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SIG MESSERSCHMITT Bf-109, Инструкция по сборке, Страница: 9 / 20

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RUDDER & ELEVATOR SERVO INSTALLATION:
As mentioned earlier, the rudder and elevator servos do not need
to be the sub-micro type used for the aileron servos. We used
Hitec HS-81 servos in our Bf-109 prototypes to take advantage of
their higher torque.

In the following steps you will need the following parts:

❑

2 ea.

1.25 mm dia. x 597 mm wire pushrods

❑

2 ea.

Rudder & elevator servos (not included)

❑

1) From the kit contents, locate the two 1.25 mm dia. x 597 mm

wire pushrods. Note that these pushrods are supplied with a "Z"
bend at one end - this is the end that will attach to the servo 
output arm. From the canopy/hatch opening in the fuselage, insert
the straight ends of the pushrods all the way into the two guide
tubes behind the servo tray. Straighten these pushrods as needed
to get smooth and easy travel.

Note: The pushrod guide tubes cross within the fuselage so that
the pushrod for the elevator exits the left side of the fuselage while
the servo is on the right side of the servo tray and the rudder is just
the opposite.

❑

2) Prepare the two servos for installation by first inserting the

rubber grommets and eyelets - supplied with the servos - into the
mounting lugs at each end. Remove the servo arm retaining screw
from each servo and then the servo arms.

❑

3) Place the servos into the top of the servo tray. Slide the

servo to the outside of the servo tray opening and hold it there.
Use a pencil to mark the servo mounting hole locations onto the
servo tray. Repeat this process with the remaining servo. Remove
the servos from the tray and use a 1/16" dia. (1.5 mm) bit to drill
pilot holes at the mounting marks just made. Reinstall the servos
and secure them to the tray using the mounting screws that came
with them. Note that the output ends of these two servos are
towards the front of the fuselage.

❑

4) With the servos now mounted, check the relationship

between the two servo output arms when they are in place on the
servos. If there is any interference, then you will have to select or
modify servo arms that will not contact or interfere with each other
during the operation of the servos. Remove the servo arms, then
fit the "Z" bend ends of the pushrods onto the selected servo 
output arms and place the arms back onto the servos with the 
connected drive arms at 90

O

to the servo body as shown.

❑

2) Working through the fuselage wing saddle opening, feed

the motor wires from your ESC forward into the nose, under the
battery tray, until they exit below the motor. Plug the motor wires
into the corresponding wires from ESC and then, slide the excess
wiring back under the battery tray. Make sure to arrange these
wires so that they do not contact the motor.

❑

3) The ESC is now secured to the bottom of the battery tray,

ahead of wing. We suggest using Velcro

®

for this purpose. With the

ESC now in place, feed the ESC battery connector wire along the
side of the battery tray, up to the top of the tray.

❑

4) The receiver is now installed into the fuselage on the 

bottom rear surface of the battery tray. Again, we suggest using a
length of Velcro

®

for this purpose. Insert the ESC receiver lead into

its appropriate throttle receptacle in the receiver.

Using your 

transmitter and flight battery, connect the battery to the ESC 
battery connector and test the motor throttle function. Also, make
sure the motor is turning in the correct direction. Disconnect the
flight battery and turn off the transmitter.

8

Содержание MESSERSCHMITT Bf-109

Страница 1: ......

Страница 2: ...ee Power System section for recommendations Lithium Polymer Battery Pack see Power System section for recommendations Propeller see Power System section for recommendations Motor mounting bolts sized for your particular motor Dremel Tool with a variety of sanding bits An assortment of screwdrivers R 1 Messerschmitt Bf 109 ARF ASSEMBLY MANUAL INTRODUCTION The prototype Messerschmitt Model 109 first...

Страница 3: ... effect on the printed finish However carefully note that certain solvents can and will soften the ink allowing it to be rubbed off The following is a short list of cleaners and solvents that can and cannot be used on the printed finish of your model Use Do Not Use Windex Window Cleaner CA Debonder SIG Model Magic Cleaner Acetone Hexane Alcohol Dope Thinner If in doubt of the suitability of a clea...

Страница 4: ...rs Bag 15 4 ea 8 mm square x 12 mm hardwood for wing servo mounts Bag 16 Tail Brace Bag all parts painted gray 2 ea 2 mm dia x 94 mm wire threaded M2 on one end and an eyelet bent on the opposite end 2 ea M2 R C metal R C links 2 ea M2 knurled lock nuts Sub bag 2 ea Metal tabs drilled two places and bent in center 2 ea T2 x 6 mm PWA screws 2 ea T2 x 8 mm PWA screws 2 ea 3 mm ID x 6 mm silicone tub...

Страница 5: ... for CA glue to fully wick its way across the surface of the hinge and surrounding wood Allow about 10 minutes or so before flexing the ailerons After sufficient time has passed firmly flex each aileron briskly up and down to create free and easy movement We also suggest pulling on the aileron at each hinge location making sure each hinge is firmly in place 4 Remove the four screws from each corne...

Страница 6: ...k this stick loose and unwind the string from the stick This end of the string is secured firmly to the connector end of the servo extension lead we like to tie this string tightly to the connector With the string in place to the connector feed the connector and string into the servo bay while gently pulling on the string at the exit hole in the center of the wing Start the connector down through ...

Страница 7: ...e the edges of these slots are Once the slots are located use a sharp 11 blade to carefully slit the covering from one end of the slot to the other Repeat this with the opposite landing gear slot to its bottom surface Repeat this process on the opposite aileron Use the four M2 x 20 mm bolts and the two plastic control horn backing plate to now mount each aileron horn to the bottom of each aileron ...

Страница 8: ...olts and washers for your specific motor We always suggest using a non permanent thread locking compound for these bolts such as Loctite Blue This simple precaution works very well to keep these bolts in place under vibration 7 2 Attach the gear doors to the inside of the gear legs using the metal clips M2 x 8 mm bolts M2 nuts and M2 washers Note that the bottom edges of these doors are made with ...

Страница 9: ...unting marks just made Reinstall the servos and secure them to the tray using the mounting screws that came with them Note that the output ends of these two servos are towards the front of the fuselage 4 With the servos now mounted check the relationship between the two servo output arms when they are in place on the servos If there is any interference then you will have to select or modify servo ...

Страница 10: ...he slot Remove the fin from the fuselage and use a sharp 11 blade to The servos are now tested using the radio system Connect the appropriate rudder and elevator servo leads into the receiver turn on the transmitter and connect the flight battery to the ESC lead Make sure the rudder and elevator trims are at neutral Test the servos with the transmitter for proper movement and the alignment of the ...

Страница 11: ...coat both sides of the fin slot in the fuselage again with white glue Carefully slide the fin into the fuselage slot and wipe off any excess glue with a wet paper towel As before check and then double check the alignment The trailing edge of the fin is in alignment with the fuselage tail post the horizontal stabilizer is perfectly level with the wings and the vertical fin is sitting at 90O If need...

Страница 12: ... with epoxy glue Use a piece of business card to now work some epoxy glue into the fuselage hinge slot cleaning up any excess Now insert the brass hinge half partially into its slot in the fuselage and engage the two CA hinges into their slots in the rudder Press the rudder in place to the fuselage and fin The two rudder CA hinges can now be glued in place using the same method described earlier d...

Страница 13: ...the pushrod connector stub into the last outer hole in the elevator control horn and secure it to the horn with the metal cup washer Repeat this procedure for the rudder pushrod installing the pushrod connector stub into the second inboard hole in the rudder control horn as shown Turn on your transmitter and power up the receiver with your flight battery pack Once again check the rudder and elevat...

Страница 14: ...er the cockpit From the kit parts locate the canopy and the four T2 x 6 mm PWA mounting screws In top view the canopy is centered over the cockpit with approximately 1 8 of its rear edge extending back past the rear surface of the slanted cockpit fuselage former Use small pieces of tape to hold the canopy in this position Use the four T 2 x 6 mm PWA screws threaded through the provided holes in th...

Страница 15: ...arks on the edge of the cone Tape the template in position and trace the outline of the blade cutout onto the cone Move the template over to the opposite mark tape it in place and use pencil to trace the remaining blade cutout outline The prop blade cutouts are now made in the spinner To make this relatively easy and accurate we used a Dremel Tool with a highly tapered sanding bit followed by sand...

Страница 16: ...de down Locate the balancing fixture at the two 2 1 2 marks on each side of the wing next to the fuselage sides If the model is properly balanced it will be suspended perfectly level If the nose hangs down the airplane is nose heavy and conversely if the tail hangs down the model is tail heavy A slightly nose heavy model is certainly the lesser of two evils However a tail heavy condition must be r...

Страница 17: ...ft and right turning ability If you don t make any adjustments needed to achieve positive ground control Once you are satisfied with the taxi tests line the model up with the center of the runway with the nose pointed directly into the wind Hold a little up elevator and smoothly advance the throttle do not throw the throttle fully open all at once The model should roll forward smoothly tailwheel o...

Страница 18: ... favor and check everything now The second flight should be even more fun because you now have a trimmed model MAINTAINING YOUR Bf 109 Getting into the habit of routinely performing maintenance and inspection of your Bf 109 will keep it looking good and flying good for a long time Full scale airplanes receive this kind of routine treatment and fly safely for years Your R C model aircraft should re...

Страница 19: ... size or full size are not toys Because of the speeds that airplanes must achieve in order to fly they are capable of causing serious bodily harm and property damage if they crash IT IS YOUR RESPONSIBILITY AND YOURS ALONE to assemble this model airplane correctly according to the plans and instructions to ground test the finished model before each flight to make sure it is completely airworthy and...

Страница 20: ......

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