GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
No liability for printing errors. We reserve the right to introduce modifications.
10/2006
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shown in the photo. The linkage hole for the throttle pushrod must be bored out to 2 mm Ø to
accommodate the swivel pushrod connector.
M2.5 clevises are used to connect the pushrods to the servo output arms; solder them to the plain end of
the pushrods.
The throttle pushrod is fitted through the swivel connector and clamped in place by tightening the
grubscrew firmly.
Check that the pushrods to the separate elevators are both exactly at right-angles to the servo output
arms.
Assembling and installing the fueltank
Cut a piece of silicone fuel tubing and push it onto the fueltank clunk weight. Push the free end of the fuel
tubing onto one of the tubes in the fueltank stopper, and check that the clunk will be able to move freely
inside the tank
without
binding or jamming when the stopper is in place. Use a heat-gun or a match to
heat the projecting plastic tubes slightly; this will soften them, so that they can be curved to the shape
shown in the illustration. Check that one pipe points down (filler line) and one up (vent line; this is the
overflow when you are filling the tank). Extend these two tubes with silicone fuel tubing so that they reach
the top and bottom of the tank. This arrangement ensures that the tank can be filled completely when
refueling, and can also be drained completely at the end of the flight. Push the stopper into the tank and
tighten the cross-point clamping screw. Ensure that the screw is tight enough to seal the fueltank
completely. You can check this by holding the tank under water: blow into the tubes and watch carefully: if
bubbles rise, there is a leak which must be sealed.
Cut three pieces of silicone fuel tubing and push them onto the tubes where they exit the fueltank.
Mark the fuel lines using a felt-tip pen or coloured tape to indicate which is the fuel feed, the
overflow and the filler.
Stretch one or more rubber bands behind the fueltank to prevent it slipping backwards in flight.
The next step is to drill holes in the nose bulkhead to suit the motor you intend to install (see photo)
--
55 mm for the FS 90
60 mm for the FS 120
Motor centreline
Dimensions to suit different motor types
--
Drill holes at the marked points in the nose bulkhead to accept the captive nuts.
Screw the two-piece motor mount to the motor; the mounting lugs should end flush with the front end of
the mounts.
Connect the throttle pushrod to the throttle arm on the carburettor.
Slip the throttle pushrod into the plastic guide tube and through the transverse hole in the swivel pushrod
connector mounted on the output arm of the throttle servo. Set the throttle servo and the carburettor to
half-travel, then tighten the grubscrew in the connector to clamp the pushrod in place. Install the silencer
as shown in the photo.
The motor cowl can now be trimmed to fit: you will need to cut and file out the openings for the cylinder
head, needle valve etc.
The cowl is fixed to the fuselage using four screws.
