GRAUPNER alpina 400i elektro 61797, Руководство пользователя

Страница: 26 / 60

Graupner
GmbH & Co. KG * Henriettenstraße 94-96 * D - 73230 Kirchheim/Teck
*
www.graupner.de
Stand: 2010
20
Installing the canopy retainer.
The Carbon canopy is held in place by a
combination of a forward pin and a rear GRP leaf
spring.
The forward canopy pin is held in place by the
channelled hardwood support. The support is
glued to the inside of the canopy, at a position just
inboard of the forward canopy opening in the
fuselage, using thickened epoxy. Be sure to
roughen the inside of the canopy with abrasive
paper before gluing. The canopy pin is likewise
bonded into the channel in the hardwood support –
such that the pin protrudes about 13mm from the
front of the support to engage with the rim of the
fuselage opening. Once cured, test fit the canopy,
and a 3mm drill or suitable round file to form a
recess in the forward rim of the fuselage opening
to accommodate the canopy pin. Re-check and
trim carefully until a perfect fit is achieved.
The rear leaf-spring is fixed such that the end of
the spring protrudes about 10mm from the inner
rear edge of the canopy Prepare the area 50-60mm
along the width of the leaf-spring for bonding to
the canopy using abrasive paper. Glue the spring
in place first using an instant adhesive and then
bond it to the canopy with one or more layers of
fibreglass cloth (160 g) suitably treated with epoxy
resin.
Strips of self-adhesive felt may be installed along
the inside edge of the canopy to complete the job.
Tip.
Work carefully and accurately. Your
patience will be rewarded by a tight fitting
canopy!
Fig 1. Canopy Retainer
Installing the all-flying tail-plane.
CAUTION! The elevator bell-crank
mechanism is pre-installed in the fuselage, but
is yet to be permanently glued into place.
Attach the all-flying tail-plane making sure that
the rearward steel wire joiner passes through the
hole in the bell-crank installed the fin. Carefully
check the alignment of the tail-plane halves with
the fin.
Prepare a means to hold the fuselage with the fin at
right angles to the work surface. Also prepare
something on which to support the two tail-plane
halves at right-angles to the fin and at the correct
height. A few carefully selected books and/or
Compact Disc holders might well serve as an
adequate jig for this purpose.
Now loosen the two Aluminium nuts holding the
bell-crank bearing in place and make any
adjustment necessary to ensure that that tail-plane
halves can be aligned at exactly 90° to the fin.
Apply a little thickened epoxy to the inside of the
two nuts and carefully tighten, constantly checking
that correct alignment between tail-plane and fin is
maintained at all times.
Leave the entire tail-plane assembled in the jig
described above until the adhesive has fully cured.
Tip:
While working with adhesives in this
area apply thin parcel tape over the sides of
the fin in the area of the bearing and cut
through the tape to expose the holes. This
will ensure that any excess adhesive does not
spoil the finish on the fuselage.
Fig 2. Alignment of the all-flying tail plane
Completing the tail-plane halves.
Work on the uncovered tail-plane panels is limited
to finishing the root outline to match the profile of
the fin. The tail-plane halves are factory finished,
but some may wish to achieve an even more
accurate match by carefully working the root area
using a fine grade abrasive paper.
Note:
The joiner tubes installed in the tail-plane
halves incorporate the integrated all moving TA
Tail-Lock mechanism.
Before fitting the joiners into the brass tubes for
the first time, check that the wire joiners are
perfectly straight and burr free. When pressing the
tail-plane halves into place, you will feel a mild
mechanical resistance which is sufficient to hold
the tail-plane halves securely in-place during
flight.