Tamjets A4 Skyhawk, Assembly And Flight Set-Up Manual

Page 1: ... A4 Skyhawk Assembly and Flight Set up Manual Specifications Wing Span 48 Weight Dry 18 5 21 lbs Fuel Capacity 70 oz Overall Length 70 Radio Min of 8 channels required Turbine Power 13 to 17 lbs thrust turbine ...

Page 2: ... UP Aileron You will find the assembly to be straight forward provided that you follow these instruction in the sequence as outlined An assembly jig is now available from TAMJETS to aid in the alignment of the wings to the fuselage ensuring proper wing and supporting bulkhead alignment Adhesives The following information is provided as a guide for glues and structure fabrication CA or 15 Min Epoxy...

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Page 4: ...Hinges pivot point Servo control arm and linkage hook up ...

Page 5: ...that may cause the fiberglass to BULDGE as we do not want this tight a fit as we must allow for the glue joint as well The TRAY is to remain REMOVABLE 2 When satisfied with all fits sand the fiberglass in the areas of the glue joints and proceed to tact glue bulkheads into place and finish with a bead of Hysol 9462 Allow to cure overnight at room temperature ...

Page 6: ...sand the fiberglass in these bulkhead areas as well DO NOT GLUE AT THIS TIME 4 Locate the forward fuselage bulkhead and drill 3 3mm holes 31 Drill as shown Maintain edge distance to holes 5 Trial fit this bulkhead into the fuselage as shown When satisfied with fit tack into place with CA then finish with Aeropoxy ...

Page 7: ...he fuselage and transfer the location of the 3 3mm holes onto the bulkhead in the nose cone Remove the nose cone and drill clearance holes to install 3 T nuts on the forward side of the Nose cone bulkhead Install the T nuts with CA ...

Page 8: ...des When properly fitted to the fuse the ROOT of the wings should be resting on the JIG SADDLES Support the wings at the tips using the jig supports check the Dihedral as it shall be 0 degrees from wing tip to wing tip as measured at the trailing edge AND 0 degrees INCIDENCE measured at the wing root When satisfied proceed to step 7 Use Velcro straps to secure Fuselage to Jig ...

Page 9: ...shim UNDER the fuselage jig to accomplish this before performing step 7 Maintain this alignment when installing wings and horizontal stabilizers later 7 Slide the wing tube clamps onto each of the 4 wing tubes 8 Install Wing mounting bulkheads Sand these bulkheads if needed to provide 1 32 clearance with fuselage ...

Page 10: ...fully drill the bulkheads for the clamp mounting bolts We also recommending drill lighten holes to the wing formers to reduce weight 11 Sand the fuselage where these bulkheads will be glued Wipe down with lacquer thinner or equal 12 Reinstall these bulkheads back into the fuselage along with the wings Tighten the clamps onto the wing tubes Check all alignments and when satisfied tack into place wi...

Page 11: ... or you can add filler pieces to the outside of the existing rails BUT you will need to glue a 1 16 splice plate under the joint area to reinforce the glue joint 14 Locate and Install the Turbine Mounting Rails as shown using Hysol 15 Locate the parts shown that makeup the forward equipment tray 16 Assemble the 2 tray mounting ears to bulkhead F3 using CA ...

Page 12: ...ded Remember that the TRAY is removable 17 When satisfied with fit reassemble F2 F3 and tray and tack ONLY F3 into place with 15 min Epoxy when cured install F4 and F5 Tray removed for clarity 18 Locate the nose gear mounting plate and install the 4 T nuts Trial fit between F2 and F3 When satisfied with fit glue into F2 and F3 and glue F2 to fuselage Finish with Hysol 9462 ...

Page 13: ...o the REAR of the Main Hatch by locating the pin holes first Then mark the location of the Lever on the top surface of the hatch and remove Repeat for both latches 20 Trial fit and check operation When satisfied glue into place ...

Page 14: ...epeat for both latches 21 Locate a hole in each FRONT corner of the Main Hatch for the mounting of the brass tube pins Epoxy the pins into each hole allowing to stick out Allow to cure NOTE Carbon Fiber Pins can be substituted for the supplied Brass Pins 22 Now transfer the location of the pins to the fuselage as shown then drill to accept the pins This completes the Main Hatch Installation ...

Page 15: ...to mount the canopy frames by Drill a 22 hole to receive the Brass pin NOTE Carbon Fiber Pins can be substituted for the supplied Brass Pin 24 CA Pins into place 25 Mark and drill into Fuselage to receive the pins ...

Page 16: ...n Hatch 28 Locate and cut the latch lever slot into the Fuselage Mount the latch using CA tack Than finish with Hysol 9462 29 Mark the Canopy Frame as you did for the Main Hatch using the latch pin drill to receive the pin Mount the Canopy Frame and check fit 30 Install the Canopy only after you have completed your painting using silicone or RC 56 canopy glue ...

Page 17: ...et pieces just installed The internal inlet ducts are to be removable to service the fuel tanks 33 Fabricate a 1 8 ply saddle that will fit against the Wing tube bulkhead Mount in place with CA or 5 Min Epoxy Be sure NOT to have excessive glue on the forward face of the joint as you want a tight fit against the bulkhead when mounted After gluing into place cut this saddle in half along the Inlet s...

Page 18: ... Sheet Metal screws 35 Trim the Inlet ductings to suite your installation 36 Remove the bell mount from the pipe first Slide the pipe from rear forward Use servo screw to secure the pipe to engine rail Use metal heat shield mounted to the engine rail to protect all your air hose and servo wires ...

Page 19: ... insure that the FRONT EDGE of the pipe Bellmouth Inlet is EVEN with the REAR of the Engine Exhaust nozzle Inserting the engine nozzle too far into the tailpipe can result in high engine EGT s 38 Fuel cell and UAT installation Diagram ...

Page 20: ...39 Install fiberglass tail cone Use micro screws to secure the cone 40 Install nose gear door air cylinder and closing valve ...

Page 21: ... E Clip and the tire bushing 2 Insert the main gear assy into the pre cut wing opening and position the gear so that the tire is centered in the wheel opening When satisfied mark the four mounting holes remove the gear and pilot drill with 32 drill for 4 4 40 screws Use 1 8 scraps plywood to shims the gear rail if necessary to clear the wheel from hitting the top wing skin ...

Page 22: ...nge is to be aligned wit the Servo output arm 4 With the flap still taped to the wing mark the location of the rear portion of the flap hinge and proceed to cut slots for these as well When the forward and rear slots have been cut trial fit all hinges 5 When satisfied with fit and alignment glue into place with 15 Min epoxy Wipe off any excess with lacquer thinner or alcohol ...

Page 23: ... wings in the hinge area to allow for the ailerons to fit into and rotate properly 7 Locate the aileron hinges and trial fit them to the wings 8 Lubricate the hinge pins with a very small amount of Vaseline to prevent glue form sticking to them ...

Page 24: ...es in the AILERONS only DO NOT try to glue hinges into both the Ailerons and Wing at the same time as it is to difficult to keep the hinges aligned properly Make sure to glue the hinges at the correct pivot point 10 When cured repeat the procedure and install the hinges into the Wings ...

Page 25: ...11 Install wheel pod Note try fit the wheel pod to made sure you had the correct side before doing any work ...

Page 26: ...hatch Sand the bottom of the servo trays to insure good adhesion with the Epoxy This procedure is duplicated for ALL flight control servos 13 Cut 1 8 off the screws supplied with the servo trays as they will protrude thru the Top of the skins if not cutoff 14 Epoxy servo trays into position with 15 Minute Epoxy Repeat for both Wings ...

Page 27: ...on as this will be transferred to the cover 16 Trial fit the cover in place and mark the cover cutout Stab Servo Cover used as a ref only for this task 18 Remove the cover and cutout this opening Place the cover back inot place and check fit Modify as needed ...

Page 28: ...TORS 1 Remove the flashing from the ends of the stabilizers to allow for the elevators to fit into and rotate properly 2 Locate the elevator hinges and trial fit the elevators to the stabilizers DO NOT GLUE INOT PLACE at this time 3 Proceed to install the servos and hinges in the same manner as you did for the Ailerons NOTE Cut 1 8 off the screws supplied with the servo trays to prevent them from ...

Page 29: ...he Elevator Horn buy alignment with the servo output arm Mark the bottom of the Elevator with the Horn Location 4 Cutout a slot equal to the Horn width 5 Cut the horn as shown to obtain a proper fit into the slot ...

Page 30: ...aside until final assy to fuselage RUDDER 1 The Rudder is hinged in the same manner as the other surfaces as is the Rudder servo installation The Rudder servo is however mounted to the COVER in the Vertical Fin 2 Fabricate the Rudder pushrod from 2 56 rod and Clevises This completes the Rudder and Servo installation ...

Page 31: ...insert the stabs into the fuselage 3 Check the distance from the tips of both stabs to the work surface They are to be identical If they are not make corrections in the holes in the fuselage or stabs to acquire proper alignment DO NOT GLUE STABS in place AT THIS TIME 4 Check the stab incidence and insure that it is 0 degrees and the stabs should match up to the molded faces of the fuselage Be sure...

Page 32: ... the beginning of this manual Locate all batteries forward to help achieve aircraft balance to eliminate the need for ballast 6 Install the Turbine and all associated equip PER THE MANUFACTURERS directions Locate all turbine associated items on the Equipment Tray NOTE you may need to shim the turbine mounts to achieve the proper thrust line 0 degrees Jetcat P 60 shown ...

Page 33: ...7 Install the retract air support system with the Air valve and servo on the equipment tray or on the side of the fuse ...

Page 34: ...ir Quick Connect systems and bulkhead as shown Note this hard point Air Quick Connect systems require good fitting Otherwise it could leak when wing was not plug in other way You can use the standard Air Quick Connect ...

Page 35: ...9 Hump option installation 10 Tail Hook installation ...

Page 36: ...11 Fuel Probe 12 Left side fin This completes the final assy ...

Page 37: ...rust range Early pre production are powered Jetcat P 60 1 A larger more powerful engine could cause excessive speed and possible control problem or structural fatigue The privilege of operating a turbine powered model aircraft carries with it an increased responsibility Adherence to the manufacturer s specifications and the AMA regulations are included in the responsibility Please give serious tho...