GRAUPNER Skalar, Руководство пользователя

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elektro
Skalar
30
7. Tail boom
7.1 Assembling the tail boom struts
(bag SKR-1)
Press two strut ends 1292.11 into each of the two aluminium tail boom struts 4445.8 and 4475.8
as far as they will go, and set them parallel to each other. Drill 1.5 mm Ø pilot-holes in the struts
where the strut ends are located, and fit 2.2 x 6.5 mm self-tapping screws to secure the ends.
Apply bearing retainer fluid to the M3 x 25 studs, and screw them into the two cabin stand-off
pillars 4445.12. Screw them in as far as they will go, and allow the fluid to cure fully.
7.2 Preparing the mechanics to accept the tail boom
Fix the tail boom mounting bracket 1292.5 to the bearing holder 4448.14 (part of the main me-
chanics) using two M3 x 16 socket-head cap screws. Press the M3 x 12 socket-head cap screw
and M3 nut into the clamp and temporarily tighten the screw. Undo the screw again to the point
where the tail boom can be slid into place later.
7.3 Preparing the tail boom
(bag SKR-2)
The tail boom features a curve at the
front
end, with the effect that the tail boom rises towards
the tail rotor. This has a dual purpose: it increases the tail rotor ground clearance, and also
means that the tail rotor drive shaft runs in a broad curve, and therefore cannot run out of true.
Push the two shaft bushes 1292.10A into the tail boom 4445.9 using a tool such as a length of
beech dowel: the front bush should be 200 mm from the front end of the boom, the rear bush
300 mm from the tail end; the spherical recess of each bush should face forward. Now press the
guide ring 4451.7 into the tail boom from the front, with the tapered opening facing the tail, and
position it exactly 27 mm from the front end of the tail boom. The purpose of this ring is to guide
the retaining sleeve accurately over the yoke of the quick-release coupling.