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Related Manuals for Bengtson Company HALBERSTADT DIII
Summary of Contents for Bengtson Company HALBERSTADT DIII
- Page 1 Halberstadt DIII 36’ HALBERSTADT DIII 36” R/C Scale Model Instructions CONTACT INFORMATION Designed by M.K.Bengtson Manufactured and Distributed by: Bengtson Company e‐mail: sales@aerodromerc.com Web Site: www.aerodromerc.com Copyright© 2005‐11 M.K. Bengtson All Rights Reserved Rev 07/11 ...
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Page 2: Specifications
Halberstadt DIII 36’ Page 1 themselves and were certainly respected by their Allied adversaries. HALBERSTADT DIII 36” THE MODEL Thank you for purchasing the Halberstadt DII model A semi scale adaptation of the Halberstadt DIII, this plans for electric flight. model is designed to be easy to build and exciting to fly. POWER SET UP The model can be set up to be powered by the GWS 300C motor and the D gearbox and a 10x4.7 APC prop. Battery power pack can be 7 600maH Nicads or an equivalent weight Nimh R/C GEAR A four function mini receiver and four micro servos are all that are required. SPECIFICATIONS More than 160 laser cut parts Finished Model BY Dave Ottney Scale: ~1/9 The first single‐seat scout product of the Halberstadter Channels: R/E/A/T Flugzeug‐Werke was the 100 h.p. Mercedes‐engined D.I Wingspan: 36ʺ of late 1915. This was an orthodox slab‐sided, two‐bay Wing Area: 401 sq in aircraft typical of its period, with a flush‐type radiator ... -
Page 3: Fuselage Construction
Halberstadt DIII 36’ Page 2 The Upper wing Strengthen the triangular sections of the formers with thin CA. Upper Wing Construction Detail FUSELAGE CONSTRUCTION Fuselage Construction Detail The fuselage is built as two separate box structures, the Optional 1/32” balsa sheeting shown over stringers. front sheet area and the rear built up section, which are then joined over the plan. This system not only keeps each stage simple, but it also helps to ensure a straight fuselage. Building of the Right Side of the Fuselage Begin by building two rear fuselage frames over the plan and allow to dry. Select hard balsa or basswood for the longerons. Build one frame and let it dry, then turn this over and build the other frame on top of it. Now they should both be identical. Use some thin polyethylene sheet between the assemblies to prevent them sticking either to the plan or to each other. Fuselage Construction Detail Join the two frames over the plan with cross braces and the tailskid mount. Check, check and check again that Here 2 lams of 1/32” balsa are used to make the cockpit this and All other structures remain perfectly straight decking. CA them together for strength. and square. Fuselage Construction Detail Cockpit Decking Detail ... -
Page 4: Landing Gear
Halberstadt DIII 36’ Page 3 Adding the Undercarriage Plates Undercarriage Construction Detail Remove from the board and add the plywood formers crosspieces that serve as u/c plates. Adding the Decking Add all the stringers and formers, and carefully trim to size and fit 1/32” sheeting( sheeting is optional). Tail Surface Construction Detail Join the elevators with the 1/8” dowel joiner that is inserted into the carbon tube bearing. Sand the tail parts, rounding off all edges. Don’t add the horns or hinge the surfaces until after covering is complete. LANDING GEAR Decking Construction Detail TAIL SURFACES Lay out and glue parts of the tail surfaces on the plans. Landing Gear Construction Detail Assemble ply landing gear parts and use them as templates for bending music wire reinforcements. CA strengthen the ply portions for strength. Secure the structure with kevlar thread. Attach landing gear to fuselage with kevlar thread. Tail Surface Construction Detail Copyright© 2005‐11 M.K. Bengtson All Rights Reserved Rev 07/11 ... - Page 5 Halberstadt DIII 36’ Page 4 DUMMY MOTOR COVERING Assembled Wings and Fuselage Ready To Fit Dummy Motor Detail MOTOR Assembled Components Test Fit Test fit components for proper fit before covering Any lightweight covering material can be used. Polyspan makes a good choice Litespan is also popular. This prototype was covered in Coverlite Downloadable decal outlines are available on‐line at http://www.aerodromerc.com/decals.htm Motor Mount Detail Painting In Progress WHEELS Gluing the ply sides on the ¼ “balsa core makes the Motor Mount Detail basis for the wheels. Use the brass hub for alignment. Epoxy the hubs in place and add a sufficient amount of epoxy around the base of the hub to reinforce the connection of the hub to the ply. Plywood reinforcing Copyright© 2005‐11 M.K. Bengtson All Rights Reserved Rev 07/11 ...
- Page 6 Halberstadt DIII 36’ Page 5 hubs are provided that are to slip over the brass tubing ASSEMBLY as shown. Alternatively, gluing an additional ½” WING square piece of scrap 1/8” balsa with a hole drilled in the center can be substituted. Next, CA glue the neoprene Using Locating Dowels and Aligning Wing Panels cording together to from a “tire”. Use thin CA sparingly The first task is to epoxy the lower wings accurately as the CA bonds very aggressively to the rubber. Press onto the fuselage. Use 5‐minute epoxy for this task. the CA wetted ends together for an instant bond. The Apply epoxy to the wing rib that meets the fuselage. best way to align the ends is to glue them while they are Attach the wings to the fuselage. Use the locating in place on the wheel. Then attach the tires to the wheels dowels to assist with aligning the wing panels. Allow and CA in place. A thin bead of CA around the rim epoxy to set. makes for a secure tire. Paper cones are cut out. Use a ball point pen to score After the lower wings are attached, the struts are each line on the back to make an impression of “spokes” inserted. The top wing is added and epoxied in place. It is helpful to do this operation on a paper tablet so that The triangular formers aid in getting the wing incidence the pen makes a good crease. Fold the paper along the accurately placed. crease lines to exaggerate the raised lines. One of the sections forming a wedge is cut out. Make cuts to the Fitting Tail Surfaces center of the circle along a pair of the spokes. Close the paper cutout to form a cone and tape the joint inside the Slip the control horns onto the wire pushrod ends and, cone. with both the servos and the control surfaces centered, The inside cones may now be attached to the wheels. glue the horns into their slots. The outside cones may be attached at this point if wheel ...
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Page 7: Balancing The Model
Halberstadt DIII 36’ Page 6 Tail Skid Construction Detail BALANCING THE MODEL Balance the model at the point shown. It is best to position the battery to do this operation. FLYING The model should ROG on pavement or hard surfaces. On grass, the model may require hand launching. Be careful that your hand or fingers do not catch on the lower rigging. Launch firmly and level. While the tail surfaces are small, they should not need excessive throws. Let the model gain altitude slowly off the runway. Applying too much up elevator at slow speeds asks for a stall. Make your turns gently as tight turns risk tip stalling in any model. Don’t expect the elevator to make the model climb. Think of the elevator as a device to change the attitude of the model. The wing and airspeed ultimately make the model climb. Often down elevator applied at stalling can avoid a major crash. The most important details for proper flight operations are: 1) CG location. Tail heavy models never fly well or at all. 2) Down and right thrust 3) Straight and non warped wings. CONTACT INFORMATION Distributed by: Bengtson Company e‐mail: sales@aerodromerc.com Web Site: www.aerodromerc.com Copyright© 2005‐11 M.K. Bengtson All Rights Reserved Rev 07/11 ...