GRAUPNER CHIP Instruction Manual

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Order No. 4564
BUILDING INSTRUCTIONS
CHIP
For electric motor and three 850 mAh LiPo cells
The model requires a three-function HoTT radio control system

GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
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Please be sure to observe the Safety Notes in the Appendix of these operating instructions. If
you ever pass the model on to another person, the complete operating instructions must be
included with it.
Introduction
The CHIP is an ideal beginner’s hotline model, which offers maximum flying pleasure
for minimum building effort. The model is highly pre-fabricated, but the procedures
described in the following instructions must be carried out with the greatest care to
ensure that the model flies safely and well. The aircraft’s all-up weight must not
exceed 600 g.
RC system accessories
The following items are required in order to operate the model.
MX-12 2.4 GRAUPNER HoTT COMPUTER SYSTEM Order No. 4754
DES 261 BB servo (two required) Order No. 7903
ULTRAMAT 8 Order No. 6411
Transmitter charge lead Order No. 3022
Charge lead with BEC connector Order No. 3037
COMPACT FLY 15 BEC speed controller Order No. 7220
GRAUPNER LiPo flight battery, 3/850 11.1 V / 850 mAh Order No. 7621.3BEC
Essential tools and adhesives
Balsa knife Order No. 980
Screwdriver
Abrasive paper, 320-grit
Side-cutters
Mini flat-nose pliers
Open-ended spanner, 8 mm A/F, allen key, 1.5 mm A/F, allen key, 2 mm A/F
Paper scissors
Adhesive tape
Soldering iron, solder, heat-gun
Cyano-acrylate glue (“cyano”) Order No. 5821
Cyano activator Order No. 953.150
Building instructions
Please read right through these building instructions before you start construction, to
ensure that you have a clear understanding of the sequence of operations required.
Lay out all the components, tools and adhesives for each stage before you start
work, and prepare the model parts as described in the building instructions. When
assembling the components always work on a clean, smooth surface, or cover the
workbench with a layer of soft foam. Use cyano-acrylate and activator as adhesive.
We recommend that you apply the glue to one joint surface, and spray activator on
the mating surface. Take particular care to avoid adhesive running onto your hands
or the model’s surface; immediately wipe off any excess glue using paper towel.
Caution: cyano-acrylate must never come into contact with body parts. Take
particular care to avoid it getting in your eyes; we therefore recommend that
you wear goggles when handling cyano. Store the adhesive well out of the
reach of children. For safety reasons we recommend that you only use the
adhesive stated above.

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Fuselage and tail
Use a balsa knife to continue the channel for the reinforcement (2) right through to
the end of the fuselage. Tip: use the balsa knife just to cut the side slits, then push
out the scrap SOLIDPOR foam using the strip of spruce (2). Fit the spruce strip and
ensure that it rests completely on the bottom of the fuselage. This is important,
otherwise it will not be possible to push the fin (4) fully into place.
Locate the lug at the front face of the fuselage produced by the moulding process.
Remove this to provide clearance for the power leads of the INLINE 400 electric
motor.

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Cut a 10 x 6 mm opening at the bottom of the fuselage for the servo leads.
Push the strip of spruce (2) through to complete the opening.
Glue the fuselage reinforcement (2) exactly central in the fuselage (1), and press it
into place. Check carefully that the fuselage is not distorted when you do this.
Roughen the surface of the captive nut (3) using abrasive paper, then glue it in place
using plenty of adhesive. When the glue has set hard, fit the retaining screw (12) in
the nut and pull on it to check that the joint is strong enough.
Use the balsa knife to cut the elevator snake outer sleeve (6) to a length of 440 mm,
and press it into place as shown in the picture. Glue the elevator snake sleeve (6) to
the side of the fuselage reinforcement (2) at the front.

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Cut off a 2 mm wide wedge from the fin (4), sand the joint surface of the rudder
snake outer sleeve (5) and glue it in place. Take care to glue the snake sleeve inside
its channel only. Don’t glue the horn (9) in place at this stage.
Glue the snake sleeve (5) to the underside of the fin at the front. Ensure that it ends
flush with the fin; it must not overlap the fuselage reinforcement (2) later, as this
would make it impossible to insert the fin (4) completely.
Temporarily slide the prepared fin into the fuselage; if there is a gap between the
fuselage and the fin, squeeze the fuselage sides together at the top.
The fin can now be glued in place. Caution: don’t use activator for this joint,
otherwise the parts will stick together before you have a chance to position
them correctly.
Apply cyano to the spruce strip (2) and the inside of the fuselage, then slide the fin
briskly into place. Ensure that it ends flush with the top of the fuselage, and makes
contact at the tail end.

GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
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Remove two strips about 1 mm wide at both ends of the elevator to allow it to move.
Deflect the elevator up and down several times to free up the hinge line.
Glue the screw sleeve (11) in the hole in the tailplane. Caution: do not use
activator when gluing the sleeve in place. Fix the tailplane to the fuselage using
the screw (12), holding the rudder to one side to allow screwdriver access.
Fit the screws (14) in the inserts (13), then glue the inserts in the openings, pressing
them in fully using the screws. Carry out a pull-test when the glue has set hard.
The picture shows the motor mounting components (26) to (30), and the 2 mm A/F
allen key required for tightening the cheesehead screws (30). Carefully cut out the
individual plywood parts (26) to (28) using the balsa knife.

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The photo shows the assembled motor mount; the plywood parts should initially be
fixed using only a little adhesive. Ensure that these components are not stuck to the
motor. Slide the INLINE 400 motor into the fuselage from the nose, then temporarily
fit the folding propeller on the shaft. The retaining nut (35) is tightened using an 8 mm
A/F open-ended spanner, but not until a later stage.
Assemble the folding propeller as shown in the exploded drawing.
The picture shows the fuselage nose with the motor correctly installed; there should
be about 1 mm clearance between spinner and fuselage all round. Remove the
propeller again, and glue the motor bulkhead (26) to the fuselage from the front.

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Apply cyano all round the joint between the motor bulkhead (26) and the fuselage (1),
then apply more glue to all the joints between the plywood parts and the inside of the
fuselage, working carefully and thoroughly. Place the canopy (18) on the fuselage,
and fit the retaining screw (19) through the front slot in the moulding to secure it.
Cut out the Velcro tape (20) and stick it to the inside of the canopy. The mating piece
of Velcro tape (21) is stuck to the wing (15) later to complete the canopy retainer.
The wing
Glue the CFRP tube (17) in the channel in the wing using plenty of cyano and
activator. Wipe off excess adhesive immediately using a paper towel.
We strongly advise wearing goggles for the next procedure.
Glue the screw sleeves (16) in the top of the wing. Caution: press them into place
briskly, and do not use activator.
These two steps complete the work required on the wing.

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Installing the electric power system and receiving system
The illustration shows the power system prepared ready for soldering. Shorten the
speed controller leads by around 15 mm, strip the insulation from the cut ends, and
twist the wire strands together. Caution: check that the motor operates correctly
before shrinking the heat-shrink sleeves over the soldered joints. Viewed from the
tail, the correct direction of rotation for the propeller is to the right (clockwise). If this is
not the case, swap over any two of the wires. Finally shrink the heat-shrink sleeves
over the soldered joints when you are confident that all is well.
The photo shows how the speed controller is attached to the left-hand fuselage side
using Velcro tape (22) and (23). Note that the motor should be installed with the
power wires on the same side as the speed controller.
The illustration shows the rudder servo prepared for installation, and the 1.5 mm A/F
allen key required to tighten the grubscrew (44). In the interests of clarity, the servo

GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
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output lever is shown mounted on the servo at 90°. Please note that the effective
length of the output arm should be no more than 8 mm, otherwise the two output
arms will foul each other.
Tighten the self-locking nut (43) just to the point where the pushrod connector (42)
swivels smoothly, but without slop.
The servos and pushrods (7) and (8) can now be fitted temporarily. Connect the
horns (9) to the pushrods. Caution: if you wish to obtain the largest possible control
surface travels, the pushrods should be connected to the innermost holes, and not as
in the picture. Set the servos to centre using a servo tester or the RC transmitter.
When you are confident that everything fits properly, fix the servos to the fuselage
with a drop of glue applied to the mounting lugs only; glue the horns (9) in place at
the same time. Hold the rudder and elevator at neutral (centre), then tighten the
grubscrews (44) to clamp the pushrods in the swivel connectors. Snip off the excess
length of the pushrods (5) and (8) using side-cutters. Please note that the rudder
servo lead should be passed through on the underside.

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Connect the servos to the receiver as follows: connect the rudder servo to socket 2,
the elevator servo to socket 3, and the speed controller to socket 1. Tape the servo
leads to the underside of the receiver as shown in the photo, to prevent them fouling
the servo output arms.
Secure the receiver with pieces of Velcro tape (45) and (46) as shown in the picture.
Route the two receiver aerials aft, and secure them with adhesive tape.
The decals
Cut out the individual decals, apply them to the model in the arrangement shown in
the kit box illustration, and press them firmly into place.
Balancing
The Centre of Gravity coincides with the position of the CFRP tube, i.e. 63 mm aft of
the wing root leading edge. You may need to adjust the position of the flight battery
to set the correct balance point; fix it in place with Velcro tape (24) and (25) when you
are satisfied. Check the CG by supporting the model under the wing roots on two
fingertips: it should then balance level.
Checking the working systems, control surface travels
The photo shows the model with the LiPo battery secured. Caution: connecting the
BEC connectors - as shown in the picture - switches the receiving system on. It

GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
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is essential to set the throttle stick (function 1) on the transmitter to the “motor
stopped” end-point before you complete this connection.
Give the batteries in the transmitter and the LiPo flight pack a full charge, then check
all the working systems from the transmitter: when you move the right-hand stick
(function 2) to the right, the rudder should also deflect to the right. Pull the left-hand
stick (function 3) back, and the elevator should deflect up. If either control surface
works in the wrong “sense” (direction), reverse the corresponding servo using the
“Servo settings” menu at the transmitter. If you have used the recommended servo
output arm lengths, the following maximum travels are possible: rudder 40 mm per
side, measured at the bottom edge; elevator 25 mm up and down, measured at the
centre. For the first few flights set the control surface travels to 50% of these values.
Test-flying
Assemble the model completely, and check that the control surfaces are exactly at
neutral (centre) when the trims are central. Wait for a day with little or no breeze for
the initial test-flight. The ideal flying site is a large, grassy field devoid of obstacles.
Start the motor, and give the aeroplane a hand-launch directly into any wind;
the correct launch speed is obtained by trotting forward for a few paces. Keep
the model flying straight initially, applying minor corrections as required. Fine-tuning
is carried out using the trim buttons below and adjacent to the sticks. Only use small
control commands at first, keeping the model flying straight or in shallow turns only.
Important: a brief application of rudder is all that is required to initiate a turn;
return the stick to centre as soon as the model banks over. Holding the rudder
too far or for too long will force the model into a spiral dive. Carry out the
landing approach exactly into wind with the motor switched off. Before touch-down,
apply gentle up-elevator to reduce the model’s speed. Always land directly into wind.
If you have sufficient flying experience, you can increase the control surface travels.
Due to the aircraft’s low inertia, lively flight manoeuvres are possible if the maximum
control surface travels are set. However, the model is equally capable of circling
smoothly in thermals with the motor switched off.
Here at Graupner Modellbau we all wish you many fine flights with your
>CHIP<
Specification - CHIP
Wingspan approx. 1050 mm
Overall length approx. 810 mm
Wing section RG 14 mod.
Tailplane section NACA 009
Wing area 17.1 dm²
Tailplane area 3.7 dm²
Total surface area 20.8 dm²
All-up weight approx. 500 g
Total surface area loading approx. 24 g/dm²

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Parts List - CHIP
Part
No. Description No. off Material Dimensions
in mm
1 Fuselage 1 SOLIDPOR Ready made
2 Fuselage reinforcement 1 Spruce 450 x 6 x 6
3 Captive nut 1 Steel M4, ready made
4 Fin 1 SOLIDPOR Ready made
5 Rudder snake outer sleeve 1 Nylon 1.9 / 0.9 Ø x 390
6 Elevator snake outer sleeve 1 Nylon 1.9 / 0.9 Ø x 440
7 Rudder pushrod 1 Steel 0.8 Ø x 450
8 Elevator pushrod 1 Steel 0.8 Ø x 520
9 Control surface horn 2 ABS Ready made
10 Tailplane 1 SOLIDPOR Ready made
11 Sleeve 1 Aluminium Ready made
12 Countersunk screw 2 Nylon M4 x 16
13 Insert 2 Nylon M4 x 10
14 Countersunk screw 2 Nylon M4 x 30
15 Wing 1 SOLIDPOR Ready made
16 Sleeve 2 Aluminium Ready made
17 CFRP tube 1 CFRP 6 / 4 Ø x 390
18 Canopy 1 ABS, carbon-look Ready made
19 Self-tapping screw 1 Steel 2.9 Ø x 16
20 Velcro tape, fine 1 Nylon 12 x 12 x 2
21 Velcro tape, coarse 1 Nylon 25 x 15 x 2
22 Velcro tape, fine 1 Nylon 25 x 25 x 2
23 Velcro tape, coarse 1 Nylon 25 x 25 x 2
24 Velcro tape, fine 1 Nylon 40 x 25 x 2
25 Velcro tape, coarse 1 Nylon 40 x 25 x 2
26 Motor bulkhead 1 Beech plywood Laser-cut, 2.2
27 Motor guide 3 Beech plywood Laser-cut, 2.2
28 Upper motor guide 1 Beech plywood Laser-cut, 2.2
29 Washer 2 Steel 2.5 / 7 Ø x 0.8
30 Cheesehead screw 2 Steel M2.5 x 5
31 Spinner backplate 1 ABS Ready made
32 Taper collet sleeve 1 Aluminium Ready made
33 Taper collet 1 Aluminium Ready made
34 Washer 1 Steel 5.3 / 10 Ø x 1
35 Nut 1 Steel M5
36 Propeller blade 2 Nylon Ready made
37 Mushroom-head screw 2 Plated steel M2 x 12
38 Spinner cap 1 ABS Ready made
39 Countersunk screw 1 Plated steel M2 x 12
40 Electric motor 1 Metal / plastic INLINE 400 11.1 V
41 Heat-shrink sleeve 3 Plastic 4 Ø x 15
42 Swivel pushrod connector 2 Plated steel M2 / 4.5 A/F
43 Self-locking nut 2 Nylon M2
44 Grubscrew 2 Steel M3 x 3
45 Velcro tape, fine 2 Nylon 25 x 10 x 2
46 Velcro tape, coarse 2 Nylon 25 x 10 x 2
47 Decal 16 Self-adhesive film Oversize

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Replacement parts (not included)
Canopy Order No. 6297.1
Fuselage Order No. 6297.2
Wing Order No. 6297.3
Tailplane and fin Order No. 6297.4
Decal sheet Order No. 4564.14
Folding propeller, complete Order No. 1337.16.8
Spinner cap Order No. 1308.1
Propeller blades Order No. 1336.15.8
INLINE 400 11.1 V electric motor Order No. 6603
Safety Notes
You must have valid third-party insurance before flying your model aircraft; this is now a legal
requirement.
Please read right through the building and operating instructions before attempting to fly the
model for the first time. You alone are responsible for the safe operation of your radio-
controlled model. Young persons should only be permitted to build and fly this model under
the instruction and supervision of an adult who is aware of the hazards involved in this activity.
In legal terms our models are classed as aircraft, and as such are subject to legal regulations
and restrictions which must be observed at all times. Our brochure “Modellflugrecht,
Paragrafen und mehr” (Model Aviation Law, Legal Requirements and more) is available under
Order No. 8034.01, and contains a summary of all these rules. Your local model shop should
have a copy which you can read.
Be sure to use only those parts included in the kit, together with other genuine Graupner
accessories and replacement parts as recommended expressly by us. Even if you change a
single component you can no longer be sure that the system will work reliably, and such
changes also invalidate your guarantee.
Avoid short-circuits and reversed polarity.
The high energy density of rechargeable batteries involves a risk of fire and even explosion.
A radio-controlled model aircraft can only work properly and fulfil your expectations if it is built
very carefully and in accordance with the building instructions. If you wish to avoid injuring
people and damaging property it is essential to be careful and painstaking at all stages of
building and operating your model. Successful model flying is only possible with suitable
training and plenty of practice.
As manufacturers we are not in a position to influence the way you build and operate your RC
model aircraft, and for this reason we deny all liability. All we can do is expressly point out the
hazards involved in this activity.
We suggest that you ask an experienced model flyer for help, or join a model club or flight
training school. Your local model shop and the specialist magazines are excellent sources of
information. If at all possible, it is always best to join a club and fly at the approved model
flying site.
Adhesives and paints contain solvents which may be hazardous to health under certain
circumstances. Read and observe the notes and warnings supplied by the manufacturer of
these materials.
The operator of the model must be in full possession of his or her bodily and mental faculties.
As with car driving, operating a model aircraft under the influence of alcohol or drugs is not
permissible under any circumstances.
If there are passers-by or spectators at your flying site, make sure that they are aware of the
dangers inherent in your activity before you start the motor, and insist that they keep a safe
distance away.

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Always keep a safe distance away from people and objects when flying; never fly low over
people’s heads, and never fly directly towards them.
Radio-controlled models should only be flown in “normal” weather conditions, i.e. a
temperature range of -5°to +35°C. More extreme temperature s can lead to changes in battery
capacity and material characteristics, weakened glued joints and other unwanted effects.
All model flyers should behave in a way that minimises the danger to people and property.
Never act in any manner which will disturb other flyers and jeopardise safe, orderly flying at
the site.
Never operate your model aircraft close to high-tension overhead cables, industrial sites,
residential areas, public roads, school playgrounds or sports grounds etc.
Pre-flight checks
Check that the radio control system works correctly and at full range before every flight: switch
on the transmitter and the receiving system, and extend the transmitter aerial to its full length;
walk away from the model, and check that all the control surfaces work smoothly and
immediately at an appropriate distance; check also that they deflect in the correct “sense” in
relation to the stick movements.
If you are a relative beginner to this type of model flying, we recommend that you enlist an
experienced model pilot to help you check and test-fly the model.
Don’t ignore our warnings. They refer to materials and situations which, if ignored, can result
in fatal injury or permanent damage.
Propellers and other rotating parts which are powered by a motor constitute a permanent
hazard and represent a real risk of injury. Don’t touch them with any part of your body. For
example, a propeller spinning at high speed can easily cut your finger badly.
Keep well clear of the rotational plane of the propeller. You never know when some part may
come loose and fly off at high speed, hitting you or anybody else in the vicinity, and possibly
causing serious injury. Never touch the revolving propeller with any object.
Ensure that it is impossible for any object to stall or block the propeller.
Every time you intend to operate your model check carefully that it and everything attached to
it (e.g. propeller, RC components etc.) is in good condition and undamaged. If you find a fault,
do not fly the model until you have corrected it.
Never leave your radio control system unguarded, as another person might pick it up and try to
use it.
Do not switch on the electric motor unless you are sure that there is nothing in the rotational
plane of the propeller. Never attempt to stop the spinning propeller. Electric motors with the
propeller attached should only be run when firmly mounted.
If you are to fly your model safely and avoid problems, it is essential that you are aware of its
position and attitude throughout each flight - so don’t let it fly too far away! If you detect a
control problem or interference during a flight, immediately land the model to prevent a
potential accident. Models must always give way to full-size aircraft. Take-off and landing
strips should be kept free of people and other obstacles.
Your RC system can only work reliably if the batteries are kept fully charged.
Never use batteries which are hot, faulty or damaged. At all times heed the instructions
provided by the battery manufacturer.

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Before each flight check that all functions on the model aircraft are working correctly, and that
the radio control system is in good order and operating at full range.
Note that the motor control (throttle) function on the transmitter must always be moved to the
OFF position as the first stage in preparing for a flight. Check that the control surfaces follow
the movement of the transmitter sticks:
After every session, remove the battery from the model and store it in the discharged state in a
location out of reach of children, at a temperature of around +5º to +25ºC.
Please don’t misunderstand the purpose of these notes. We only want to make you aware of
the many dangers and hazards which can arise if you work carelessly or irresponsibly. If you
take reasonable care, model flying is a highly creative, instructive, enjoyable and relaxing
pastime.
Liability exclusion
We as manufacturers have no control over the way you build and operate your RC model
aircraft, nor how you install, operate and maintain the associated components, and for this
reason we are obliged to deny all liability for loss, damage or costs which are incurred due to
the incorrect use of our products or due to incompetent behaviour on the part of the user, or
which are connected with such operation in any way.
Unless otherwise prescribed by binding law, the obligation of the GRAUPNER company to pay
compensation, regardless of the legal argument employed, is limited to the invoice value of
that quantity of Graupner products which was immediately involved in the event in which the
damage occurred. This does not apply if Graupner is deemed by statutory law to have
unlimited liability due to wilful or gross negligence.
Environmental Protection Notes
The presence of this symbol on a product, in the user instructions or the
packaging, means that you must not dispose of that item, or the electronic
components contained within it in the ordinary domestic waste when the
product comes to the end of its useful life. The correct method of disposal is
to take it to your local collection point for recycling electrical and electronic
equipment.
Individual markings indicate which materials can be recycled and re-used. You can
make an important contribution to the protection of our shared environment by re-
using the product, recycling the basic materials or re-processing redundant
equipment in other ways.
Dry cells and rechargeable batteries must be removed from the device and taken
separately to a suitable battery disposal centre.
If you don’t know the location of your nearest disposal centre, please enquire at your
local council office.