Seagull Models RV-8 35-40cc User guide

Page 1
ASSEMBLY MANUAL
Code : SEA 388
Specications:
Wingspan------------------------ 180cm------------------------- 71 inches.
Length---------------------------- 152.7cm---------------------- 60 inches.
Wing area------------------------ 64 sq.dm---------------------- 992 sq.in.
Weight---------------------------- 5.8 kg-------------------------- 12.8 lbs.
Engine---------------------------- 35 - 40cc.
Motor 180; 3000-3500watt; ESC 80A-120A; Lipo 12s 3300-4200mAh.
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RV-8 ARF 35-40cc
INTRODUCTION
ank you for choosing the RV-8 ARF 35-40cc ARTF by SG MODELS. e RV-8 ARF
Instruction Manual.
35-40cc was designed with the intermediate/advanced sport yer in mind. It is a semi
scale airplane which is easy to y and quick to assemble. e airframe is conventionally built using balsa, plywood to make it stronger than the average ARTF, yet the design allows the aeroplane to be kept light. You will nd that most of the work has been done for you
already. e motor mount has been tted and the hinges are pre-installed. Flying the RRV-
8 ARF 35-40cc is simply a joy.
is instruction manual is designed to help you build a great ying aeroplane. Please read this manual throughly before starting assembly of your RV-8 ARF 35-40cc Use the parts
listing below to indentify all parts.
WARNING
Please be aware that this aeroplane is not a toy and if assembled or used incorrectly it is capable of causing injury to people or property. WHEN YOU FLY THIS AEROPLANE YOU ASSUME ALL RISK & REPONSIBILITY.
If you are inexperienced with basic R/C ight we strongly recommend you contact your R/C supplier and join your local R/C model Flying Club. R/C Model Flying Clubs oer a variety of training procedures designed to help the new pilot on his way to successful R/C ight. ey will also be able to advise on any insurance and safety regulations that may apply.
KIT CONTENTS
1
3
5
2
3
2
14
9
6
10
7
12
11
4
8
2
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KIT CONTENTS
HINGING THE FLAP
SEA388 RV-8 ARF 35-40cc
1. Fuselage
2. Wing set (2)
3. Tail set (2)
4. Canopy
5. Cowling
6. Wing tube
7. landing gear
8. Fuel tank
9. Tail wheel
10. Pushrod
11. Ep Motor box
12. Pilot
13. Spinner
14. Wing tips bulbs
ADDITIONAL ITEMS REQUIRED
Note : e control surfaces, including the ailer-
ons, elevators, and rudder, are prehinged with hinges installed, but the hinges are not glued in place. It is imperative that you properly adhere the hinges in place per the steps that follow us­ing a high-quality thin C/A glue.
Carefully remove the aileron from one of the wing panels. Note the position of the hinges.
1.
C/A Hinge
� 35-40cc gasoline engine. � Computer radio 7 channel with 8
servos.
� Glow plug to suit engine. � Propeller to suit engine 20x8-21x10. � Protective foam rubber for radio
system.
TOOLS & SUPPLIES NEEDED
in cyanoacrylate glue. Medium cyanoacrylate glue. 30 minute epoxy. 5 minute epoxy. Hand or electric drill. Assorted drill bits. Modelling knife. Straight edge ruler. 2mm ball driver. Phillips head screwdriver. 220 grit sandpaper. 90° square or builder’s triangle. Wire cutters. Masking tape & T-pins. read-lock. Paper towels.
Remove each hinge from the wing panel and ap and place a T-pin in the center of each hinge. Slide each hinge into the aileron until the T-pin is snug against the aileron. is will help ensure an equal amount of hinge is on either side of the hinge line when the ap is mounted to the wing panel.
2.
T-pin
Hinge
Slide the wing panel on the ap until there is only a slight gap. e hinge is now centered on the wing panel and ap. Re­move the Tpins and snug the ap against the wing panel. A gap of 1/64” or less should be maintained between the wing panel and ap.
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RV-8 ARF 35-40cc
Instruction Manual.
Deect the ap and completely saturate each hinge with thin C/A glue. e ap front surface should lightly contact the wing dur­ing this procedure. Ideally, when the hinges are glued in place, a 1/64” gap or less will be maintained throughout the lengh of the ap to the wing panel hinge line.
NOTE : e hinge is constructed of a spe­cial material that allows the C/A to wick or penetrate and distribute throughout the hinge, securely bonding it to the wood structure of the wing panel and ap.
3.
Repeat this process with the other wing panel, securely hinging the ap in place.
Aer both ap are securely hinged, rmly grasp the wing panel and ap to make sure the hinges are securely glued and cannot be pulled out. Do this by carefully applying medium pressure, trying to separate theM ap from the wing panel. Use caution not to crush the wing structure.
5.
Hinge
4.
CA glue
Turn the wing panel over and deect the ap in the opposite direction from the oppo­site side. Apply thin C/A glue to each hinge, making sure that the C/A penetrates into both the ap and wing panel.
Note :
Work the aileron up and down sev­eral times to “work in” the hinges and check for proper movement.
HINGING THE AILERON
Note : e control surfaces, including the ailer-
ons, elevators, and rudder, are prehinged with hinges installed, but the hinges are not glued in place. It is imperative that you properly adhere the hinges in place per the steps that follow us­ing a high-quality thin C/A glue.
Carefully remove the aileron from one of the wing panels. Note the position of the hinges.
1.
Using C/A remover/debonder and a paper towel, remove any excess C/A glue that may have accumulated on the wing or in the ap hinge area.
4
C/A Hinge
Page 5
Remove each hinge from the wing panel and aileron and place a T-pin in the center of each hinge. Slide each hinge into the wing panel until the T-pin is snug against the wing panel. is will help ensure an equal amount of hinge is on either side of the hinge line when the aileron is mounted to the aileron.
2.
T-pin
Hinge
Slide the wing panel on the aileron until there is only a slight gap. e hinge is now centered on the wing panel and aileron. Remove the T-pins and snug the aileron against the wing panel. A gap of 1/64” or less should be maintained between the wing panel and aileron.
Deect the aileron and completely saturate each hinge with thin C/A glue. e ailerons front surface should lightly contact the wing during this procedure. Ideally, when the hinges are glued in place, a 1/64” gap or less will be maintained throughout the lengh of the aileron to the wing panel hinge line.
4.
CA glue
5.
6.
NOTE : e hinge is constructed of a spe­cial material that allows the C/A to wick or penetrate and distribute throughout the hinge, securely bonding it to the wood structure of the wing panel and aileron.
3.
Hinge
Turn the wing panel over and deect the aileron in the opposite direction from the opposite side. Apply thin C/A glue to each hinge, making sure that the C/A penetrates into both the aileron and wing panel.
Using C/A remover/debonder and a paper towel, remove any excess C/A glue that may have accumulated on the wing or in the aileron hinge area.
Repeat this process with the other wing panel, securely hinging the aileron in place.
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RV-8 ARF 35-40cc
Instruction Manual.
Aer both ailerons are securely hinged, rmly grasp the wing panel and aileron to make sure the hinges are securely glued and cannot be pulled out. Do this by carefully ap­plying medium pressure, trying to separate the aileron from the wing panel. Use caution not to crush the wing structure.
7.
2.
3.
Note :
Work the aileron up and down sev­eral times to “work in” the hinges and check for proper movement.
WING TIP BULBS
Please see below pictures.
1.
Lipo-3s
4.
Epoxy
5.
e green light for right wing tip, and the red light for le wing tip. ey are designed to operate on voltages 12 volts. Connect four lights into switch circuit so that optional the dierent ashes mode.
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Page 7
6.
7.
Epoxy
INSTALL THE AILERONS
CONTROL HORN
Locate the aileron control horns. e taller control horn is used for the ailerons, and the shorter horn for the aps.
1.
Fiberglass control horn
Use sandpaper to scu the bottom of the aileron and ap control horns. Use a paper towel and isopropyl alcohol to remove any oils or debris from the control horns.
8.
9.
2.
Check the t of the control horns to the aileron and ap. ey should rest ush against the control surface as shown.
3.
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RV-8 ARF 35-40cc
Instruction Manual.
Place low-tack tape 1/32 inch (1mm) from the control horn slot. is will pre­vent epoxy from getting on the control surface when the control horns are glued in place.
4.
Remove the control horns from the control surfaces. Apply epoxy to the slot in the aileron and ap. Make sure the epoxy gets into the slot for a good bond between the surfaces and control horn.
6.
Epoxy
Before the epoxy fully cures, remove the tape from around the control horn. is will allow the epoxy to ow around the control horn, creating a small let between the control horn and surface for a ished look and secure bond.
7.
5.
Epoxy
Apply epoxy to the area of the control horns that st into the slots. Use enough epoxy so the control horns will be fully bonded to the ed surfaces.
INSTALL FLAP CONTROL HORN
TInstall the ap control horn using the same method as same as the aileron con­trol horns.
1.
Fiberglass control horn
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2.
3.
Minimum servo spec.
Torq ue : 333.00 oz-in (23.98 kg-cm) @
6.0V; oz-in (29.02 kg-cm) @ 7.4V
Install the rubber grommets and brass collets onto the aileron servo. Test t the servo into the aileron servo mount.
Because the size of servos dier, you may need to adjust the size of the precut opening in the mount. e notch in the sides of the mount allow the servo lead to pass through.
Use dental oss to secure the connec­tion so they cannot become unplugged.
INSTALLING THE AILERON SERVOS
1.
3.
Using a small weight (Weighted fuel pickup works well) and thread, feed the string through the wing as indicated.
4.
2.
Attach servo lead to the aileron servo. Attach the string to the servo lead and carefully thread it though the wing. Once you have thread the lead throught the wing, remove the string so it can use for the other servo lead.
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RV-8 ARF 35-40cc
Instruction Manual.
5.
6.
8.
9.
Tape the servo lead to the wing to pre­vent it from falling back into the wing.
7.
Reinstall the servo into the servo mount and secure the servo inplace using the wood screws provided with you radio system.
10.
44mm
11.
10
Repeat the procedure for the other wing half.
Page 11
INSTALLING THE AILERON PUSHROD
Please study images below.
1.
5.
INSTALLING THE FLAP SERVO
Repeat the procedure for the ap servo.
2.
3.
70mm
1.
INSTALLING THE FLAP PUSHROD
Repeat the procedure for the aileron pushrod.
1.
4.
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RV-8 ARF 35-40cc
Instruction Manual.
2.
INSTALL HINGE FOR STABILIZER
AND ELEVATOR
Please study images below.
1.
4.
Epoxy
5.
2.
3.
6.
7.
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INSTALL ELEVATOR CONTROL HORN
1.
Fiberglass control horn
2.
5.
6.
3.
4.
7.
Epoxy
You can cut horizontal and vertical tail holes, please see the image below.
8.
Epoxy
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RV-8 ARF 35-40cc
Instruction Manual.
9.
10.
13.
14.
11.
12.
15.
32mm
16.
14
Minimum servo spec.
Torq ue : 333.00 oz-in (23.98 kg-cm) @
6.0V; oz-in (29.02 kg-cm) @ 7.4V
Page 15
INSTALL HINGE FOR RUDDER AND
FIN
INSTALL RUDDER CONTROL HORN
Please study images below. Please study images below.
1.
2.
1.
10mm
Fiberglass control horn
2.
3.
4.
3.
Epoxy
4.
Epoxy
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RV-8 ARF 35-40cc
Instruction Manual.
5.
6.
HORIZONTAL TAIL INSTALLATION
Please study images below.
1.
Epoxy
2.
7.
8.
3.
4.
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Page 17
6.
5.
3.
4.
M3x12mm
ELEVATOR PUSHROD INSTALLATION
Please study images below.
1.
2.
5.
INSTALL RUDDER CABLE AND SERVO
NOTE : servos arm is not provided from manufacturer.
1.
70mm
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RV-8 ARF 35-40cc
Instruction Manual.
Tape the rudder balance tab to the top leading edge of the vertical n in the neutral position as shown. is ensures the rudder is straight when the cables are attached.
2.
read the rudder cable through a brass swage tube, then the threaded co pler, and back through the brass swage tube on both sides. Pull light tension on the cable through the coupler on both sides as shown.
5.
6.
3.
4.
Loop the cable back through the brass swage tube and tighten the second loop through the brass swage tube as shown.
7.
Crimp the brass tube with a crimping tool or pliers.
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8.
Cut o excess cable as shown.
9.
Feed one rudder cable through the pre installed cable exit tube in the rear of the fuse toward the front of the fuse. Repeat for other side.
12.
read cable through brass swage tube.
13.
10.
11.
read cable through the threaded coupler hole, and back through the brass swage tube as shown.
Loop the cable back through the brass swage tube and pull tight.
14.
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RV-8 ARF 35-40cc
Instruction Manual.
Crimp the brass swage tube with a crimping tool or pliers.
15.
Cut o excess cable as shown.
16.
1.
2.
17.
3.
2mm
4.
C/A glue
TAILWHEEL INSTALLATION
Locate items necessary to install tailwheel.
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5.
9.
M3x15mm
6.
7.
10.
11.
M3x15mm
8.
12.
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RV-8 ARF 35-40cc
Instruction Manual.
13.
INSTALLING THE MAIN LANDING
GEAR TO FUSELAGE
Please study images below.
1.
3.
4.
2.
5.
6.
M3x4mm
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7.
11.
8.
9.
12.
13.
10.
14.
M3x4mm
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RV-8 ARF 35-40cc
Instruction Manual.
15.
16.
19.
M3x15mm
20.
Loctite
17.
18.
21.
M3x15mm
22.
M4x20mm
24
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23.
INSTALLING THE RECEIVER SWITCH
24.
Loctite
M4x20mm
Install the switch into the precut hole in the side, in the fuselage.
1.
2.
Trim and cut
25.
26.
3.
Switch
INSTALLING THE ENGINE SWITCH
1.
Trim and cut
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RV-8 ARF 35-40cc
Instruction Manual.
2.
1.
3.
Switch
4.
FUEL TANK INSTALLATION
2.
You should mark which tube is the vent and which is the fuel pickup when you attach fuel tubing to the tubes in the stopper. Once the tank is installed inside the fuselage, it may be dicult to determine which is which.
5.
MOUNTING THE ENGINE
1.
Slide the fuel tank into the fuselage. Guide the lines from the tank through the hole in the ewall.
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3.
2.
Remove mounting template from rewall. Firewall shown with mounting holes drilled ready for engine mounting.
6.
7.
4.
Use a 5.2mm bit to drill the engine mounting holes.
5.
5.2mm
8.
M5x90mm
Tighten mounting bolts and secure engine to rewall.
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RV-8 ARF 35-40cc
Instruction Manual.
9.
e re wall has the location for the throttle pushrod tube (pre-drill).
Slide the pushrod tube in the rewall and guide it through the fuel tank mount. Use medium C/A to glue the tube to the rewall and the fuel tank mount.
2.
3.
Connect the Z-bend in the 450mm throttle pushrod to the outer hole of the carburetor arm.
Slide the throttle pushrod wire into the tube. Position the engine between the mounts. Use four M4x30mm machine screws to secure the engine to the mount as shown.
THROTTLE SERVO INSTALLATION
1.
Attach throttle pushrod to the carbure­tor throttle arm with the ball link.
4.
160mm
Use a 1/4” bit to drill a pushrod exit hole in the rewall in line with the engine carburetor throttle arm.
Assemble ball link to threaded end of pushrod.
28
Install adjustable servo connector in the servo arm as same as picture below:
Page 29
5.
8.
Epoxy
servo arm
Install throttle servo into servo mount
ing tray
6.
Reinstall the servo horn by sliding the connector over the pushrod wire. Center the throttle stick and trim and install the servo horn perpendicular to the servo center line.
Move the throttle stick to the closed po­sition and move the carburetor to closed. Use a 2.5mm hex wrench to tighten the screw that secures the throttle pushrod wire. Make sure to use threadlock on the screw so it does not vibrate loose.
9.
IGNITION INSTALLATION
7.
I read nylon tie through mounting holes.
1.
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RV-8 ARF 35-40cc
Instruction Manual.
2.
Connect ignition module to pickup line of engine. Secure with Safety Clip, safety wire, tape or other method. Ensure the plugs will not come apart from vibration or light tension.
Secure ignition wire with nylon ties as necessary.
5.
6.
3.
4.
7.
8.
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COWLING
Please study images below.
1.
2.
4.
Use a drill and drill bit to drill the holes for the cowl mounting screws. Make sure the cowl position is correct before drilling each hole.
5.
Tape the cowl to the fuselage using low-tack tape.
3.
Install the muer and muer extension onto the engine and make the cutout in the cowl for muer clearance. Connect the fuel and pressure lines to the carburetor, muer and fuel ler valve. Secure the cowl to fuselage using the M3x12mm socket head screws.Putting a small length of silicon fuel tube under the head of the screw helps with vibration.
6.
Loctite
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RV-8 ARF 35-40cc
Instruction Manual.
7.
8.
1.
M3x12mm
Recommend the items necessary to install the electric power conversion parts included with your model.
- Motor: 180cc - 195 KV
- Propeller: 27 x 10
9.
- ESC: 80-120A
- 12S- 14S Lipo
2.
3.
ELECTRIC POWER CONVERSION
Locate the items neccessary to install the electric power conversion included with your model.
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4.
5.
Attach the electric motor box to the re­wall centered with the cross lines drawn on the electric motor box and rewall. Using M5x35mm to secure the motor box to the rewall. Please see pictures below.
8.
9.
6.
7.
M5x35mm and washers
Attach the motor to the front of the elec­tric motor box using four 4mm blind nut, four M5x35mm hex head bolts to secure the motor. Please see picture shown.
10.
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RV-8 ARF 35-40cc
Instruction Manual.
11.
12.
14.
M5x25mm
15.
5mm
en, use 5mm drill bit to enlarge the holes on the electric motor box.
13.
6.5mm
Attach the motor mount to the front of the electric motor box using four
6.5mm blind nut, four M5x25mm hex head bolts to secure the motor. Please see picture shown.
160mm
16.
Attach the speed control to the side of the motor box using two-sided tape and tie wraps. Connect the appropriate leads from the speed control to the motor. Make sure the leads will not interfere with the operation of the motor.
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17.
21.
18.
19.
22.
Battery
INSTALLING THE SPINNER
Install the spinner backplate, propeller and spinner cone.
1.
20.
e propeller should not touch any part of the spinner cone. If it does, use a sharp modeling knife and carefully trim away the spinner cone where the propel­ler comes in contact with it.
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RV-8 ARF 35-40cc
Instruction Manual.
2.
INSTALLATION PILOT AND CANOPY
Locate items necessary to install pilot and canopy.
1.
2.
3.
Epoxy
A scale pilot is included with this ARF. e Pilot included tting well to the cock­pit. (or you can order others scale pilot gures made by SG Models. ey are available at SG Models distributors.)
If you are going to install a pilot gure, please use a sanding bar to sand the base of the gure so that it is at.
150mm
Epoxy canopy onto the fuselage. Trace around the canopy and onto the fuselage using a epoxy.
4.
Epoxy
Position the pilot gure on the canopy oor as show. Locate the oval shaped on the canopy oor and remove the cover­ing. Use epoxy to glue this into the base of the pilot gure and glue the cockpit panel in place with C/A glue, please see pictures as shown.
36
INSTALLING THE BATTERY-RECEVER
Plug the servos leads and the switch lead into the receiver. Plug the battery pack lead into the switch also.
Page 37
Wrap the receiver and battery pack in the protective foam rubber to protect them from vibration.
Route the antenna in the antenna tube inside the fuselage and secure it to the bottom of fuselage using a plastic tape.
1.
Receiver
Battery
3.
4.
ATTACHMENT WING - FUSELAGE
Attach the aluminium tube into fuselage.
1.
Wing tube
2.
5.
M4x20mm
6.
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RV-8 ARF 35-40cc
Instruction Manual.
APPLY THE DECALS
1) If all the decals are precut and ready to stick. Please be certain the model is clean and free from oily ngerprints and dust. Position decal on the model where de­sired, using the photos on the box and aid in their location.
2) If all the decals are not precut, please use scissors or a sharp hobby knife to cut the decals from the sheet. Please be cer­tain the model is clean and free from oily ngerprints and dust. Position decal on the model where desired, using the pho­tos on the box and aid in their location.
BALANCING
1) It is critical that your airplane be balanced correctly. Improper balance will cause your plane to lose control and crash. THE CENTER OF GRAV­ITY IS LOCATED 120MM BACK FROM THE LEADING EDGE OF THE WING AT THE WING ROOT.
*If possible, rst attempt to balance the model by changing the position of the re­ceiver battery and receiver. If you are un­able to obtain good balance by doing so, then it will be necessary to add weight to the nose or tail to achieve the proper balance point.
With the wings attached to the fuselage, all parts of the model installed ( ready to y), and empty fuel tanks, hold the model at the marked balance point with the sta­bilizer level.
Li the model. If the tail drops when you li, the model is “tail heavy” and you must add weight* to the nose. If the nose drops, it is “nose heavy” and you must add weight* to the tail to balance.
1.
120mm
2) Mount the wing to the fuselage. Place a piece of masking tape on the top of each wing 88mm back from the leading edge at the wing root.
3) With the model inverted, place your ngers on the masking tape and carefully li the plane. is is the point at which your model should balance for your rst ights. Later, you may wish to experiment by shiing the balance up to 120mm for­ward or back to change the ying char­acteristics. Moving the balance forward may improve the smoothness and arrow­like tracking, but it may then require more speed for take o and make it more dicult to slow down for landing. Moving the balance a makes the model more agile with a lighter and snappier ”feel”. In any case, please start at the loca­tion we recommend.
CONTROL THROWS
Ailerons:
High Rate : Up : 80 mm Down : 80 mm Low Rate : Up : 40 mm Down : 40 mm
Elevator:
High Rate : Up : 140 mm Down : 140 mm Low Rate : Up : 70 mm Down : 70 mm
Rudder:
High Rate : Right : 120 mm Le : 120 mm Low Rate : Right : 60 mm Le : 60 mm
Flap:
Mid : 40mm Full : 80mm
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Page 39
70-140mm 70-140mm
Fuselage
Wing
60-120mm 60-120mm
40-80mm 40-80mm
40mm
80mm
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RV-8 ARF 35-40cc
FLIGHT PREPARATION PREFLIGHT CHECK
Instruction Manual.
Check the operation and direction of the elevator, rudder, ailerons and throttle.
A) Plug in your radio system per the manufacturer’s instructions and turn everything on.
B) Check the elevator rst. Pull back on the elevator stick. e eleva­tor halves should move up. If it they do not, ip the servo reversing switch on your transmitter to change the direc­tion.
C) Check the rudder. Looking from behind the airplane, move the rudder stick to the right. e rudder should move to the right. If it does not, ip the servo reversing switch on your transmitter to change the direction.
1) Completely charge your trans­mitter and receiver batteries before your rst day of ying.
2) Check every bolt and every glue joint in the RV-8 ARF 35-40cc to en- sure that everything is tight and well bonded.
3) Double check the balance of the airplane. Do this with the fuel tank empty.
4) Check the control surfaces. All should move in the correct direction and not bind in any way.
5) If your radio transmitter is equipped with dual rate switches double check that they are on the low rate setting for your rst few ights.
D) Check the throttle. Moving the throttle stick forward should open the carburetor barrel. If it does not, ip the servo reversing switch on your trans­mitter to change the direction.
E) From behind the airplane, look at the aileron on the right wing half. Move the aileron stick to the right. e right aileron should move up and the other aileron should move down. If it does not, ip the servo reversing switch on your transmitter to change the direction.
We wish you many safe and enjoyable ights
6) Check to ensure the control sur­faces are moving the proper amount for both low and high rate settings.
7) Check the receiver antenna. It should be fully extended and not coiled up inside the fuselage.
8) Properly balance the propeller. An out of balance propeller will cause excessive vibration which could lead to engine and/or airframe failure.
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with your RV-8 ARF 35-40cc.
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If you have any queries, or are interested in our products,
please feel free to contact us
Factory : 12/101A - Hamlet 4 - Le Van Khuong Street - Dong anh Ward -
Hoc Mon District - Ho Chi Minh City - Viet Nam.
Oce : 62/8 Ngo Tat To Street - Ward 19 - Binh anh District - Ho Chi Minh
City - Viet Nam
Phone : 848 - 86622289 or 848- 36018777 Website : www.SeagullModels.com Email : [email protected] Facebook : www.facebook.com/SeaGullModels.
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