RBC kits L39 Albatros Manual Download Page 34

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L39“Albatros“ 90mm edf

Pagina 34

https://hobbyking.com/en_us/corona-ds339mg-digital-metal-gear-servo-4-4kg-0-15sec-32g.html
Main landing gear legs used
4mm steel wire with 1 curl bend in see drawing

https://hobbyking.com/nl_nl/servoless-retract-with-metal-trunnion-
33mm-x-35mm-mount-2pc.html?queryID
=8de21d83961973eaec5e38a475ef6f4c&objectID=3814

We used a midi fan evo with hetrc edf 650-68-1500 and 8 cells 5000

WWW.RBCKITS.COM

Rontgenweg 16G

2408AB Alphen aan den Rijn

Netherlands

Summary of Contents for L39 Albatros

Page 1: ... design CAD Design CAD design allows strength to be built into the airplane without sacrificing weight Accurate parts design and placement ensures a perfect fit CAD Drawn Plans The plans in this kit are not copied from a master set They are originals drawn directly from the CAD program where the airplane was designed We do this because it allows us to use colour which helps you better visualize th...

Page 2: ...for wood thickness averages so occasionally due to variations even in individual sheets some areas might not cut through completely Simply use care in cutting the parts from the sheets most of the time the parts will break out of the sheets Note that due the differences in wood thickness per sheet it is advisable to sand the tabs a bit so they slide in easy also sand the openings so parts slide in...

Page 3: ...pe or PS100 or epoxy 1 litre brushes sanding paper 60 120 180 paint of your choice Wheels as on the drawing controls motor battery etc All vacuumformings should be roughened up before gluing and primed before painting Check the pictures for additional information a picture says more as a 1000 words so do look at the pictures on the cd STUDY THE DRAWING AND PICTURES TO UNDERSTAND HOW THE L39 ALBATR...

Page 4: ... Use the 8mm dowels you can glue them but take care of the length Sheet Place your steering servo inside rudder and route the wiring Sheet other side and make rudder also Place leading edge and pre sand fairings sand rudder and tip ...

Page 5: ...L39 Albatros 90mm edf Pagina 5 Place leading edge at rudder and sand to shape place rudder tip and sand to shape place fairings and sand to shape ...

Page 6: ...from 1 5mm balsa to the plan and sheet assembly do not glue the dowels yet just place them in to help for straightness Turn over stabilizer clean edges and sheet other side Pin down the help formers at their positions and Place sheeting to assembly Place leading edges and tips and sand all to shape Take out elevators and sand to shape making sure for enough deflection ...

Page 7: ...selage with the dowels taking care for straightness in accordance with rudder the elevators have each a separate steering wire the rudder has a servo inside You can make dummy trim tabs looks nicer Wing Place wing drawing under a sheet of clear plastic ...

Page 8: ...cutting the sheets and the wing top view for the glue and cut template and do make oversize And join with tape and ca Take out all parts that are needed for the wings and clean them up with a sanding block from the small holding tabs make up the retract formers with a layer of glass 160 200gr and join with white glue ...

Page 9: ...L39 Albatros 90mm edf Pagina 9 Make the main formers from cnc parts and the 3x3 spruce along a straightedge Place the capping to the mainformers to take the joiners do not glue the joiners in yet ...

Page 10: ...e the Retract former R8 9 into R2 and R3 gluing is ok these parts Make up the wing framing with ribs and formers place retract formers ribs combo step by step place ribs and formers a drop of glue may help holding but do not glue all yet ...

Page 11: ... formers to take the space between formers and sheet sand to shape first then place assembly to sheet Set up the frame work with ribs and main formers and place in position on bottom sheeting Start gluing Main formers to bottom sheeting start at the root and work your way to the tip along the main formers glue bottom front to ribs as last ...

Page 12: ... and aileron leading edges Place servos make openings at bottom and mark hinge lines flap and aileron Note for the flap servo they should be orienting the horn to the left or right for both wings both the same do not forget to place scrap balsa in the mid trailing edge for the wing fasteners Place wing assembly on work plate and fasten at the X marked spots with the 3x6 help former under the wing ...

Page 13: ...we joined the trailing edge with tape and then flipped over the sheet to the top Now mark trailing edge as per plan and cut clear the trailing edge and sand take out ailerons and flaps check disk for pictures Place leading edge sand all as per drawing ...

Page 14: ...d out Do glue with epoxy do not use white glue it will seize direct and you spoiling your wing Use strip of glass 160gr to join the wing Make flap and aileron hinges as per plan Make tip tanks do test fit before gluing tip tanks are 2 halves joined with balsa joiner test fit inner sides and glue test fit outer sides and glue then join ...

Page 15: ...act covers from 0 5mm aluminium sheet and flattened 5mm brass tube When your retract is stalled when retracted most of the time it is because of too tight closing fit a little push will open the set it is binding in closed position we solved this by adding a small piece of wood between leg and housing this keeps the retract open enough to not bind just try with some different thickens of wood shee...

Page 16: ... edf Pagina 16 After fuselage is finished Mounting the wing to the fuselage drill the 5mm for the fasteners place fastener rings line out wing and glue rings to wing Place belly formers and sheeting sand to fit fuselage ...

Page 17: ...e retract 12x3 ply with glass and white glue or epoxy step by step join front retract strip 3x12 with some glass between them Place all formers as per drawing in the sequence as shown Note that F13 is in 1 piece no need for joining we have basically a front part a mid part and a back part of the fuselage and front part formers are placed ...

Page 18: ...ct formers in front place canopy framing F22 place F11 and place F12 Midpart Make former F19 with doubler place F20 to F19 place F29 F31 and F32 Place F25 F26 F27 and place F28 note that all is done without gluing or maybe a small drop to hold parts ...

Page 19: ...th a small drop of glue just to hold them Draw a straight line onto your building board and place the fuselage to the board with the help formers lined out and glue the help formers with a drop of glue to the building board start in the front step by step Join the front and the midpart of the fuselage ...

Page 20: ...L39 Albatros 90mm edf Pagina 20 Place the formers for the back part of the fuselage step by step until you are at the tail end place the Build helpformers F43 F44 to the building board ...

Page 21: ...p in the openings do not glue Line out the fuselage make sure all is straight rudder in line with the fuselage etc maybe you have to loosen a helpformers and push or pull here and there If that is ok then glue in the intake duct sides from 1 5 balsa and duct cut from paper Now the fuselage starts to get stiff and ridged Place some 3x6 anti collapse stringers to the intake duct ...

Page 22: ...ue it to the formers make the large tube from paper roll it up and place into fuselage mark and cut the surplus place it and and when you are sure all is straight glue to formers now the fuselage is stiff and ridgid You can carefully glue the remaining formers with medium ca or thin white glue ...

Page 23: ...e are some small parts to glue to the formers to take the sheeting F39 F40 F21 Start sheeting the top of the fuselage with 2mm balsa sheet 800mm long you also can place the steering cables Cut carefully the openings for the rudder dowels ...

Page 24: ...agina 24 Now start sheeting with 2x12x950 balsa strips do not throw away small leftovers do not cut unnecessary We started with the nose you might want to support the fuselage in the cockpit area Sheet sides as far as you can ...

Page 25: ... for the front and back from leftovers also the steering wire openings Now loosen the fuselage from the building board turn it over we used our medium model stand for this this is really a great help for building and later for assembling and maintenance all models You can place the wing mounts also now with a M5 nut glued in ...

Page 26: ...d former F1 with the 4mm dowels carefully cut the edge of the nosecone for a good fit to the fuselage The tail outlet end is cut to shape as per plan you might fill it up with a piece of paper and the wing fairing formers F16 and F17 are placed also the 0 6mm ply fairing sheet cut to fit ...

Page 27: ...5mm sheet fill the front fairing with balsa scrap and sand to shape Place canopy back from F23 and F24 and 2x12 strip sheet place intake lips and sand to shape Place wing to fuselage place horizontal stabilizer and line out with wing when satisfied glue place fairing from scrap Place Vertical stabilizer and servo wire pre sand the fairings ...

Page 28: ...the wheel wells retract openings in the wing and belly And line with balsa Make the rudder and elevators and flaps and ailerons as per plan Canopy Place canopy formers to CF3 and try fit to fuselage with a canopy latch and the 4mm dowels ...

Page 29: ...els Paint and place pilot figures Cut the canopy to size and clean with window cleaner do not touch it with bare hands or it will Fogg when gluing the canopy to the frame with ca or use canopy glue Place the elevator servos use a zigzag bend for sub trim 1 elevator we used a Y cable ...

Page 30: ...L39 Albatros 90mm edf Pagina 30 Place flap hinge covers from the vacuum formed parts Place steering arms etc we used as much z bends as we can only for flaps we used quick links to trim ...

Page 31: ...steering arm from polycarbonate bend the front shaft leg from 4mm steel Make the hatch from 0 5 alu sheet hammer it in shape with wood dowel or cupping hammer Hinges are screwed to hatch and fuselage Place some ply here We close and open the hatch with a 3 5mm spring from a big O ring alternative method work great is a bit more work and better as shown on the plan ...

Page 32: ...fasteners Place speed controller and receiver also there place battery s in front of fuselage fastened with Velcro and foam for good control of your CG We had a separate receiver battery Nihm 4cell 1500 in the front the cg was no problem that way Finish Fill all dents with lightweight filler and sand Finish wing and stabilizers with 25gr glass fuselage with 50gr glass and use Pu or epoxy or eze ko...

Page 33: ...elevator throws with a more rearward CG Throws of the rudders etc we like them big we steer just around the centre of the sticks but it might be too much for you so always make them large and have a dual rate button in your fingers to small throws is most of the time problems to large it is in your fingers If you need additional pictures check the disk or just ask Have a good build and flight with...

Page 34: ... legs used 4mm steel wire with 1 curl bend in see drawing https hobbyking com nl_nl servoless retract with metal trunnion 33mm x 35mm mount 2pc html queryID 8de21d83961973eaec5e38a475ef6f4c objectID 3814 We used a midi fan evo with hetrc edf 650 68 1500 and 8 cells 5000 WWW RBCKITS COM Rontgenweg 16G 2408AB Alphen aan den Rijn Netherlands ...

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