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SIG RASCAL ARF, Assembly Manual, Page: 15 / 18

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15

PROBLEM

LACK OF POWER

AIRPLANE "DIVES" IN
POWER-OFF GLIDE

AIRPLANE STALLS IN
POWER-OFF GLIDE

NOT ENOUGH CONTROL
AUTHORITY

VIBRATION WHILE
MOTOR IS RUNNING

POSSIBLE CAUSE

1) BATTERY PACK NOT FULLY 

CHARGED

2) BAD CELL IN BATTERY PACK
3) GEARS TOO TIGHT
4) MOTOR BRUSHES WEARING 

OUT

1) CENTER OF GRAVITY (C.G.) 

TOO FAR FORWARD

1) CENTER OF GRAVITY (C.G.) 

TOO FAR TO THE REAR

1) RUDDER AND/OR ELEVATORS

NOT MOVING ENOUGH

1) PROPELLER OUT OF BALANCE
2) SOMETHING MAY BE LOOSE
3) PROPELLER SHAFT MAY BE 

BENT

REMEDIES

1) DISCHARGE & RECHARGE 

BATTERY PACK

2) REPLACE CELL OR PACK
3) RE-SET GEAR LASH
4) REPLACE MOTOR

1) REPOSITION BATTERY PACK A 

LITTLE FURTHER BACK

2) RE-CHECK C.G. LOCATION AND 

ADD STICK-ON WEIGHTS IF 
NEEDED

1) REPOSITION BATTERY PACK A 

LITTLE FURTHER FORWARD

2) RE-CHECK C.G. LOCATION, ADD 

STICK-ON WEIGHTS IF NEEDED

1) INCREASE SERVO MOVEMENT 

THROUGH TRANSMITTER

2) PUT LARGER OUTPUT ARMS ON 

SERVOS & USE OUTER HOLE 
LOCATIONS

3) MOVE PUSHROD LINKAGE

CONNECTIONS IN THE 
CONTROL HORNS IN TO THE 
NEXT CLOSEST HOLE

1) BALANCE PROPELLER
2) REPLACE PROPELLER
3) CHECK AIRFRAME
4) REPLACE SHAFT AND/OR 

GEARBOX

5) CHECK MOTOR SHAFT

T R O U B L E   S H O O T I N G   C H A R T

Summary of Contents for RASCAL ARF

Page 1: ...e and or unnecessarily heavy airborne radio equipment This is a simple reality that has to be addressed Fortunately after market receivers and servos appropriate for this model are not only readily available and of very good quality they re now very reasonably priced In flight testing our Rascal ARF models we ve used a wide variety of airborne radio equipment For servos we have used and can highly...

Page 2: ...connections We suggest that you have a good soldering iron and good quality solder and flux For the pushrod connections we use and like the Stay Brite Silver Solder products For electrical connections use solder specifically for that purpose WINGS 1 Start by using a hobby knife with a 11 blade to clear out the rear wing bolt holes on the top and bottom of the wing center section Test fit the wing ...

Page 3: ...tion the servos in place and pre drill small guide holes for the servo screws Mount the servos into the servo tray using the hardware provided with your servos 4 From the kit contents locate the two paperclips provided in the hardware package These will be used to make the rudder and elevator linkage connections Straighten the paperclips and use pliers to bend the two required control linkages for...

Page 4: ... over the wire landing gear legs and onto the bottom of the fuselage Trim as needed for a good fit Remove the spreader and apply 5 minute epoxy to its bottom outside edges where it contacts the fuselage bottom Also apply a little glue along the front edge of the spreader where it butts against the bottom forward fuselage sheeting Press the spreader in place wipe off any excess glue with alcohol Ta...

Page 5: ...ip up or down on the wire until the boltholes are approximately 3 8 above the axle hole Use a sharp pencil to mark the clip s two bolthole centers onto the wheel pant After making these marks remove the wheel pants from their axles Use a pin vise and a 046 dia drill bit 56 numbered drill to drill guide holes through the wheel pants and the inside plywood pads at the marks just made 4 Slip a wheel ...

Page 6: ...ushing the elevators up to the scrap wood or cardboard hinge inserts Remove one of the hinge insert scraps flex the elevators downward exposing the center of the hinge Apply 3 or 4 drops of thin CA glue to the hinge at the centerline Turn the stabilizer over and repeat this process on the same hinge Repeat the same procedure for the remaining three elevator hinges Any excess glue can be easily rem...

Page 7: ... and the two wheel pant halves a Lay the wire in place at the bottom front of the rudder The correct position for the wire is to place it where the rearward bend meets the bottom of the rudder Use a marker pen to mark the position of the top of the wire where it enters the rudder Use a long pin or thin drill to make the necessary 1 2 hole into the rudders leading edge exactly in the center at the ...

Page 8: ...et measuring 2 1 2 x 4 1 4 This is the material used to make the optional landing gear fairings Use the patterns provided in this manual First remove the wheel pants Cut out two landing gear fairings from the card stock and bend them in two sharply at their leading edges Mix a small amount of 5 minute epoxy and spread it on the inside surface of the fairing Place the fairing onto the wire landing ...

Page 9: ... and insert it into the remaining hole in the nylon connector body The battery pack can now be charged 4 With the battery pack charged the motor and ESC can be tested using your radio system This test is to make sure the system works and is properly wired to produce the correct rotation of the propeller NOTE This ESC device will not work with transmitters operating on PCM mode NEVER PERFORM SUCH A...

Page 10: ...y play Cut this ring off of the molded tree and insert it into the back face of the spinner backplate Slip the backplate in place onto the propeller shaft all the way back to the rear 6 With the spinner backplate in position on the gearbox the motor gearbox and ESC harness can now be mounted into the fuselage Use a screwdriver to loosen the four screws holding the motor mount and remove the bottom...

Page 11: ... antenna with a pin at the rear of the fuselage or the top of the fin 10 The battery pack is held securely in place during flight with the 3 1 2 length of Velcro tape provided in the kit Pull the two Velcro strips apart remove the protective backing from the tape side and stick one strip to the bottom of your battery pack and the other strip to the floor of the battery hatch 11 With the above step...

Page 12: ...H678 is perfect for this job Mop up any excess cleaner with a dry cloth and allow the decals to set overnight They will be solidly adhered to the model without any air bubbles BALANCE IMPORTANT The flight pack battery must be installed in the fuselage and the propeller and spinner mounted in place to the gearbox when determining the correct Center of Gravity CG location The correct CG location for...

Page 13: ...At altitude throttle back to a comfortable cruising speed and get familiar with the model at slower speeds Take care of any trim requirements that might be needed and settle back to enjoy the flight Now is the time to find out how the airplane reacts to control inputs Properly set up with the CG in the right location the airplane should be very comfortable to fly at the suggested initial control m...

Page 14: ...14 RASCAL AR F NOTES ...

Page 15: ...OPELLER SHAFT MAY BE BENT REMEDIES 1 DISCHARGE RECHARGE BATTERY PACK 2 REPLACE CELL OR PACK 3 RE SET GEAR LASH 4 REPLACE MOTOR 1 REPOSITION BATTERY PACK A LITTLE FURTHER BACK 2 RE CHECK C G LOCATION AND ADD STICK ON WEIGHTS IF NEEDED 1 REPOSITION BATTERY PACK A LITTLE FURTHER FORWARD 2 RE CHECK C G LOCATION ADD STICK ON WEIGHTS IF NEEDED 1 INCREASE SERVO MOVEMENT THROUGH TRANSMITTER 2 PUT LARGER O...

Page 16: ...r Pushrods 2 each Paper Clips Cable Linkages 4 each Brass Tubing 1 16 x 1 4 Pushrod Linkage Connectors Molded Parts 2 each Nylon Landing Gear Clips 3 32 Wheel Pant Attachment 1 each Nylon Wing Bolt 4 40 x 1 Rear Wing Hold Down 1 each Spinner Kit 1 1 2 Dia White With Adapter Rings 1 sheet Clear Plastic Molded Side Windows Miscellaneous 1 each Plywood Switch Mounting Plate 6 each CA Hinges 2 For Rud...

Page 17: ...f any form 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 c...

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