Related Manuals for Mountain Models C-180
Summary of Contents for Mountain Models C-180
- Page 1 C-180 Builder’s Manual May 20, 2002 Last revised July 11, 2002 Copyright ! 2002 Douglas Binder, Mountain Models www.mountainmodels.com sales@mountainmodels.com (719) 630-3186...
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Page 2: Required Equipment
Required Equipment Xacto with #11 blades Thin and Thick CA – Cyanoacrylate glue (Super Glue) Sanding block with 200 grit sandpaper Smooth, flat work table Wax paper to protect plans Needle nose pliers Wire cutters 1/8” drill bit Hobby Iron for applying covering – also called a sealing iron Three channel radio Two micro servos: Hitec HS55s or GWS Picos recommended GWS IPS DX A motor with 9x7 propeller... -
Page 4: Fuselage Assembly
C-180 Assembly Tail Wheel Assembly Sandwich the 11/16” diameter by 1/16” thick balsa tailwheel disk between the two 11/16” diameter by 1/32” thick plywood disks. Ensure the holes are lined up, then flow thin CA around the rim of the wheel. - Page 5 ! Attach the fuselage sides by positioning bulkhead F7 between the fuselage sides. Ensure that everything is square and glue with thin CA. Next glue the 1/32” plywood servo mount tray in place. Finally, glue F5, then F4, then F6 in place. ! Position and glue formers F1, F2, and F3.
- Page 6 ! Glue the 1/4” balsa triangle between the fuselage sides at the bottom of the fuselage where they join in the back. This triangle will be used to provide an attachment point for the tailwheel. ! Glue bulkheads F8 and F9 in place and glue the backs of the fuselage sides together. There are two places on the top of the fuselage and one place on the bottom where you will need to glue a 1/8”...
- Page 7 ! Glue the three 1/8” square bottom rear stringers into place starting with the center stringer. The stringers run from F5 to the tail of the fuselage. Extend the outer stringers forward ½” to connect to the two forward stringers you just glued. Sand the tail ends of the stringers to match the shape of the rear fuselage.
- Page 8 ! Set the assembly on top of the fuselage with the notched part flush with the front of the windshield post. This will make the parts angle back. Adjust the dowels so that they are parallel with the top of the fuselage and the front and back wing mount parts are resting on the top of the fuselage. ! Carefully remove the parts from the fuselage while holding them together so as not to lose their alignment to each other.
- Page 9 ! Glue the two notched false ribs to the wing mount assembly then glue the smaller, non-notched false ribs inside the notched false ribs. ! Position the three nose cowl pieces so that the insides line up with the smallest piece first and the largest piece last.
- Page 10 ! Insert the 3/16” x 5/16” x 2 ½” motor mount into F2 and F3. It should extend just past F3. Flow thin CA over the length of the motor mount stick to strengthen it. ! Sheet the two front bottom stringers with the 1/32” x 1 1/4” x 3 7/8” balsa. ! Sheet the top front of the fuselage with the other 1/32”...
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Page 11: Wing Assembly
! Sand the nose cowl to shape. Wing Assembly ! Tape a sheet of wax paper over the plans to protect the plans and to prevent glue from sticking to them. ! Using the plans as a guide, make up two sets of trailing edges from the 1/32” balsa sheet. Set one aside and keep the other over the plans. - Page 12 ! Rock the plywood center spar to the left so that the left side is touching the plans. Either weigh it down or just hold it there. Glue the rest of the 1/8” spar to the center spar. ! Glue another set of split ribs in the next location to the left of center. Glue the rib with the slit in the middle to the outer edge of the center spar.
- Page 13 ! Sand the ends of the wing and glue the wing tips on as well as the wing tip braces. ! Glue the 1/8” square stringer between the two center rear ribs. ! Glue one of the wing hold down plates between the center two ribs, against the trailing edge, and flush with the top of the ribs.
- Page 14 ! Glue the two 1/8” dowels into the wing support. Make sure they stick out the front enough so that they are flush with the front of the wing mount when the wing is in place. ! Insert the 4-40 blind nut into the hole in the second wing hold down plate. Flow some thin CA over the hold down plate to strengthen it.
- Page 15 Once the parts are dry, carefully remove them from the wax paper then sand them. Round all the edges EXCEPT the bottom of the vertical stabilizer where it will be glued to the fuselage. Also, the rear of the stabilizers, the front of the elevator, and the front of the rudder need to have a 40 degree bevel sanded in to them.
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Page 16: Servo Installation
! Glue the landing gear struts to the landing gear wire. Only glue to the fuselage and partway down the leg or the strut will break off in a hard landing when the gear flexes. ! Cut a 1” piece of .025” music wire and glue it to the end of a wing strut so that it extends past the wing by ¼”. -
Page 17: Final Assembly
! Cut two pieces of .025” music wire 1.25” long. Measure in ¼” and make a 90 degree bend. ! Take one of the music wires and insert the short end in the rudder control horn. ! Slide the other end of the wire into the heat shrink and heat the heat shrink. You will adjust the length so that the rudder points straight back.
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