GRAUPNER heim Starlet 50 Mode D'emploi page 67

Starlet 50
1.10 Fueltank
The fueltank is assembled as shown in the drawing. First install the pressure nipple in the small
raised area at the highest point in the tank: cut a 5 mm Ø hole, slip the nipple through it from the
inside, and secure it with the washer and nut on the outside. The rubber bung features a central
hole for the retaining screw, two through-holes for brass tubes, and a third „blind" hole. The
latter can easily be continued through the bung and used for other purposes if you wish. For this
model only a single fuel line is required (carburettor feed / filler tube), so the second hole should
be plugged with a length of brass rod (4618.15). Bend the feed tube to the shape shown in the
drawing. Ensure that the clunk weight is free to move inside the tank, i.e. that it always falls to
the bottom when the tank is turned over by hand. Fit the brass collar over the neck of the
fueltank, as it guarantees that the neck cannot split when the rubber bung is compressed.
Tighten the central retaining screw firmly once the fueltank is completely assembled. This action
compresses the rubber bung and causes it to swell laterally, sealing the throat of the tank
effectively.
Carefully remove any rough edges from the fueltank support surfaces at the side-frames, Order
No. 4448.34. Install the tank, and secure it by stretching rubber bands over it as shown; note
that the bung must face the rear. Make up the fuel line to the motor using fuel tubing and the
fuel filter T-piece; keep the connection to the carburettor as short as possible.
The tank is filled and drained by means of the fuel line running between the clunk pick-up and
the carburettor, and this is made easier by the presence of the fuel filter T-piece. For flying the
helicopter, push the sealing plug into the filler connection projecting from the side of the filter.
For filling or draining the tank, first cut off the fuel flow to the carburettor by engaging the hose
clip, then fill or empty the tank through the filler connection.
1.11 Installing the gyro platform
(bag UM-7)
Fix the gyro platform holders 4450.16 to the side frames using 2.2 x 9.5 mm self-tapping
screws. At a later stage the gyro platform 1291.12 can be fixed to the supports using four 2.2 x
6.5 mm self-tapping screws, but only after the servos have been installed.
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