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Assembling the DIAMANT
Please don't start work on the model until you have read through the instructions and have
a clear understanding of the purpose of the various components and the individual stages
of construction. If you are not satisfied with the quality of any part, take it back to your
model shop for replacement before modifying it in any way.
The fuselage (glider version)
Sand all joint areas inside the fuselage thoroughly until they have a matt appearance (see
the note following the adhesives table).
The first step is to decide whether you wish to install a retractable wheel or not; you must
do this before you start construction. The instructions cover the installation of the
retractable wheel; this also simplifies the installation of the rudder servo, as a separate
plywood servo plate is not required.
The corner points of the wheel doors are marked on the underside of the fuselage; draw
pencil lines to connect the marked points. The next step is to glue the aluminium tubes in
place for the wheel doors: drill four 1 mm Ø holes about 3 mm inside the marked corner
points, exactly on the front and rear lines. Now fit short pieces of 1 mm Ø steel rod
through the holes to act as end-stops when gluing the aluminium tubes in place.
The two tubes can now be glued in the fuselage, projecting about 5 mm beyond the rear
holes in the fuselage. Tack the tubes in place with cyano, then apply a generous fillet of
EPOXY RESIN round them to obtain a strong joint.
When the glue has set hard, cut out the wheel doors from the fuselage using a razor saw
(e.g. Order No. 860 or 860.1), cutting exactly along the marked lines.
Glue two washers to the inside of the fuselage to provide a positive stop for the wheel
doors.
The wheel doors close automatically when the wheel is retracted, and a torsion spring is
glued to each door to provide this action, as shown in the photo.
Both ends of the torsion springs are held in plastic tubes. The torsion springs are not
glued in the plastic tubes; this allows them to be replaced if necessary.
The two retract unit formers can now be glued in the fuselage. Note that the position of the
retract unit relative to the wheel doors is important; but you must also take the wing joiner
into account, and ensure that the retracted wheel does not foul it. Check this by placing
the retract unit formers in the fuselage together with the retract unit, and extend the wheel.
Fit a piece of hardwood dowel through the holes in the fuselage for the wing retainer, and
slip the wing joiner through the appropriate holes in the fuselage. The retract unit yoke
should not rest against the fuselage, and the wheel must not foul the hardwood dowel or
the wing joiner when retracted.
There should be about 2 mm clearance between the wheel and the dowel / wing joiner.
When you are satisfied, tack the two retract unit formers in place with a few drops of
cyano. Carefully remove the retract unit, and apply a generous fillet of EPOXY RESIN
round the formers to reinforce the joints.
The next stage is to mount the rudder and retract servos on the sides of the retract unit
(see photos). Assemble the retract system pushrod as shown in the photo, and connect
the retract unit to the servo.
GRAUPNER GmbH & Co. KG
We reserve the right to introduce modifications. No liability for printing errors.
11.1 V / 4.8 Ah
7660.3 (2 required)
D-73230 KIRCHHEIM-TECK
9
GERMANY
05/2006
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