instruction manual book - ripmax · grob g-115e tutor t1 - item code: bh123. instruction manual...

Instruction Manual book

Made in Vietnam.

SPECIFICATION

ITEM CODE BH123.

Wingspan : 1,800 mm 70.87 in. Length : 1,385 mm 54.53 in. Weight : 4.3 kg 9.46 Lbs. Radio : 08 channels. Servo : 09 servos Engine : 55 - 2 Stroke 15-20 CC GasElectric Motor: RIMFIRE.80 Battery: 18.5 -22.2V(5-6S LIPO)

Propeller: 15X 6Speed control: 60A.

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GROB G-115E TUTOR T1 - Item code: BH123 . Instruction Manual

This instruction manual is designed to help you build a great flying aeroplane. Please read thismanual thoroughly before starting assembly of your GROB G-115 TUTOR T1.Use the parts listingbelow to identify all parts.

WARNING.

Please be aware that this aeroplane is not a toy and if assembled or used incorrectly it iscapable of causing injury to people or property. WHEN YOU FLY THIS AEROPLANE YOUASSUME ALL RISK & RESPONSIBILITY.

If you are inexperienced with basic R/C flight we strongly recommend you contact your R/C supplierand join your local R/C Model Flying Club. R/C Model Flying Clubs offer a variety of trainingprocedures designed to help the new pilot on his way to successful R/C flight. They will also be ableto advise on any insurance and safety regulations that may apply.

TOOLS & SUPPLIES NEEDED.

Thick 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. Thread-lock. Paper towels.

Some more parts.

HARDWARE PACK

COWLING.Landing gear.....

To avoid scratching your new airplane, do notunwrap the pieces until they are needed forassembly. Cover your workbench with an oldtowel or brown paper, both to protect the air-craft and to protect the table. Keep a couple ofjars or bowls handy to hold the small parts af-ter you open the bag.

Please trial fit all the parts. Make sure you havethe correct parts and that they fit and arealigned properly before gluing! This will assureproper assembly.GROB G-115E TUTOR T1 ARFis hand made from natural materials, everyplane is unique and minor adjustments mayhave to be made. However, you should findthe fit superior and assembly simple.The painted and plastic parts used in this kitare fuel proof. However, they are not tolerantof many harsh chemicals including the follow-ing: paint thinner, C/A glue accelerator, C/A gluedebonder and acetone. Do not let these chemi-cals come in contact with the colors on thecovering and the plastic parts.

PARTS LISTING.

FUSELAGE ASSEMBLY (1) Fuselage.

WING ASSEMBLY

(1) Right wing half with pre-installedaileron.

(1) Left wing half with pre-installedaileron.

Tail section assembly

(1) Vertical stabilizer with pre-installed rudder.

(1) Horizontal stabilizer with pre-installed elevator halves.

SUGGESTION.

NOTE.

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Caution: this model is not a toy!If you are a beginner to this type of powered model, please ask an experienced model flyer for helpand support. If you attempt to operate the model without knowing what you are doing you couldeasily injure yourself or somebody else. Please keep your safety and well-being in mind at alltimes.Important: before you start constructionEven if you have already built a large number of RC models please read right through theseinstructions and check all the kit components against the parts list. We have taken great trouble tokeep construction as simple as possible, without making any compromises in the area of safety.Note regarding the film coveringMinor creases or bubbles may develop in the film covering due to major fluctuations in weatherconditions (temperature, humidity etc.); in rare cases you may even find a slight warp in acomponent. These minor faults are in the nature of film-covered built-up wooden structures, andcan easily be corrected using a heat gun, as commonly used for modelling.Creases: Blow warm air over the area and rub down with a soft cloth.Wing warp: Hold the panel twisted gently in the opposite direction to the warp, and apply

warm air to remove the creases from the covering.Caution! do not heat the film more than is absolutely necessary. If the air or the iron is too hot, thefilm may melt and holes may be formed.This model is highly pre-fabricated and can be built in a very short time. However, the work whichyou have to carry out is important and must be done carefully. The model will only be strong andfly well if you complete your tasks competently - so please work slowly and accurately.When self-tapping screws have to be screwed into wood, apply a little white glue toprevent them shaking loose: just squirt white glue into the hole and fit the screw.

+ This is not a toy + Be sure that no other flyers are using your radio frequency. + Do not smoke near fuel + Store fuel in a cool, dry place, away from children and pets. + Wear safety glasses. +The glow plug clip must be securely attached to the glow plug. + Do not flip the propeller with your fingers. + Keep loose clothing and wires away from the propeller. + Do not start the engine if people are near. Do not stand in line with the side of the propeller.+ Make engine adjustments from behind the propeller only.Do not reach around the spinning propeler.

SAFETY PRECAUTION.

REPLACEMENT LARGE PARTS

B. B.

F.

D.

C.

E.

A.

G. D.

A. Cowling.

B. Wing panel. C. Fuselage.D. Horizontal stabilizer. G. Decal sheet.

E. Rudder

F. Aluminium wing dihedral brace.

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1) Install the rubber grommets and brasseyelets onto the aileron servos.

1.INSTALLING THE AILERON SERVOS.

I. AILERON.

C/A glue

Aileron

Flap. Aileron

REPLACEMENT SMALL PARTS

3. Wheels.

2. Wheel pants.

6.Ply wood of Vertical stabilizer.

4. Nose gear set.

11. Spinner.

1. Aluminium landing gear.

7. Fuel Tank.

8. Tie wrap

10. Plastic part bottom of Fuselage

Bottom side

5. Plastic parts for elevator and rudder pushrod.

9.Engine mount ply of wood .

1. 1.

3. 3.

8.

2.

4.

5.

7.

10.

9.

11.

6.

a. b. c.

3x 15mm

5


C/A glue

Flap. C/A glue

C/A glue

C/A glue

C/A glue

C/A glue

C/A glue

2) Using a modeling knife, remove the cov-ering at possition show below.

Bottom of wing.

R e m o v ecovering

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4. Drill 1,5mm pilot holes through the blockof wood for each of the four mounting screwsprovided with the servo. Install servo into ai-leron servo tray as same as picture below.

3. Using the thread as a guide and usingmasking tape, tape the servo lead to the endof the thread: carefully pull the thread out.When you have pulled the servo lead out, re-move the masking tape and the servo leadfrom the thread.

5. Using the thread as a guide and usingmasking tape, tape the servo lead to the endof the thread: carefully pull the thread out.When you have pulled the servo lead out, re-move the masking tape and the servo leadfrom the thread.

Secure.

Electric wire

thread

Servo tray.

Secure.

2x10mm.

Install aileron control horn as sameas picture below.

Aileron control horn

INSTALLING THE AILERONCONTROL HORN.

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Electric wire

Repeat the procedure for the other winghalf.

2x10mm.

A+B PLUS glue

Repeat the procedure for the other winghalf.

Control horn.

A+B EpoxyPLUS glue

A+B EpoxyPLUS glue

Installing the aileron linkages as pictures below.

50 mmM2

INSTALLING THE AILERONLINKAGES.

1.INSTALLING THE FLAP SERVOS.

II. FLAP

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2.INSTALLING THE FLAP CONTROL HORN.

Secure

Installing the aileron linkages as pictures below.

A+B EpoxyPLUS glue

Flap control horn

Flapcontrol horn

3.INSTALLING THE FLAPLINKAGES.

50mm

Mark point

Bottom side

M2

Drill 5.2mmhole

5x40 mm.

PARTS REQUIRED

1) Assemble and mounting the wheel pantsas shown in the following pictures.

INSTALLING THE MAIN LANDING GEAR.

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2) A drop of C/A glue on the wheel collarscrews will help keep them from coming loseduring operation.

Remove wood

THERE ARE TWO OPTIONS: 1. ELECTRIC MOTOR 2. ENGINE MOUNT.

1. OPTION 1: ELECTRIC MOTOR

Secure.

3 x 15 mm.

Secure.

Repeat the process for the other wheel.

INSTALLING THE ENGINE MOUNT.

INSTALLING ELECTRIC MOTOR.

3x 15mm

10


3x 15mm

secure

secure

3x 15mm

Drill a hole3mm diameter


11


INSTALLING THE ENGINE.

Front view

Battery

Front view

Secure

5x 70mm

See pictures below:

2. OPTION 2: ENGINE MOUNT


INSTALLING THE ENGINE MOUNT.

12


Throttle servo.

Throttle cable.

Right side.

Secure.

INSTALLING THE THROTTLE - CABLE.

1. Install one adjustable metal connectorthrough the third hole out from the center ofone servo arm, enlarge the hole in the servoarm using a 2mm drill bit to accommodate theservo connector. Remove the excess mate-rial from the arm.

After installing the adjustable metal con-nector apply a small drop of thin C/A tothe bottom nut. This will prevent the con-nector from loosening during flight.

Throttle cable.

Throttle servo.

Electric power.

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INSTALLING THE STOPPER ASSEMBLY 1) The stopper has been pre-assembledat the factory. 2) Using a modeling knife, cut one lengthof silicon fuel line (the length of silicon fuel lineis calculated by how the weighted clunk shouldrest about 8mm away from the rear of the tankand move freely inside the tank). Connect oneend of the line to the weighted clunk and theother end to the nylon pick up tube in the stop-per. 3) Carefully bend the second nylon tubeup at a 45 degree angle (using a cigarettelighter). This tube will be the vent tube to themuffler. 4) Carefully bend the third nylon tube downat a 45 degree angle (using a cigarette lighter).This tube will be vent tube to the fueling valve.

FUEL TANK.

Front view.

When the stopper assembly is installedin the tank, the top of the vent tube shouldrest just below the top surface of the tank.It should not touch the top of the tank.

6) When satisfied with the alignment ofthe stopper assembly tighten the 3mm x 20mmmachine screw until the rubber stopper ex-pands and seals the tank opening. Do not overtighten the assembly as this could cause thetank to split. 7) Using a modeling knife, cut 3 lengths offuel line 150mm long. Connect 2 lines to the 2vent tubes and 1 line to the fuel pickup tube inthe stopper.

5) Test fit the stopper assembly into thetank. It may be necessary to remove some ofthe flashing around the tank opening usinga modeling knife. If flashing is present, makesure none of it falls into the tank.

Secure

Tygon gas tubing notincluded only use forgasoline

silicon tube not included onlyuse for glow fuel.

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Adjust the nose gear steering arm until thearm is parallel with the fire wall.

Installing steering arm as follow

Secure.

NOSE GEAR INSTALLATION.

Do not secure the tank into place perma-nently until after balancing the airplane.You may need to remove the tank to mountthe battery in the fuel tank compartment.

Blow through one of the lines to ensurethe fuel lines have not become kinked insidethe fuel tank compartment. Air should flowthrough easily.

9) To secure the fuel tank in place, apply abead of silicon sealer to the forward area ofthe tank, where it exits the fuselage behind theengine mounting box and to the rear of the tankat the forward bulkhead.

8) Feed three lines through the fuel tankcompartment and through the pre-drilled holein the firewall. Pull the lines out from behindthe engine, while guiding the fuel tank intoplace. Push the fuel tank as far forward aspossible, the front of the tank should just abouttouch the back of the firewall.

Tie wrap.

Tie wrap.

Fuel Tank.

3 x 20 mm.

3 x20 mm.

Right side.

15


Secure.

SERVO NOSE GEAR INSTALLATION.

Bottom side.

Steering arm

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Secure.

COWLING.

1. Slide the fiberglass cowl over the en-gine and line up the back edge of the cowl withthe marks you made on the fuselage.

Servo arm

Connector.Top side

Bottom side.

Pushrod wire.

connector.

17


Mark point 1.

center line 1

Mark point 2.

Center line 2.

2. While keeping the back edge of thecowl flush with the marks, align the front ofthe cowl with the crankshaft of the engine. Thefront of the cowl should be positioned so thecrankshaft is in nearly the middle of the cowlopening. Hold the cowl firmly in place usingpieces of masking tape.

4. Install the muffler and muffler extensiononto the engine and make the cutout in thecowl for muffler clearance. Connect the fueland pressure lines to the carburetor, mufflerand fuel filler valve.

3. Slide the cowl back over the engineand secure it in place using four wood screws.See picture below.

center line 2

center line 1

Trim and cut.

18


Drill 2.5mm hole.

3x12mm

Secure.

Right side

Machine screw

Install the spinner backplate, propeller andspinner cone. The spinner cone is held inplace using two 3mm x 12mm wood screws.

INSTALLING THE SPINNER.

19


1. Install the rubber grommets and brasscollets into the elevator servo. Test fit the servointo the servo tray.

2. Mount the servo to the tray using themounting screws provided with your radio sys-tem.

Elevator servo.

180 mm

9 mm

See pictures below:

Bottom side.

Elevator servo.

Elevator servo.

HORIZONTAL STABILIZER.

Secure.

Secure.

ELEVATOR INSTALLATION.

SERVO INSTALLATION.

20


Epoxy glue.C/A glue.

Bottom side.

Elevator control horn install as same as theway of aileron control horn. Please see pic-tures below.

ELEVATOR CONTROL HORN INSTALLA-TION.

Epoxy glue.

elevator control horn.

21


Bottom side.

elevatorcontrol horn.

A+B EpoxyPLUS glue

Elevator and rudder pushrod install as sameas the way of aileron pushrod.

ELEVATOR PUSHROD INSTALLATION.

E l e v a t o rpushrod

M2 M2 lock nut.



Bottom side

M2 M2 lock nut.

22


C/A glue

Rudder control horn install as same as theway of aileron control horn. Please see pic-tures below.

RUDDER CONTROL HORN INSTALLA-TION.

Bottom side.

Bottom side.

Push


Rudder servo install as same as method ofelevator servo. See picture below:

Rudder servo.

Ruddercontrol horn

hinge

Rudder servo.

VERTICAL STABILIZER INSTALLATION.

23


Ruddercontrol horn

Ruddercontrol horn

Rudder pushrod install as same as the wayof aileron pushrod.

RUDDER PUSHROD INSTALLATION.

A+B EpoxyPLUS glue

M2 M2 lock nut.

Rudder pushrod.

Plastic parts of elevator andrudder pushrod.

Cut.

24


Bottom side.

C/A glue

C/A glue

Plastic part bottom of Fuselage

C/A glue

25


1. Cut out the switch hole using a modelingknife. Use a 2mm drill bit and drill out the twomounting holes through the fuselage side.

2. Secure the switch in place using thetwo machine screws provided with the radiosystem.

INSTALLING THE SWITCH.

C/A glue.

C/A glue.

C/A glue.

Bottom side.

26


3. Position the battery pack and receiverbehind the fuel tank. Use two tie wraps tohold the battery and receiver securely in place.As pictures below.

Do not permanently secure the receiverand battery until after balancing the model.

4. Using a 2mm drill bit, drill a hole throughthe side of the fuselage, near the receiver,for the antenna to exit.

Tie wrap.

1. Plug the servo leads and the switchlead into the receiver. You may want toplug an aileron extension into the receiverto makeplugging in the aileron servo lead easierwhen you are installing the wing . Plug thebattery pack lead into the switch.

2. Wrap the receiver and battery pack inthe protective foam to protect them from vi-bration. Use a rubber band or masking tapeto hold the foam in place.

Battery of receiver

Battery ofEngine

switch

switch Engine

INSTALLING THE RECEIVER AND BATTERY.

switch receiver

Receiver

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Locate the aluminium wing dihedral brace.

*** Test fit the aluminium tube dihedral braceinto each wing haft. The brace should slide ineasily. If not, use 220 grit sand around theedges and ends of the brace until it fits prop-erly.

Receiver.

WING ATTACHMENT.

605 mm

19 mm

Right wing.

Left wing.

3x 10mm.

Secure.

28


*If possible, first attempt to balance the modelby changing the position of the receiver bat-tery and receiver. If you are unable to obtaingood balance by doing so, then it will be nec-essary to add weight to the nose or tail toachieve the proper balance point.

1) It is critical that your airplane be bal-anced correctly. Improper balance will causeyour plane to lose control and crash.

THE CENTER OF GRAVITY IS LOCATED70MM BACK FROM THE LEADING EDGEOF THE WING.

2) Mount the wing to the fuselage. Using acouple of pieces of masking tape, place themon the top side of the wing 70mm back fromthe leading edge, at the fuselage sides.

BALANCING.

3. Turn the airplane upside down. Placeyour fingers on the masking tape and care-fully lift the plane .Accurately mark the balance point on the topof the wing on both sides of the fuselage. Thebalance point is located 70mm back from theleading edge. This is the balance point atwhich your model should balance for your firstflights. Later, you may wish to experiment byshifting the balance up to 10mm forward orback to change the flying characteristics.Moving the balance forward may improve thesmoothness and arrow- like tracking, but itmay then require more speed for take offand make it more difficult to slow down forlanding. Moving the balance aft makes themodel more agile with a lighter and snappier”feel”. In any case, please start at the loca-tion we recommend . With the wing attached to the fuselage, allparts of the model installed ( ready to fly), andempty fuel tanks, hold the model at themarked balance point with the stabilizer level.

Lift the model. If the tail drops when youlift, the model is “tail heavy” and you mustadd weigh* to the nose. If the nose drops, itis “nose heavy” and you must add weight* tothe tail to balance.

Bottom side.

Secure.

Secure.

Secure.

29


CONTROL THROWS.

1) We highly recommend setting up aplane using the control throws listed. 2) The control throws should be meas-ured at the widest point of each control sur-face.3) Check to be sure the control surfacesmove in the correct directions.

Ailerons : 15mm up 15 mm down Elevator : 12mm up 12 mm down Rudder : 20mm right 20mm left

PRE-FLIGHT CHECK.

1) Completely charge your transmitter andreceiver batteries before your first day of fly-ing.

2) Check every bolt and every glue joint inyour plane to ensure that everything is tightand well bonded. 3) Double check the balance of theairplane.

6) Properly balance the propeller.

We wish you many safe and enjoyableflights with your GROB G-115E TUTOR T1.

4) Check the control surface.

5) Check the receiver antenna . It shouldbe fully extended and not coiled up inside thefuselage.

Flap : 30mm

Ailerons Control

Flap control.

30

1212

2020

instruction manual book - ripmax · grob g-115e tutor t1 - item code: bh123. instruction manual...

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