GREAT PLANES Waco YMF-5, Instruction Manual

Page 1: ...red to accept the liability associated with the use of this product the buyer is advised to return this kit immediately in new and unused condition to the place of purchase To make a warranty claim se...

Page 2: ...andling characteristics of this big bipe and the level of detail we ve put into this model This manual details the installation of both a glow and gas engine so please look in the Decisions You Must M...

Page 3: ...umbers are provided in parentheses Glow Engine Option Required Parts If you choose to equip your model with a glow engine you will need to purchase the items listed below Either a two stroke or a four...

Page 4: ...works best for that step the instructions will make a recommendation Whenever just epoxy is specified you may use either 30 minute or 45 minute epoxy or 6 minute epoxy When 30 minute epoxy is specifi...

Page 5: ...as listed in the Replacement Parts List Payment by credit card or personal check only no C O D If additional assistance is required for any reason contact Product Support by telephone at 217 398 8970...

Page 6: ...arm on the splined output shaft so that the arm is 90 perpendicular to the servo case side Clip off the unused servo arms so that your servos look like those in the photo Install the servo arm screw...

Page 7: ...e block Sighting from the back and from the side line up the drill with the marks you made on the blocks 5 Install one 2 x 3 8 9 5mm countersunk sheet metal screw into each block Remove the screws and...

Page 8: ...horn 12 Fit a nylon clevis to a 12 305mm one end threaded pushrod so that the end of the threaded rod extends 1 8 3 2mm into the clevis barrel Fit a silicone retainer onto the pushrod as shown 13 Fit...

Page 9: ...E slot the same way Thoroughly coat the root rib of both wings with epoxy and fit the wings together 20 Fit the two 1 4 20 x 2 nylon wing bolts and use some 64 rubber bands to hold the wings together...

Page 10: ...rod at the servo arm with a nylon Faslink Adjust the pushrod length at the clevis Secure the clevis with the silicone retainer Top wing center section to cabane x4 Cabane strut to fuselage bracket x4...

Page 11: ...the joiners with epoxy Then fit the long L E joiner into the leading edge slot and the short T E joiner into the trailing edge slot Coat the root ribs of the right wing and the right side of the cent...

Page 12: ...ht fairing The smaller radius side of each fairing faces inside With the fairings up against the fuselage wrap some 1 8 EZ Mask tape GPMR1000 or a narrow strip of regular masking tape about 1 16 1 6mm...

Page 13: ...carefully The center handle parts have no bolt holes and there are three of them Glue these three together Glue the other doubled parts together being careful to line up the bolt holes and orient the...

Page 14: ...carrying handle to the cabane struts Leave the handle in place whenever the wings are off of the fuselage This will prevent accidental damage to the cabanes and brackets Horizontal Stabilizer Tailwhee...

Page 15: ...the axle 6 Prepare the three CA hinges for the rudder by inserting a T pin through the center of the hinge 7 Test fit the hinges and the tail wheel into the pre cut slots in the fuselage Test fit the...

Page 16: ...d wick CA into the other side of each hinge Pushrod Control Horn and Servo Installation 1 Turn the model over Slide two 36 914mm pushrods into the left and right elevator pushrod guide tubes so that t...

Page 17: ...e clevis to the outer hole of the rudder horn and slide the silicone retainer into position 8 Use a piece of masking tape to tape each elevator counterbalance to the stabilizer so that the elevators w...

Page 18: ...the screw holes with thin CA 15 Mark the rudder pushrod at the servo arm hole and make a 90 bend Drill a 5 64 2mm hole Install the pushrod on the servo arm and secure it with a nylon Faslink Cut off t...

Page 19: ...les or mark the position of the holes onto the engine mount legs with a felt tipped silver marker 6 Remove the engine from the mount Remove the mounts from the model Drill and tap the holes for 8 32 b...

Page 20: ...pen Remove the pushrod tube and sand the outside of the tube at the place that you marked and at the firewall end of the tube 5 Glue the pushrod tube in place at the firewall using epoxy 6 Thread a ny...

Page 21: ...e the rubber band toward the top of the model as you stretch the rubber band under the bottom side of the tank 3 Fit fuel lines to the tank and route the lines through the hole in the firewall as you...

Page 22: ...ng the rear carb engine If you plan on using a different engine please use the vertical and horizontal centerline crosshair marks on the firewall to line up the template that came with your engine 2 I...

Page 23: ...holes with thin CA 4 Position the inside end of the pushrod tube about 4 102mm from the servo Cut the pushrod tube 3 8 9 5mm forward of the firewall Fit the wooden pushrod tube standoff inside the fus...

Page 24: ...ne with the fuel tank supplied you will need to purchase a fuel tank conversion kit and gas fuel line 1 Solder a set of fuel line barbs onto the fuel lines using silver solder 2 Discard the silicone f...

Page 25: ...carburetor but leave a little extra length in the fill drain line and the vent line Install the Ignition Unit 1 Build the ignition unit and battery tray using a small builder s square or triangle to s...

Page 26: ...witch to the ignition unit Secure both of these connections with heat shrink tubing 6 Cut an access hole in the sub cowl and pass the spark plug lead through it Connect the lead to the spark plug 7 Co...

Page 27: ...make a strap HOOK SIDE LOOP SIDE 1 1 2 38mm 5 Cut a 5 127mm piece of hook and loop material Separate the hook side from the loop side and rejoin them so that 1 1 2 38mm overlaps in the middle to make...

Page 28: ...se the alternate point A typical glow engine installation should not require trimming of the cowl rings Use a drop of thread locking compound on the screw threads 4 Trim the cowl ring to match the mou...

Page 29: ...Then lay the template over the top of the cowl and transfer the outline of the head and muffler cutout to the cowl Warning Wear a dust mask when cutting fiberglass parts Cover up the spark plug hole...

Page 30: ...a very thin layer without much of a fillet at the joint of the cowl to ring Otherwise this would interfere with the aft cowl ring 14 Install the muffler and choke linkage if applicable Install the co...

Page 31: ...l the glue cures Note You can poke pin holes through the covering to help improve adhesion 3 Install the wing fillets using R C 56 canopy glue 4 Using R C 56 glue the wing bolt backing plate to the wi...

Page 32: ...the outer decal to the faceplate Glue the faceplate to the backing plate 2 Fit the panel into the rear cockpit and glue it in place 3 Prepare the front in the same way Pilot Installation Optional 1 T...

Page 33: ...four 4 flat washers and four 4 lock nuts 3 Install the two interplane struts using eight 4 40 x 1 2 12 7mm SHCS eight 4 flat washers and eight 4 lock nuts Note Be careful not to install the struts up...

Page 34: ...to see if they are centered If necessary adjust the clevises on the pushrods to center the control surfaces FULL THROTTLE RUDDER MOVES RIGHT ELEVATOR MOVES DOWN RIGHT AILERON MOVES UP LEFT AILERON MOV...

Page 35: ...f the nose drops the model is nose heavy and the battery pack and or receiver must be shifted aft or weight must be added to the tail to balance If possible relocate the battery pack and receiver to m...

Page 36: ...have remained tight and the hinges are secure Always ground check the operational range of your radio before the first flight of the day following the manufacturer s instructions that came with your r...

Page 37: ...ng the last few moments of preparation your mind may be elsewhere anticipating the excitement of the first flight Because of this you may be more likely to overlook certain checks and procedures that...

Page 38: ...t down the runway hold a bit of up elevator to keep the tail on the ground to maintain tail wheel steering then gradually advance the throttle As the model gains speed decrease up elevator allowing th...

Page 39: ...e top and make certain you are on the desired rates high low rates A flight plan greatly reduces the chances of crashing your model just because of poor planning and impulsive moves Remember to think...

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