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Fei Bao SU-27 User Manual

Fei Bao SU-27
21 pages
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DISCLAIMER:
THIS IS NOT A TOY. This is a high-performance
miniature aircraft, capable of high speeds and damage to
life, limb, and property. The manufacturer and its
distributors cannot control how you assemble this model,
what equipment you use to fit it out, or how you fly it, and
can assume no liability whatsoever for any damages that
may occur when you fly your aircraft. By assembling this
model, you are agreeing to indemnify and hold blameless
the manufacturer and/or his agents from any and all torts
and liability associated with the use of this product.
Please inspect all parts before beginning assembly. If
any parts appear to be suspect, contact your dealer or the
manufacturer for repair or replacement BEFORE you
begin. Once you have assembled the aircraft, you are
the pilot in command and assume any and all
responsibility for the use of the model and any damages
that might occur by flying or attempting to fly this aircraft.
R/C model jets require a high level of skill in both their
assembly and their flying. If you do not feel confident in
either your building or flying skills, PLEASE seek
assistance from more experienced modelers. It is a wise
idea, no matter what level of skills you possess, to have a
second experienced modeler go over your installation
after assembly. A second set of eyes may spot a problem
you have missed. If you have not flown a model like this
before, it is HIGHLY recommended that you get an
experienced turbine pilot to do your maiden flight. Very
often, the first few seconds of a maiden flight are critical
until the aircraft is trimmed out, and having an
experienced pilot at the controls can make the difference
between a wrecked aircraft and once that enjoys many
hundreds of flights. Be sure to select a suitable field for
flying...take the time to find a large paved runway if at all
possible, especially for test flights, until you feel
comfortable getting the aircraft in and out of smaller grass
fields.
BEFORE YOU BEGIN:
Keep this in mind as you proceed:
Look at EVERY assembly step you finish, and ask
yourself:
"Is this going to crash my airplane?"
A chain is only as strong as its weakest link, and this is a
high-performance aircraft that will be very intolerant of
sloppy assembly techniques. Even the smallest
component is important and can cause the loss of your
FB Su-27
Page 1
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Fei Bao SU-27 Specifications

General IconGeneral
BrandFei Bao
ModelSU-27
CategoryToy
LanguageEnglish

Summary

Disclaimer and Liability

Preparation and Safety

Critical Assembly Checks

Emphasize careful assembly, checking each step to avoid potential crashes due to weak links.

Introduction to the Model

Adhesives and Gluing

Recommended Adhesive: Loctite Hysol 9462

Specifies Loctite Hysol 9462 as the superior adhesive due to its thixotropic properties.

Adhesive Application Tools

Recommends specific dispensing guns and long-type mixing nozzles for optimal adhesive application.

Pneumatic Systems Operation

Securing Pneumatic Lines

Advises securing airlines with tie wraps to prevent kinks and damage.

Proper Airline Cutting Technique

Emphasizes cutting airline ends dead square for reliable, leak-free pneumatic system operation.

Matching Airline Lengths

Ensures left and right matching airlines are the same length for balanced action.

Important Notes and Updates

Instruction Basis and Revisions

Notes that instructions are based on a prototype and may differ from production kits.

Center of Gravity and Control Throws

Recommends checking with manufacturer for current CG and control surface throw data.

Airframe Preparation

Bypass Module Removal

Instructs to remove bypass modules attached by two bolts accessed through side hatches.

Engine Hatch Cover Removal

Advises removing and labeling engine hatch covers for side and orientation.

Gear Door Cylinder Leak Check

Details checking gear door air cylinders for leaks using a hand pump and securing loose connections.

Mounting Stabs and Wings

Guides inserting stabs, wings, and vertical stabs into mounts and checking for security.

Securing Mounts with Aeropoxy

Recommends applying Aeropoxy around mounts for firm positioning, avoiding bearings.

Glue Joint Integrity Check

Instructs checking accessible glue joints and reinforcing them, especially around horizontal stab bearings.

Joining Fuselage Halves

Details joining the fuselage halves and securing them with five bolts.

Air Systems Installation

Nose Gear Removal

Instructs to remove the nose gear from the aircraft for servicing.

Nose Steering Servo Centering

Guides centering the nose steering servo and attaching a heavy-duty steering arm without rubber mounts.

Nose Gear Air Line Check

Advises checking nose gear air lines for kinks or bends while the gear is removed.

Retract Unit Security Check

Ensures security of screws and C clamps on struts and retract units.

Landing Gear Mounting Plate Upgrade

Suggests upgrading wood screws to cap head bolts and blind nuts for landing gear mounting.

Nose Gear Door Alignment

Details checking nose gear door closure over the mud guard and shimming if necessary.

Removable Board for Air System Components

Recommends installing air system components (servos, valves) on a removable board in the nose.

Air Supply Configuration

Door Sequencing Setup

Requires setting up sequencing for the doors, which remain open with gear extended on full-scale aircraft.

Connecting Air Lines

Guides connecting air lines to all door cylinders, retracts, brakes, and speed brake.

Pneumatic System Testing

Instructs testing the pneumatic system for operation and leaks, followed by adjustments.

Horizontal Stabilizer Installation

Horizontal Stab Servo Centering

Guides centering horizontal stab servos and matching servo arms closely.

Metal Servo Arms for Stabilizers

Suggests using metal servo arms for added security, replacing clevis with ball link.

Servo Heat Shielding

Advises creating a heat shield for servos, using insulation and aluminum tape, ensuring air circulation.

Attaching Stabilizer Control Arms

Details inserting stab spars into control arms, using washers for spacing, and tightening bolts securely.

Rudder Servo Access Hatch

Control Linkage Installation

Guides installing linkages onto servo arms and bearing box control arms.

Horizontal Stab Movement Check

Ensures horizontal stabs have full top and bottom movement, adjusting as needed.

Vertical Stab Fit and Clearance

Advises test fitting vertical stabs, trimming for control arm clearance if necessary.

Vertical Stabilizer and Rudder Assembly

Rudder Hinge Point Gluing

Details filling hinge point holes with Aeropoxy and inserting rudders into vertical stabs.

Setting Rudder Hinge Depth

Guides setting appropriate rudder hinge depth by aligning with the exhaust tube and hinge cover.

Rudder Servo Arm Installation

Instructs locating neutral and installing servo arms for rudder servos.

Rudder Servo Wiring and Mounting

Details dropping rudder servos into pockets, routing wires, and securing with screws, avoiding over-drilling.

Rudder Control Horn Slotting

Control Horn Gluing Preparation

Details taping around the slot and filling it with Aeropoxy for control horn installation.

Control Horn Installation and Fillet

Instructs roughing up the control horn surface and inserting it into the slot, creating a fillet.

Linkage Hatch Clearance

Advises trimming the hatch cover for linkage and arm clearance before reinstalling.

Servo Extension Installation

Recommends installing servo extensions for elevator and rudder servos, securing them away from the exhaust pipe.

Exhaust Cone Installation

Guides installing exhaust cones by slipping them over bolts and rotating until seated.

Wing Assembly and Control Surfaces

Flap Hinge Point Gluing

Details filling flap leading edge hinge point holes with Aeropoxy.

Flap Throw Setting

Instructs inserting flaps and pressing forward to achieve approximately 45 degrees of throw.

Flap Servo Arm Installation

Guides centering flap servos and installing servo arms in opposing locations.

Wing Servo Mounting

Details installing servos in wings using screws, avoiding rubber mounts and brass eyelets.

Servo Arm to Control Surface Alignment

Advises carefully measuring distance to servo arm and marking position for control surface linkage.

Flap Control Horn Slot Marking

Explains marking flap slot for control horn, ensuring perpendicularity to the hinge line.

Flap Control Horn Slotting

Control Arm Ball End Drilling

Details drilling the control arm for the ball end bolt, using appropriately sized drills.

Flap Control Horn Gluing Prep

Advises taping around the flap slot and filling it with Aeropoxy for control horn installation.

Flap Control Horn Installation

Instructs roughing up the control horn surface and inserting it into the slot, creating a fillet.

Flap Servo Extension Routing

Guides running flap servo extensions to the receiver location.

Wing-to-Fuselage Fit Check

Advises test fitting the wing to the fuselage, ensuring flap root edge clearance.

Engine Installation Procedure

Pipe Alignment and Tab Marking

Details straightening pipe tabs, inserting pipe into aft former, and marking tab positions.

Drilling Pipe Mounting Holes

Guides drilling a 1/16 inch hole at marked positions for pipe mounting.

Triangular Mounting Plate Fabrication

Instructs making a triangular mounting plate from scrap ply and gluing it between the engine rail and aft former.

Engine and Pipe Securing

Engine Positioning and Rail Mounting

Details positioning the engine on mounting rails and securing it, suggesting supplemental plates if needed.

Engine to Pipe Clearance Check

Confirms engine to pipe clearance is set at manufacturer specifications.

Engine Angle Adjustment

Checks engine angle to match exhaust pipe slope, using shims under the front tab if necessary.

Pipe Centering and Tab Attachment

Raises the pipe, checks centering on the exhaust cone, and permanently attaches tabs to triangular plates.

Fuel System Component Placement

Guides placement of engine valves, fuel pump, and ECUs in the fuel tank compartment.

Intake Clearance Check

Temporarily inserts intakes to ensure adequate clearance for tubing and wiring.

Fuel System Plumbing

Valve/Pump Mounting Plate Fabrication

Details cutting a 2x6 inch ply plate for mounting valve/pump components.

Wheel Bay Component Mounting

Advises temporarily positioning plates in the wheel bay using velcro, ensuring clearance for retracts.

Auxiliary Fuel Tank Installation

Explains sliding auxiliary tanks through the intake opening and checking/trimming for clearance.

Final Plumbing and Intake Installation

Intake Clearance and Fixture Marking

Temporarily positions intakes for clearance and marks pickup/vent fixture positions.

Tank Removal, Plumbing, and Leak Check

Instructs removing tanks, plumbing, leak checking, and reinstalling them.

Vent and Fuse Drilling

Guides drilling the fuselage for vents and plumbing the system.

Permanent Intake Reinstallation

Details permanently reinstalling intakes, ensuring no lines/wires are pinched, and securing with bolts.

UAT and Main Tank Setup

UAT Positioning

Recommends positioning UATs in the forward fuse, flanking the nose gear cylinder.

UAT Platform Creation

Instructs making a platform for UATs and affixing it to the forward former with velcro.

Main Tank Stopper Check

Advises disassembling main tank stoppers, checking for kinks, obstructions, and secure connections.

Main Tank Pickup Line Bending

Details bending pickup lines on the aft main tank to clear the forward main tank.

Main Tank Reassembly and Leak Check

Guides reassembling both main tanks and performing a leak check.

ECU Battery and Tank Blocking

ECU Battery Installation

Details fitting ECU batteries into pockets, wrapping them in foam, and ensuring proper wiring.

Main Tank Plumbing and Connections

Instructs installing and plumbing main tanks, connecting aux tanks to vents and mains to UATs.

Fuel Line Length Management

Ensures all fuel lines for both sides are of equal length, looping where necessary.

Tank Blocking with Foam

Advises blocking tanks with foam to ensure a snug fit and prevent movement.

ECU Unit Positioning and Wiring

Guides positioning ECU units and completing their wiring.

Completing Construction

Ventral Fin Installation

Details gluing ventral fins in place, drilling holes for secure pinning, and ensuring equal angles.

Aft Fuselage Strake Attachment

Instructs installing the aft fuse strake by attaching it with two bolts from underneath.

Pitot Tube Gluing

Guides gluing the pitot tubes to the forward fuse on either side of the cockpit.

Engine Cover Reattachment

Advises reattaching the engine covers.

Cockpit Interior Finishing

Details installing the glare shield and pilot figure in the cockpit tub.

Canopy Fit Adjustment

Instructs checking the fit of the canopy and adjusting as needed.

Throws and CG Recommendations

CG Setting for First Flight

Sets CG at 8.5 inches aft of the wing/fuse junction, recommending manufacturer verification and balance spreadsheets.

Control Surface Throws

Specifies maximum elevon throws (40mm elevator, 30mm aileron) and maximum rudder travel.

Flight Rate Settings

Recommends setting three rates for elevator and aileron, using 40% exponential for initial flights.

Flap Control Setup

Suggests using a slider control for flaps, allowing incremental deployment.

First Flights Guidance

Pre-Flight Checks and Spotters

Emphasizes no adverse weather, checking airplane, having a spotter and timekeeper.

Initial Flight Parameters

Advises keeping gear down, advancing throttles slowly, and making shallow turns.

Trim and Rate Establishment

Focuses on establishing trim and rates during the first few laps.

Flap Deployment Test

Tests flaps at safe altitude, monitoring for loss of control and adjusting setting if issues arise.

Subsequent Flights

Gear Retraction and Normal Flight Settings

Once comfortable, retract gear and find normal flight settings.

Fuel Management and Timer Setting

Monitors residual fuel after landing and sets a timer for comfortable reserve.

Airframe Stress Limits

Avoids stressing the airframe with high G maneuvers until confident with the model.

Gradual Familiarization

Recommends flying only in good weather until the model is proven and confidence is established.