Phase 3 J-3 CUB 370 RTF Operating Instructions Manual Download Page 18

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  Landing should always be done into the wind with the wing level.

  To prepare for landing from normal flight, make a shallow turn so that the airplane is flying directly into the wind.  Make small turns 

to level the wing, then pull back completely on the throttle control stick to turn off the motor.  When you do this, the airplane will gradu

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ally descend straight ahead.

  Allow the airplane to gradually descend.  If the airplane seems to be descending too fast, gently pull back on the right-hand 

control stick to make the airplane pitch up to level flight.  This will bleed off speed and slow the descent.  Once the airplane has slowed 
down, release the control stick and allow the airplane to continue its descent.  Once the airplane is about 15 feet (5metres) off the 
ground, make sure that the wing is level and continue a shallow descent.  Just before touch-down, gently pull back on the right-hand 
control stick to level the airplane with the ground for landing. 

 

 

If you need to turn the airplane while descending for landing, make gentle, shallow turns.  Making steep turns may 

cause the airplane to stall and crash.  Also, you should just try to land anywhere on your flying field, as long as it's into the wind.  
Don't try to land in a particular spot.  You can do that once you've mastered flying the airplane.

  After landing, unplug and remove the flight battery from the fuselage, then turn off the transmitter.  Allow the flight battery to cool 

completely, then recharge it for your next flight. 

LANDING THe J-3 CuB 370 RTF

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When the airplane climbs you will notice that it will begin to lose speed.  You'll also notice that the airplane will gain 

speed when the airplane descends.  If you climb too steeply, the airplane may slow down so much that it stops flying and stalls.  
Conversely, if you descend too steeply, the airplane may fly so fast that you begin to lose control.  For these reasons, we suggest 

using small, gentle control inputs to prevent this from happening.

  To turn the airplane, you need to move the right-hand control stick in the direction you want the airplane to turn, either right or left.  

To make smooth, gentle turns, gently move the control stick in the direction you want the airplane to turn and 

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 the control stick 

in that position for a second or two and the airplane will begin to turn.  After the airplane has turned in the direction you want, move 

the control stick gently in the opposite direction to level the wing, then allow the control stick to return to center.

 

 

The longer you hold the control stick over, the tighter the radius the airplane will turn in.  We recommend gentle turns 

until you are proficient with the flight characteristics of the airplane.

WARNING

  Do not hold the right-hand control stick either right or left for more than a few seconds.  Hold it over only long enough 

for the airplane to begin to bank and turn.  Holding the control stick over longer can cause the airplane to roll too steeply and the 

nose to drop rapidly, possibly causing a crash to occur.

  When going into a turn, the airplane will have a natural tendency to lose some altitude.  Unless you want to descend, you should 

gently pull back on the right-hand control stick to keep the airplane level during the turn.  The steeper the turn the more altitude the 
airplane will lose and the more you will need to pull back on the control stick.

  You should continue to fly, making circles and S-turns for about 3 minutes or so.  This will give you plenty of time for landing.  Re

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member for now to keep the motor at full power and use gentle control inputs to keep the airplane level throughout the entire flight.  
Also remember to keep in mind that when you make turns the airplane will want to lose altitude, so you'll need to pull back gently on 
the control stick to keep the airplane level.

 

 

If there is any wind when you are flying, you will notice that when the airplane turns into the wind it will slow down and 

climb slightly.  When this happens, gently move the control stick forward to pitch the airplane down if you don't want the airplane to 

climb.  When the airplane turns down-wind (with the wind), the airplane will speed up and descend slightly.  You should gently pull 

back on the control stick to keep the airplane from descending too much while flying down-wind.

  After some practice, you will learn how to minimize the amount of up and down, and right and left movements of the airplane and 

be able to control the airplane in a smooth and graceful manner.

When flying toward you, you will notice that it seems that the right and left controls are reversed.  An easy way to learn to 

overcome this confusion is to move the right/left control stick toward the "lower" side of the wing to level the airplane.  
You can also try to "envision yourself in the cockpit."  This helps a lot when trying to coordinate right and left turns when 

the airplane is flying toward you.

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Summary of Contents for J-3 CUB 370 RTF

Page 1: ...gr Wing Loading 13 Ounces Per Square Foot 39 5gr dm2 Molded from Durable Plastic and Foam Preinstalled 4Ch FM 27MHz USA Radio Control System 35MHz EU Three Channel Control Elevator Rudder and Throttle...

Page 2: ...the flight battery may occur To prevent the flight battery from overheating during the charging process allow the flight battery to completely cool before recharging it Always completely discharge th...

Page 3: ...Assembly Fuselage Assembly Not Shown SmalL wood ScrewS 12 Landing Gear Wing Struts and Clips 4 Propeller and Spinner Phase 3 is proud to present the J 3 Cub This trainer aircraft is modeled after air...

Page 4: ...rsing Switches These switches allow you to electronically change the direction the servos move Throttle Control Stick This stick can move both right and left and up and down at the same time and is us...

Page 5: ...e airplane forward Vertical Tail Provides stability for the airplane during turns Wing The wing has a special airfoil shape and provides the main source of lift for the airplane The flight battery inc...

Page 6: ...CUB 370 RTF Step 1 Installing the Transmitter Batteries Continued On Next Page Step 2 Installing the horizontal tail Carefully slide the horizontal tail into the slot in the back of the fuselage When...

Page 7: ...nt portion of the vertical tail down into the mounting slot in the fuselage Push the vertical tail down in position When aligned properly the tab in the base of the vertical tail should fit into the n...

Page 8: ...the radio system later PRO TIP Carefully snap the plastic clevis on the pushrod wire into the outermost hole in the rudder control horn We suggest installing the clevis into the outermost hole in the...

Page 9: ...it firmly onto the front of the propeller The inside of the rubber safety spinner is molded to fit securely over the hex nut and threaded propeller shaft Step 7 Installing the wing Set the wing onto t...

Page 10: ...are four plastic wing struts included There are two longer ones for the front and two shorter ones for the rear When installing them in the next few procedures make sure to install the two front wing...

Page 11: ...ll need to make sure that the transmitter is turned on Turn on the transmitter The needle in the voltage meter should move into the silver safe area If it doesn t replace the batteries with a fresh se...

Page 12: ...he flight battery into the connector that is inside the fuselage When plugged in properly the connectors should click together IMPORTANT As a safety feature the connectors can only be plugged in one w...

Page 13: ...to the left The rudder should move left If the rudder does not move in the correct direction flip the CH 1 servo reversing switch on the front of the transmitter as shown PRO TIP Looking from the back...

Page 14: ...ips Always run the motor until it stops before recharging the flight battery This will ensure that the battery is properly discharged Charge time using the AC wall charger for a fully discharged batte...

Page 15: ...you become a proficient flyer you should always plan on flying your airplane when there s no wind We strongly sug gest waiting for a calm day If it s windy and you attempt to fly it will only make lea...

Page 16: ...will help ensure your success Some Things to Remember With the flight battery fully charged you can expect anywhere from 4 6 minutes of flight time so plan your landing accordingly Make sure that your...

Page 17: ...e ground making sure that the airplane is pointing directly into the wind Slowly push the throttle control stick forward until the motor is running at full power The airplane will quickly begin to acc...

Page 18: ...direction you want move the control stick gently in the opposite direction to level the wing then allow the control stick to return to center The longer you hold the control stick over the tighter th...

Page 19: ...ottle Hold the parts together and in alignment until the glue fully cures Apply a strip of clear Scotch tape over the seams to strengthen the joint even more It is very important that you use no solve...

Page 20: ...ally the transmitter charger and flight battery Do not allow any of the electrical components to get wet or damage may occur Periodically double check that the propeller nut is tight Check the propell...

Page 21: ...rystal Set Ch 3 PH109024 27MHz FM Crystal Set Ch 4 PH109025 27MHz FM Crystal Set Ch 5 PH109026 27MHz FM Crystal Set Ch 6 PH109028 Motor Controller Sorry No Photo Available PH109030 Receiver w o Crysta...

Page 22: ...ter trim tab as control input described on page 19 5 Airplane constantly climbs or A You are flying in too much wind A Fly when there is no wind descends without any B The airplane is out of trim adju...

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