minicopter Diabolo 2018, Manual

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989 and x4 locknuts M3 008. Please note that the rear landing bow D56b is
about 8mm higher than the front landing bow D56a. Also the front edge of the
bows are straight, while the rear edge are slightly tapered towards the
ends.
After that the rear landing bow is screwed onto the chassis with two hex
bolts M4x8 D104 and the front landing bow will be adjusted lengthwise and
also screwed on. Place between each landing bow and frame one carbon plate
with the grinded radius at the sides as shown on the picture.
The rudder fin will be attached with two hex bolts M3x8 D197 onto the
bellcrank holder D44.
Bag 8: Swashplate and linkage (Step 22-26)
22. Now the control unit (bag 8) is assembled. The roll servos have their
wires threaded through the lower main rotor shaft bearing block and exit
into the long gap between the two U-profiles. Each roll servo is screwed on
with 4 hex bolts M3x12 D119 and 4 washers M3 002.
23. The elevator servo is attached to the upper right side frame D402 with
x4 hex bolts M3x12 D119, x2 distance blocks D420, x4 washers M3 002 and x4
hex bolts M3x6 D196. If the servo grommet blocks are thinner as the Futaba
ones use instead of D119 hex bolts M3x10 D328. The servo cable is pushed
into the frame hole below the servo and the rubber grommet for servo D80 is
put onto the servo cable and inserted into the hole on the side frame.
The best way to bend the servo cable around the corner is with the help of a
small wrench and a long screwdriver, so that it is drawn through the same
slot as the roll servos. The three servo cables are secured with a cable tie
at the base of the vertical U-profile, preferably positioned on the far
left. Do not cut the end of the cable tie short as per usual, but leave a
2cm length, so the cable cannot slide out to the front.
24. The installation of the tail rotor servo is slightly unusual. First the
two L-shaped tail servo holders D23 are screwed onto the rubber grommet with
x4 hex bolts M3x12 D119 and x4 M3 washers 002. If you are using a servo with
2.5mm grommet bushes please omit those. Now the two threaded blocks D23a
will be attached to the inside of the body with x2 hex bolts M3x8 D197, note
the front block lies vertically and the rear block lies horizontally.
For installation the tail servo is tilted into the cut-out, beginning with
the cable outlet, and screwed on with x2 hex bolts M3x16 D329 and a lot of
Loctite. Please take care to attach the tail servo holders as vertically as
possible.
The tailservo unit can also used as "revision door" f.e. to place cables in
the area around the tailboom behind the tailservo slot.
25. Next step the linkages between the servos and the swash plate will be
assembled. For this you push the black swash leveller D121 onto the main
rotor shaft D414 and thread on the swash plate D50. X6 ball joints D72 will
be screwed onto x3 push rods for swash-servo linkage D54 with the help of
the milled wrench D73 and a 4" monkey-wrench or similar. The final length of
the push rods varies, depending on the servo type used. With Futaba BLS471
the length of the roll servo push rods is 102.5mm overall length, measured
after sanding down the injection flash on the ball links. The elevator servo
push rod is 101mm long. The servo arms need drilling holes of 2.7mm (7/64”)
diameter, drilled out very slowly. With the 3mm thick Futaba T-arms (which
two of their arms carefully removed) the outer hole will be used, which has
an arm-lever distance of 18.5mm.
Now the ball joints are attached to the servo arms from the inside with x3
hex lens bolts M3x16 494 and washers M3 002. Because of the servo arm is
drilled to 2.7mm (7/64”) the bolt cuts a thread automatically into the servo
arm. On the rear side of each arm you secure the bolt with an M3 washer 002
and an M3 lock nut 008. Caution: with the elevator servo push rod the ball
joint is attached on the other side.
26. The prepared push rod units are pushed onto the servo output shaft. The
final assembly of these will be done later, since first the neutral position
of the servos, by the flybarless system, has to be found. Now the roll servo
push rods are screwed onto the arms of the swash-outer ring provisionally,
with no Loctite as yet, using x2 hex lens bolts M3x18 D104 and 2 swash
conical spacer bushes D58. The rear elevator push rod is fitted with a hex
screw M3x30 D331, the anti-rotation device bush (brass) D55 and from the