Screamer 40 - Value Hobby · removed with the gentle application of heat to the covering material...

Screamer 40

Almost‐Ready‐to‐Fly

INSTRUCITION MANUAL

Specifications

Wingspan: 49in (1250mm) Length: 47in (1200mm)

Wing Area: 465sq in (30sq dm) Flying Weight (EP): Approx. 4.7lbs (2100g)

www.valuehobby.com/js-40.html

Dear Customer, Congratulations on your purchase of JS-40 ARF from Value Hobby. We thank you for your generous support,

and hope you enjoy your new airplane.

At Value Hobby, we hope to offer competitive prices, good performance, and products that you can setup and

use with ease. That’s why we extensively researched and tested this airplane, and suggested all the products

necessary for you to setup properly. We understand that you have many choices when purchasing, and we are

grateful you choose to buy from us.

As vendors, one of the most gratifying things for us is to hear from our customers. We would welcome any

suggestion to help us improve. Please make us aware of any errors and imperfections in the airplane or the

instructions, or about the setup that we suggested. We hope you’ll find our setup suggestions to be helpful, and

enjoy flying your new airplane. Please feel free to contact us at (630) 948‐0947 or email us at

[email protected]

Disclaimer By purchasing and/or building this model, user assumes ALL liability and risk involved with this product. This

model should be built and flown by an experienced pilot and only flown at AMA sanctioned sites.

Value Hobby guarantees this model to be free of defects in materials and workmanship at the date of purchase.

This warranty does not cover any parts damaged by use or modifications. In no way shall Value Hobby’s liability

exceed the original cost of the purchased model. Further, Value Hobby reserves the right to modify this

warranty without notice. Value Hobby has no control over the final stages of assembly or the material used for

the final assembly. No liability shall be assumed nor materials used for the final user‐assembled product. By the

act of using the final product the user accepts all resulting liability. Value Hobby, as a R/C product vendor,

provides a top quality airplane and instructions to complete the model. The quality and flight characteristics of

the finished model depend greatly on how it is built; we cannot guarantee the performance for the completed

model and representations are expressed or implied as to the performance of the completed model. If the buyer

is not prepared to accept the liability associated with the use of this product, the buyer is advised to return this

kit immediately, in new and unused condition.

Safety in Assembly During assembly of this aircraft, you will be asked to use sharp knives and hobby adhesives. Please follow all

safety procedures recommended by the manufacturers of the products you use, and always follow these

important guidelines:

ALWAYS protect your eyes when working with adhesives, knives, or tools, especially power tools. Safety

glasses are the best way to protect your eyes.

ALWAYS protect your body, especially your hands and fingers when using adhesives, knives, or tools, especially

power tools. Do not cut toward exposed skin with hobby knives. Do not place hobby knives on tables or benches

where they can roll off or be knocked off.

ALWAYS have a first‐aid kit handy when working with adhesives, knives, or tools, especially power

tools. ALWAYS keep hobby equipment and supplies out of the reach of children.


Safety in Flying This is NOT a toy! It is a very high‐performance RC airplane capable of high speeds and extreme maneuvers. It

should only be operated by a competent pilot in a safe area with proper supervision.

ONLY fly your aircraft in a safe, open area, away from spectators and vehicles–and where it is legal to

fly. NEVER fly over an unsafe area, such as a road or street.

Never fly too close to yourself or spectators. Never run your motor inside a house or building with the propeller attached – Remove the prop for safety.

Required Items CA Glue – Thin and Thick Epoxy glue Hobby Knife Small Phillips Screwdriver Set Metric Allen Wrenches Scissors Small Pliers Wire Cutters Masking tape Optional – Heat gun

Before Starting Assembly Examination Unpack your airplane and examine the components. Check for damage of any kind. If you see any

damage, please contact Value Hobby immediately.

Covering Your airplane was packed in plastic at the factory without any wrinkles in the covering. You may notice some

wrinkles now; more likely, you will notice a few in a day or two or the first time you take the plane out to the

flying field. These wrinkles are the result of wood shrinkage and/or expansion. Balsa wood changes size and

shape slightly as it is exposed to varying humidity in the air. This is a natural property of balsa wood. As your

airplane adjusts to the weather in your part of the world, wrinkles may appear and disappear. Wrinkles may be

removed with the gentle application of heat to the covering material on your airplane. The best tool to use is a

hobby heat gun. Apply the heat gently: the covering material will shrink as you apply the heat, and this will

remove the wrinkles. BE CAREFUL! Too much heat applied too quickly can damage the covering, either by

causing it to pull away from the wood at seams and corners or even by melting it. The covering will shrink at low

temperature with patient application of heat.

Wrinkles in the covering DO NOT affect flight performance. Remove the canopy before attempting to use heat on your covering! The canopy is made of

thermo‐activated plastic and WILL deform with the application of heat. Do not apply heat to the canopy.

If you need to clean your airplane, we recommend using a damp towel. The paint used on the canopy and cowl is not safe for all cleaners. In particular, DO NOT use alcohol on these parts, it will remove the paint.


RECOMMENDED RADIO EQUIPMENT

Product SKU Quantity

Radio Flysky I6 6CH transmitter and receiver set FLY-RC-4572 1

Servo Towerpro MG996R standard servo TWP-SV-0372 5(nitro)

4 (electric)

Y-Harness Universal Servo Y-Harness 12-Inch (Futaba "J" and JR Compatible) AMS-AC-0870 1

RECOMMENDED POWER SETUP

Product SKU

Motor Gforce G32 4250-800KV brushless motor XYH-MT-0177

ESC Hobbywing Flyfun 60A OPTO Brushless ESC HWG-SC-0241

BEC Hobbywing UBEC-3A HWG-SC-0258

Battery GForce Elite Series 40C 3300mAh 4S 14.8V LiPO FLM-LP-1819

Prop 13 x 6.5 E GFH-MP-2951

OPTIONAL ACCESSORIES:

Product SKU

Charger GT Power C6 6S LiPO Charger GTP-CH-1427

Thin CA Glue Quickie Thin CA VHB-AC-2097

Medium CA Glue Quickie Medium CA VHB-AC-2098

Watt Meter GT Power 130A Watt Meter GTP-AC-0591

Connector T Connector Female AMS-AC-1914

T Connector Male AMS-AC-1913

LiPO Bag LiPO charging bag RFI-AC-2725


Main Parts of Airplane

Cowling x 1 Fuselage w/ canopy x 1 Wing panel x 2 Horizontal stabilizer x 1 Elevator half x 2 Fin x 1 Rudder x 1


Small Parts and Accessories

Cowling mounting screw M3 x 12 4pcs Rail mounts for engine 1pair Mounting screws for rail mounts M4 x 20mm 4pcs M4 washer 10pcs

Motor box 1pcs Mounting screw for motor and motor box: socket head screw M4 x 16 8pcs Lock nut for motor M4 4pcs M4 washer for motor 4pcs

Fuel tank 240cc 1pcs Zip tie 2pcs

Main landing gear 1pcs Mounting screws for main landing gear socket head M4 x 16mm 3pcs Screw for wheel pants: M2.5 x 12mm self-tapping screw 2pcs Wheel 55mm diameter 2pcs Axel M6x35mm 2pcs M6 locknut 2pcs Wheel collar 4pcs Wheel pant 1pair

Wing tube 19 x 375mm 1pcs Wing screw M3 x 15mm 2pcs Aileron push rod 1.8 x 125mm 2pcs Elevator pushrod 1.8 x 600m 1pcs Rudder pushrod 1.8 x 600mm 1pcs Throttle push rod 2.0 x 350mm 1pcs The elevator joiner wing 1pcs

Push rod connector 5pcs Control horn 4 set Screw 1 for control horn M2 x 12mm 4pcs Screw 2 for control horn M2 x 20mm 4pcs

Tailwheel assembly 1pcs

Servo hatch 1 pair Screw for mounting servo hatch: self-tapping screw M2 x 10mm 12pcs Mounting block 4pcs CA hinges 17pcs


Section1. Aileron Installation Step1. Use the hobby knife to remove the covering for the servo opening.

Step2. Place four hinges into the pre-cut slots in the wing. Apply thin CA to the hinges. Make sure the hinges are glued to the wing.

Step3. Slide the aileron and wing together. The gap between the aileron and wing should be infinitely small, approximately 1/41-inch. Apply the thin CA to the hinges again. Make sure the aileron is glued to the hinges.

Step4. Repeat steps 1 through 7 for remaining aileron.

Section2. Aileron Servo & Linkage Installation Step1. Prepare an aileron servo by installing servo horn, grommets and brass eyelets.

Step2. Put the servo in position on the servo hatch, and use a pen to trace outline of the servo. (It is not necessary to position the servo horn in the middle of the slot because the aileron only needs a small control throw; you can move the servo to the left a little.)

Step3. Use thin CA to glue the mounting blocks to the servo hatch.


Step4. Install the servo onto the servo mounting using the screws provide with the servo.

Step5. Install the pushrod connector to the servo horn.

Step6. Locate the aileron pushrod (1.8 x 125mm) and connect it to the second hole on the servo horn.

Step7. Slide the push rod through the pushrod connector and position the control horn on the aileron. Use a pen to mark the mounting holes for the control horn.

Step8. Use the M2 x 12mm socket head screws and the control backplate to install the control horn onto the aileron.


Step9. With the aileron centered, tighten the screw on the push rod connector.

Step10. Cut off the excess push rod.

Step11. Repeat steps 1 through 10 for the remaining aileron servo.

Section3. Stabilizer and Elevator Installation Step1. Remove the covering from the fuselage as shown.

Step2. Slide the horizontal stabilizer into the slot in the fuselage, with the leading edge pushed forward in the slot. Center the stabilizer in the opening by measuring the distance from the fuselage to each tip. The stabilizer is aligned when both measurements are identical.


Step3 Check the distance from each stabilizer tip to each wing tip. These measurements must also be equal.

Step4 The last alignment step is making sure the wing and stabilizer are parallel. If they are not, lightly sand the opening in the fuselage for the stabilizer until the stabilizer rests parallel to the wing.

Step5 Use a pen to trace the outline of the fuselage on the bottom and top of the stabilizer.

Step5. Remove the stabilizer from the fuselage, and use hobby knife to remove the coverings along the line drawn in the previous step.

Step6. Place the elevator joiner wire into the slot.


Step7. Apply the epoxy to the exposed area on the bottom and top of the stabilizer, slide the stabilizer back into the slot and double-check the alignment of the stabilizer.

Step8. Insert the hinges into the elevator and apply thin CA to the hinges.

Step9. Test fit the elevator and stabilizer together, Mark on the elevator where the elevator joiner wire will be insert.

Step10. Drill the hole on the elevator for the elevator joiner wire.

Step11. Attach the elevator to the stabilizer through the joiner wire and CA hinges. Apply epoxy to the groove and holes for the joiner wire, and apply thin CA to the hinges.


Section4. Vertical Tail and Tailwheel Installation Step1. Insert three CA hinges into the slots in the rudder. Apply thin CA to the hinges.

Step2. Prepare a tailwheel assembly as shown.

Step3. Cut a groove in the leading edge of the rudder to accommodate the landing gear wire, and drill a hole for the vertical shaft.

Step4. Apply epoxy in the groove and the hole for the tail gear wire, and then glue the tailwheel assembly to the rudder.

Step5. Glue the fin into position and use a Triangle to make sure the fin is perpendicular to the stabilizer.

Step6. Attach the rudder to the fin, and install the tailwheel to the fuselage using the screws provided with the tailwheel assembly.


Section5. Elevator and Rudder Servo Installation

Step1. Insert the elevator pushrod and rudder pushrod (1.8 x 600mm) into the guide tube in the fuselage.

Step2. Install elevator and rudder servo onto the fuselage using the screws provided with the servo.

Step3. Finish the rudder & elevator servo linkage installation using the same methods for aileron servos’.

Section6. Main Landing Gear Installation Step1. Use two wheel collars to install the wheel to the M6 x 35mm axle.

Step2. Insert the wheel into the wheel pant.

Step3. Use a M6 lock nut to attach the wheel to the landing gear.


Step4. Use a M2.5 x 12 self-tapping screw to secure the wheel pant to the landing gear.

Step5 Repeat steps through 1 to 4 for the remaining wheel.

Step6. Install the main landing gear to the fuselage using three M4 x 16mm socket head screws.

Section7. Wing Installation Step1. Attach the assembled wing panels to the fuselage using the aluminum wing joiner.

Step2. Use two wing screws to secure the wing panels to the fuselage as shown.

Step3. Attach the canopy to the fuselage.


Section8. Motor Installation Step1. Prepare a motor with prop adapter installed

Step2. Install the motor box onto the fuselage using four M4 x 16mm socket head screws.

Step3. Install the motor to the motor box using four M4 x 16mm socket head screws, f our M4 locknut and four M4 washers.

Step4. Test fit the cowling to the fuselage.

Step5. Use four M3 x 12mm screws to secure the cowling to the fuselage.

Step6. Slide the spinner backplate onto the prop shaft and install the prop.

Step7. Install the spinner.


Section9 Recommended CG For the first flights, the recommended center of gravity location is 115mm (4-1/2inch) behind the leading edge of the wing against the fuselage.

Recommended control throws 1. Low/Precision Rates and corresponding

exponential Aileron 20 degree up/down Expo: 40% Elevator 20 degree up/down Expo: 25% Rudder 30 degree left/right Expo: 30% 2. High/3D Rates and corresponding

exponential Aileron 45 degree up/down Expo: 80% Elevator 60 degree up/down Expo: 80% Rudder 50 degree left/right Expo: 60% Note that Futaba and Hitec radios require NEGATIVE exponential, while JR and Spektrum use positive exponential.

Range test your radio Step1. Before fly, be sure to range check your radio as manufacturer’s instruction manual of your radios Step2. Double-check all controls (aileron, elevator, rudder and throttle) move in the correct direction. Step3. Be sure that your LiPO battery is fully charged.

2016-07-11

Screamer 40 - Value Hobby · removed with the gentle application of heat to the covering material...

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Transcript of Screamer 40 - Value Hobby · removed with the gentle application of heat to the covering material...