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Mountain Models Magpie 

14

You should center your servos before you hook them up to the pushrods. To do 
this: Connect your servo to your receiver, connect your ESC to your receiver, turn 

on your transmitter, and then connect your batteries to your ESC. Your servos will 

move to a neutral position, assuming all of your radio trims are set to zero (0). 

1.

 

Press the servos into the slots you made in the fuselage build.  You will need servo 

extension cables as your servo cables will not be long enough to reach the receiver.  
You can either tape the cables to the side of the fuselage or cut a slot into the 

fuselage as shallow as possible and press the wires into the slot.  Close the slot up 

with tape. 

2.

 

The pushrods are made from two pieces of 1/32" x 5.5” music wire with a Z bend on 
one side. One Z bend goes in the servo horn and the other Z bend goes in the rudder 

or elevator control horn.  The two wires are joined with a piece of heat shrink tubing.  

Be very careful shrinking the tubing as the foam melts easily.  Once the pushrods 
are adjusted to the correct length, where the servo horn is centered and the tail 

surface is straight back, carefully place a drop of thin CA on the end of the heat 

shrink so that it will wick into the tubing.  This creates a very strong joint. 

 

 

3.

 

If you have the SF wing,  skip ahead to the next section. 

4.

 

cut a 45 degree bevel in the ailerons, ensuring that you make a right and a left 

aileron (the bevel is on the opposite side on one).  Using packing tape as a hinge,  

attach the ailerons to the wings so that the outer edge of the ailerons are flush with 

the outer edge of the wings.   

5.

 

Glue the control horn reinforcement plates and control horns into the top of the 

ailerons. 

6.

 

Cut out a hole for the aileron servo as you did with the other two servos.  The hole 

can go through the wing to get the servo wire out the bottom of the wing. 

7.

 

Make up two more pushrods as you did above but cut the wire to 4.5”.  Attach as 

shown. 

 

8.

 

The ailerons should be aligned so that they are halfway between the top curve of the 

wing and the bottom. 

Содержание Magpie

Страница 1: ...r the beginner pilot who wants a robust trainer The SP or Sport model also has ailerons for the pilot who wants to step up to the next level of flying The wings are interchangeable Built properly the Magpie should survive the majority of crashes you are likely to experience learning to fly Sincerely Mountain Models Doug Binder doug mountainmodels com P O Box 9557 Colorado Springs CO 80932 www moun...

Страница 2: ...selage 3M77 spray adhesive 3 channel radio 4 channel for SP wing GWS EPS350C C motor 2 micro servos 3 for the SP we recommend either the Hitec HS55s GWS Pico Naro Electronic Speed Control ESC capable of handling at least 10 amps KAN650 battery pack or 1000mAH or higher 2S LiPoly battery Parts List Quantity Description of Part Wood 1 1 32 Laser cut plywood sheet 4 1 16 Laser cut plywood sheet Foam ...

Страница 3: ...that they are oriented correctly If you want to remove the charred edges caused by the laser cutting process dampen a cloth with bleach and gently rub the affected areas Removing the char will not increase the strength but will make it look better Assembly Instructions Step 1 Assemble the Wing The first thing you are going to assemble is the wing of your airplane This involves assembling the wing ...

Страница 4: ... shape the wingtips I like to cut a radius into the front of the wingtip to give the wing a more sweeping look This is also a good idea if you expect to be crashing as it makes the wingtip stronger Cut the radius with an xacto then sand the cut even and rounded 4 Glue the 75 x2 x1 64th plywood reinforcement plates to the center of the wing at the leading edge and the trailing edge These are to pro...

Страница 5: ...purchased at many office supply stores 1 Lightly sand the entire wing Remove all the dust or the tape will not adhere The adhesive spray is known to contain acetone which will eat foam In order to minimize the problems you must have a clean nozzle emitting a fine mist which is kept a good distance away from the wing and moved quickly Apply a very light coating on the surfaces allow some dry time a...

Страница 6: ...e first strip should wrap around the trailing edge by 1 2 Continue laying down strips of tape to cover the bottom of your wings overlapping each piece by 1 4 or more The tape should also extend past the wingtip where you will wrap the tape around the tip before trimming Keeping your scissors or hobby knife clean is very important to the covering ...

Страница 7: ...ve 3 Once the bottom is done shrink the top in the same fashion Step 2 Assemble the Fuselage You will assemble the fuselage by first gluing the two fuselage halves together adding strapping plastic for reinforcement sanding to shape adding servo mounting plates then taping the fuselage Follow along carefully as there are a few critical steps along the way 1 Glue the two fuselage halves together Yo...

Страница 8: ...n I like to completely round the top and bottom but just a little is fine You ll want to sand outside as the foam dust will make quite a mess Remove as much of the foam dust as possible before continuing DO NOT SAND THE WING SADDLE The area where the wing meets the fuselage 5 Mount the rear servo reinforcement plates so that the elevator servo plates are 1 4 in front of the horizontal stabilizer a...

Страница 9: ...e around compound curves you can make small slits in the tape along the curve and perpendicular to the curve Make sure to wrap completely around the rear of the fuselage When you are done taping you will need to go back and cut the tape away from the horizontal stabilizer slot the motor mount slot and the left side of the receiver hole the opening under the wing saddle 8 Put a fresh blade in your ...

Страница 10: ... Be sure that the glue is completely dry before sliding the mount into the fuselage as the uncured CA will dissolve the foam 2 Ensure that a GWS type motor gearbox will slide over the mount stick You may need to sand the motor stick a bit to get the motor on 3 Slide the motor mount into the fuselage and tape it into place One piece of wing tape per side will hold the mount in nicely In the photo t...

Страница 11: ...ere the vertical stabilizer will be glued Vertical Stabilizer in line with left edge 2 Cut a 45 degree bevel along the trailing edge of the horizontal stabilizer This is so that the elevator can deflect down without interfering with the horizontal stabilizer I like to use an xacto knife to cut the bevel I lay a straight edge along the trailing edge and angle the knife inward 3 Join the two elevato...

Страница 12: ...the fuselage is on the left 5 There are two control horn reinforcement plates Slide a control horn into the plate and epoxy the plate and horn to the top of the elevator into the provided slot The horn will be in the left elevator as shown in the above photo 6 Follow the same procedure for the rudder horn The rudder horn will be on the left side of the rudder 7 Tape the elevator to the horizontal ...

Страница 13: ...e fuselage so the hinge is facing up and glue with foam safe CA white glue or epoxy Ensure that the stabilizer is square to the fuselage 10 Hinge the rudder to the rear of the fuselage the same way you hinged the elevator You will need one piece of tape below the rudder control horn and another above the elevator to the top of the rudder The hinge will be on the left side of the fuselage Step 4 In...

Страница 14: ...of heat shrink tubing Be very careful shrinking the tubing as the foam melts easily Once the pushrods are adjusted to the correct length where the servo horn is centered and the tail surface is straight back carefully place a drop of thin CA on the end of the heat shrink so that it will wick into the tubing This creates a very strong joint 3 If you have the SF wing skip ahead to the next section 4...

Страница 15: ...en install the propeller If you are using a GWS propeller make sure the print on the blades is facing forward Step 7 Install the Receiver and Speed Controller We are not going to cover the receiver and speed controller ESC specific information please refer to your manufacturer s instructions for more information if necessary Attaching the Receiver The receiver is positioned in the cutout in the fu...

Страница 16: ...3 in length and then attach it to the side of the fuselage 2 Attach the soft side of the Velcro strip to the side of your battery pack Attaching the Battery NiMH 1 First you need to find out where the battery needs to be to balance the plane Set the battery on the plane and position it such that the plane balances properly This must be done with the plane completely ready to fly with everything in...

Страница 17: ...ired when I used 1200mAH Lipoly cells I cut a slip in the wingtip and pressed the coins in the slit then taped the slit shut Addendum Adding landing gear While the Magpie does not need gear the kit comes with hardware to add it if you desire Start by bending the 3 32 x 16 music wire as shown The point in the image is the center of the wire Glue the two sides to the landing gear base with CA or epo...

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