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{{DISPLAYTITLE:KAVAN Cumul DLG ARF 1096mm - Manuel d'instructions}}<languages/>
== Introduction ==
{{Image frame|width=900|content=[[File:KAVAN Cumul DLG.png|300px|KAV02.8023.ARF KAVAN Cumul DLG]]|align=center|pos=bot|caption=<br>[https://kavanrc.com/item/kavan-cumul-dlg-arf-1096mm-157507 '''KAV02.8023.ARF'''] '''KAVAN Cumul DLG ARF'''}}

=== PRÉCAUTIONS ===
'''Ce modèle RC n'est pas un jouet. Utilisez-le avec précaution et en suivant strictement les instructions de ce manuel.'''

Assemblez ce modèle en suivant rigoureusement ces instructions. NE MODIFIEZ PAS le modèle. Tout manquement à cette règle entraînera l'annulation automatique de la garantie. Suivez les instructions afin d'obtenir un modèle sûr et solide à l'issue de l'assemblage.

Les enfants de moins de 14 ans doivent faire fonctionner le modèle sous la supervision d'un adulte.

Assurez-vous que le modèle soit en parfait état avant chaque vol, en veillant à ce que tout l'équipement fonctionne correctement et que la structure du modèle ne soit pas endommagée.

Volez uniquement les jours où il y a une légère brise et dans un endroit sécurisé, loin de tout obstacle.{{Note|'''Attention :''' Le modèle RC que vous allez construire et piloter n'est pas un jouet ! Bien qu'il puisse sembler léger et lent en vol, il est capable de causer des blessures graves et des dommages matériels. La construction correcte de ce modèle, l'installation appropriée de l'équipement RC et du moteur, les tests et le respect de toutes les normes de sécurité (et du bon sens) en vigueur dans votre pays relèvent de votre responsabilité exclusive. Si vous débutez dans le modélisme RC, consultez votre magasin de loisirs local ou un modéliste expérimenté dans votre club RC local pour trouver un bon instructeur.|type=error}}

Vous devez construire le modèle selon les instructions. Ne modifiez pas et n'altérez pas le modèle, car cela pourrait entraîner un modèle dangereux ou difficile à piloter. Prenez le temps de le construire droit, correctement et solidement. Utilisez des équipements radio et autres composants de qualité supérieure, installez-les correctement et testez leur fonctionnement avant le premier vol et avant tout vol ultérieur. Pilotez le modèle uniquement avec l'aide compétente d'un modéliste expérimenté si vous n'êtes pas déjà un pilote RC chevronné.

{{Note|'''Remarque :''' En tant que fabricant du kit, nous vous fournissons un kit de qualité supérieure avec des instructions détaillées. Cependant, la qualité et les performances de votre modèle fini dépendent de la manière dont vous le construisez ; par conséquent, nous ne pouvons en aucun cas garantir les performances de votre modèle une fois terminé, et aucune garantie implicite ou explicite n'est donnée quant aux performances ou à la sécurité de votre modèle finalisé.|type=info}}

=== Spécifications ===
{| class="wikitable"
|+
|'''Envergure :'''
|1096 mm
|-
|'''Longueur :'''
|880 mm
|-
|'''Poids total :'''
|180 g
|-
|'''Profil de l'aile :'''
|YA 0801
|-
|'''Position du centre de gravité :'''
|65–70 mm
|-
|'''Contrôles :'''
|Direction, profondeur
|}

<span id="Recommended_RC_equipment"></span>
=== Équipements RC recommandés ===

* Servo de direction et de profondeur : [https://www.kavanrc.com/item/go-6mg-0-1s-60-0-89kg-cm-140824 KAVAN GO-6MG] 2×
* Batterie de réception : 1S LiPo 3.7 V 450–500 mAh

=== Colles recommandées ===
À moins d’indication contraire, utilisez de la colle cyanoacrylate (CA) de viscosité moyenne  ([https://www.kavanrc.com/item/kavan-power-ca-20g-stredni-vterinove-lepidlo-en-152585 KAV56.9952] KAVAN Power CA Medium). Les pièces fortement sollicitées (comme le longeron d’aile) doivent être collées avec de l’époxy à prise lente (30 minutes ou plus, comme l’époxy KAV56.9967 30 min) pour assurer une résistance élevée et un temps de positionnement adéquat.

<span id="Tools_and_accessories"></span>
=== Outils et accessoires ===

* Couteau de modéliste très affûté (ex. : Excel 16001 avec lame n°11)
* Ciseaux
* Perceuse électrique et forets
* Coupe-fil
* Pince à bec fin
* Tournevis
* Scie à dos
* Papier abrasif n°180–220, 360–400
* Limes aiguilles
* Fer à souder et soudure
* Épingles de modéliste
* Bâtonnet et récipient pour mélanger l'époxy
* Ruban de masquage, ruban adhésif transparent
* Alcool isopropylique (pour nettoyer l’excès d'époxy)
* Mouchoirs en papier ou chiffon doux (pour nettoyage de l'époxy excédentaire)
* Règle avec échelle
* Équerre
* Film plastique fin transparent (pour protéger le plan de construction/établi)
* Marqueur permanent
* Pistolet à colle chaude et bâtons de colle

<span id="Model_assembly"></span>
=== Assemblage du modèle ===

<span id="Wing"></span>
==== AILE ====

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* Locate the '''W1''' and '''W2''' riblets, '''W34''' wing joiner and '''W32''' wing bolt plate. '''(Fig. 2)'''
* Sand lightly the edges of all the parts. Trial fit the wing joiner '''W34''' - it has to go all the way into the respective bays in wing halves easily - sand the joiner slightly or trim the bays using a fine needle file if necessary.
* Using a very sharp pointed modeller’s knife remove the covering film over the notch for the '''W32''' wing bolt plate near the trailing edge of the wing halves. Slide the wing panels onto the '''W34''' wing joiner. Insert the '''W1''' and '''W2''' riblets between the root ribs and the '''W32''' plate into the notches in the wing panels and '''W2''' riblet. Secure the wing panels using strips of masking tape. Attach the wing to the fuselage to check the alignment pin of the '''W1''' riblet engages correctly into the corresponding slot in the fuselage and the hole in the '''W32''' plate matches the position of the captive nut pre-installed in the fuselage. '''(Fig. 3)'''
* Once you are satisfied, use 30 min epoxy to glue the '''W34''' wing joiner in place as well the '''W1''' and '''W2''' riblets aligned to match the wing root rib. '''(Fig. 4)'''
* Put the wing half with the wing joiner glue in on your workbench (protected by a sheet of plastic film) so the alignment pin of the '''W1''' riblet protrudes over the edge of the table; then epoxy the other wing panel. Be sure the trailing edges of both wing panels match perfectly. '''(Fig. 5)'''
* Epoxy the '''W32''' wing bolt plate in place. Once the glue has cured drill the hole for the wing bolt using 3.2 mm (1/8”) drill bit. Finally, apply a strip of clear sticky tape over the wing centre joint. '''(Fig. 6)'''
* Epoxy thoroughly the carbon discus launch pin into the left (for a right-handed pilot) or right (for a left-handed pilot) wing tip. '''(Fig. 7)'''
</div>

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==== Fuselage ====
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
* Using a very sharp pointed modeller’s knife, cut the covering film over the opening for the tailplane pylon in the horizontal stabilizer and over control horn slots in the elevator and rudder. Cut the small slots for the Kevlar® thread in the fin - refer to '''Fig. 9'''.
* Use a fine needle file to trim the pre-cut slots for the horizontal tailplane pylon, fin and elevator and rudder push rod exits in the carbon tube tail boom. Use a round fine needle file to make a groove for the rudder push rod tube in the tailplane pylon '''F22'''. '''(Fig. 8)'''
* Insert the tailplane pylon '''F22''' into the tail boom - no glue yet. Insert the fin and rudder assembly into the notch at the end of the tail boom and tack glue it to the tail boom. Bind the fin to the tail boom with a Kevlar® thread threaded through the slots in the fin. '''(Fig. 9)'''
* Slide the horizontal stabilizer on the '''F22''' tailplane pylon; align it square to the fin and to the longitudinal axis of the tail boom and tack glue it to the pylon. Double-check the correct alignment; once satisfied, apply a generous amount of cyano along all the joints and onto the Kevlar® thread. Insert the elevator and rudder push rod outer tubes into the tail boom. Secure them with a piece of polyurethane foam soaked with epoxy that you will work into the centre of the tail boom with a thin stick. This is great for a precise, slope free elevator and rudder control. '''(Fig. 10 + 11)'''
* The servo mount supplied in the kit has been tailored for the recommended KAVAN GO-6MG servos. Whatever type of servos you are going to use, always check if the openings won’t need a bit of trimming first. We recommend soaking the edges of the servo openings with cyano. Once satisfied, glue the servo mount in place (the servos are to be fitted in the upside-down position). '''(Fig. 12+13)'''
* Thread the protruding ends of the elevator and rudder push rod outer tubes through the holes in the rear servo compartment former so the tubes lead directly to the horns of servos in the servo mount. Insert the tail boom into the fuselage - no glue yet. '''(Fig. 14)'''
* Attach the wing to the fuselage and secure it with the M4 bolt. Looking from above, front and rear check the fuselage and tail boom are straight and the wing dihedral makes a nice symmetrical "V" in relation to the horizontal stabilizer. Once satisfied cut the push rod outer tubes to the correct length and epoxy thoroughly the tail boom into the fuselage. Double-check the correct alignment before the glue sets.
* Solder the M2 brass threaded couplers on one end of the 0.8 mm piano wire push rods. Screw the ball links on and slide the push rods into the respective outer tubes. Secure the ball links to both two servo arms with the M1.6 screws supplied in the kit. Insert the fibreglass control horns into the slots in the elevator and rudder - do not glue yet. Set the servos to the neutral with your radio on. Attach the servo arms square to the side of the servo case. Set the elevator and rudder flush with the horizontal stabilizer resp. fin. Mark the correct length of the push rods and bend them to the right angle (you can make a "Z-bend", but the simple L-bend usually works well enough). Insert the L-bends into the holes in the control horns and cyano the horns into the elevator and the rudder still set in the neutral position. Finally, secure the servos with drops of hot melt glue, silicone or MS polymer glue in the servo tray. '''(Fig. 15+10+11)'''
* Glue the '''F14''' locking plate to the front of the servo & battery compartment hatch; the locking plate has to match the position of a notch in the fuselage side reinforcement plate; the hatch has to match the opening in the fuselage side. Epoxy the pair of magnets '''F15''' into the hatch and fuselage. Double-check their polarity - they have to cling to each other! For easy removal, apply a strip of folded sticky tape to the rear edge of the hatch. '''(Fig. 16+17)'''
* Install your receiver into the fuselage under the wing; the receiver battery will go into the nose.
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
* Install the tow hook in the plywood tow hook plate - drill through one of the pre-drilled holes using a 3.0mm drill bit. It should be positioned about 5 mm in front of the centre of gravity. '''(Fig. 18)'''
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
==== Recommended control surface throw, CG position ====
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
* CG Position: 69–72 mm '''(Fig. 19)'''
* Rudder: ±25 mm
* Elevator: ±10 mm
* Discus launch configuration: rudder -1 mm against the direction of the launch (right-handed - rudder 1 mm right), elevator 1 mm down.
{{Note|type=info|'''Note:''' Use this configuration for the climbing phase of the discus launch only; and only after the model has been trimmed out properly and you‘ve made yourself familiar with the controls.}}
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
=== Flying ===
Be sure you are using fully charged batteries. Now (and before any further flight again) check the correct function of the whole radio equipment, motor and moving of control surfaces. Be sure any part of flight equipment cannot move during flight. We strongly recommend making a range check (see your radio instruction manual for details).
</div>

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'''The first flight:''' Wait for a calm day. Fly only on a safe site such as an RC club flying field. Glider will be very happy on your favourite slope on a calm day. The very light lift will allow perfect fine trimming out.
</div>

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Switch your transmitter and then the receiver on and check all the working systems one more time. Facing INTO the wind hold your transmitter in one hand; grip the model in the other hand near the centre of gravity. Hold it at head level and give the model a fairly powerful push exactly into the wind; wings level, nose slightly down. Your model should now glide in a long, flat and straight path without needing any help from you. Use the controls gently if necessary, and adjust the trim tabs until your CUMUL DLG glides above the described way. Now check the position of control surfaces; set the length of pushrods to bring back trim tabs on your transmitter to a central position if necessary (we strongly recommend doing it in any way). Check again the gliding of your CUMUL DLG.
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
Now you are ready to make your first discus launch.
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
[[File:Discus launch - Pos 0.png|right|frameless|300x300px]]
==== Discus Launch ====
The discus launch allows your model to reach quite a high altitude without much effort. As it is with any "sports performance", it will require some training to do it right – our step-by-step manual makes it easy. We will describe the procedure for a right-handed pilot; with the launching pin attached to the left wingtip. The "left-handed" procedure is the mirror image.
</div>

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[[File:Discus launch - Pos A.png|right|frameless|300x300px]]
==== Position A - getting ready: ====
Your right index finger and middle finger should be wrapped around the launch pin at the left wing tip. Your thumb is to be gently pressed against the leading edge of the wing. Stand with your left shoulder into the wind and the right wing tip pointing at ca 45° angle to the ground.
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
[[File:Discus launch - Pos B.png|right|frameless|300x300px]]
==== Position B - the first step: ====
Take a long step with your left foot pulling the CUMUL DLG up and forward with your right arm.
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
[[File:Discus launch - Pos C.png|right|frameless|300x300px]]
==== Position C - rotation: ====
Start rotating to the left keeping the CUMUL DLG flat and your right arm extended.
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
[[File:Discus launch - Pos D.png|right|frameless|300x300px]]
==== Position D – continued rotation: ====
The second half of the rotation - the part that is most important for a good launch. Do not use too much arm in this section. Just let the swing of your torso speed the CUMUL DLG up.
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
[[File:Discus launch - Pos E.png|right|frameless|300x300px]]
==== Position E - release: ====
By this time in the launch the plane will be trying to climb on its own. Just release your fingers and let the plane fly out of your hand directly into the wind.
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
[[File:Discus launch - Pos F.png|right|frameless|300x300px]]
==== Position F – taking control: ====
Catch your balance. Watch your CUMUL DLG climb whilst getting hold of your radio and be ready to control your model. The plane will climb after release – the climb angle should be shallow at first. Once you are well acquainted with the discus launch you can use more force and increase the launch angle up to 60–80 degrees. When completely familiar and comfortable you can add two quick steps before starting the turning sequence to get some extra speed and energy.
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
When the plane has slowed almost to the point of stopping push full down elevator to achieve level flight. When this is done at the right moment the plane will go into horizontal flight with just enough airspeed to maintain a gentle glide. If it is done too early the plane will pitch up her nose dangerously after a short dive. If it is done too late the plane will stall.
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
[[File:Discus_launch.png|frameless|961x961px]]
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
=== Parts list ===
{| class="wikitable"
! colspan="4" |'''Main parts'''
|-
!'''Part'''
!'''Quantity'''
!'''Building plan no.'''
!'''Material'''
|-
|Instruction manual
|1
|
|
|-
|Sheet of stickers
|1
|
|
|-
|Pushrod set
|2
|
|Plastic tube + 0.8 mm piano wire
|-
|Tail boom
|1
|
|Carbon tube Ø6/5 mm
|-
|Left wing panel
|1
|
|
|-
|Right wing panel
|1
|
|
|-
|Horizontal tailplane
|1
|
|
|-
|Fin & rudder
|1
|
|
|-
! colspan="4" |'''Bag no. 1 - small parts'''
|-
|Tow hook
|1
|
|Metal
|-
|Magnet Ø3 mm
|2
|F15
|Neodymium
|-
|Wing bolt M4
|1
|
|Nylon
|-
|Rudder horn
|2
|
|Fibreglass 1.5 mm
|-
|Ball link short M2
|2
|
|
|-
|Threaded coupler M2
|2
|
|Brass M2/0.8 mm
|-
|Rudder and elevator servo tray
|1
|F12
|Balsa 4 mm
|-
|Carbon pin
|1
|
|Ø5 mm
|-
|Fuselage hatch lock
|1
|F14
|Lite Ply 3 mm
|-
|Wing riblet
|1
|W2
|Lite Ply 3 mm
|-
|Wing riblet
|1
|W1
|Plywood 3 mm
|-
|Wing joiner
|1
|W34
|Plywood 3 mm
|-
|Wing bolt plate
|1
|W32
|Plywood 2 mm
|-
|Tailplane pylon
|1
|F22
|Lite Ply 3 mm
|-
|Kevlar thread
|1
|
|
|}
</div>

<div lang="en" dir="ltr" class="mw-content-ltr">
{{Note|'''Note:''' The pictures below are just for illustration only – some show our prototype that might differ slightly from the actual, regular series production kits.|type=info}}
</div>