Ripmax mini Bossanova User manual

Brand: Ripmax

Model: mini Bossanova

Category: Toys

Type: User manual

MANUAL

INSTRUCTION

STEP 01

Locate the hinges and insert eight mid-way into the wing's trailing edge (four in each

wing half half). Each of the slots has been pre-cut for the hinges but may need gentle

opening up with a sharp knife. Using thin cyano, pour a couple of drops onto each

hinge - above and below - ensuring the glue soaks into the hinge and the surrounding

wood.

Page 1

STEP 02

Carefully slide each aileron into position, ensuring a gap-free hinge line. Make sure that

each aileron lines up with the wing tips and that they are free to move through their

entire travel. Minimise any hinge gap, then carefully add a couple of drops of thin cyano

to the top and bottom of each hinge ensuring that the glue does not run through the

hinge line onto the bottom of the wing. Turn the wing over and drop more cyano onto

each hinge from the other side.

STEP 03

Locate the aileron servo apertures in the underside of the wing and

check that your choice of servo fits. Adjust the size of the mounting

holes with a sharp knife if required. Carefully pass each aileron lead

through to the centre of the wing using the length of cotton already

in the wing. You may need to extend the length of your aileron servo

leads using a pair of extension leads. Screw the servos in position using

the mounting screws supplied with your radio.

STEP 04

Locate the aileron control horns. They are simply glued in position

on the aileron at the reinforced section immediately to the rear of

the aileron servo cutout. Align the horn hingeline and centre over the

reinforced area as shown. Mark and pilot drill two mounting holes then

glue the horn in place using cyano. Repeat for the other aileron.

STEP 06

Locate the tailplane. Mark a centreline on the rear of the tail as shown. Temporarily

fit the wing to the fuselage, slide the tail in place and make sure it is square to the

fuselage. Measuring from the rear of the wing to the tailplane on each side, adjust the

tailplane's position until both measurements are the same.

STEP 05

Locate a plain wire aileron control rod. Slide a nylon keeper on

the wire, then form a 90° bend 5mm from the end. Attach a servo

connector to your aileron servo's output arm and slide the pushrod

through it. Now connect the bent end to the control horn and close

the keeper. Centre the servo and aileron, then tighten the servo

connector's screw. Repeat for the other aileron and check for free

aileron movement through the entire range of throw.

THE WING

Mini Bossanova - Instr uctions

THE TAIL

STEP 07

Carefully mark the tailplane on the top and bottom where it enters the fuselage using

a soft, water-soluble felt tip pen. Now remove the tailplane.

Page 2

STEP 08

Cut away the covering from just inside the marked lines to give a

film-free surface for the glue to bond on the top and the bottom of

the tailplane.

IMPORTANT NOTE: Ensure that only the film is cut - not

the tailplane - as this will seriously weaken the structure.

STEP 09

Locate the four elevator hinges (two each side) and insert them half way into the pre-

cut slots. Using thin cyano, pour a couple of drops onto each hinge - above and below

- ensuring the glue soaks into the hinge and the surrounding wood.

STEP 10

Locate the bent wire elevator joiner and place it in the rear of the

tailplane slot in the fuselage. VERY IMPORTANT: Do not omit

this step as it will be almost impossible to fit it after the

tailplane has been glued in position. Now glue the tailplane

in position using epoxy, checking that it is correctly aligned and square

to the fuselage and wing seat. You may wish to use masking tape to

protect the covering whilst you do this (removing it as soon as you are

satisfied with the alignment and before the epoxy cures). Any excess

epoxy can be wiped from the model before it cures using methylated

spirit or methanol.

STEP 12

Once the epoxy has cured, flex the elevators to ensure that they move

freely through their entire range of travel.

STEP 11

Once the glue has thoroughly cured, the elevators can be fitted. Apply

a small quantity of 5 minute epoxy to the elevator joiner as shown.

Now slide the elevator onto the wire joiner and ensure that both

hinges enter the pre-cut slots in the elevator. Ensuring a gap-free hinge

line, add a couple of drops of thin cyano to the top and bottom of each

hinge ensuring that the glue does not run through the hinge line onto

the bottom of the tail. Turn the model over and drop more cyano onto

each hinge from the other side. Repeat for the second elevator half.

Mini Bossanova - Instr uctions

STEP 13

Locate the three rudder hinges and slide them half way into the rudder. Using thin

cyano, pour a couple of drops onto each hinge - above and below - ensuring the glue

soaks into the hinge and the surrounding wood.

Page 3

STEP 14

Screw the pre-bent tailwheel assembly to the rear of the fuselage as

shown after pilot drilling holes for the mounting holes. Ensure that

the wire is aligned with the rear of the fuselage. Carefully drill a hole

in the bottom of the rudder to accept the bent end of the tailwheel

wire and test fit the rudder.

STEP 15

Apply a small quantity of epoxy onto the wire. Slide the rudder into

position, ensuring free movement left and right and a gap-free hinge

line. Now apply a couple of drops of thin cyano to each side of each

hinge taking care not to allow the adhesive to run through the gap

onto the other side of the model.

STEP 16

Locate the three part aluminium motor mount. Attach your choice of

brushless motor to the forward part of the mount as shown. Screw

the remaining two parts of the motor mount to the front bulkhead

as shown using the screws and captive nuts supplied.

STEP 18

Fit your choice of propeller adaptor on the motor and test fit the ply

spinner rings over the adaptor. Thread the motor wires through the

mount and front bulkhead as shown.

STEP 17

Now screw the motor in position as shown using the screws and

nyloc nuts supplied with the mount. Note that the motor mount is

offset from the centre line as shown to give the correct amount of

right thrust.

Mini Bossanova - Instr uctions

MOTOR

STEP 19

Slide the cowl in position. Re-fit the plywood spinner rings and

mount your propeller. Holding the cowl in place and ensuring a small,

even gap between the front of the cowl and spinner rings, mark the

positions of the cowl mounting screws. Pilot drill the holes then

attach the cowl using the four self tapping screws supplied.

Page 4

STEP 20

Locate the pre-painted spinner nosecone. Carefully trim away enough plastic to

allow it to fit onto the plywood spinner rings without touching the propeller. Now

glue the spinner nosecone onto the plywood rings ensuring it is square by turning

the propeller slowly. Use minimal glue for this joint is allow the spinner nose cone

to be removed when changing props.

STEP 21

Locate the pre-bent undercarriage and mounting screw, washers and retaining nut.

Ensure that the wheels spin freely on the axles.

STEP 22

Slide the undercarriage through the pre-cut slot in the underside of the fuselage as

shown. Place a washer on the mounting screw and push it through the pre-drilled

hole from the wing opening and through the loop in the top of the undercarriage. Fit

another washer, followed by the nut, and tighten.

STEP 24

Trim the covering away from the pre-drilled wing mounting bolt

access hole. You may wish to seal the edges of the film with a covering

iron. With the wing bolted in position, test the fit of the fairing.

Holding the fairing in place, mark its position on the wing then trim

the covering from the wing centre section inside the marked lines.

VERY IMPORTANT: Ensure that only the film is cut - not

the wing - as this will seriously weaken the structure.

STEP 23

Complete the installation of the undercarriage by screwing the lower hatch in place

with the self tapping screw supplied.

Mini Bossanova - Instr uctions

UNDERCARRIAGE

UNDERWING FAIRING

STEP 25

Mix up sufficient 5 minute epoxy and glue the wing fairing in position

using tape to hold it in position as the glue cures. Ensure that the

fairing aligns correctly to the fuselage and that the glue does not

come into contact with the fuselage. Any excess epoxy can be wiped

from the model before it cures using methylated spirit or methanol.

Page 5

STEP 26

Mount your rudder and elevator servos in place between the two servo bearers at

the rear of the fuselage's canopy opening. Note that both should be fitted with their

outputs towards the front of the model. Pilot drill the bearers and install the servos

using the screws supplied with your radio.

STEP 27

Trim the servos' output arms as shown, then locate the elevator and rudder pushrod

wire. Slide a nylon keeper on each wire, then form a 90° bend 5mm from the end.

Connect the pushrods to the servo output arms and slide the wires into their pre-

fitted tubes.

STEP 28

Fit a pushrod connector to the rudder and elevator control horns.

Aligning each with their hinge lines, pilot drill and cyano them in place

- looking from the rear, the rudder horn is fitted on the left hand side

of the rudder and the elevator horn is fitted on the underside of

the right hand elevator. With the servos centred and the rudder and

elevator level, tighten the pushrod connectors' screws.

STEP 30

Temporarily slide your Li-Po battery in position in front of the receiver. Dense foam

receiver packing can be used to retain it place once the balance point has been

checked. To complete the model, fit the canopy by inserting its locating dowel in the

pre-drilled bulkhead then lowering into place until the pre-fitted magnet snaps it

closed. Simply lift up the rear of the canopy and slide backwards to remove.

STEP 29

To complete the radio installation, mount your receiver to the rear of the balsa radio

tray then connect and mount your ESC to the fuselage side next to the receiver. Use

double sided foam tape or velcro for each. If using a switch, mount it in the radio

bay too. Drill a small hole in the rear fuselage deck behind the canopy for your aerial

to exit. Fix the free end of the aerial to the fin using tape, a band or pass through a

drilled hole.

COMPLETING THE RADIO INSTALLATION

Mini Bossanova - Instr uctions

• RUDDER SERVO

ELEVATOR SERVO •

Page 6

Mini Bossanova - Instr uctions

CONTROL THROWS

For initial flights, we recommend the following control throws

- all measured from the widest point of the control surface:-

Elevator: 30mm up

30mm down

Rudder: 50mm left

50mm right

Ailerons: 40mm up

40mm down

Mixing: Elevator to flap mix can be used with the ailerons moving

50% of their total movement when full elevator is applied.

Exponential: We recommend 50% exponential on the ailerons

and 20% exponential on the elevator. For Futaba radios, these

are negative figures - please check with the instructions supplied

with your radio for guidance.

Once comfortable with the Mini Bossanova the control throws

can be increased for 3D flying.

POWER SYSTEM

The Mini Bossanova can accept a variety of power systems, but

the following has proven to be a very successful combination:

M-XTRA2826/15 XTRA 2826/15 Brushless Motor

P-XTRA-16BL XTRA 16Amp Brushless Speed

Controller

O-IM3S1P130020C Impulse Power 11.1v (3 cell) 1300mAh

Li-Po Battery Pack

E-LP10047 APC 10 x 4.7" Slow Fly Propeller

BALANCING THE MODEL

The Centre of Gravity position should be 85mm back from the

leading edge measured at the root of the wing. Support the

completed model at this point and move the Li-Po battery as

necessary to achieve a slightly nose down attitude. A model that

is not correctly balanced will not perform as it should and, at

worst, be unstable or unflyable, leading to damage to the model

or injury to yourself or others. Do not miss out this step in

completing your Mini Bossanova! Once happy with the balance

point, mark the position of the Li-Po battery and use dense foam

packing to ensure that it cannot move backwards or forwards

in flight.

PRE-FLIGHT CHECKS

• Completely charge your transmitter and Li-Po flight battery

before flying.

• Carefully check your model over to ensure that all screws are

tight and everything is well bonded.

• Double-check the Mini Bossanova’s Centre of Gravity

position.

• Check the control surfaces for both the correct throw and

direction. Ensure that each surface moves freely, without any

binding.

• Check the receiver aerial is fully extended.

• Ensure the wing bolt is tight.

• Ensure the Li-Po battery is securely mounted and cannot move

in flight.

Before every flying session you MUST check the control range

of your R/C system.

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

propeller. With the transmitter and model switched on, retract

the transmitter aerial and walk away moving the elevator stick

on the transmitter.

Run the motor to full power and repeat the elevator 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.

IMPORTANT

The Mini Bossanova is a highly aerobatic model capable of

extreme 3D manoeuvres. When fitted with a powerful brushless

motor, it offers almost unlimited performance. However, it is not

designed to be flown fast and should be fitted with the correct

choice of 3D ‘paddle’ prop having broad blades and very low

pitch. Ensure that your choice of micro servo can handle the

large control surfaces.

Always fly responsibly and safely.

Distributed to your local model shop by:

Ltd., 241 Green Street, Enfield, EN3 7SJ. United Kingdom..

Made in China

Ripmax mini Bossanova User manual

Brand: Ripmax

Model: mini Bossanova

Category: Toys

Type: User manual

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Ripmax mini Bossanova User manual

Ripmax mini Bossanova User manual

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