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Gruner F5J, Assembly Manual, Page: 21 / 38

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Gruner F5J Assembly Manual Download Page 21

37

Sheet 73.12
Parts F22

Sheet 73.04
Part F23

●

Glue the connecting rib F23 between two F22 ribs. Clamp to straight board until the 
glue sets (thick CA).

NOTE:

This can be done in one or two stages.

NOTE:

Pins F68 can be used to align the pieces together but do not glue into place at 

this

 

time.

38

Sheet 72.11
Parts F33

●

Grind the end sprits F33 at the rear edge to the marking line

NOTE:

 

When you see two layers of plywood it's enough

Summary of Contents for F5J

Page 1: ...llowing contributors Fabien Gagné FabFlight Canada Christopher Kerrigan Cricklewood Canada Dario Ernst NebuK Karlsruhe Germany Anthony Eden aerotony Australia Grüner can not be held liable for consequential damages that may arise during the operation of products from our product range Observe all notes intended for use addendum No liability for misprints The reproduction of texts and text extracts...

Page 2: ...tail feathers Due to the long nose and lightweight drive components balancing the tail is as easy as possible Specific glue icons are shown in the relevant sections of the building instructions NOTE In this English translation the type of glue is specified between parentheses instead For superglues we recommend using normal cyanoacrylate CA and thick cyanoacrylate thick CA with a slower set time T...

Page 3: ...n and cover with transparent film cling wrap film or polyethylene Glue together the tailplane parts H1 to H8 thick CA 2 Sheet 72 08 Parts H9 H12 Check the fit of diagonal braces H9 to H12 and glue into place without warping theframe thick CA ...

Page 4: ...ed if building a removable elevator Glue ply pieces H28 in the holes of the centrepiece H3 thick CA 4 Sheet 72 08 Parts H13 H25 Glue the elevator parts H13H20 thick CA Check fit then glue the diagonal braces H21 to H25 without warping the frame thick CA ...

Page 5: ...lywood elevator connectors H28 thick CA Figure 2 and 3 Glue the connectors to the centre of the elevator thick CA Figure 4 Sand the tailplane and elevator according to thesections shown on the plan 6 Sheet 72 07 Parts S1 S7 Glue the rudder parts S1 to S7 thick CA ...

Page 6: ...arts S8 S16 Glue the rudder parts S8 to S16 thick CA 8 Sheet 72 07 Parts S17 S22 Check fit then glue the diagonal braces S17 to S22 without warping the frame thick CA Sand the rudder to the sections shown on the plan ...

Page 7: ...front of the drilled hole and behind the drilled holein the righthand fuselage side 10 Sheet 72 05 Parts R3 R5 NOTE Build experience from the EN translators suggests to perform the following three steps in reverse order Glue together the lower fuselage doubler parts R3 front and R4 rear thick CA Glue the lower fuselage doublers R3 R4 flush with the fuselage side thick CA Beware of the pushrod hole...

Page 8: ...2 05 Parts R8 R17 Glue the stiffeners R8 to R17 thick CA NOTE Pay attention to the orientation of the slots in R12 to R16 to accept the fuselage stiffeners R23 to R27 in step 19 The slot in R16 is reversed compared to the slots in R12 to R15 This is to ensure correct alignment of the pushrod sleeves and smooth running of the pushrods ...

Page 9: ... 13 Parts R18 R19 R21 Small parts bag Part R61 Align and glue together stack both R21 parts using clamps thick CA Align and glue together stack R18 and R19 using clamps thick CA Glue the nut R61 using epoxy 5 minutes epoxy WARNING Ensure no glue gets into the threads ...

Page 10: ...at right angle 5 minutes epoxy Glue the R20 and R21 ribs exactly perpendicular thin CA 16 Glue the second fuselage sidewall assembly Use the same adhesives as in step 15 Check with a right angle that the fuselage sides are properly aligned with each other ...

Page 11: ...rform this task installed over a plastic film 18 Sheet 72 05 Part R28 OPTION detachable tailplane Sheet 72 14 Parts R28 1 R28 2 NOTE The building step shown here describes the tail holder for a DETACHABLE elevator If a nonremovable elevator will be installed use balsa part R28 from sheet 72 05 to save weight Glue part R28 1centrally to part R28 2 thick CA Glue the nuts R63 in place 5 minutes epoxy...

Page 12: ...ht and that the fuselage sides are vertical 20 Still over the plans covered with plastic wrap glue the tail holder from step 18 Make sure the fuselage is straight and true thick CA File sand a Vshaped slot opening see marking in the small picture to provide free movement for the elevator connector When making a nonremovable elevator you will sand through this part a bit However this is not critica...

Page 13: ...use tail file or a 2 mm drill bit rework the slots for the pushrod guide tubes Install the guide tube R29 and check the smooth running of the pushrod wire R56 Glue the guide tubes 5 minutes epoxy 22 Sand the fuselage ribs flush to the fuselage side parts ...

Page 14: ...lage sheeting parts R30 to R39 thick CA Adjust the cutout for the rudder on part R39 to the fit the rudder 24 Sheet 72 01 Parts R40 R48 Glue the top fuselage sheeting parts R40 to R48 thick CA NOTE Be careful that the fuselage does not warp twist ...

Page 15: ...0 and R51 together at the abutting edges pict 2 thick CA Glue the holder R49 front flush and centered on the sheeting R50 pict 3 thick CA The hatch cover can be retained by a either wire or magnetic closure For the wire closing use a short piece of guide tube R29 For the magnetic closure glue a bar magnet R65 in the cap holder picture 3 The magnet in the battery compartment should only be glued af...

Page 16: ... that the motor will turn freely after gluing the bulkhead Insert the motor and wires into the nose block with the motor bulkhead F55 attached Using a small amount of glue tack the motor bulkhead R55 to the motor nose block and leave to dry thin CA Remove the motor discard the paper and glue R55 securely to R52 thin CA 28 Sand the fuselage to round edges etc according to crosssection on the plan ...

Page 17: ...le glue thick CA WARNING It is important to leave clearance for clip F81 so do not get glue into this space NOTE The kit contains four clips F81 two of which are spares Glue the second rib F6 and clamp to a straight board until dry thick CA 30 Sheet 73 12 Part F3 Sheet 73 09 Part F2 Glue the center rib F2 on the plywood rib F3 thick CA Glue the second plywood rib F3 and clamp assembly to to a stra...

Page 18: ...flat base of the ribs must rest their entire length on the building board Align the ribs vertically and glue to spar tube F1 and to trailing edge F12 thin CA Use thick CA to fill the gaps if void can still be seen between the spar tube and the ribs The ribs must be glued around the entire circumference of the spar thick CA Using a small round file shape the spar cutouts in the two rib combinations...

Page 19: ...heet 72 09 Parts F15 F16 NOTE All reinforcements are glued flat down on the plan Double up reinforcements F15 thick CA Checkfit the two doubled F15 trim as required then glue in thin CA Glue in the two inboard reinforcements F16 thin CA Checkfit and trim the outboard reinforcements F16 to match the angle of the combination ribs F6 F4 F6 and glue into place thin CA ...

Page 20: ...n tube with a fine metal saw carefully and sand completely flush 36 Sheet 73 13 Parts F72 F75 Glue together the servo covers from parts F72 F73 and F74 thin CA WARNING Ensure to assemble three lefthanded and three righthanded servo covers according to the plan Glue the covering frame crossmember F75 flush with the servo frame F10 thick CA Sand the complete wing center panel ...

Page 21: ...t board until the glue sets thick CA NOTE This can be done in one or two stages NOTE Pins F68 can be used to align the pieces together but do not glue into place at this time 38 Sheet 72 11 Parts F33 Grind the end sprits F33 at the rear edge to the marking line NOTE When you see two layers of plywood it s enough ...

Page 22: ...tween the ribs F26 and F27 Pin the trailing edge F33 over the plan WARNING Ensure that F33 is correctly orientated The identification F33 on the part should be visible closest to the central wing panel on the rear face of the trailing edge The ribs will then correctly match the angled slots in the upper face of F33 Align and glue all ribs to the trailing edge strip thick CA Align all ribs at right...

Page 23: ... F34 F39 Glue the leading edge F13 to the ribs Glue the half ribs F34 to F39 to the leading edge and the spar 42 Sheet 72 11 Parts F44 Grind the end sprits F44 at the rear edge to the marking line NOTE When you see two layers of plywood it s enough ...

Page 24: ...hen correctly match the angled slots in the upper face of F44 Align and glue all ribs to the trailing edge strip thick CA Align all ribs at right angles and glue to the spar thin CA 44 Long parts bundle Part F43 Sheet 72 04 Parts F45 F54 Glue the leading edge F13 in place thin CA 2 Glue the half ribs F55 to F63 in place thin CA ...

Page 25: ...trailing edge Figure 2 3 Sand spar tubes and leading edge flush with the end ribs 46 Part F46 Sheet 72 04 Parts F45 F54 Cut F69 stock triangular balsa bar in the center to create the two wingtip braces Glue the wing tip brace to the rib F54 flush with the lower edge of F54 thick CA ...

Page 26: ... the wingtip flush with the top of the rib Use the aileron F86 as a guide Glue the wing tip F70 flush with the bottom edge of the outermost wing part Sand the wing tips 48 Sheet72 12 Parts F18 F19 For the wing joiner tube glue F18 2 pieces and F19 2 pieces together thick CA ...

Page 27: ...ed side is flush Figure 3 Glue in the brass tube 90 minute epoxy Figure 4 Checkfit then glue two F17 fillers to retain the brass tube on one side of the wing joiner thin CA Repeat with the other two F17 fillers 50 Gently sand the holder to fit snugly but not tightly into the spar NOTE Build experience from the EN translators suggests to make it slides in easily too snugly might split splice your s...

Page 28: ...er doublers F66 together thick CA Repeat for the other two filler doublers Checkfit and glue these doublers to secure the joiner rod F67 thin CA 51 Sheet 72 17 Parts F71 Sand the connector F71 at the splices so that it fits into the spars F21 and F43 WARNING The connector should slide in easily any force required may damage splice the spar Remove the connector Figure 1 Apply glue to the inside of ...

Page 29: ...rod assembly is flush with the connecting rib and that the rod is aligned vertically 54 Figure 1 Seal the end of the wing joiner tube assembly by applying a transparent adhesive tape onto the protruding end of the tube its side and over the F19 endpiece Trim tape flush around the F19 endpiece This is to prevent glue from getting into the tube Figure 2 Apply another piece of adhesive tape to the ot...

Page 30: ...o hold it in place Leave to dry and then remove the tape 55 Small parts bag Parts F68 Checkfit alignment pin F68 into the holes in combined ribs F22 F23 F22 Ensure that it will mate with the matching hole in the combined ribs F6 F4 F6 Glue in place 90 minutes epoxy Apply a fillet of epoxy to all joints between the spars and the connecting end ribs 90 minutes epoxy ...

Page 31: ...lled faces of the hinge Figure 1 Cut off all outer edges with 35 mm excess and iron on Iron the covering on the second side rudder straight and flat with a 35 mm excess overlapping the top side Trim the excess and iron down Figure 2 57 Elevator Cut the covering for both sides of the the elevator with about 2 cm overhang First iron the covering on the side with the bevel and the pieces folded back ...

Page 32: ...overlap on the flap side should be about 9 cm Iron the covering to the top of the trailing edge completely Flip the flap completely over the bottom of the wing and iron the covering to the side of the trailing edge and the side of the flap effectively forming the hinge Trim to an overlap of 3mm at the edge of the flap and iron on 59 Wing Iron the covering to the top of the root rib Trim overlap to...

Page 33: ...er ribs 61 Wing The procedure for covering the outer wing panels is the same Cut out the covering for all wing panel with enough overhang Fix the ailerons with a small strip of covering Figure 1 Iron the covering onto of the ailerons completely cut off with 3 mm overlap and iron onto the top of the wing Fold covering over the leading edge Figure 2 and iron to the bottom of the wing up and includin...

Page 34: ... an overlap of 35 mm and iron on For the battery hatch cut the covering with a maximum of 2 mm overlap and iron on 63 Sheet 72 12 Part F82 Cover the servocover The openings for the servo arm and screwholes can be cut with a hot soldering iron You can also cut the holes for the servo hatch mounting screws and the oblong hole in the battery hatch Cut out the openings for the servos with 2 mm overlap...

Page 35: ...nutes epoxy WARNING Do not allow adhesive into the guide tube When using the magnetic closure use bar magnet R65 Check the polarity of the magnet when gluing in place of the wire lock Figure 2 Sand and clean the ends of the cables R56 for rudder and elevator control rods Solder a threaded coupler R59 on the end of the control rods and then add a nut R60 and clevis R58 Install the servo tray and se...

Page 36: ...69 for throws adjustments or plan sections E G and H Mount the servo cover with screws F76 67 Long pieces bundle Parts R29 Glue and align the rudder Glue or screw and align the elevator Trim the control rods to length at the rear control horns A small piece of guide tube can be glued to the end of the bend to secure it For a detachable tailplane create a Z bend in the end of the control rod If nee...

Page 37: ...ING Land before battery voltage gets too low Flying Test the model initially by throwing it into the wind Trim to make sure that it flies properly Once the gliding testing is done and everything is okay the motor can be used When using the motor sometimes it is necessary to use down elevator This can be trimmed out by using a mix launch mode on the radio to compensate Flaps can be used for a rapid...

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