselage

joints.

Ensure

that

the

tailplane,

fins and

all

control

surfaces

not

warp

when shrinking

the

covering

material.

All

parts

can

covered

before

final

assembly.

using this

technique

ensure

that the

centre

the

wing

and

tailplane

where

they

are

glued

the

fuselage

are

left

uncovered.

The

cockpit

area

can

covered

contrasting

colour

can

painted.

Final

assembly:

Slide

the

wing

into

position

the

fuselage

taking

every

effort

ensure

that

the wing

perfectly

centralised

and

that

fitted

degrees

the

fuselage

sides,

Also check

that

the

wing

not

tilted

relation

the

fuselage

sides.

A1/16”

thick

packer should

added

the area

the

centre

rib

assembly

whichhas

not yet

been sheeted.

Once

happy

glue the

wing

into

position

with

slow epoxy

PVA.

Once

the

wing/fuselage

glue

joint

has

cured

repeat

the

assembly

procedure with

the

tailplane

Drill

through

the

U/C insert

and

fuselage doublers

for

the

u’c

clamps.

Secure u/c

legs

with

screws

and

nuts

and

fit

wheels, securing

with collets supplied.

4/ Control

surfaces

should

attached with

the

hinges

supplied,

thin

cyano

should

used which

will

“wick”

in to

the

balsa

for

increased

strength.

Add

control

horns

the

ailerons,

elevator

and

rudder.

Page

Electric

installation:

Fit

the

elevator

and

rudder

servos

with

servo

tape

having

centralised

them

and fitted the

servo

horn

first,

helpful

to seal

the

surface

the

ply

mounting

plates

with epoxy

cyano

before

attaching

the

tape.

using

closed

loop

controls

attach

the cables

before installing

the

servos,

both cables

exit

through

one

tube.

Install the

receiver

and

speed

controller

to be

used

then

add

the

battery supports,

ensuring

that

you

leave

room

access

both units.

You

may

need

reposition

the

supports

compared

the

plan

position.

Cut

away

the

bottom

the

fuselage

where

covers

the

battery

cutout

the centre

rib

assembly

and

check

that the battery

used

can

slid

into

position,

trim

rib

necessary.

The

battery

retained

two

elastic

bands.

The

motor/gearbox

used

should

screwed

into

position.

using

the

recommended

Graupner

unit

add

1/8”

ply

liteply

spacers

between

the

fuselage

doubler

and

the

gearbox

space

the

gearbox

slightly

further

outboard.

Enaine

and

fuel

tank

installation:

Fit

propellor

and

spinner

the

engine

and

position

the

engine

over the

bearers.

Mark

and

drill

bolt

holes

then

counter

drill the

balsa

engine fairing to

allow

the

engine

bolts,

fined

with washers,

sit

down

onto the

ply doublers.

Ito

degrees

right sidethmst

can

used

depending

engine/propellor

combinations.

Use

plastic

moulded

thrust

plates

required

Fit

fuel

tank

fuselage

side

behind

and

level

with

the

engine,

advisable

use

some foam

between

the

tank and

the

fuselage

side

avoid

foaming

the

fuel

due

vibration.

The

tank

retained

elastic bands

attached

cup

hooks

screwed

into

the

fuselage

side.

For

the

I/C

version

the

rudder and

elevator pushrods

are

fibreglass rods

and

need

the

wire

pushrod

ends

binding

and

gluing

them

before

final

fitting.

N.B.

important

that the

plastic

pushrod

support brackets

are

drilled

and

fitted

onto the rods

before

both

wire

pushrod

ends

are

fitted

they

cannot

fitted

later.

The

plastic

pushrod

support brackets

are

screwed

the

fuselage

sides

approximately

halfway

along the

length

the pushrod.

Make

sure

that

the

screws

are

located

they

screw

into

part

the

1/8”

3/8”

structure

and

put

drop

epoxy

slow

cyano

the

hole before

finally

tightening

the

screws.

The

battery and

receiver

are

installed

the

left

wing

balance

the

lateral

weight

the

engine.

the

model

one

piece

sensible

fit

remote

charging

facility,

the

ones used

on the

prototypes

were

the

P-R4-ECH

remote

charging

sockets.

Page

Flying

instructions:

Before

flying

the

Hellcat

Slim

for

the

first

time

check

both

longitudinal

and

lateral balance.

The

C/G

should

(

Y2”)

from

the

LIE

the wing.

Use

forward

position

for

first

flights

unless

you

are

experienced

pilot

this type

model.

For

the

ultimate

tight

loops

and

knife

edge

loops

the

C/G

can

moved back

ffirther

but

this

should

only

done

advanced

pilots.

Lateral balance

can

corrected

with

small

amount

lead on the

lefthand wingtip.

For

first

flights

set

control

movements

follows,

Ailerons

I”

each

way

root

Elevator

1/2”

each

way

Rudder

I”

each

way

Please

note that

the

Hellcat

Slim

designed

to be

manoueverable

possible

and

not

designed

for

high

speed

diving

manoeuvres.

Full

power

can

used

during

aerobatics

and

level

flight

but

using

powerifil

engine

not

dive

the

model

steeply with

power

on.

Throttled

back

the

model

can

safely

dived

vertically.

All

normal

manoeuvres

can

performed with

the

Hellcat

Slim, loops,

rolls,

point

rolls,

slow

rolls,

spins

and

inverted

are

all

easy to

perform

without

taking

large

amounts

airspace.

Where the

model comes

into

its

own

the

more advanced

aerobatics

such

hovering,

fast

slow

knife

edge,

knife

edge

loops

etc.

Ensure

that

the

flight battery

pack

retained

securely

elastic bands

can

otherwise

break

free

through

the

hatches,

which

are

only

sprung

into

place

the

front.

PageS

RIPMAX

HELLzCAT

SLIM

Parts

list:

Fuselage

top

core

3/8”

Precut

Balsa

Fuselage

bottom

core

3/8”

Precut

Balsa

Engine

bearer

3/8

3/8”

6”

Hardwood

Longeron

3/8

1/8”

30”

Spruce

U/c

insert

1/8”

Precut Liteply

Fuselage

doubler

1/32”

Precut

Ply

Stringer

3/8”

1/4”

18”

Balsa

Stringer

3/811

1/4”

24”

Balsa

Stringer

3/8”

1/8”

18”

Balsa

10/

Stringer

3/8”

18”

Balsa

11/

Fuselage

side

1/16”

3”

24”

Balsa

12/

cheek

cowl

1/2”

3/4”

6”

Balsa

13/

Tafiskid

mount

1/8”

3/4”

1”

Ply

14/

Wing

LIE

1/4”

36”

Balsa

15/

Wing

TIE

sheet

1/16”

1”

36”

Balsa

16/

Wing rib

(WI)

3/16”

Precut

Balsa

17/

Wing

rib

(W2)

1/16”

Precut

Balsa

18/

Wing

rib

(W3)

1/16”

Precut

Balsa

19/

Wing

rib

(W4)

3/16”

Precut

Balsa

20/

Main

spar

1/4”

36”

Balsa

21/

Cap

strip

1/16”x

1/2”x

18”

Balsa

22/

Cap

strip

1/16” X

1/4”

X36”

Balsa

23/

Centre section

sheeting

1/16”

3”

18”

Balsa

24/

Front

spar

1/8”

1/4”

36”

Balsa

25/

Spar

doubler

1/4”

18”

Balsa

26/

Hatch

1/64

6”

8”

Ply

27/

Battery

support

centre

1/8”

Liteply

28/

Battery

support

sides

1/64”

Precut

Ply

29/

Centre sheet support

1/8”

1/4”

18”

Balsa

30/

Wingtips

1/8”

Precut

Balsa

31/

Aileron

frame

1/4”

3/8”

24”

Balsa

32/

Aileron frame

3/16”

18”

Balsa

33/

Aileron frame

1/4”

1/8”

24”

Balsa

34/

Fin/Rudder

frame

3/16”

18”

Balsa

35/

Fin/Rudder

frame

3/16”

3/8”

24”

Balsa

36/

Fin/Rudder

frame

3/16

1/8”

18”

Balsa

37/

Tailpiane

centre

3/16”

1”

1/2”

Balsa

38/

Tailpiane

frame

3/16”

18”

Balsa

Page

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