Ripmax Trainer 40 User manual

Brand: Ripmax

Model: Trainer 40

Category: Remote controlled toys

Type: User manual

Ripmax Trainer 40, an exceptional training aircraft, empowers you to master the skies with ease. This sophisticated model boasts a sturdy airframe, enabling you to perform loops, rolls, and stall turns with confidence. Its user-friendly design makes it perfect for beginners, providing a stable and forgiving platform to learn the intricacies of model flying.

Trainer 40 Instruction Manual

Introduction

Trainer 40 Instructions

Thank you for purchasing the Trainer 40,

and welcome to the dynamic world of

model aviation! Perhaps more so than any

other branch of model Operation, model

aircraft present a unique set of challenges

Trainer 40 will help you to

master these, enabling you to

become a proficient and safe pilot.

Your Trainer 40 instruction manual

will take you step by step through

the building, installation and

Operation of every aspect

of a modern and

sophisticated

training aircraft.

Following a logical building sequence,

illustrated with both photographs

and detailed descriptions,

the Trainer 40 will

assemble with

ease and in

the minimum

of time.

To help you choose the most

suitable accessories for your model, a

complete list of recommended hardware is

included together with basic tool and

adhesive requirements.

Completed, your Trainer 40 will equip you

with the best available airframe with which

to master the challenge of model flying. It is

strongly recommended that a local club is

joined whose members can check the

model over, carry out the initial test and

trimming flights and then teach the fledgling

pilot the intricacies of model flying, all within

a safe and controlled environment.

Once solo and competent, the Student will

be able to explore the more advanced flying

capabilities of the Trainer 40, such as loops,

rolls and stall turns. These, and other

manoeuvres, are possible from the same

basic airframe and will equip the Student

with an understanding of all

things aerodynamic.

Before starting

Right hand wing panel

Left hand

wing panel

Fin

Fuselage

Remove the protective wrapping and identify the airframe components. The wing panels include the ailerons hinged and

The tailplane includes the elevator hinged and fitted. The fin includes the rudder hinged and fitted. The fuselage includes

mount and noseleg bracket fitted and the control pushrods.

Open the large accessory bag and identify the Contents.

Keep the smaller bags sealed until their parts are required

for use, this will prevent losing any item.

fitted.

the engine

A Fuel tank with accessories and

foam packing

B Nose wheel and pair of

main wheels

C Selection of spare wood for any

minor repairs

D Engine Spinner and securing

screws

E Various mounting hardware and

moulded components

F Wing retaining elastic bands

G Main undercarriage legs

H Nose wheel undercarriage leg

J Aileron pushrods

K Seif adhesive covering repair

strip

L Aileron servo mounting tray

and bearers

Further items and tools required

In order to build your Trainer 40 model a selection of hand

tools and adhesives will be required.

These include:

Steel ruler

Cyanoacrylate adhesive medium viscosity

5 minute epoxy adhesive

30 minute epoxy adhesive

Pliers

Side cutters

Modelling knife

Small file

Small allen key

Feit tip pen

Ball point pen

Masking tape

Pin chuck with 1.5mm and 2mm drills

Small cross point screwdriver

Trainer 40 Instructions

Joining the wing panels

1. Locate the wing joiner and slide it into the slot of the left hand wing panel. If required, carefully file the opening of the slot to

allow the joiner to pass freely into the wing. Using a pen, mark onto the joiner the centre line position. Trim away the covering at the

aileron servo openings on the wing underside.

1.1 Correct orientation of the wing joiner

4fc ^r

1.2 Mark the wing joiner with the wing

centre line

1.3 Trim away the covering at the aileron

servo openings

2. Following the adhesive's instructions, mix up sufficient five minute epoxy and spread the adhesive evenly onto all sides of one

half of the wing joiner. Making sure the joiner is the correct way up, push the joiner into the left hand wing panel up to the centre

line mark, wiping off any excess adhesive. Allow epoxy to set.

2.1 Applying epoxy to one half of joiner 2.2 Pushin left hand wing panel 2.3 Wiping off excess adhesive

3. Trial fit the right hand panel by sliding it over the protruding joiner, checking that the two wing panel faces meet without an

excessive gap. Note that the wing is not flat but has a slight bend, called dihedral. This is built in automatically using the joiner and

panel faces. When satisfied apply PLENTY of epoxy to the joiner and panel face, sliding the joiner into the right hand wing panel and

bringing the two wing halves together. To ensure sufficient working time use 30 min or 1 hour epoxy. Wipe off any excess adhesive

and use masking tape to hold the panels aligned together. Allow the epoxy to set and remove the tape.

3.1 Applying epoxy to the joiner

and panel face

4. Approximately six millimetres from

the wing join, apply masking tape to

each panel all around the wing. Using a

piece of card or thin wood, scrape

five minute epoxy into the join between

the two masking tape runs. Remove

the tape and allow the epoxy to set.

3.2 Pushing the right hand panel over

the joiner

3.3 Using masking tape to hold the

panels aligned together

4.1 Masking tape applied all around

wing join

4.2 Scraping epoxy into the join

Trainer 40 Instructions

itting the aileron servc

5. Position the aileron servo mounting tray centrally over the cut-out in the wing underside. Using a Sharp modelling knife score

around the tray being carefui only to cut through the covering and not the wing sheeting beneath. Remove the covering and glue the

tray in place using medium cyanoacrylate adhesive. Dependant upon the depth of the servo, it may be necessary to glue the two

servo spacers to the tray to raise the servo to clear the wing.

5.1 Aileron servo tray and servo spacers 5.2 Scoring around aileron servo tray

5.3 Tray glued to wing and spacers

glued to tray

6. Following the manufacturer's instructions, fit the rubber servo mounting grommets and brass ferrules supplied with the radio

enuipment to the aileron servo and locate the servo in the tray. Drill 1.5mm pilot holes for the four securing screws supplied with the

and screw the servo in place, orientating the servo lead to the front of the model.

6.1 Installing aileron servo 6.2 Drilling pilot holes 6.3 Screwing servo in place

7. Centre the aileron servo by switching on the radio equipment with the sticks centralised and trim levers at neutral. Switch off and

disconnect the aileron servo. Trim off the two unused arms from the servo arm. With the servo arm placed parallel with the

wingspan, push the arm onto the servo. Using a 2mm drill, open out the holes in the servo arms corresponding to approximately

11 mm each side of centre.

7.1 Trimming off the unused servo arms 7.2 Aileron servo centred with

arm attached

7.3 Drilling out the servo arm to 2mm

8. Identify the hardware used in the

aileron linkage as shown in the

photograph. Screw in place the two aileron

torque rod horns to an equal distance of

25mm from the wing underside

8.1 Aileron drive hardware

8.2 Aileron torque rod horns in place

Trainer 40 Instructions

9. Thread a plastic clevis keeper onto each of the two clevises. Holding the threaded pushrods using pliers screw the two nylon

clevises onto the ends of the pushrods. Open the clevises and snap them into the torque rod horns.

9.1 Threading clevis keeper onto a clevis

9.2 Screwing the clevises to

the pushrods

9.3 Connecting the clevises to the

torque rod horns

10. Holding in turn each aileron centred with the wing, mark the position where the pushrod crosses the 2mm hole in the servo arm

with a felt tip pen. Using a pair of pliers, bend the pushrod up through 90 degrees at this point and cut off the excess length,

leaving 6mm of pushrod after the bend.

10.1 Marking the pushrod bend position 10.2 Bending the pushrod at 90 degrees 10.3 Trimming off the excess length

11. Thread the pushrods into these holes followed by a swing keeper onto the pushrods, snapping the keepers into place

on the pushrods.

11.1 Pushrod threaded through servo

arm hole

11.2 Swing keeper threaded

onto pushrod

11.3 Swing keeper snapped %&

onto pushrod

12. Reconnect the servo to the receiver and check that the ailerons are centred at neutral. The clevises can be undipped from the

torque rod horns and wound in or out to achieve this. Secure the arm to the servo using the manufacturer's screw. Finally, push the

clevis keepers closer to the torque rod horns. Note that one aileron will rise and one will fall - this is correct and is

necessary to effect a turn.

12.1 Securing arm to servo

12.2 Clevis keepers in final position

12.3 Completed aileron

servo installation

Trainer 40 Instructions

Fitting the undercarriage legs and wing retaining dowels

13. Identify the undercarriage components as shown in the photograph.

These include: three wheels, six wheel retaining collets, a nose leg, nose

leg steering arm, two main undercarriage legs, two main undercarriage

clamps and four clamp retaining screws.

13.1 Undercarriage hardware

14. On the underside of fuselage, locate the slot for the main undercarriage, cutting through and removing the covering material.

Insert the two undercarriage legs into the holes in the mounting blocks and secure the legs with the two undercarriage clamps and

four retaining screws.

14.1 Cutting away the covering over the

main undercarriage slot

14.2 Inserting the main undercarriage legs

14.3 Completed main

undercarriage fixing

15. Connect the nose leg steering arm to the lower wire pushrod in the front of the fuselage and engage it into the slot of the nose

leg moulding. Pass the nose leg through the nose leg moulding and into the steering arm. Note that the groove in the leg should

face the front of the model and will engage with the screw in the steering arm. Tighten the screw of the steering arm onto

the nose leg.

-^Mrv

15.1 Nose leg steering arm located into

nose leg moulding

15.2 Fitting the nose leg to the nose

leg moulding

15.3 Tightening the steering arm screw

16. Fit a wheel collet to each of the

three undercarriage legs in a position

just outside the bend of the axles. Add

the wheels and retain them with three

further collets ensuring the wheels can

rotate freely. Securely tighten the

collet screws.

16.1 Fitting the inboard collets 16.2 Fitting the wheels and securing

with the outboard collets

Trainer 40 Instructions

17. Using a finger, locate the two wing dowel holes below the wing seating on each side of the fuselage side. Cut away and remove

the covering material at these points and insert the two wing dowels through the holes. Measure the dowels to ensure they are

protruding an equal amount and apply a small amount of medium cyanoacrylate to secure them.

17.1 Cutting away the covering

17.2 Inserting the dowels

17.3 Secure with a drop of medii

cyanoacrylate

•

itting the tail surfaces

18. Using the slot edges as a guide, cut

through and remove the covering

material from the fin and tailplane slots

at the rear of the fuselage.

18.1 Carefully cut through and remove the 18.2 Repeat for the tailplane slot

covering at the fin slot position

19. Assemble the wing centrally to the fuselage and secure it using two wing elastic bands. Trial fit the tailplane by sliding it fully in

place into the tailplane slot. Align it to the fuselage by checking the measurements shown the diagram. Using the wings as a

reference, check that it sits perpendicular to the fuselage by viewing from the rear.

c=ci

19.1 Trial fitting the tailplane

19.2 Tailplane alignment measurements

B B1

20. Using a felt tip pen, mark onto the tailplane upper and lower surfaces the fuselage shape. Remove tailplane from fuselage.

20.1 Marking the fuselage shape onto

the tailplane upper surface

20.2 ....and onto the lower surface

20.3 Marked lines on tailplane

Trainer 40 Instructions

21. Using a modelling knife and ruler carefully cut through ONLY the covering material inside of the marked lines.

Remove the covering material and clean off any trace of pen marks.

21.1 Cutting through only the

covering material

21.2 Covering removed from upper and

lower surfaces

21.3 Cleaning off any trace of pen

22. Mix sufficient 30 minute epoxy and

apply plenty to the exposed upper and

lower surfaces just formed. Slide the

tailplane back into place wiping clear any

excess adhesive, including within the fin

slg^Once more check that the tailplane is

afljwed to the fuselage and leave to cure.

22.1 One hour epoxy applied to both

sides of the tailplane

22.2 Cleaning off excess adhesive

23. Slide the fin into the slot in the rear of the fuselage above the tailplane, checking that it is standing perpendicular to the tailplane

by viewing from the rear. Using a felt tip pen, mark the shape of the fuselage onto both sides of the fin. Remove the fin and, in a

similar way to the tailplane, cut carefully through ONLY the covering material inside of the marked lines. Remove covering material.

23 1 Marking the fuselage shape onto

£ sides of the fin

23.2 Cutting through only the

covering material

23.3 Covering removed from both sides

of the fin

24. Apply plenty of 30 minute epoxy to both sides of the exposed lower part of the fin and slide it in place into the fuselage. Wipe

clear any excess adhesive, checking once more that it is aligned perpendicular to the tailplane. Leave to cure.

24.1 30 minute epoxy applied to both

sides of fin

24.2 ....and to the underside of the

fin strake

24.3 Fin in place and perpendicular

Trainer 40 Instructions

Fitting the fuel tank

25. Identify the fuel tank and its

hardware. Following the diagrams

included, assemble the fuel tank

ensuring that the clunk is free to move

from side to side and up and down. This

will ensure that fuel is delivered

to the engine regardless of the model's

attitude. Tighten the bung screw to

seal the fuel tank.

25.1 Fuel tank and clunk assembly 25.2 Sealing the fuel tank by tightening

the bung screw

26. Pass the fuel tank through the wing opening in the fuselage and into the nose of the model, the neck of the tank protruding into

the opening at the centre of the metal engine mount. Using the foam packing supplied with the fuel tank, support the tank by

packing it around the tank bay.

26.1 Pass the tank into the fuselage

Installing the engi

26.2 Fuel tank neck protruding through

engine mount former

26.3 Support the fuel tank using the

foam packing supplied

27. We recommend the MDS 40 PRO

two stroke engine for powering the

Trainer 40. This powerful, easy to handle,

quiet engine will give many hours of

trouble free, smooth running.

Identify the engine mounting hardware

consisting of two metal clamping

plates, four mounting screws, four shake

proof washers and eight nuts.

27.1 MDS 40 PRO engine used in

the prototype

27.2 Engine mounting hardware

28. Connect to each of the fuel tank outlets a 100mm length of fuel tubing. Their free ends can be taped to the top of the fuselage

to keep them temporarily out of the way. With its carburettor removed, place the engine in the engine mount. The engine's

mounting lugs should sit over the grips moulded into the mount.

28.1 Fuel tubing connected to fuel 28.2 Fuel tubing free ends temporarily 28.3 MDS 40 PRO engine in position on

tank outlets taped out of the way engine mounts

Trainer 40 Instructions

29. Add the clamping plates and screws to either side of the engine. From the underside, thread onto the screws a shake proof

washer and nut. Tighten the screws evenly so that the clamping plates are not distorted and ensure that the engine remains pointing

straight. Finally, add the remaining nuts to each of the screws and tighten in position.

29.1 Clamping plates and screws

in position

29.2 Adding the shake proof washer

and nut

29.3 Lock nuts added and tightened

30. The engine's throttle is controlled by the movement of a pushrod located in the front, upper part of the fuselage. Thread the

pushrod's Z bend into a hole in the carburettor's throttle arm and, following the engine manufacturer's instructions, secure the

carburettor to the engine. Attach also the engine's silencer, ensuring the holding screws are well tightened. Trim to length and

connect the fuel tank's clunk tank outlet to the engine^ carburettor and the fuel tank's upper vent to the silencer's pressure nipple.

T^remaining fuel tank outlet is the filling port and the tubing is simply sealed using a suitable clean screw.

30.1 Attaching the pushrod Z bend to

the throttle arm

30.2 Securing the engine's silencer

in place

30.3 Connecting the fuel tubing to

the engine

31. Looking from the rear of the model, the rudder horn is fitted on the left hand side of

the rudder at a position approximately 25mm from the base of the rudder. Hold the

horn in place on the rudder, aligning the horn clevis holes with the rudder hinge centre

lir ^pbnd drill through the horn mounting holes into the rudder with a 2mm drill. Secure

the horn in position with two 11 mm long self tapping screws which pass through the

horn, into the rudder and into the horn backing plate.

31.2 Drilling the rudder for fixing screws

31.3 Securing the horn to the rudder

using two screws and backing plate

31.1 Rudder horn position

31.4 Position horn holes in line with

control surface hinge

Trainer 40 Instructions

32. Looking from the rear of the model, the elevator horn is fitted on the right hand underside of the elevator. It should be held at a

distance of approximately 20mm from the centre of the model, with the horn clevis holes aligned with the elevator centre line. Usinc

a 2mm drill, drill the elevator for the securing screws. Secure the horn in position in a similar way to the rudder horn.

32.1 Elevator horn position 32.2 Drilling the elevator for

fixing screws

32.3 Securing the horn to the elevator

using two screws and backing plate

Installing the fuselage servo

33. Following the manufacturer's instructions, fit the rubber servo mounting grommets and brass ferrules supplied with the radio

equipment to the elevator, rudder and throttle servos and remove the two wooden pushrods from the fuselage. The servos are

mounted in a ply tray pre-installed in the fuselage. Observe the photograph showing the servo arrangement and install the server^

into the plywood tray. Drill 1.5mm pilot holes for the four securing screws supplied with each servo and screw the servos in placer

33.1 Arrangement of rudder, elevator

and throttle services

33.2 Install the servos, allowing their leads

to pass underneath the tray towards the

throttle servo

33.3 Drill 1,5mm pilot holes for the

securing screws and screw in place

Installing the elevator pushrod

34. Locate the slot for the elevator pushrod

(on the right hand side of the fuselage,

looking from the rear) and cut through and

remove the covering. Note that the elevator

pushrod is the longer of the two wooden

pushrods. Insert the threaded end of the

pushrod through the fuselage opening at

the wing position, down into the fuselage

and out through the slot.

34.1 Cutting through and removing the

covering material from the pushrod slot

34.2 Threaded end of pushrod passed

through slot

35. Fit a plastic clevis keeper onto a clevis and screw the clevis onto the pushrod. Open the clevis and snap it in place into the

middle hole of the elevator horn.

35.1 Fitting clevis keeper onto

a clevis

35.2 Threading clevis onto end

of pushrod

35.3 Clevis snapped into middle hole of

elevator horn

Trainer 40 Instructions

36. Centre the elevator servo by switching on the radio equipment with the sticks centralised and trim levers at neutral. Switch off

and disconnect the servo. Using a 2mm drill, open out the hole in a servo arm which corresponds approximately to 11mm from

centre. Trim off any unused sides of the arm and position it on the servo in line with the width of the fuselage.

36.1 Open out with a 2mm drill the hole

in the servo arm corresponding to 11mm

from centre

36.2 Using side cutters, cut off any

unused arms

36.3 Servo arm in place aligned with

width of fuselage

37. With the elevator held at neutral, mark

the wire where it passes over

the hole in the servo arm.

37.1 Elevator held at the neutral position

37.2 Mark the wire where it passes over

the hole in the servo arm

38. Release the clevis from the horn

and pull the pushrod clear from the

fuselage a sufficient distance to allow

a 90 degree bend to be formed at the

marked position. Cut off any excess

wire to leave 6mm of pushrod after

the bend.

38.1 90 degree bend formed at

marked position

38.2 Cut off excess wire to leave

6mm of pushrod beyond the bend

emove the arm from the elevator servo and thread it over the bend formed on the pushrod followed by a swing keeper,

sniping the keeper into place.

39.1 Servo arm threaded onto pushrod

39.2 Swing keeper in place on pushrod 39.3 Swing keeper snapped over pushrod

40. Replace the arm onto the elevator

servo, securing in place with the

radio manufacturer's screw. Re-attach

the clevis and slide the clevis keeper

closer to the horn.

40.1 Servo arm secured in place with 40.2 Clevis replaced and clevis keeper in

manufacturer's screw final position

Trainer 40 Instructions

I'-HUH

nstalling the rudder and nose leg pushr<

41. Locate the slot for the rudder pushrod (on the top face of the left hand side of the fuselage, looking from the rear) and cut

through and remove the covering. Insert the threaded end of the pushrod through the fuselage opening at the wing position, down

into the fuselage and out through the slot.

41.1 Cutting through and removing the

covering material from the pushrod slot

41.2 Locate the pushrod using a loop of

flex and pull it through the opening

41.3 Threaded end of pushrod passed

out of slot

42. Thread a plastic clevis keeper onto a clevis and screw the clevis onto the pushrod. Open the clevis and snap it in place into the

middle hole of the rudder horn.

42.1 Threading clevis keeper onto a clevis 42.2 Threading clevis onto end of pushrod 42.3 Clevis snapped into middle hole of

rudder horn

43. Centre the rudder servo by switching on the radio equipment with the sticks centralised and trim levers at neutral. Switch off ana

disconnect the servo. Using a 2mm drill, open out the hole in a servo arm which corresponds approximately to 11mm from centre.

Note that as well as operating the rudder, the rudder servo also controls the steerable nose leg, utilising the opposite side of the

servo arm to do this. Trim off any unused sides of the arm and position on the servo in line with the width of the fuselage.

43.1 Open out with a 2mm drill the hole

in the servo arm corresponding to 11mm

from centre

43.2 Using side cutters, cut off any

unused arms

43.3 Servo arm in place aligned with

width of fuselage

44. With the rudder held at neutral, mark

the wire where it passes over the

hole in the servo arm.

44.1 Rudder held at the neutral position

44.2 Mark the wire where it passes ove

the hole in the servo arm

Trainer 40 Instructions

45. Release the clevis from the horn and

pull the pushrod clear from the fuselage

a sufficient distance to allow a 90 degree

bend to be formed at the marked

position. Cut off any excess wire to

leave 6mm of pushrod after the bend.

45.1 90 degree bend formed at

marked position

45.2 Cut off excess wire to leave

6mm of pushrod beyond the bend

46. Remove the servo arm. Unscrew the grub screw from the centre of an adjustable connector and attach the connector to the

rudder servo arm approximately 11mm from the centre and on the opposite side to the rudder pushrod. Only tighten the screw into

the first nut an amount to allow the connector to freely rotate and then apply a small drop of medium cyanoacrylate and add the

second lock nut and tighten the two nuts together. Check that the connector is still free to rotate and replace the central grubscrew.

46.1 Connector illustration

46.2 Connector fitted to rudder

control horn

46.3 Small drop of medium cyanoacrylate

applied together with locknut

47. Thread the rudder servo arm over the bend formed on the rudder pushrod followed by a swing keeper, snapping the

keeper into place.

47 J Servo arm threaded onto pushrod

..#

47.2 Swing keeper in place on pushrod

47.3 Swing keeper snapped over pushrod

48. Thread the steerable nose leg

pushrod through the adjustable

connector, at the same time replacing

the arm onto the rudder servo. With the

nose wheel held centred, mark the

pushrod at a position 8mm beyond the

adjustable connector. Remove the servo

arm and cut the pushrod to the

marked line.

48.1 Nose wheel held centred 48.2 Marking nose leg pushrod position

Trainer 40 Instructions

49. Pass the pushrod again through the connector and replace the arm onto the servo, securing in place with the radio

manufacturer's screw. With the wheel held centred, tighten the grub screw of the connector onto the pushrod. Re-attach the rudder

clevis and slide the clevis keeper closer to the horn.

49.1 Nose leg pushrod through

connector and securing servo arm in

place with manufacturer's screw

49.2 Tightening connector grub screw

with wheel centred

49.3 Clevis replaced and clevis keeper

in final position

Installing the receiver switch

50. Form the switch operating arm from

one of the discarded pieces of wire

pushrod. Bend a 90 degree bend of

approximately 8mm length on one end of

the wire. Check the fit of the wire in the

hole in the switch and if necessary open

out the hole to suit.

50.1 Bending the first bend of the switch

operating wire

50.2 Open out the hole in the switch to

suit the wire

51. Place the backing plate of the switch

over the remaining rectangular hole in the

servo tray and use it to drill two, 2mm

holes for the switch mounting. Pass the

switch from the underneath into the tray

hole, add the backing plate and secure in

place with the two screws supplied.

Drill a suitable hole for the operating arm

wire in the fuselage side in line with the

switch side.

52. On the other end of the wire make a 45

degree bend, facing towards the rear of the

model, to form a grip. Pass the wire

through the fuselage side and thread the 90

degree bend into the hole in the switch.

The wire is prevented from becoming

detached by gluing a repair piece of wood

onto the tray, allowing it to rest against the

wire. Ensure the switch operates

smoothly and that it follows convention by

arranging the operating arm to push for 'on'

51.1 Using the switch backing plate to

drill the two mounting holes

51.2 Drilling fuselage side for ^

operating arm in line with switch side

52.1 45 degree bend formed on other

end of wire

52.2 Scrap piece of wood glued to tra

to prevent the operating arm becomir

detached

Trainer 40 Instructions

Installing the throttle pushr

53. Position the throttle servo to represent maximum throttle by switching on the radio equipment with the throttle stick fully

upwards and trim lever at neutral. Check too that the servo moves in the correct direction to close the throttle. Switch off and

disconnect the throttle servo. Prepare the throttle servo arm by attaching a connector, in a similar way to the nose leg arm, at a

distance approximately 16mm from centre. Trim off any unused arms. Push the throttle to fully open, thread the connector onto the

pushrod and fit the arm onto the servo at approximately 45 degree angle, facing forwards.

53.1 Throttle stick at maximum power

(Inset shows corresponding throttle position)

53.2 Throttle servo arm with connector

in place

53.3 Servo arm at 45 degrees

54. Make a mark on the pushrod wire approximately 8mm beyond the connector, remove the arm and cut the pushrod to the mark,

arm back in place onto the pushrod and in the same position on the servo and tighten the connector grub screw. Operate the

to check that when the throttle stick is in the fully down position the carburettor throttle is almost closed without stalling the

servo. If it is not possible to reduce the servo arm movement to prevent this happening using the transmitter, the connector will

have to be moved closer to the servo arms centre and the process repeated. Check also that, by moving the throttle stick trim lever

fully downward, the engines throttle becomes completely closed, which will stop the engine if desired. Finally, secure the servo arm

using the manufacturer's screw.

54.1 Marking throttle pushrod length

54.2 Throttle stick at minimum power

54.3 Throttle in closed position

Fitting the battery, receiver a

5Fia?'ug the receiver battery into the switch

harass, wrap the battery in foam for

protection and install it into the fuselage just

behind the fuel tank. Connect all the

remaining leads into the receiver, wrap also

* in foam for protection and install into the

fuselage between the fuel tank and servo

tray. The receiver aerial should be lead out of

the receiver in a direct route and the aileron

55.1 Receiver wrapped in foam

extension lead and battery charging lead left f

tection

accessible in the front of the fuselage.

55.2 Receiver and battery installed in

front of fuselage

56. Prepare an aerial pull stop by drilling two 2mm holes in a piece of the repair wood and thread the aerial into it. Drill a 2mm hole in

the fuselage side close to the rear wing dowel for the aerial outlet. With the pull stop remaining on the inside of the fuselage, lead

the aerial out through this hole, leaving the minimum of aerial between the receiver and pull stop.

56.1 Aerial pull stop

56.2 Aerial threaded through pull stop

56.3 Drilling a 2mm hole for the aerial outlet

Trainer 40 Instructions

57. Cut a piece of fuel tubing to

approximately 20mm length and push a

safety pin through the centre of the tubing.

Thread the free end of the aerial down the

tubing between the pin and push the pin

into the top of the fin. Pull the aerial tight

and push the pin firmly into the tubing.

57.1 Safety pin pushed through tubing 57.2 Aerial threaded into tubing and

pinned to fin

Fitting the propeller and spinner

58. Following the engine manufacturer's

recommendations, choose a propeller

suitable for both the engine and model

(typically a 10X6 with a 40 size two

stroke engine). Check the balance of the

propeller and if necessary lightly sand

the heavy blade to achieve a balance.

58.1 Checking propeller balance

58.2 Backplate location pegs

Push the spinner backplate onto the engine shaft followed by the propeller, washer and nut. As the compression resistance is felt, it

will feel more natural to flick the propeller with the blade tightened in the 12 o'clock position. Before tightening the nut check that

the two pegs of the backplate are resting against trailing edge of the propeller blade. Tighten the nut securely.

59. Fit the spinner using the two screws

provided. Depending on the make of

propeller, it may be necessary to trim

the cut outs in the spinner to allow

the spinner to locate into the backplate.

Tighten the screws securely and check

that the assembly rotates true.

59.1 Trimming cut outs in spinner

59.2 Tightening spinner securing screws

Trainer 40 flying instructions

Pre Flight

Before flying your Trainer 40, three essential checks need to be

carried out. These are best done, and corrected if necessary,

before arriving at the flying site. Your local club instructor should

also be asked to carry out these checks and would find it helpful

to have this manual at hand for reference to certain dimensions.

Check No. 1 - Balance point

In order for the model to fly in a controlled fashion the model

must balance with the fuselage horizontal at a point 85mm back

from the leading edge of the wing. The receiver battery can be

moved forwards or rearwards to achieve this.

Check No. 2 - Control surface movements

The amount of control surface movement also has an effect on

the control ability of the model. With the transmitter sticks at full

defection the corresponding control surface movements should

be adjusted to the dimensions below, all measured at the trailing

edge of the control surface.

Ailerons 6 mm up, 6 mm down

Elevator 12 mm up, 12 mm down

Rudder 25 mm left, 25 mm right

Equally important to check is the direction of control surface

movements. Standing behind the model, move the transmitter

sticks and observe the surface movements. Use the transmitter

servo reversing facility to correct the movement direction.

Ailerons Stick right - LH aileron down, RH aileron up

Stick left - LH aileron up, RH aileron down

Elevators Stick back - elevator up

Stick forward - elevator down

Rudder Stick right - rudder right, nose wheel moves right

Stick left - rudder left, nose wheel moves left

Check No. 3 - Engine

If the engine is brand new, follow the engine manufacturer's

starting instructions and run the engine for a couple of tanks of

fuel to ensure it will deliver adequate power with reliable

throttling. Always be aware of the dangers to yourself and other

persons from therotating propeller. Remain clear of the front of

the propeller arc once the engine is started and never point the

model towards other people, animals or property.

Flying

Before flying your model for the first time you MUST check the

control range of your radio control system. Start the engine and

Trainer 40 Instructions

have a helper hold the model ensuring that they are clear of the

propeller. Retract the transmitter aerial and walk away moving

the control sticks on the transmitter. Run the motor to full

power and repeat the movements. You should be able to walk

between 25-30 metres without interference or losing control. If

you lose control or the radio appears to have interference do not

attempt to fly. Rectify the problem and repeat the above

procedure until a satisfactory result is accomplished.

Contact the British Model Flying Association on 01162 440 028

for details of your local model flying club.

Choose a calm, bright day to test fly your Trainer 40. It is highly

recommended that your club instructor conducts the test flight

and trims out the model for you, but if this is not possible, and

the flying site rules allow beginners to fly unsupervised, follow

the instructions below.

On smooth ground, place the model pointing into wind. Hold the

model whilst you run the engine to maximum power and make

a final check that all the controls operate correctly.

^ elevator at neutral and when ready open the throttle

smoothly and positively and the Trainer 40 will accelerate. A

small amount of right rudder will be needed to hold the model

straight during the take off. As the model's speed increases the

model will become light. At this point gently apply up elevator to

lift the Trainer 40 off the ground. Hold the elevator movement

and continue climbing, keeping the wings level with small inputs

of aileron. The rudder can be returned to neutral for the

remainder of the flight.

Once a comfortable height has been reached, enter a turn

direction that will take the model away from any spectators. Use

only small aileron and elevator inputs. Fly away from yourself for

a short distance and turn again, this time onto a downwind

heading. The model should be climbing steadily throughout with

ample airspeed. Continue to fly downwind and then make

another turn to fly crosswind back towards yourself. Make one

more turn to align the model back into wind and pointing

towards the take off area. Reduce the throttle to a cruise,

maintaining sufficient power to hold the model's height and

airspeed. It is likely that with the elevator returned to neutral the

Tl^pll may want to sink or climb and this should be corrected

using the elevator trim control. Like wise, the wings may want

to bank left or right with neutral aileron. Again, this can be

trimmed out using the aileron trim.

With the trimming having taken place during the model's into

wind flight you can now enter another turn, again in a direction

away from any spectators, and fly another circuit, adjusting the

engine's throttle to maintain a constant height. This is the

correct way to control the models altitude, NOT by pulling or

pushing with the elevator control.

Remember that airspeed = safety! Flying too slowly, the model

may stall (lose lift) and crash.

It is good practice to fly both left hand and right hand turns so

large, smooth figure of eight turns should be attempted. Do not

allow the model to fly an uncomfortable distance away from you

or to drift in a direction towards spectators. Practice climbing

and descending using the engine throttle as a control but always

leaving plenty of height for recovery, should it be necessary.

As you perhaps are now aware, model flying requires a three

dimensional skill - but is very rewarding once accomplished!

To leave ample fuel for a misjudged approach, after seven or

eight minutes of flying enter a landing circuit. Do this by

reducing the throttle and descending downwind parallel with the

take off area at a comfortable distance out. Turn the model

crosswind towards you descending gradually, and turn once

more into a position directly into wind and heading towards the

landing area. Carefully adjust the throttle aiming to descend the

model onto the landing strip, keeping the wings horizontal with

small aileron inputs. As the model crosses over the strip, reduce

the .throttle to idle and allow the model to glide onto the

approach. Near to the ground gently apply a small amount of up

elevator to raise the model's nose, slowing the model and flaring

out. Judged correctly, the main wheels should touch the ground

just as the model's wing lift can no longer support the

aircraft, the model landing at the slowest possible airspeed.

Allow the model to come to rest, stop the engine using the

throttle trim, switch off the receiver and transmitter, and then

take a well-earned rest!

With more flying, confidence will grow and the Trainer 40's

flight envelope can be fully explored. Slow flying, stalling and

recovery, loops, rolls, stall turns, inverted flight and more are all

possible BUT only to be attempted for the first time with plenty

of height as insurance.

To cater for a natural progression within the sphere of model

flying, Ripmax supply a wide range of flying model aircraft from

gliders to large scale models, incorporating both kit and almost

ready to fly models. Check these out at your local model shop.

Congratulations, Happy and Safe Flying!

Ripmax Pic, Ripmax Corner,

Green Street,

Enfield EN3 7SJ

Email: [email protected]m

Tel: 020 8282 7500

Fax: 020 8282 7501

Website: www.ripmax.com

Ripmax Trainer 40 User manual

Brand: Ripmax

Model: Trainer 40

Category: Remote controlled toys

Type: User manual

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Ripmax Trainer 40 User manual

Ripmax Trainer 40 User manual

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