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15.

 

Trim and sand the LE and wingtip and fit 6.4mm balsa LE left and WINGTIP. Sand to 
shape. Thread the aileron servo extension lead through the appropriate holes in the 
ribs. Depending on how you choose to fit the wing servos, you may add the servo 
mount sheeting and reinforcements now, or after the two wing halves are joined. 
Underside of left wing shown below. 

 

 

Summary of Contents for SLINGSBY DART 17

Page 1: ...IGHT 19 OZS WING AREA 330 SQ INS WING AIRFOIL SELIG 3021 WING LOADING 8 3 OZS SQ FT MOTOR PROP 2040 brushless in runner R C car motor driving a 5 1 x 3 1 inch folding prop or up to 28mm outrunner with...

Page 2: ...art with its small tail volume compared to the wing This necessitates a Centre of Gravity further forward than you would normally expect A small amount of lead ballast will likely be necessary to achi...

Page 3: ...t the left and right fuselage sides are different because of the staggered position of the pushrod exits 2 Make up the noseblock assembly in two halves by gluing 3 LHS pieces together shown in red and...

Page 4: ...he fuselage RHS as shown Separately glue the 6 4mm balsa fuselage doublers to the fuselage LHS _____________________________________________________________________ 4 Chamfer the rear of the fuselage...

Page 5: ...rmers all in position as shown along with the 3 2mm ply wing mounting plates and motor mount formers _____________________________________________________________________ 6 Glue fuselage LHS assembly...

Page 6: ...g in place as well as scrap 1 16 x 1 8 balsa wing seating strips which are to allow for the wing dihedral 8 Glue the rear fuselage sides together then glue in the 1 8 OD plastic sleeves for the pushro...

Page 7: ...ess to a 3D printer may wish to form the canopy from foam or balsa hollowed as appropriate _____________________________________________________________________ 10 Add the remaining 6 4mm balsa fusela...

Page 8: ...ING CONSTRUCTION 11 Tape the left wing plan to the building board with a layer of baking paper on top then pin in place the 1 16 sheeting and 1 4 trailing edge and glue cap strips in place as show bel...

Page 9: ...Glue the front and rear dihedral braces to the spar then thread the ribs onto the spar and glue this assembly into position over the sheeting and cap strips PVA works well here Glue the false LE in p...

Page 10: ...10 13 Fit and glue front and rear sections of 1 8 3 2mm balsa root rib R1 as well as TE doubler and scrap square balsa front wing bolt reinforcement...

Page 11: ...11 14 Glue on the LE sheeting using PVA...

Page 12: ...and to shape Thread the aileron servo extension lead through the appropriate holes in the ribs Depending on how you choose to fit the wing servos you may add the servo mount sheeting and reinforcement...

Page 13: ...wing over the plan propping up and joining the left wing to the right wing during construction before the top sheeting is added A hole is made in the bottom RHS centre section sheeting for the ailero...

Page 14: ...r 2 x 4mm wing bolts use location shown on the plans then present wing up to fuselage marking the position on the ply fuselage wing mount plates where the bolts come through Drill and tap holes for th...

Page 15: ...15 18 Make up the fuselage over wing fairing as shown on the plans and temporarily fit in place to shape The model is now structurally complete and should look something like this...

Page 16: ...can be hinged according to preference Fit the aileron servo attachments of choice if not already done earlier The prototype was covered with HobbyKing iron on covering which goes on easily and gives...

Page 17: ...at this point in time but should be considered for motor longevity If using a 3D printed canopy hollow the bottom with a soldering iron to fit the flight battery Rare earth magnets were used to hold...

Page 18: ...the nose is necessary as it probably will be The CG shown gives a neutrally stable model which performs well and is responsive with good glide and penetration It flies faster than a floater like a Rad...

Page 19: ...19...

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