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Fokker DVI 35.5" 1/8
R/C Scale Model Instructions
CONTACT INFORMATION
Designed by M.K. Bengtson
Prototype: Chris Baum
Model: Richard Dery
Manufactured and Distributed by
e‐mail: sales@aerodromerc.com
www.aerodromerc.com
Copyright© 2007‐11 M.K. Bengtson All Rights Reserved Rev 07/11
Bengtson Company
th
Scale
Fokker DVI 35.5"
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Related Manuals for AerodromeRC Fokker DVI
Summary of Contents for AerodromeRC Fokker DVI
- Page 1 Fokker DVI 35.5” Fokker DVI 35.5” 1/8 Scale R/C Scale Model Instructions CONTACT INFORMATION Designed by M.K. Bengtson Prototype: Chris Baum Model: Richard Dery Manufactured and Distributed by Bengtson Company e‐mail: sales@aerodromerc.com www.aerodromerc.com Copyright© 2007‐11 M.K. Bengtson All Rights Reserved Rev 07/11 ...
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Page 2: Building The Model
Fokker DVI 35.5” Page 1 Fokker DVI 35.5” 1/8 scale Thank you for purchasing the Fokker DVI 35.5” 1/8 scale model for electric flight. Put small scrap pieces of 1/8” balsa on the notches in the ribs that accept the cabane and IP struts to serve as reinforcements and as a base for covering later. The slotted spars align the ribs so that they are in a true vertical orientation when the wing panels are in raised into position. Model by Richard Dery Model Specifications The forward spar also serves as an attachment point for the More than 240 laser cut parts tabs of the sawtooth shaped 1/32” plywood leading edge Scale: 1/8th extension. Channels: R/E/A/T Wingspan: 35.5” Wing Area: 400 sq in Weight: ~25 oz ready to fly Power System: MP Jet 3.46:1 BB Gearbox Long Can Speed 400 OR AXI 2217 BL motor Prop: ... -
Page 3: Fuselage Construction
Fokker DVI 35.5” Page 2 Build the ailerons and sand the leading edge to shape. halves over the top view. Both systems have their advantages Choose a rounded shape for center hinging or a bevelled shape and drawbacks. The following is the front/back method. for top hinging. Begin by building two rear fuselage frames over the plan and Finished lower wings: allow to dry. Select hard balsa or laminated balsa for the longerons. Add diagonals for a rigid structure. Repeat with the other side. Some builders build the second side over the first to insure they match perfectly. Be sure to use wax paper or Saran Wrap between these or youʹll not be able to get them apart. Join the sides over the top view of the plan and add the cross members and tail skid mount. Check and check again to insure that the structure is square and straight or you will end up with a banana fuselage. Finally add the wedge shaped horizontal Final top wing assembly stabilizer supports. Wait until the front fuselage is joined to add the turtle deck formers and stringers. Build the front half and decking Lay the front sides on the plan and glue them together. The alignment notch insures that they mate properly. On the inside surfaces glue the 1/32” plywood doublers. Use a heavy weight and slow setting glue like epoxy. If a water based glue is used, warping may occur so allow the glue to dry under the weight. Join the sides with the front F1 and back F3 formers and 1/8” ply undercarriage mount cross members. Add the decking and top Aileron servos are attached with short threaded rods to the formers, and carefully trim to size and fit 1/16” sheeting. The ailerons. Aileron servos are fit in servo compartments located in side cheeks can be added after the front and back of the fuselage the lower wings with the supplied 1/32” plywood servo covers. are joined. The rib shaped parts that frame the lower wing root Route servo wires through holes in lower wing ribs. Use a “Y” location are there to support the covering material. wiring harness connector to wire the servos to a single radio connection. Alternatively, two RC channels can be used when ... -
Page 4: Tail Surfaces
LG cross member with Kevlar thread and epoxy in place. Small holes are placed in this part to facilitate the lacing of this thread. Add short pieces of 1/8” brass tubing as bearings/spacers for the wheels. Use rubber bands to act as shock absorbers but make each side exactly as the opposite site. Otherwise, the shock resistance is unequal and your model will cant to one side on every landing. Adding Kevlar cross rigging will dramatically Cabane Struts strengthen the landing gear. The cabane struts are fashioned using 1/16” diameter music COVERING wire bend as shown on the plans. Add balsa fairings at assembly Any lightweight covering material can be used. Polyspan time. The top of the cabanes form a bar that fits into slots in the with dope or Minwax Polycrylic makes a good choice, Litespan wing. Balsa, bass or scrap plywood can be used to fair the is also popular. cabanes. TAIL SURFACES Lay out and glue parts of the tail surfaces on the plans. Decal outlines for this model are available on www.aerodromerc.com/decals in Adobe Acrobat pdf format for printing out on decal paper. Sand the tail parts, rounding off all edges. Don’t add the horns or hinge the surfaces until after covering is complete. Windsock Datafile “Fokker DVI“publication has details on placement and markings. LANDING GEAR The landing gear is fashioned from CA hardened 1/8” Available at plywood. Sand, soak with thin CA and then, securely, epoxy the http://www.byrdaviationbooks.com/ Copyright© 2007‐11 M.K. Bengtson All Rights Reserved Rev 07/11 ... - Page 5 Fokker DVI 35.5” Page 4 WHEELS Gluing the ply sides on the 3/8” balsa core makes the 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 hubs are provided that are to slip over the brass tubing as shown. Next, CA glue the neoprene cording together to from a “tire”. Use thin CA sparingly as the CA bonds very aggressively to the rubber. Press the CA wetted ends together for an instant bond. The best way to align the ends is to glue them while they are in place on the wheel. Then attach the tires to the wheels and CA in place. A thin bead of CA around the rim makes for a secure tire. Paper cones are cut out. Use a ball point pen to score each line on the back to make an impression of “spokes” It is helpful to do this operation on a paper tablet so that the pen makes a good crease. Fold the paper along the crease lines to exaggerate the raised lines. One of the sections forming a wedge is cut out. Make cuts to the center of the circle along a pair of the spokes. Close the paper cutout to form a cone and tape the joint inside COWLING the cone. The back part of the cowling is of built up construction using C1 and C2 and 1/32” plywood. The holes are for the locating dowels that extend from the firewall former F1. (Alternatively, two of these can be enlarged and used as mounting holes for neo magnets.) Construct the front part of the cowl by gluing C3,C4,C5 parts making sure that they are aligned properly. Make a cardboard template from the plan as a guide for sanding the balsa into shape. The inside cones may now be attached to the wheels. The outside cones may be attached at this point if wheel collars are to be used. Alternatively, after installing the wheels on the landing gear, a washer may be soldered to hold the wheel in place and then the cone is attached. This method makes a very nice scale The cowl should now be sealed, sanded and primed until no appearance. wood grain is left showing. Baby (Talcum) powder in clear dope ...
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Page 6: Contact Information
2. Let the model gain altitude slowly off the runway. 3. Applying too much up elevator at slow speeds risks a stall. 4. Make your turns gently as tight turns risk tip stalling in any model. 5. Don’t expect the elevator to make the model climb. 6. Think of the elevator as a device to change the attitude of the model. 7. The wing and airspeed ultimately make the model Fitting the Rigging Wires climb. Use strong thread or Kevlar fishing line or elastic beading 8. Often down elevator applied at stalling can avoid a cording to simulate rigging wires. Use small screws, fishing major crash. hook eyes, straight pinheads or small eyelets to attach the lines. These “wires” can add a degree of strength to your model. The most important details for proper flight operations: Correct CG location and Straight non‐warped Battery hatch Fashion a battery hatch from 1/32” plywood wings. CONTACT INFORMATION ASSEMBLY Distributed by: Bengtson Company The lower root rib locating holes precut IP are designed to e‐mail: sales@aerodromerc.com make alignment of the top wing easy. First attach the lower wing Web Site: www.aerodromerc.com to the fuselage. This is best done before the landing gear is Copyright© 2007‐11 M.K. Bengtson All Rights Reserved Rev 07/11 ...