Manual Multiplex Easyglider Pro 21 4226 (page 13 of 52) (English, German, French, Italian, Spanish)

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Extend the slot in the rudder 5 downward by about 3 to 4 mm, as

this makes it easier to install the rudder and tailplane at a later

stage.

Fig. 14

10. Attaching the horn to the rudder

Use a pair of side-cutters to cut down the projecting spigot of the

rudder horn 24 to a length of about 2 mm. Insert the swivel

pushrod connector 25 in the second hole from the inside of the

rudder horn 24, and secure it with the washer 26 and nut 27.

Caution: note the orientation of the swivel connector! Tighten the

nut very carefully so that the barrel swivels smoothly: it should

not wobble, but must not jam. Apply a tiny drop of cyano to the nut

(on the tip of a pin) when you are satisfied. Fit the grubscrew 28

in the threaded hole in the swivel pushrod connector 25 using

the allen key 29 provided. Apply cyano activator to the moulded

recess in the rudder, then glue the rudder horn 24 in the recess,

with the row of holes facing the hinge pivot axis.

Fig. 15

11. Freeing the elevator and rudder

Cut a 1 mm slot at each end of the elevator, which is attached to

the tailplane 12. Move the rudder and elevator to and fro repeatedly

in order to make the hinges free-moving - do not separate the

control surfaces!

Fig. 16

12. Attaching the horn to the elevator

Insert the swivel pushrod connector 25 in the outermost hole in

the elevator horn 24, and secure it with the washer 26 and the

nut 27. Caution: note the orientation of the swivel connector!

Tighten the nut very carefully so that the barrel swivels smoothly:

it should not wobble, but must not jam. Apply a tiny drop of cyano

to the nut (on the tip of a pin) when you are satisfied. Fit the

grubscrew 28 in the threaded hole in the swivel pushrod

connector 25 using the allen key 29 provided.

Apply cyano activator to the moulded recess in the elevator, then

glue the horn 24 in the recess, with the row of holes facing the

hinge pivot axis.

Fig. 17

13. Gluing the fin to the tailplane

Glue the fin 13 to the tailplane 12, setting it exactly at 90°.

Check this with a tool such as a setsquare.

Fig. 18

14. Gluing the tail assembly to the fuselage

Position the tail assembly on the fuselage “dry” (no glue), and

check that the parts fit correctly: first insert the hinge 31 in the

rudder 13, then slide the assembly forward onto the fuselage.

Check in particular that the tailplane 12 is a snug fit on the

fuselage, without any gaps, and lies parallel to the wing saddle

at the front of the fuselage. You can check this by laying the GRP

wing joiner 40 on the wing saddle, fixing it in place exactly at

right-angles to the fuselage centreline using paper masking

tape. Now sight along the fuselage from the nose, and align the

tailplane with the wing joiner. When you are confident that the

parts can be positioned correctly, the tail assembly can be glued

to the fuselage permanently. Check once more for correct

alignment and a close fit before leaving the glue to harden. A little

extra care at this stage is well worthwhile, as it avoids long-term

disappointment in a model which refuses to fly straight.

15. Securing the rudder and elevator pushrods

Slip the wire pushrods 41 and 42 through the swivel pushrod

connectors 25, set the servos and control surfaces to neutral

(centre), and tighten the socket-head grubscrews 28 in the

connectors to secure the pushrods.

Figs. 19 + 20

Completing the wings

16. Freeing the ailerons

Cut a 1 mm slot at each end of the ailerons, which are attached

to the wing panels 8 and

9. Move the ailerons to and fro repeatedly

in order to make the hinges free-moving - do not separate the

control surfaces!

Fig. 21

17. Attaching the horns to the ailerons

Insert the swivel pushrod connectors 25 in the outermost holes

in the aileron horns 24, and secure them with the washers 26

and the nuts 27.

Caution: be sure to produce a handed pair (different left and

right)! Tighten the nuts very carefully so that the barrels swivel

smoothly: they should not wobble, but must not jam. Apply a tiny

drop of cyano to the nuts (on the tip of a pin) when you are

satisfied. Fit the grubscrews 28 in the threaded holes in the

swivel pushrod connectors 25 using the allen key 29 provided.

Apply cyano activator to the moulded recesses in the ailerons,

then glue the horns 24 in the recesses, with the row of holes

facing the hinge pivot axis.

Fig. 22

18. Installing the aileron servos

Set the servos to “neutral” (centre) from the transmitter, and fit

the output arms on the servos at 90° to the case sides - 1 x left

and 1 x right (mirror-image pair).

Trial-fit the servos in the moulded recesses in the wing panels 8

and 9: you may need to carry out minor adjustments to suit the

type of servo you are using. Apply a drop of hot-melt glue to each

slot in the wings for the servo mounting lugs, and immediately

press the servos into the recesses; apply an extra drop of glue if

necessary.

Fig. 23

19. Installing the aileron pushrods

Connect the pre-formed end of the steel pushrods 30 to the

outermost hole in the servo output arms, and slip the plain end

through the swivel pushrod connectors 25. Set the ailerons and

servos to neutral, and tighten the grubscrews 28 to secure the

pushrods.

Fig. 23

20. Deploying the aileron servo leads

Lay each servo lead in a curve running towards the wing joiner

channel, and extend it with a 400 mm extension lead: the leads

can either be soldered together or connected using the standard

plug and socket. You will find a notch in each of the spar covers

10 and 11 designed to accommodate the connectors. Now deploy

the extension leads in a straight line along the front face of the

spar channel, standing on edge.

The servo leads must project from the underside of the wing

roots by 60 mm on the left and 75 mm on the right, as this makes

it possible to connect them to the extension leads glued in the

cable holders 36. The remainder of the extension leads can be

stowed in the channel and secured.

Figs. 23 + 24

21. Installing the spar covers

Carefully trial-fit the spar covers 10 and 11 in the wing panels 8

and 9. When you are confident that the covers are a close fit, and

can be installed flush with the wing surface, they can be glued in

place permanently using cyano. Ensure in particular that no

adhesive gets onto those surfaces of the wings into which the

GRP wing joiner 40 will be inserted later. Please don’t fit the

wing joiner 40 in the wings until you are certain that there is no

active adhesive inside the channels. The best way to ensure

this is to spray activator inside and wait for about five minutes. If

you neglect this warning, you may find that you can

never sepa-

rate the wing panels again.

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Multiplex Easyglider Pro 21 4226 Manual

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