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SUKHOI SU31
SUKHOI SU31
Wingspan: 61 in [1550mm]
Wing Area: 708 sq in [45.7 dm
Weight: 7.5 - 8.5 lb [3400 - 3850g]
Wing Loading: 24 - 28oz/sq ft [73 - 85 g/dm2]
Length: 51.5 in [1310mm]
Radio: Four-channel with 5 servos
Engine: .50 - .75 cu in [8 - 12cc] two-stroke,
.70 - .91 cu in [11. 5 - 15cc] four-stroke
Hobbico
®
guarantees this kit to be free from defects in
both material and workmanship at the date of purchase.
This warranty does not cover any component parts
damaged by use or modification. In no case shall
Hobbico's liability exceed the original cost of the
purchased kit. Further, Hobbico reserves the right to
change or modify this warranty without notice.
In that Hobbico has no control over the final assembly or
material used for final assembly, no liability shall be
assumed nor accepted for any damage resulting from the
use by the user of the final user-assembled product. By
the act of using the user-assembled product, the user
accepts all resulting liability.
READ THIS MANUAL BEFORE
STARTING CONSTRUCTION.
IT CONTAINS IMPORTANT
INSTRUCTIONS AND WARNINGS
CONCERNING THE ASSEMBLY
AND USE OF THIS MODEL.
Entire Contents © Copyright 2004
.50 - .91
.50 - .91
ASSEMBLY INSTRUCTIONS
]
2
WARRANTY
ARF
ARF
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 to the place of purchase.
To
make
a
warranty
claim, send the defective
part or item to Hobby
Services at this address.
Include a letter stating your name, return shipping address, as
much contact information as possible (daytime telephone
number, fax number, e-mail address), a detailed description
of the problem and a photocopy of the purchase receipt.
Upon receipt of the package the problem will be evaluated
as quickly as possible.
™
Hobby Services
3002 N. Apollo Dr. Suite 1
Champaign IL 61822
USA
1610 Interstate Drive
Champaign, Illinois
(217) 398-8970 ext. 2
airsupport@hobbico.com
HCAZ3047 for HCAA2090 V1.0
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Table of Contents
Related Manuals for Hobbico SUKHOI SU31 .50-.91 ARF
Summary of Contents for Hobbico SUKHOI SU31 .50-.91 ARF
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Page 1: Assembly Instructions
3002 N. Apollo Dr. Suite 1 part or item to Hobby Champaign IL 61822 In that Hobbico has no control over the final assembly or Services at this address. material used for final assembly, no liability shall be Include a letter stating your name, return shipping address, as... -
Page 2: Table Of Contents
Takeoff ......24 1. Your Hobbico Sukhoi SU31 should not be Flight ......24 considered a toy, but rather a sophisticated, working Landing . -
Page 3: Hardware And Accessories
This is a partial list of items required to finish the class condition, and a correctly sized engine and Hobbico Sukhoi SU31 that may require planning or components (fuel tank, wheels, etc.) throughout the decision making before starting to build. Order building process. -
Page 4: Optional Supplies And Tools
Frequently you can study photos Here is a list of optional tools mentioned in the in following steps to get another view of the manual that will help you build the Hobbico same parts. Sukhoi SU31. ·... -
Page 5: Kit Inspection
Product Support. When reporting defective or missing parts, use the part names exactly as they are written in the Kit Contents list. Hobbico Product Support • 3002 N Apollo Drive, Suite 1 • Champaign, IL 61822 Telephone: (217) 398-8970, ext. 2 • Fax: (217) 398-7721 E-mail: airsupport@hobbico.com... -
Page 6: Ordering Replacement Parts
“Kit Inspection” section on page 5. To locate a hobby dealer, visit the Hobbico web site at www.hobbico.com. Choose “Where to Buy” at the 2. Remove the tape and separate the ailerons and bottom of the menu on the left side of the page. -
Page 7: Assemble The Wing
ASSEMBLE THE WING INSTALL THE AILERONS Do the right wing first so your work matches the photos the first time through. 4. On the top of the wing locate the 1/2” [13mm] hole and cut the covering away. 5. Repeat steps 1 - 4 for the left wing. INSTALL THE AILERON SERVOS AND PUSHRODS 1. - Page 8 6. Be sure the aileron servo is centered. Enlarge the second outermost hole in the servo arm with a Hobbico Servo Horn Drill (or a #48 or 5/64” [2mm] drill bit). Center the aileron and align the wire 3. Install the servo into the wing. Center the pushrod with the hole in the end of the servo arm.
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Page 9: Join The Wings
JOIN THE WINGS 4. Cut the covering from the wing bolt holes on both the top and bottom of the wing. 1. Locate two hardwood wing joiners. Glue them together with 6-minute epoxy, forming one 1/4” [6mm] wing joiner. Set the joiner aside until the glue cures. 2. - Page 10 How to cut covering from balsa 9. Cut the covering from the wing bolt holes in the belly pan. Place the belly pan onto the bottom of the wing, aligning it with the fuselage. Mark the outline of the belly pan onto the fuselage with a fine- tip, felt-tip marker.
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Page 11: Assemble The Fuselage
ASSEMBLE THE FUSELAGE INSTALL THE STAB, ELEVATORS AND RUDDER 3. Measure the distance from the tip of the stab to the tip of each wing. Adjust the position of the stab until both are equal. 4. Once you are satisfied with the fit and positioning of the stab, use a fine, felt-tip marker and trace the outline of the fuselage onto the top and 1. -
Page 12: Install The Landing Gear
9. Insert three hinges into the rudder. Then slide the rudder onto the fin. Apply thin CA onto the hinges the same as was done with the other control surfaces. This completes the installation of the tail surfaces. You will finish the installation of the control horns and pushrods when you do the radio installation. -
Page 13: Install Engine, Fuel Tank & Throttle Servo
of the rudder. Drill a 1/16” [1.6mm] hole into the fuselage through each of the mounting holes in the nylon mounting flange. Secure the flange to the fuselage with three 2 x 7mm [5/16”] sheet metal screws. INSTALL ENGINE, FUEL TANK & THROTTLE SERVO 3. - Page 14 6. Position a 4mm blind nut behind one of the holes you drilled in the firewall. Insert a 4mm [5/32”] machine screw and washer into the hole, threading it into the 4mm blind nut. Tighten the bolt until the blind nut is pulled tight against the backside of the firewall.
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Page 15: Mount The Cowl
MOUNT THE COWL 10. Install fuel tubing from the tank to the engine and muffler, following the instructions with your engine. 1. On the right side of the fuselage, mark the location for the cowl mounting blocks. For the top 11. - Page 16 the firewall to the front of the cowl is 5-3/8” [136mm]. This dimension will properly space the engine when using the spinner included with this kit. If you are using a different spinner or no spinner you may need to position the cowl further forward or back to properly position the cowl.
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Page 17: Install The Radio System
6. Be sure the rudder servo is centered. Enlarge control horn to the aileron with two 2 x 15mm [5/8”] the outermost hole in the servo arm with a Hobbico machine screws and the nylon mounting plate. Servo Horn Drill (or a #48 or 5/64” [2mm] drill bit). - Page 18 Cut the excess wire. 10. Be sure the elevator servo is centered. Enlarge the outermost hole in the servo arm with a Hobbico Servo Horn Drill (or a #48 or 5/64” [2mm] drill bit). Center the elevators and align the wire pushrod with the hole in the end of the servo arm.
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Page 19: Finishing Touches
If, after you 4-CHANNEL have become accustomed to the way the TRANSMITTER Hobbico Sukhoi SU31 flies, you would like to change the throws to suit your taste, that is fine. However, too much control throw could make 4-CHANNEL... -
Page 20: Balance The Model (C.g.)
BALANCE THE MODEL (C.G.) 3. If the tail drops, the model is “tail heavy” and the battery pack and/or receiver must be shifted forward or weight must be added to the nose to More than any other factor, the C.G. (balance point) balance. -
Page 21: Preflight
PREFLIGHT disastrous effect, but vibration may also damage your radio receiver and battery. Vibration can also cause your fuel to foam, which will, in turn, cause IDENTIFY YOUR MODEL your engine to run hot or quit. No matter if you fly at an AMA sanctioned R/C club We use a Top Flite Precision Magnetic Prop site or if you fly somewhere on your own, you Balancer... -
Page 22: Engine Safety Precautions
AMA SAFETY CODE (excerpts) ENGINE SAFETY PRECAUTIONS Read and abide by the following excerpts from the Failure to follow these safety precautions may Academy of Model Aeronautics Safety Code. For the result in severe injury to yourself and others. complete Safety Code refer to Model Aviation magazine, the AMA web site or the Code that came Keep all engine fuel in a safe place, away from high with your AMA license. -
Page 23: Check List
FLYING blocks, wing saddle area, etc. 2. Check the C.G. according to the The Hobbico Sukhoi SU31 is a great-flying model measurements provided in the manual. that flies smoothly and predictably. The Hobbico 3. Be certain the battery and receiver are Sukhoi does not, however, possess the self-recovery securely mounted in the fuse. -
Page 24: Takeoff
(high/low rates). A flight plan greatly reduces the chances of crashing your model just Take it easy with the Hobbico Sukhoi for the first few because of poor planning and impulsive moves. flights, gradually getting acquainted with it as you Remember to think.