manualshive.com logo in svg

SIG SUKHOI SU-31 ARF, Инструкция по сборке, Страница: 18 / 26

Поделиться
Скачать
SIG SUKHOI SU-31 ARF Скачать руководство пользователя страница 18

18

RADIO INSTALLATION
With all the servos now installed, all that remains is the installation
of the receiver, battery pack and switch.

RX BATTERY PACK: The single heaviest unit of the radio system
is the battery pack. This means that you can, if needed, locate the
batteries wherever they are required in the airplane to help
achieve the correct balance point. Be sure to wrap the battery
pack in foam rubber and use rubber bands or tie-wraps to secure
it to the model structure so that it can't move around in flight.

RECEIVER: Wrap the receiver in foam and use rubber bands or
tie-wraps to secure it in the fuselage. Note that the EXTRA has an
internal receiver antenna exit tube already installed inside the
fuselage. It's the clear plastic tube running along the right side of
the fuselage, extending from the radio tray all the way back
through the fuselage, exiting just ahead of the tailwheel assembly
on the bottom. Slide your antenna into this tube when installing
your receiver.

SWITCH: The switch can be mounted onto the fuselage side or
internally. We prefer an internally mounted switch. We mounted
ours onto the radio tray, using a length of music wire to activate the
switch from the outside. This is simple to do. Just drill a small
diameter hole in the switch lever to fit a piece of .045 music wire.
Drill an exit hole in the side of the fuselage, lined up with the
switch/wire location. Make a 90

O

bend in one end of the wire and

insert the short end into the hole in the switch. Apply silicone 
adhesive (or double-sided foam servo mount tape) to one side of
the switch and insert the wire through the hole in the fuselage,
pressing the switch firmly to the radio tray. Make another 90

O

bend

in the wire outside of the fuselage, giving you a small "handle" to
pull and push when activating the on/off switch. Besides looking
neat, this method provides protection to the switch from dirt, debris
and exhaust.

RADIO CHECK: All servo, switch, and battery connections to the
receiver are now made. We find it easiest to leave the aileron 
Y-harness plugged into the receiver aileron channel receptacle all
the time, with the two connecting ends hanging loose. Plug your
two aileron servo extension chords into the two loose ends of the
Y-harness and mount the wing to the fuselage. Turn the radio 
system on and check the functions of all the controls. Make sure
they are moving in the right direction!  Thousands of R/C airplanes
have crashed over the years because the servos were moving 
the wrong way!  Also make sure all the servos are centered and
working perfectly, without any binding. Correct any such problems
now. With everything checked and working, now is the time to set
the initial control movements.

CONTROL MOVEMENTS
This is an important section of this manual.

After flying your

SUKHOI for awhile, getting used to its characteristics, you will 
likely change the control throws to suit your style of flying. But you
have to start somewhere and this is where you begin. These
movements provide the SUKHOI with very smooth control inputs
without the immediate need for exponential. We suggest starting
out with these movements as your low and high rates. You can
easily play with more  control throw after you become comfortable
with the airplane, especially for 3-D type flying.

SURFACE

SUGGESTED THROWS

AILERONS:

LOWRATE:

7/8" UP

- 7/8" DOWN

HIGH RATE: 1-1/8" UP - 1-1/8" DOWN   

ELEVATORS: LOW RATE: 1" UP

- 1" DOWN 

HIGH RATE: 1-1/2" UP - 1-1/2" DOWN

RUDDER:

2-1/4" RIGHT  -  2-1/4" LEFT 

Remember:

Control surface movements should always be 

measured at the widest point of the control surface.

SAFETY ISSUE: After centering all the servos and setting the
control surface throws, make sure each R/C link has a short length
of fuel tubing in place to prevent it from coming disconnected from
either the control horns or the servo output arms. Also be sure 
you have tightened each of the 4-40 hex nuts tightly against all
threaded R/C links, locking them in place.

DECAL APPLICATION
The decals provided with this kit are typical of the markings that
might be seen on full-scale SUKHOI. They are not intended to be
a complete set of markings to duplicate one particular SUKHOI
SU-31. However, I think you'll agree that when applied to the 
airplane as shown on the box label, they look very realistic and
believable. Feel free to use all or only some of the decals in 
different locations as you see fit.

The decals are made of adhesive-backed mylar, they are NOT
water activated transfers. These decals are not die-cut and need
to be cut from their sheets with a sharp #11 blade or good pair of
scissors. Trim as close to the image as possible.

Putting sticky-back decals on a model can be tricky!  Especially
medium to large size ones like those in this kit. If you don't do it
right you will end up with unsightly air bubbles trapped underneath
the decal. Here's a method that eliminates that problem entirely
and makes the job easy and fun.

You will need a "soapy water" mixture (water mixed with a very
small amount of dish soap, or SIG Pure Magic Model Airplane
Cleaner, or Fantastic

®

, Windex

®

, or 409

®

type cleaners all work

good). You will also need a supple squeegee (the SIG 4" Epoxy
Spreader  #SIGSH678 is perfect for this job), a couple clean soft
cloths (old tee shirts are great), a good straight edge, a ruler, and
a hobby knife with sharp #11 blades. We also suggest that you
have some trim tape handy for making temporary guidelines (1/8"
width or so is perfect) for help in aligning the decals.

First spray the surface of the model where the decal is to be
placed with a soapy water mixture. Then peel the backing sheet 
completely off the decal, being careful not to let the sticky side
double over and adhere to itself. Place the decal onto the wet 
surface of the model.

Do not push down!  The soapy water 

solution will keep the decal from actually sticking to the model until 

Содержание SUKHOI SU-31 ARF

Страница 1: ...elevator servos will be mounted on opposite sides of the fuselage in exact mirror image to each other i e with the pushrods coming off the top of each servo in direct line with the control horns This is done so the geometry of the servos pushrods and horns is exactly symmetrical on both sides providing the exact same response to control inputs for each elevator This is very important in an all out...

Страница 2: ... authority than the small er engines It is simply a matter of how you want to fly the airplane RECOMMENDED ENGINES 2 STROKE GLOW ENGINES 1 50 2 10 cu in 4 STROKE GLOW ENGINES 1 80 2 70 cu in GAS ENGINES 2 4 cu in GLOW ENGINES GAS ENGINES Our preferred engine for the SUKHOI is a 2 4 cu in gas engine Our hands down favorite is the FIRST PLACE ENGINES FPE 2 4 cu in gas engine available from SIG Weigh...

Страница 3: ...er climate you may notice that some wrinkles might develop after removing the covered parts from their plastic bags If that is the case there is no need to be alarmed The covering is not defective This is perfectly normal and has nothing to do with the covering material or how it was applied It has to do with the wood beneath the covering Wood takes on or loses ambient humidity Your SUKHOI ARF was...

Страница 4: ...ool with Selection of Sanding and Grinding Bits Soldering Iron and Solder Large Fuel Tubing WING ASSEMBLY Before starting actual construction trial fit both wing panels onto the Hardwood Wing Joiner and the Aluminum Tube Rear Wing Joiner Check to see that the wing panels fit together in proper alignment and that both root ribs come into firm straight contact with each other If the Hardwood Wing Jo...

Страница 5: ... and to check servo travel Make sure both servo output arms are 90O to the servos and that they are long enough to clear the wing s bottom surface during extremes of travel a Now attach 12 long servo extension chords to both aileron servos Note Be sure to put a piece of tape around the connecting plugs so they can t come apart while hidden in the wing b Feed the servo extension chords into the win...

Страница 6: ...F 1 show the exact locations Drill completely through the foremost wing structure including the hardwood wing joiner that the hinge can be pushed in far enough for the pivot point to line up with the front V point of the aileron leading edge We recommend enlarging the opening of the hinge holes slightly with a hand held 1 4 dia drill bit You only need to twist the drill bit in about an 1 4 or so C...

Страница 7: ...m of the wing where the side flanges make 11 Use slow drying epoxy to install the two hardwood dowels into the front of the wing First trial fit the dowels into the holes without glue to make sure they can be pushed in far enough You want to end up with about 1 2 of dowel remaining exposed in front of the plywood former Take the dowels back out and apply plenty of epoxy glue inside the two holes S...

Страница 8: ...e servo output arms on the output shaft to exactly 90O upright when the servos are neutral c Test the action of the servos making sure the output arms move freely and that they move in the correct directions for left and right aileron action d Turn off the radio system and disconnect the aileron servos from the Y harness 18 Locate one left and one right metal control horn and eight M2 6 x 10mm Met...

Страница 9: ...er engine installations will be similar 1 You need to purchase a suitable engine mount not supplied to fit your particular engine and the appropriate mounting bolts blind nuts not supplied to attach the mount to the firewall A wide variety of after market engine mounts are available Many of them are one piece and sized to fit a particular engine We recommend that you choose aluminum mounts for eng...

Страница 10: ...he front of the firewall carefully aligning it with the horizontal and vertical thrust lines Mark the mount s bolt hole locations on the firewall with a pencil Drill holes completely through the firewall at those locations for the mounting bolts Finally bolt the engine mounts in place being sure to glue the blind nuts into the back of the firewall 3 With the engine mount bolted on the firewall pla...

Страница 11: ...2 CYCLE GASOLINE ENGINES Gasoline engines like the FPE 2 4 pictured here fit best in the SUKHOI when mounted inverted You will need to purchase mounting bolts and blind nuts to fit your particular engine installation 1 The FPE 2 4 gas engine measures 5 from the prop drive washer to the back of the engine mount while the SUKHOI is designed with a firewall to prop washer distance of 6 Consequently y...

Страница 12: ...back edge of the cowling uncovered for the next step NOTE The SUKHOI has lots of room inside the cowling and the engines that we have used fit completely inside except for the muffler pipes and the spark plug of the FPE 2 4 gas engine 3 With the cowl securely taped in place use a 3 64 or 56 dia bit to drill pilot holes in the fuselage centered in each of the four pre drilled holes in the cowl Moun...

Страница 13: ... the bottom of the SUKHOI cowling to allow engine cooling air to properly flow through and exit the cowl Cooling a fully cowled engine is not difficult although many modelers have trouble doing it It s relatively simple if you follow one basic rule Simply stated the total square inches of area you have for air exit must be equal to or slightly more than the square inches of area you have in the fr...

Страница 14: ... fin Let dry 8 Trial fit the fin in place on the fuselage The bottom of the fin should rest on the high point of the stabilizer a View and measure the alignment of the stabilizer to the entire airplane from several different angles Make sure that the fin is absolutely 90O upright on the fuselage and that it is aligned straight with the centerline of the fuselage not turned left or right 3 Next bol...

Страница 15: ...n and eight M2 6 x 10mm Metal Screws Hold one of the control horns in position on the bottom leading edge of the appropriate elevator The horn should be as far forward as possible so that the holes in the horn line up directly over the stab elevator hinge line Also be sure the control horn lines up with the elevator servo output arm Mark the horn s hole locations on the elevator with a fine point ...

Страница 16: ...eutral position Attach the solder link ends of the elevator pushrods to the servo output arms Adjust the threaded R C links to fit into the middle hole of each elevator horn Remove the tape holding the elevators in neutral and test the movement of the elevators with your radio Adjust as required to get both elevators exactly at neutral if you are using the Miracle Y splitter chord you can turn the...

Страница 17: ...f masking tape hold the clear canopy tight against the base and fuselage while the glue dries b With the rudder and tailwheel both in neutral position apply a small amount of tension to the spring and use the pliers to make a 90O bend at the tailwheel steering arm hole Insert the wire into the steering arm and make another 90O bend back toward the center of the spring forming a loop Do the same fo...

Страница 18: ...ed to its characteristics you will likely change the control throws to suit your style of flying But you have to start somewhere and this is where you begin These movements provide the SUKHOI with very smooth control inputs without the immediate need for exponential We suggest starting out with these movements as your low and high rates You can easily play with more control throw after you become ...

Страница 19: ...ur style We therefore suggest that you begin with the 27 CG location and experiment from there you have had time to shift it around into exact position Once you have it in position squeegee the excess soapy water out from under the decal Mop up the water with a dry cloth Squeegee repeatedly to get as much of the water out from under the decal as possible After setting overnight the decal will be s...

Страница 20: ...ing the model this imbalance can cause the model to pull to the heavy side especially in loops and up line maneuvers To make the airplane track true the light wing panel needs weight at the tip to balance it level with the other panel Again this can be done with stick on weights which could later be hidden inside the wingtip If you need to move your balance point fore or aft slightly the first met...

Страница 21: ...nput You will also discover that your SUKHOI has outstanding inverted flight characteristics Our prototypes require only the smallest amount of down elevator to maintain level inverted flight Assuming you re comfortable and getting used to the airplane take it to a safe altitude and throttle back to get a feel for the slow flight and stall characteristics Properly balanced and trimmed your SUKHOI ...

Страница 22: ...22 SUKHOI SU 31 LOG BOOK Engine Prop Flying Weight Wing Loading Balance Point Aileron Travel Elevator Travel Rudder Travel Date of first flight ...

Страница 23: ...23 ...

Страница 24: ...ing the most power at a reasonable cost First Place Engines are your best choice for large gasoline powered model airplane power plants All engines use piston and cylinder assemblies from world renowned manufacturers such as Husqvarna and Sachs Makita insuring long life and easy operation Using state of the art CNC machines First Place produces all other major components from high quality billet a...

Страница 25: ... either model size or full size are not toys Because of the speeds that airplanes must achieve in order to fly they are capable of causing serious bodily harm and property damage if they crash IT IS YOUR RESPONSIBILITY AND YOURS ALONE to assemble this model airplane correctly according to the plans and instructions to ground test the finished model before each flight to make sure it is completely ...

Страница 26: ...The color and markings of this ARF kit do not duplicate one particular full scale Sukhoi SU 31 Rather they are a realistic selection of markings typically seen on many full scale aerobatic airplanes 26 ...

Отзывы:

Нет отзывов