GRAUPNER 13401.SD, 13401 User Manual
GRAUPNER/SJ GmbH. Henriettenstr.96, KG D-73230 KIRCHHEIM/TECK GERMANY
English
INNOVATION & TECHNOLOGY
HoTTrigger
Manual
2014/04/10
No.:13401
No.:13401.SD
English
2
Contents
Foreword ......................................................................3
Model summary description..........................................3
Approved usage ...........................................................3
Specication .................................................................3
Parts List ......................................................................4
Kit contents ...................................................................5
Recommended accessories .........................................6
Recommended accessories - electric motor ................6
Adhesive .......................................................................6
Tools required ............................................................... 6
Symbols and their meaning ..........................................7
Warnings and safety notes ...........................................8
Manufacturer‘s declaration on behalf of GRAUPNER/
SJ GmbH ....................................................................12
Assembling the model ................................................13
Removing covering lm ..............................................13
Servo installation - general .........................................14
1. Information on installing servos ................................. 14
2. Servo installation ....................................................... 14
3. Fitting the rubber grommets ...................................... 14
4. Fitting the tubular brass spacers ............................... 14
5. Extending the servo lead ........................................... 15
6. Parking the servo leads ............................................. 15
Canopy .......................................................................16
Gluing the point-hinges ..............................................16
1. Information on gluing the point-hinges ...................... 16
2. Preparing the point-hinges ........................................ 16
3. Applying glue to the hinge holes ................................ 17
4. Inserting the point-hinges .......................................... 17
Installing the tailplane .................................................19
1. Aligning the tailplane ................................................. 19
2. Removing the lm from the joint surfaces ................. 20
3. Removing the lm from the joint surfaces ................. 21
4. Gluing the tailplane in place ...................................... 21
5. Preparing the elevator joiners ................................... 22
6. Gluing the elevator joiners ......................................... 22
7. Attaching the elevators .............................................. 23
Attaching the rudder to the n ....................................25
Attaching the rudder .................................................25
Installing the tailwheel assembly ................................26
Tailwheel bracket assembly ........................................... 26
4. Installing the tailwheel ............................................... 27
Installing the tailwheel bracket ...................................... 28
Tailwheel steering system ............................................. 28
Installing the undercarriage ........................................29
1. Installing the main undercarriage units ...................... 29
2. Preparing the wheel spats ......................................... 30
2. Fitting the wheel axles ............................................... 30
Installing the horns .....................................................32
Preparing the control horns ........................................... 32
Preparing the pushrods ................................................. 33
Preparing the servo output arms ................................... 34
Attaching the pushrods to the servo output arms .......... 34
Aileron and elevator ...................................................36
Installing the servos ....................................................... 36
Installing the servo output arms .................................... 37
Adjusting the pushrods .................................................. 37
Gluing the control surface horns ................................... 38
Rudder linkage ..........................................................39
Attaching the rudder cables ........................................... 39
Installing the rudder output arm ..................................... 41
Installing and replacing the batteries ..........................46
Installing the receiver..................................................47
General information ....................................................... 47
Wing root connection ..................................................... 47
Securing the receiver .................................................... 47
Aerial deployment .......................................................... 47
Installing the electric motor .........................................48
Preparing the cruciform motor mount ............................ 48
Fitting the stand-off pillars ............................................. 49
Installing the motor ........................................................ 49
Soldering the sockets to the speed controller ............... 50
Installing the speed controller .....................................51
Installing the spinner OMA-5020-490 .........................52
Installing the Cowl ......................................................54
Drilling the holes for the cowl retaining screws ............. 54
Applying the decals ....................................................56
Information on applying decals ...................................... 56
Slitting the decals over a hinge line ............................... 57
Model settings ............................................................58
Centre of Gravity: .......................................................... 58
Basic control surface travels: ........................................ 58
Attaching the wings to the fuselage ............................58
Using Planejama (aeroplane nightshirt) .....................59
Care and maintenance ...............................................60
Environmental protection notes ..................................60
Maiden ight ...............................................................60
Notes ..........................................................................61
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INNOVATION & TECHNOLOGY
Foreword
Many thanks for your decision to purchase the HoTTrigger, which is an aerobatic model of conventional all-wood construction. The HoTTrigger is a great aeroplane for modellers who already
have experience with powered models and wish to expand their skills, but it is also ideal for
more advanced pilots. The model is easily capable of standard and 3D aerobatics, and offers an
excellent performance. This means that you have acquired an aircraft which is ideal for practi-
sing aerobatic manoeuvres as well as simple fun ying, and all with ease of handling and little
effort. The model is very easy to rig: all you have to do is attach the wings to the fuselage using
two screws. The generous canopy opening ensures easy handling, and makes the model very
practical for everyday ying. The HoTTrigger can be completed with an electric power system
or a glow motor, and is prepared as standard for both versions. All you have to do is decide on
your preferred type of power, and acquire the appropriate accessories.
Attention!
It is essential to read right through the instructions before assembling and ying the model.
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Approved usage
The HoTTrigger 1500 is designed to be used as a model aircraft. It is not suitable for any other
purpose.
This aerobatic machine is part of the new range of GRAUPNER/SJ all-wood model aircraft. These models are of particularly high quality, and have been developed and tested for you in-house.
Installation of the airborne RC components is simple and quick thanks to the very large fuselage
opening. To prepare the model for the air all you have to do is install the RC components and
power system, and carry out a few minor gluing and assembly procedures.
Model summary description
Wingspan approx. 1500 mm
Length approx. 1430 mm
Overall height approx. 360 mm
All-up weight approx. 3200 g
Specication
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Parts List
Pos. Description Quant. Material Dimensions in mm
1
Point-hinge 19 Plastic Ø 3 x 49
2
Fuselage 1 Wood
3
Tailplane 1 Wood
4
Elevator joiner 2 GRP 120 x 10 x 2
5
R.H. elevator 1 Wood
6
L.H. elevator 1 Wood
7
Rudder 1 Wood
8
R.H. wing panel 1 Wood
9
L.H. wing panel 1 Wood
10
R.H. aileron 1 Wood
11
L.H. aileron 1 Wood
12
Grubscrew 2 Steel M 3 x 3
13
Collet 1 Steel Ø 8 x 5,5 x Ø 2,5
14
Wire tailwheel unit 1 Steel Ø 2,5
15
Tailwheel bracket 1 Steel ca. 50 x 10 x 2
16
Tailwheel steering rod 1 Steel/alum.
17
Tailwheel 1 Plastic Ø 27 x 13 x 2,5
18
Mushroom-head allen screw 6 Steel M 3 x 12
19
Ball-link 11 Plastic M 2
20
Main undercarriage unit 1 Aluminium
21
Cheesehead allen screw 2 Steel M 3 x 12
22
R.H. wheel spat 1 GRP
23
L.H. wheel spat 1 GRP
24
Cheesehead allen screw 2 Steel M 4 x 40
25
Spacer ring 2 Wood Ø 16 x 5 x 2
26
Main wheel 2 Plastic Ø 50 x 19 x 4
27
Self-locking nut 4 Steel M 4
28
Washer 2 Steel Ø 16 x 5 x 1
29
Control surface horn 10 GRP
30
Cheesehead allen screw 13 Steel M 2 x 10
31
Self-locking nut 13 Steel M 2
32
Aileron pushrod 2 Steel M 2 x 70
33
Elevator pushrod 1 Steel M 2 x 85
34
Ring-screw 4 Brass M 2 x 20
35
Rudder servo output arm 1 GRP
36
Crimp sleeve 4 Aluminium 5 x 3 x 4
37
Linkage cable 1 Steel Ø 0,5 x 1500
38
Cheesehead allen screw 4 Steel M 5 x 15
39
Drilling template 4 Felt 100 x 15 x 0,2
40
Cowl 1 GRP
41
Canopy 1 Plastic
42
Wing joiner tube 1 CFRP Ø 15 x 550
43
Retaining screw 1 Plastic 1/4“ x 50
44
Planejama (protective bags) 1 set Textile
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INNOVATION & TECHNOLOGY
Kit contents
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Recommended accessories
Adhesive
Tools required
Quant. Description No.
1 Gr. HoTT mx-16 8-channel computer system 33116
4
DES 708 BB MG servo 7946
1 GR 16 receiver 33508
2 100 mm extension lead 3935.11
1 320 mm extension lead 3935.32
1 White plastic spinner, 57 mm Ø 1112.57
1 Hook-and-loop strap, length 320 mm 1587
1
DES CFRP heavy-duty servo output arm 7907.2
1 Low-viscosity cyano-acrylate (thin cyano) 5822
1 Activator spray 953.150
1 UHU-Schraubensicher (thread-lock uid) 952
1 UHU-Plus endfest 300 (slow-setting epoxy) 950.43
1 UHU-schnellfest (fast-setting epoxy) 962
1 Silicone damper oil, 150 cps / 60 ml 95401
Description No.
Scalpel 982
Water pump pliers
Scissors
Cross-point screwdriver
1.2 / 1.9 / 5 / 6.4 mm drill bits
14 mm A/F open-ended spanner
4.5 mm socket spanner
1 O.S. OMA-5020-490 6626
1 Brushless Control +T 70 G 3,5 33770
1 V-MAXX 5/4200 18.5 V G3.5 LiPo, 45C 9740.5
1 Electric propeller, 15 x 8” 1326.15x8
2 Hook-and-loop tape, 100 mm 3368.1
1 Stand-off pillar, length 44.5 mm 2269.44,5
Recommended accessories - electric motor
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INNOVATION & TECHNOLOGY
Symbols and their meaning
Attention!
This symbol alerts you to the following notes which the user must observe. Neglecting this
information may have an adverse effect on the system’s proper function and the safety of the
operator.
Warning!
This symbol alerts you to prohibited actions which the user must always observe. Neglecting
these warnings may have an adverse effect on the system’s proper function and the safety of
the operator.
Note regarding adhesives!
This symbol calls attention to the particular adhesive which is to be used in the following procedure in order to obtain a sound joint, or to secure the components or screws.
Care and maintenance!
This symbol calls attention to notices about care of the model which must absolutely be observed to ensure its long service life.
Note!
This symbol alerts the user to information which must always be observed in order to ensure
the safe operation of the device.
Tip!
This symbol alerts you to hints and tips during the model’s construction which help to avoid
problems and potential damage, and provide information on solving possible problems.
Warning: hot surfaces!
This symbol calls attention to injury risks which arise if you touch hot surfaces. Neglecting
these warnings may lead to serious injury.
Rotating power unit!
This symbol calls attention to the injury risks associated with operating a propeller which must
absolutely be observed by the user! Any disregard for the adjacent notices can lead to imbalance of the propeller, can se-verely damage the model and can produce most severe injuries
for persons in the vicinity as a consequence of hurled parts.
This symbol calls attention to the injury risks associated with operating a propeller which must
absolutely be observed by the user! Any disregard for the adjacent notices can lead to severe
injuries for the operator.
Inammable!
This symbol calls attention to the following information, which the user must always observe.
Neglecting these warnings incurs a risk of explosion and re.
Warning: toxic substances!
This symbol calls attention to the following information, which the user must always observe.
Neglecting these warnings incurs a risk of poisoning.
Disposal notes
This symbol calls attention to information regarding specic materials or products, which
must be observed when disposing of these items.
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Warnings and safety notes
Attention!
Never reach into a running propeller or attempt to hold the propeller by hand when it is operating. This leads to hand injuries. Rotational forces can readily cause the propeller to get out of
control.
Attention!
Never put objects/foreign materials into a running propeller. Always ensure that objects/foreign
materials can-not get into the propeller when it is running. If this does happen, the propeller‘s
sudden imbalance can cause heavy damage to the model. Persons in the vicinity can be severely injured by parts hurled through the air.
Attention!
Never dwell in front or back of a propeller. Improper assembly or unforeseen circumstances
can cause the propeller to come off of its shaft. Stop the propeller if unusual noises are heard.
Warning!
The propeller must be securely attached. Do not direct the propeller toward persons or animals, do not test the propeller in the hand. Never dwell in front of a propeller. Unforeseen
circumstances can cause the propeller to come off of its shaft. Persons in the vicinity can be
severely injured by parts hurled through the air.
Warning!
Do not touch any part of the drive train (i.e. motor + propeller + shaft) while it is operating as
this can lead to injuries. Allow the motor, shaft, regulator and battery time to cool off after operation before touching any of these parts!
Warning!
Operating the model while under the inuence of medication, alcohol, drugs, etc. is forbidden.
Attention!
Any deviation from the model‘s instructions can have an effect on the model‘s functionality
and operational safety. This must be avoided under all circumstances.
Attention!
The operator of a RC model must be aware of the legal stipulations before putting a RC model
into operation because a RC model is subject to applicable laws. Applicable laws are always
to be followed in every case. In this respect, pay attention to the laws applicable in the given
country. Before operating the model for the rst time, check if your private liability insurance
provides coverage for RC models of this type. If this is not the case, obtain special liability
insurance coverage for RC models.
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This is a model that – together with appropriate accessories – can become a functional RC
model. GRAUPNER/SJ cannot monitor adherence to the assembly and operating instructions
for the model nor can GRAUPNER/SJ supervise the installation, operation or maintenance of
the model and its components. There-fore GRAUPNER/SJ accepts no liability whatsoever for
losses, damage or costs that arise from improper op-eration, improper behavior or which are
associated with same in any manner. Unless mandated by prevail-ing law, the obligation of the
GRAUPNER/SJ company to provide damage compensation arising from the use of the model,
regardless of the grounds, is excluded (this exclusion includes personal injury, death, damage to
buildings or structures as well as sales and business losses, consequential damage for busi-
ness inter-ruption or other direct and indirect consequential damages).
Total liability under all circumstances and in each case is limited to the amount actually paid for
this model.
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INNOVATION & TECHNOLOGY
Attention!
RC models are very demanding and potentially dangerous objects, and call for a high level of
knowledge and expertise from the operator, together with a sense of responsibility.
Attention!
Adhesives and paints contain solvents which can be injurious to health. It is important to heed
the manufacturer’s instructions and warnings.
Attention!
The model may only be operated with accessories which we recommend as otherwise functionality cannot be guaranteed.
Attention!
The commissioning and operation of the model is solely at the risk of the operator. Only cautious, considered handling during operation of the model will prevent personal injuries and
property damage.
Attention!
This model is not suitable for children under 16 years of age.
Attention!
Pay attention to the potential dangers associated with the tools that are used.
Attention!
Comply with the recommendations and notices associated with the remote control set and
accessories.
Attention!
Before operating the model, check it for reliable response to the remote control unit and all
plug-in connections for secure connection.
Attention!
Never attempt to recharge any primary cell batteries used as a power supply. Only rechargeable (i.e. secondary cell) batteries may be charged.
Attention!
The remote control unit‘s effective range must be checked prior to operation of the model. To
check this, switch the model on then walk with it away from the transmitter as far as about 100
m while a helper operates various controls on the transmitter. At this distance it must be possible to operate all model functions without any problem.
Attention!
Pay attention to radio devices or transmitters which could substantially affect the model‘s
functionality. Try to ensure that such devices are not operated in the vicinity while the model is
being operated.
Attention!
Batteries must never be short-circuited or come into direct contact with water.
Attention!
Never endanger yourself or others in an attempt to recover the model.
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Attention!
Take care with loose clothing such as scarves, loose shirts etc. Flapping cloth can easily be
sucked into the area of the propeller and then get tangled in the blades.
Attention!
If there are passers-by or spectators at your ying site, make sure that they are aware of the
dangers inherent in your activity, and insist that they keep a safe distance away (at least 5 m
behind the plane of the propeller).
Attention!
Model aircraft should only be own in “normal” weather conditions, i.e. a temperature range
of -5° to +35° C. More extreme temperatures can lead to changes in battery capacity, material
characteristics and other unwanted effects.
Attention!
If your model is powered by a motor or engine, it is important to observe the safety notes provided by the manufacturer of the power plant.
Attention!
Before and after every ight check the model and all parts attached to it - e.g. propellers, control surface linkages, control surfaces etc.) for possible damage. Do not y the model again
until you have corrected any defects.
Attention!
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.
Attention!
Never y over or towards other people.
Attention!
During take-off and landing procedures the runway must be free of unauthorised persons and
movable obstacles.
Attention!
Watch the aeroplane constantly while it is in the air. Models must always give way to full-size
aircraft.
Attention!
Never y the model from public roads, squares, schoolyards, parks and public playing elds. It
is your responsibility to keep the model under full control at all times.
Attention!
All model yers should behave in a manner which avoids endangering or interfering with public safety and order. Never act in any way which will disturb other yers and jeopardise safe,
orderly ying at the site.
Attention!
As operator of this model aircraft you bear sole responsibility for its safe operation, The only
way to avoid personal injury and property damage is to operate your model cautiously and
conscientiously.
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INNOVATION & TECHNOLOGY
Attention!
If there are passers-by or spectators at your ying site, make sure that they are aware of the
dangers inherent in your activity, and insist that they keep a safe distance away (at least 5 m
behind the plane of the propeller).
Attention!
This aeroplane is highly pre-fabricated and can be completed in a very short time. However,
the work which you have to carry out is important and must be done carefully. The model will
only be strong and y well if you complete your tasks competently - so please work slowly and
accurately.
Attention!
If your model is powered by a motor or engine, it is important to observe the safety notes provided by the manufacturer of the power plant.
Attention!
Before and after every ight check the model and all parts attached to it - e.g. propellers, control surface linkages, control surfaces etc.) for possible damage. Do not y the model again
until you have corrected any defects.
Attention!
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.
Attention!
Please don’t misunderstand the purpose of these notes. All we want to do is bring to your attention the many dangers and hazards which can arise if you lack knowledge and experience,
or work carelessly or irresponsibly. If you take reasonable care, model ying is a highly creative, instructive, enjoyable and relaxing pastime.
Attention!
It is important that your shoes should not slip when you are dealing with the motor or engine.
The model must also be rmly secured.
Note!
When the model is not in use, remove the ight battery from the model, and the dry or rechargeable cells from the transmitter.
Note!
Do not subject the model to severe humidity, heat, cold or dirt.
Note!
Secure the model and transmitter when transporting them, otherwise they could slide about
and be damaged.
Care!
Clean the model and the transmitter using suitable cleaning materials only; we recommend a
lint-free cloth. Never use chemical cleaning agents, solvents, methylated spirit, white spirit or
similar.
Attention!
According to the new regulation of §103 Paragraph 3 of the LuftVZO (German Aviation Approvals Ofce), all model aircraft - whether slow-yer, park-yer, glider, or model aircraft propelled
by any form of power plant - must be insured before the model is operated. If you are not sure
about this, please ask at your local model shop where the staff will be glad to advise you.
These safety notes must be kept in a safe place. If you ever dispose of the model, be sure to
pass them on to the new owner.
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Contents of the manufacturer’s declaration:
If material defects or manufacturing faults should arise in a product distributed by us in the Fe-
deral Republic of Germany and purchased by a consumer (§ 13 BGB), we, Graupner/SJ GmbH
D-73230 Kirchheim/Teck, Germany, acknowledge the obligation to correct those defects within the
limitations described below.
The consumer is not entitled to exploit this manufacturer’s declaration if the failure in the usability
of the product is due to natural wear, use under competition conditions, incompetent or improper
use (including incorrect installation) or external inuences.
This manufacturer’s declaration does not affect the consumer’s legal or contractual rights regar-
ding defects arising from the purchase contract between the consumer and the vendor (dealer).
Extent of the guarantee
If a claim is made under guarantee, we undertake at our discretion to repair or replace the defective goods. We will not consider supplementary claims, especially for reimbursement of costs
relating to the defect (e.g. installation / removal costs) and compensation for consequent damages
unless they are allowed by statute. This does not affect claims based on legal regulations, especially according to product liability law.
Guarantee requirements
The purchaser is required to make the guarantee claim in writing, and must enclose original proof
of purchase (e.g. invoice, receipt, delivery note) and this guarantee card. He must send the defective goods to us at his own cost, using the following address:
Graupner/SJ GmbH, Serviceabteilung,
Henriettenstr.96, D 73230 Kirchheim/Teck
The purchaser should state the material defect or manufacturing fault, or the symptoms of the
fault, in as accurate a manner as possible, so that we can check if our guarantee obligation is
applicable.
The goods are transported from the consumer to us and from us to the consumer at the risk of the
consumer.
Duration of validity
This declaration only applies to claims made to us during the claim period as stated in this declaration. The claim period is 24 months from the date of purchase of the product by the consumer from
a dealer in the Federal Republic of Germany (date of purchase). If a defect arises after the end of
the claim period, or if the evidence or documents required according to this declaration in order to
make the claim valid are not presented until after this period, then the consumer forfeits any rights
or claims from this declaration.
Limitation by lapse of time
If we do not acknowledge the validity of a claim based on this declaration within the claim period,
all claims based on this declaration are barred by the statute of limitations after six months from
the time of implementation; however, this cannot occur before the end of the claim period.
Applicable law
This declaration, and the claims, rights and obligations arising from it, are based exclusively on the
pertinent German Law, without the norms of international private law, and excluding UN retail law.
Manufacturer‘s declaration on behalf of GRAUPNER/SJ GmbH
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INNOVATION & TECHNOLOGY
Assembling the model
Attention!
It is important to observe the sequence of procedures described in these building instructions.
Attention!
Before you start assembling the model we recommend that you run a lm iron over the covering lm to ensure that it is taut, as uctuations in temperature and humidity may have
caused creases, and the lm may have come loose from the wood in places. This is important,
because in some areas the lm has to be removed, and the remaining lm would then shrink
uncontrollably when ironed down again.
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Use a hot soldering iron to melt away the covering lm over the holes for the wing joiner tube, incidence pegs,
retaining screws, control surface horns and servo leads. Use your ngertips to locate the openings under the lm.
Removing covering lm
Attention!
This stage should be carried out in a well ventilated room, to avoid directly breathing in fumes.
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Attention!
Avoid damaging the raised ange of the servo output arm, otherwise the arm could fail in
ight, leaving the model uncontrollable.
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2. Servo installation
Cut down the servo output lever as shown in the photo. Centre the servo from the transmitter using a new model
memory. Push the lever onto the output shaft.
3. Fitting the rubber grommets
Push the rubber grommets into the servo mounting lugs.
Servo installation - general
1. Information on installing servos
The same procedure is employed for preparing and tting all the servos. The following steps should be carried
out for each servo which is to be installed, using the parts supplied in the servo’s accessory pack. Variations from
the standard procedure - such as tting different servo output arms, and changing the position of the arms on the
servos - are explained in the relevant stages, and shown in the pictures of the installed servos.
4. Fitting the tubular brass
spacers
Push the brass spacers into the rubber grommets from
underneath.
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INNOVATION & TECHNOLOGY
5. Extending the servo lead
If a servo extension lead is used, it must be secured using one of the clips supplied. First insert the servo lead
plug into the socket on the extension lead.
Attention!
Check that the clip engages fully,
otherwise the servo could become
disconnected in ight, leaving the
model uncontrollable.
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Push the clip over the plastic plug / socket housings.
6. Parking the servo leads
The aileron servo leads can be ‘parked’ in slots in the wing root; this prevents the nuisance of the leads falling
inside the wing.
Attention!
The slots are only intended for use when the wings are in storage. Disengage the leads from
the slots before assembling the model, otherwise the wings will not t correctly against the
fuselage; using force could damage the slotted ribs.
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The socket is tted in the slot in the fuselage side,
working from the inside, and glued in place using
thick cyano; it must nish ush with the outside of the
fuselage.
Attention!
Don’t allow glue to run inside the
socket, as this will soil the contacts,
and the connector will have to be
replaced.
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Canopy
Slide the canopy latch towards the tail and hold it in that position while you raise the rear end of the canopy and lift
it off.
Gluing the point-hinges
Attention!
Ensure that the oil only contacts the pivot of the point-hinge (1), and that no oil gets onto the
part of the hinge which is to be glued, otherwise the hinge might not be securely xed in the
hole. In this case the control surface could come loose in ight and render the model uncontrollable.
Attention!
Take care to keep the oil off your ngers, as this could transfer it to the joint areas of the hinge. Wash your hands after handling the oil to prevent unwanted transfer.
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2. Preparing the point-hinges
Apply a drop of 150 cps silicone damper oil or similar to the pivot of the point-hinge (1) to protect it from excess
glue. Lay a strip of paper towel (kitchen paper) under the point-hinge (1) to absorb any excess oil.
1. Information on gluing the point-hinges
All the point-hinges (1) should be prepared and installed in the same manner. Follow the procedure described for
each hinge at the appropriate juncture. Complete the task for one sub-assembly at a time, e.g. rst one wing and
aileron, then the next, and so on. Any deviations from the standard procedure (e.g. for the elevators) are
explained at the appropriate point in the instructions, or are shown in the pictures of the point-hinges (1) when they
are tted.
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INNOVATION & TECHNOLOGY
3. Applying glue to the hinge holes
The point-hinges (1) are glued in place using UHU-Plus Endfest 300 (slow-setting epoxy). Apply a little glue to each
hole in the control surface. If glue gets onto the surface adjacent to the hole, it can be removed by wiping with a
piece of kitchen paper dipped in methylated spirit.
4. Inserting the point-hinges
Apply a little adhesive to the rst third of the point-hinge (1), and twist the hinge into the hole. If you have used
the correct quantity of glue, the adhesive will be distributed along the length of the hinge and glue it to the control
surface over the full length of the hole. Push the point-hinge (1) into the hole to the point where the pivot axis is
located about 1 mm outside the leading edge of the control surface.
Attention!
Take care that no glue gets into the
pivot and jams the point-hinge (1), as
this might prevent the hinge rotating
when the glue has cured; the control
surface would then no longer move in
either direction.
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Attention!
Take care not to apply too much glue,
as this would cause the excess to be
forced out of the hole and into the
pivot area of the point-hinge (1).
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Apply a little adhesive to the rst third of the point-hinge
(1) and the hole in the mating part of the xed panel, as
described in section 3. Applying glue to the hinge
holes.
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Push the point-hinges (1) attached to the control surface into the holes in the xed panel or wing - depending on
the sub-assembly you are currently working on. Ensure that the colour scheme on the two panels
lines up correctly. Offer up the control surface, holding it at an angle at the pivot axis, and push the point-
hinges (1) one by one into the holes in the xed panel.
Attention!
This procedure is very important, and must be carried out with the greatest care, because there is a real risk of epoxy running into the pivot points and jamming the hinges. When the glue
has cured, the hinges will then be impossible to move, and the control surface will not deect.
Attention!
Dip a piece of kitchen paper into methylated spirit and use it to wipe away excess epoxy from
the surface of the components.
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Now push the control surface towards the xed panel until the hinge pivots are just visible. Repeatedly move the
control surface to both extremes of travel to allow the point-hinges to settle themselves into the correct position.
Temporarily x the control surface to the xed panel
with paper masking tape to ensure that it cannot shift.
Allow the epoxy to set hard, then remove the tape and
move the control surface in both directions. You may
hear a slight cracking sound as any excess glue at the
hinge pivots fractures; this is not a problem, unless the
hinge is completely jammed with glue.
!
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INNOVATION & TECHNOLOGY
Installing the tailplane
1. Aligning the tailplane
Apply a strip of paper masking tape to the underside of the fuselage (2) to protect the underlying lm. Draw a
centreline on the tape, on which a setsquare can be placed in order to help you align the tailplane (3). First mark
the end of the tailplane (3) at which the setsquare will be positioned later.
Attention!
This procedure must be carried out with the greatest care, otherwise the tailplane may be installed at an angle. This will cause the model to veer off to one side when you apply an elevator
command, and it will be difcult to y in a straight line.
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Attention!
Take care to set the tailplane (3) exactly ‘square’ in the fuselage before marking the surfaces,
otherwise you could easily remove too much lm and leave the wood exposed, where it would
be subject to weathering. This could lead to material fatigue and structural failure, leaving the
model uncontrollable.
!
2. Removing the lm from the joint surfaces
The covering lm over the joint surfaces of the tailplane (3) must rst be removed: slide the tailplane (3) through
the slots in the fuselage (2), and set it central; it must also be at 90° to the fuselage centreline. Draw a line on the
tailplane on both sides of the fuselage (2), top and bottom, to mark the area of lm to be removed.
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