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Join the two sides at the tail at F19. Then cement in F-l between the sides at the front. Note that the sides aren't square in 
the front, forward of F-3. Be particularly careful that everything is aligned properly at this point so you'll have a straight 
fuselage. Beginning at F-2T and F -2B start installing cross pieces and formers. Small rubber bands will be helpful for 
holding the sides against the formers during this operation . Be sure to add 1/16" square strips to F-3 and F-4 as shown 
for the landing gear mounting. Note: cross pieces on the fuselage top behind the wing are installed 1/16" below the top 
surface so that the 1/16" square stringers on the fuselage top will be flush with the surface when they are installed after 
attaching the wings to the fuselage.  

Bend the landing gear flat over the pattern on the plan. Then bend to the shape seen in the front view of the airplane. 
Cement the landing gear into the slots made by the 1/16" square pieces added to F-3 and F-4. Bend axle wire over the 
pattern seen in the front view of the airplane. Attach it to the landing gear with solder or bind with thread and epoxy to the 
landing gear.  

Notches in the formers for the stringers can be easily made by cementing a 1/16" wide strip of sandpaper to a piece of 
1/16" scrap balsa and sanding out the notches. Glue the 1/16" square bottom stringers in place.  

Now cover the front portions of the fuselage with 1/32" sheet. Neatness is essential so take your time in making sure the 
sheets fit well. Patterns are shown on the plan for the sheets between F-l and F-2T and F -2B. The sheet covering 
between F-2B and F-3 is a straight wrap and doesn't require a pattern. Bevel the edge of the planking where it passes 
over F -3 so that the covering will blend onto the bottom stringers neatly.  

Add the tail wheel housing parts and sand to shape. Sand all the rough edges and round the corners at the nose slightly. 
It is a good idea to scallop the formers between the stringers with a rounded piece of sandpaper. This keeps the tissue 
from contacting the formers and makes for a smoother covering job. 

 

Cowling

 

Examine the Cowling detail on the plan. Now carefully cut four 3/32"x1/4" pieces to the length seen in the dotted lines on 
the side view. Cement these parts to C-3 and then add one C-2. Cement on the other C-2 with the grain running 
crosswise to the first C-2, making sure the square hole in the center lines up.  

Add C-l pieces, also crossing the grain for strength. When dry, cover with 1/32" sheet, lapping over both C-2s to allow 
sanding room. Note that the covering extends 3/32" beyond C-3. Sand the front round. The rocker arm covers, made from 
scrap balsa, aren't essential but add a great deal to the appearance.  

Paint the cowl with sanding sealer or a sealer made of a teaspoon of talcum powder in one ounce of clear dope. Apply 
two or three coats of sealer, sanding between coats. Then paint outside of the cowling with white dope. The inside of the 
cowling front is black. Dummy cylinders can be added as indicated on the plan. 

Содержание Mr. Mulligan SIGF23 Classic Series

Страница 1: ...co The remains were recovered by an airline pilot in 1972 Construction of the model is generally conventional but there are a few unusual features to make it easier to build and stronger Please read these instructions carefully so that you do not overlook the unique features and make time consuming errors Figure A shows the uncovered structure Begin by building the fuselage wing or tail first as p...

Страница 2: ... 32 sheet Neatness is essential so take your time in making sure the sheets fit well Patterns are shown on the plan for the sheets between F l and F 2T and F 2B The sheet covering between F 2B and F 3 is a straight wrap and doesn t require a pattern Bevel the edge of the planking where it passes over F 3 so that the covering will blend onto the bottom stringers neatly Add the tail wheel housing pa...

Страница 3: ...ed for this job Put small dabs of glue on the parts of the wing panel that will contact the center section Then put the wing panel back in place over the plan Lift up the tip of the wing panel and slide a 1 4 sq piece of scrap balsa up to the outer W 5 ribs on each panel See wing spar drawing for dihedral details Be sure that the inner end of the wing fits neatly against the center section Don t u...

Страница 4: ...appear and these are easily removed by twisting the warped surface opposite from the warp while holding over the spout of a steaming tea kettle Wear gloves as steam can give nasty burns Add strut attach fitting to underside of the wings Trim struts to proper length and install The struts will prevent further warping of the inboard part of the wing but if the wing is warped before you install the s...

Страница 5: ...e stringers to 1 32 x1 16 Make the wing spar of 1 32 x1 16 Use only the lightest indoor wood Use only one coat of clear dope or two coats thinned 50 with thinner The contest prop should be used but without free wheeling and with 1 32 plywood blades The rubber size should be reduced and adjusted to the height of the ceiling under which you are flying Decals Dip the decals in water for a few seconds...

Страница 6: ... to the nose or tail until it DOES hang level Don t be afraid to add the necessary weight CORRECT BALANCE IS MORE IMPORTANT THAN LIGHT WEIGHT Modeling clay makes handy balancing weight it can be pressed permanently in any corner Wire solder or BB shot can be used by cementing in place If one blade of your propeller always swings to the bottom a tiny smear of clay on the other tip will improve the ...

Страница 7: ... cut the fin loose and re cement it at the desired angle When the glide is smooth and steady you are ready to go on to powered tests Power On Flight ALL ADJUSTMENTS TO THE WOUND UP PART OF THE FLIGHT ARE MADE BY POINTING THE PROPELLER AND NOSEBLOCK IN THE DIRECTION YOU WANT THE PLANE TO GO This kind of adjustment affects only the powered flight and will not upset the glide pattern you have develop...

Страница 8: ... needs If your ship is huskier than average it may not climb even when fully wound In that case add one strand not a complete loop of 1 8 Sig rubber to the motor Tie an eye like a slip knot in each end This will provide the extra horse power needed for higher climb Whenever you add rubber re balance your model as outlined in the pre flight instructions Additional rubber tends to make a plane tail ...

Страница 9: ...ability Good Flying SIG MFG CO INC is totally committed to your success in both assembling and flying the Mr Mulligan Should you encounter any problem building this kit or discover any missing or damaged parts please feel free to contact us by mail or telephone SIG MFG CO INC 401 7 South Front Street Montezuma IA 50171 0520 SIG MODELER S ORDERLINE to order parts 1 800 247 5008 SIG MODELER S HOTLIN...

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