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GeTTING ReADY TO FLY YOuR J-3 CuB 370 RTF

STeP 1:  CHARGING THe FLIGHT BATTeRY

  To unplug the connectors, squeeze the tab on the battery connector and pull the two connectors apart.

  After charging the flight battery, install it in the fuselage, using the same techniques as when you installed it previously.

WARNING

  Always remove the flight battery from the fuselage for the charging process.

❑ 

Plug the flight battery connector into the battery charger connector.  When 

plugged in properly the connectors should "click" together.  

   

As a safety feature, the connectors can only be plugged 

in one way. 

❑ 

Plug the charger into an AC wall outlet.

❑ 

Charge the flight battery for 2-3 hours.  

Be careful not to overcharge 

the flight battery.

PRO TIP

If the flight battery is hot to the 

touch, it is fully charged.  Unplug 

it from the charger immediately.

IMPORTANT

  Before charging the flight battery, the flight battery must be fully discharged.  Discharge the flight battery by running 

the motor until it stops.  This will ensure that you don't overcharge the flight battery.

The flight battery can be charged using either the AC charger or the DC fast-charger.  Note that the DC fast-charger features 

a socket-style input connector.  This connector can be plugged into your vehicle's cigarette lighter or 12V power socket.  
Note that depending on your vehicle, you may need to turn the key into the accessory position to power the charger.

Flight Battery Charging Tips:

  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 battery is approximately 2-3 hours.

  Charge-time using the DC fast-charger for a fully discharged battery is approximately 20-30 minutes.

  If the flight battery becomes hot to the touch, unplug it from the charger immediately.

  Always allow the battery to completely cool before recharging it.

  Never leave the battery unattended during the charging process.

  Now, test the operation of the motor.  Double-check that the throttle control stick is pulled completely back.  While keeping clear 

of the propeller, press the red motor safety arming switch on the side of the fuselage once.

WARNING

  During the motor test, keep everything clear of the propeller, especially fingers and loose clothing.

❑ 

While holding the airplane upright in the air 

with the propeller point-

ing away from you

, push the throttle control stick completely forward.  

The propeller will spin at a high rate of speed.

  Continue the Ground Operations Testing until the flight battery no longer 

has enough power to operate the motor. This should give you enough time 
to become familiar with how the airplane's controls operate.  Once the 

flight battery no longer has enough power to operate the motor, remove 
the battery door, unplug and remove the flight battery, and turn off the transmitter.

uSING THe AC WALL CHARGeR

Continued On Next Page

 

 

If  the  motor 

turns  on  when  the  throttle 

control stick is pulled com

-

pletely back, flip the CH 3 

servo  reversing  switch  on 
the transmitter, as shown.

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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