GREAT PLANES Pitts M-12S, Instruction Manual

Page 1: ...he use by the user of the final user assembled product By the act of using the user assembled product the user accepts all resulting liability If the buyer is not prepared to accept the liability asso...

Page 2: ...www greatplanes com Open the Airplanes link then select the Pitts M 12s ARF If there is new technical information or changes to this model a tech notice box will appear in the upper left corner of the...

Page 3: ...kit has been ight tested to exceed normal use if an engine larger than one in the recommended range is used the modeler is responsible for taking steps to reinforce the high stress points and or subst...

Page 4: ...xy brushes 6 GPMR8060 Mixing sticks 50 GPMR8055 Mixing cups GPMR8056 Rotary tool such as Dremel Rotary tool reinforced cut off wheel GPMR8200 Stick on segmented lead weights GPMQ4485 IMPORTANT BUILDIN...

Page 5: ...a Visa or MasterCard number and expiration date for payment Mail parts orders and payments by personal check to Hobby Services 3002 N Apollo Drive Suite 1 Champaign IL 61822 Be certain to specify the...

Page 6: ...ection on page 5 2 Use a covering iron with a covering sock on high heat to tighten the covering if necessary Apply pressure over sheeted areas to thoroughly bond the covering to the wood BUILD THE WI...

Page 7: ...unting holes with a 1 16 1 6mm drill bit Install the servo onto the servo cover using the hardware included with your servo Center the servo and then install a servo arm as shown 5 Inside the servo ba...

Page 8: ...Make a mark on the wire that aligns with the front of the round portion of the clevis Remove the pushrod assembly from the servo Cut the wire on the mark and then solder the 4 40 solder clevis to the...

Page 9: ...vo arm and the second hole from the end of the aileron control arm Be sure to slide the clevis keepers over the clevis and tighten the 4 40 nut 11 Repeat steps 1 10 for the lower left wing panel the t...

Page 10: ...center section of the top wing centering the tubes 4 Use the same procedure used on the bottom wing to assemble the top wing Mix 3 4 ounces 22mL of 30 minute epoxy Pull the tubes out about 1 25 4mm B...

Page 11: ...of the fuselage 2 Secure the landing gear to the fuselage with three 8 32 x 3 4 19 1mm socket head cap screws 8 lock washers and a drop or two of thread locker 3 Repeat this for the other landing gear...

Page 12: ...Use a straightedge to guide the soldering iron at a rate that will just melt the covering and not burn into the wood The hotter the soldering iron the faster it must travel to melt a ne cut Peel off t...

Page 13: ...lower wing mounted to the airplane do so now Attach a berglass wing strut to the tabs on each of the wings Secure them with 4 40 x 1 2 12 7mm socket head cap screws 4 at washers and 4 40 lock nuts Do...

Page 14: ...rts 3 Glue the hardwood handle into the hole as shown Drill a 3 32 2 4mm hole through the end of each end through the handle and then screw a 4 x 1 2 12 7mm screw with a 4 at washer into the hole you...

Page 15: ...wing The stab should be parallel and in line with the wing If you nd that your stab is not aligned adjust the stab by removing small amounts of the stab saddle with 100 grit sandpaper 3 When you are s...

Page 16: ...onto one half of each of the hinges Insert a hinge into each of the holes in the stab Apply glue into the holes in the elevators and onto the other half of each hinge Slide the elevators onto the hing...

Page 17: ...the stab and n The four brackets with the shallow angle attach to the bottom of the stab 2 Install the brackets in the recesses in the stab and n Secure the brackets with a 2 56 x 1 2 12 7mm machine...

Page 18: ...er and a 2 56 metal clevis onto each of the threaded couplers 8 Attach the long rods between the n and the top of the stab and install the shorter rods to the bottom of the stab and the bottom of the...

Page 19: ...eel pant over the wheel and axle Attach the wheel pant to the landing gear with two 4 40 x 1 2 12 7mm socket head cap screws 4 lock washer and 4 at washer If the wheel is not centered in the wheel pan...

Page 20: ...properly your radio system must have the ability to adjust the servo direction independently from each other If your radio does not have this capability you will need to purchase an after market in l...

Page 21: ...tor and then feed the wire back through the crimp connector Squeeze the crimp connector rmly onto the wire to secure the threaded coupler to the wire Thread a 4 40 nut onto the coupler followed by the...

Page 22: ...mounting are for the Desert Aircraft DA 50 rear carb engine with 3 76mm stand offs If you will be mounting a different brand of engine you will have to modify your installation as needed to accommoda...

Page 23: ...nd a 2 56 threaded balls washer and nuts Choose whichever one best ts the hole in the arms Be sure that you use thread locker on the threads 5 Locate two plywood throttle pushrod supports Glue the lon...

Page 24: ...152mm wire pushrod Cut the threads so only 3 8 9 5mm of thread remain Cut the unthreaded end of the wire so that the overall length of the wire pushrod including the remaining thread is 4 7 16 112mm B...

Page 25: ...g to easily grab onto for activating the choke 13 Cut the 24 610mm white exible pushrod to a length of 16 406mm Thread the 1 25 4mm thread that you previously cut from the wire into one end of the exi...

Page 26: ...is a bit tedious we found that there was room at the front of the fuselage We recommend that you use a heavy duty switch such as the Futaba heavy duty charge switch FUTM4385 and the Ernst charge recep...

Page 27: ...ing the stopper assembly Insert the stopper so the vent tube will be at the top of the tank Then tighten the screw to squish the stopper and seal the tank Shake the tank to make sure the clunks can mo...

Page 28: ...then push the lines onto the holder 11 Place a piece of masking tape on the fuselage in line with each of the wood cowl mounting blocks Measure back 1 25 4mm from the center of each block Mark a line...

Page 29: ...might be interfering with the cowl spark plug boot muf er etc 15 Locate the ABS plastic engine baf e Place it in front of the cowl and mark the location of the cylinder head Cut this area from the baf...

Page 30: ...luminum spinner that has a scale shape and matching color to the airplane Completing the Radio Installation At this point you should have all of the servos installed All that remains is installing the...

Page 31: ...72MHz receiver we have installed a tube for the antenna Route the antenna into the tube 6 Plug all of the servo leads into the appropriate channels in the receiver Depending on your transmitter you m...

Page 32: ...4 40 x 1 2 12 7mm machine screws 4 at washers and 4 lock washers 3 Included in the kit is a cockpit oor To keep some of the weight down you might choose not to install it Installation is completely o...

Page 33: ...y the rest of the decals the same way GET THE MODEL READY TO FLY Check the Control Directions 1 Turn on the transmitter and receiver and center the trims If necessary remove the servo arms from the se...

Page 34: ...decrease the throw according to the measurements in the control throws chart 5 Measure and set the low rate elevator throws and the high and low rate throws for the rest of the control surfaces the s...

Page 35: ...rol horn PREFERRED PUSHROD HOOKUP Here is an optimum pushrod setup the pushrod is close in on the servo arm and far out on the control horn This situation gives the greatest mechanical advantage of th...

Page 36: ...3 If the tail drops the model is tail heavy If possible move the battery pack and or receiver forward to get the model to balance If the nose drops the model is nose heavy If possible move the battery...

Page 37: ...inde nitely Afterward shut the engine off and inspect the model closely making sure all fasteners pushrods and connections have remained tight and the hinges are secure Always ground check the operati...

Page 38: ...e elsewhere anticipating the excitement of the rst ight Because of this you may be more likely to overlook certain checks and procedures that should be performed before the model is own To help avoid...

Page 39: ...altitude before turning into the traf c pattern Flight For reassurance and to keep an eye on other traf c it is a good idea to have an assistant on the ight line with you Tell him to remind you to thr...

Page 40: ...DA 50 R 50cc GASOLINE ENGINE W REAR MOUNTED CARBURETOR UP 3 16 4 8mm THROTTLE PUSHROD 3 16 4 8mm CHOKE PUSHROD DRILL 1 4 6 35mm HOLES FOR MOUNTING BOLTS 66mm 78mm...