GRAUPNER Heim Eurocopter Bo 105 CBS Mode D'emploi page 63

®
Bo 105 CBS
1.10 Installing the silencer
The basic rule is that the silencer must be installed in such a way that it does not touch the
fuselage at any point, otherwise the result will be extra vibration (and noise), and excess heat
could even damage or distort the fuselage moulding. For these reasons the silencer must be
installed with particular care.
If you are using one of the recommended motors and the matching (universal) compact
silencer, we recommend fitting the silencer console (4450.149) to provide further support. The
console braces the silencer firmly in position relative to the chassis, and this makes it much
easier to remove and install the mechanical assembly for maintenance work. The console has
to be installed in such a way that it suits the requirements of the model, i.e. so that the silencer
tail pipe can be extended with a short piece of silicone hose and run out of the fuselage through
a hole of minimum size.
You may find it helpful to bend the rear end of the tail pipe slightly, although a better solution is
to use an angled silicone exhaust hose, Order No. 1383.10, or an angled stainless steel tail
pipe, Order No. 2254.
If you are using a four-stroke motor the silencer is usually shorter, which means that the
exhaust can be run out of the fuselage at a different point via a short length of hose.
1.11 Attaching the plastic parts: access hatches, glazing panels etc.
Cut the ABS dummy skid connecting flanges to shape as shown in the illustration, and paint
them matt black.
These parts are best fitted as follows: undo only one of the self-tapping screws which connect
the skid bar to the skid tube, then glue one of the dummy flanges to the skid tube, centred on
the skid bar. Drill the hole through the skid tube, then fit the self-tapping screw again and tighten
it fully.
25