Manzano Laser Works deHavilland DHC-1 Chipmunk Assembly Manual Download Page 1 | Manualshive

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deHavilland DHC-1 Chipmunk

Assembly Guide

Manzano Laser Works

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Summary of Contents for deHavilland DHC-1 Chipmunk

Page 1: ...deHavilland DHC 1 Chipmunk Assembly Guide Manzano Laser Works ...

Page 2: ...s follows Sheet 1 Fuselage Sheet 2 Wing Stab Fin Rudder Sheet 3 Sheeting and part layouts not included on the other plan sheets Materials used in this model include balsa liteply plywood brass tubing and piano wire A formed plastic canopy is also used Most of the wood and the formed canopy is supplied with the kit The builder supplies 3 16 and 1 8 square balsa strip stock piano wire brass tubing a...

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Page 11: ...TAIL SURFACES ASSEMBLY ...

Page 12: ...de of the spar can now be sanded to shape Refer to the plan cross section drawings for the shape of the spar back face The elevators are assembled using the same procedure as the stab Dry fit the r bs to the spars and then place on the plan The plywood side of the spars face the ribs Add the trailing edge pieces so the rear of each rib engages the notches When everything is lined up glue all of th...

Page 13: ... the two halves and the key Sand a bevel on the forward face of the rear half of R7 to match the plan profile Glue the halves together using the balsa key to align and strengthen the joint Sand the forward half of R7 to match the joint angle Install R7 Dry fit the rudder tip parts R1 and R2 When satisfied with the fit glue the joint Place the rudder tip on the assembly R2 should be centered on R3 ...

Page 14: ...WING ASSEMBLY ...

Page 15: ...e sure all of the ribs are touching the building surface and the 1 8 square strip A few straight pins can help make sure everything stays in the proper place Apply thin CA to all of the joints Make up four paper tubes that are 1 2 in diameter Allow for a bit of overlap when rolling the tubes Two of the tubes need to be 20 long and the other two 7 long Slide one of the long tubes into the forward s...

Page 16: ...nd for this step Place the wing panel on the building board over the plan when gluing the top leading edge sheeting in place This will help lock in the tip washout Remove the wing panel from the building surface Cut and fit the bottom leading edge sheeting Glue it in place Check to be sure the tip washout has not been altered before the glue dries Glue the wing bolt reinforcement 1 4 balsa laminat...

Page 17: ...ofile shown by the plan wing cross sections Build the second wing panel following steps 1 through 18 of this assembly guide section The two wing panels are joined using two 1 8 plywood doublers Use epoxy to join the wing panels Glue the center wing dowel to one wing panel before joining both panels With one wing panel laying flat on the building surface the opposite tip should be 6 above the surfa...

Page 18: ... trays using four wood screws in the corners of the trays 28 29 Bend the landing gear legs using 1 8 diamater piano wire Place the landing gear legs into the slots of the landing gear mounting blocks Place a plywood retaining lug in the pockets of the mount block Mark the location of the retaining screws After all of the screw locations have been marked dirll pilot holes for the screws Run screws ...

Page 19: ...FUSELAGE ASSEMBLY ...

Page 20: ...t is flush with the top of the notches in the wing saddle area next to side formers 4 and 7 The parts should be on the wing saddle side of each side former 4S 7S Assemble the two sets of wing saddle parts WS1 through WS3 The wing saddles are then glued to the fuselage internal box and the bottom of the side formers The tabs on the wing saddles fit in the notches of the liteply box sides The bottom...

Page 21: ...nd part KE The tail wheel leg should rotate freely without any interference from the structure Bend the rudder control horn using 3 32 piano wire Slide a 1 1 8 length of 1 8 brass tubing on the wire after bending the push rod link end and before bending the rudder tiller arm Slide the 1 8 plywood rudder horn support pieces on to the assembly as shown DO NOT APPLY ANY GLUE These parts can slide fre...

Page 22: ... will be made later Install 3 16 square balsa stringers on the rear fuselage section using the notches in the formers The top stringer will need to be tapered at the rear The taper should start from about 5 1 2 from the rear end of the top stringers The push rod supports are made from two pieces of 1 8 balsa To accommodate the variations in individual builds the supports are trimmed to fit each lo...

Page 23: ... are four pairs of 1 4 x 1 8 magnets that are used to retain the cowl Install the magnets at this time Glue a magnet in each of the holes in the lower cowl half keel parts Place a magnet on the installed units Mark the outer face of the second set of magnets One at a time remove the second magnet and glue it in the corresponding hole of the upper cowl half The marked face will go toward the inside...

Page 24: ...FINAL STRUCTURAL ASSEMBLY ...

Page 25: ...ool used in the previous step Next the stab is installed Before performing that operation connect the elevator control horn to the elevator pushrod clevis Slip one of the balsa stab center section sheeting pieces over the rudder horn Place the stab over the rudder horn on top of the center section sheet Glue the bottom center section sheeting to the stab The tabs on stab ribs S1 align the sheeting...

Page 26: ...ller laminations together Sand the assembly to match the elevator root rib profile Temporarily fit the elevators to the elevator horn They can be retained with masking tape Glue the elevator filler piece to the fuselage with it centered between the elevators Remove the elevator halves 10 The landing gear leg covers are made from three laminations of 1 8 balsa Glue the center pieces to one side of ...

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