Rudder Control Horn; Motor Installation - Electric Glider (*); Servo Mounting Tray - GRAUPNER Alpina5001 PRO Mode D'emploi

Rudder control horn

Carefully mark out the position of the rudder control horn to align with the shroud in the rear
of the fuselage and the rudder control linkage. Try to locate the horn as close as possible to
the pivot line, and at exactly 90 degrees to the rudder hinge line. Take care to avoid any
restriction caused by the rudder horn touching the shroud in the fuselage.
Now drill a 4 mm hole at the point where the rudder horn is to be installed. The hole should
be as deep as possible but take care not to pierce the skin on the other side of the rudder.
Undermine the hole using a sharp tool so as to increase area available to the adhesive and
bond the rudder horn into place using suitably thickened epoxy.
Note: Customers building the ARC version may wish to cover the rudder before gluing the
eye-bolt in place (see finishing)
Motor installation – Electric Glider (*)
Cut off the nose following the line indicated on the moulding (only required if adapting a
glider for use with an electric motor) and sand lightly. An opening of 58mm diameter is ideal
to accommodate the recommended motor. Some adjustment may be required to
accommodate your choice of drive system.
Assemble the motor onto the supplied motor-mount and test fit in the nose-cone – without
any adhesive at this stage. Remove the motor, and thoroughly roughen up the general area
where the motor mount is to be bonded into the fuselage using 80 grit abrasive paper. Now
re-insert the motor on its mount and assemble your chosen prop driver and spinner and align
the whole assembly such that the spinner matches perfectly with the profile of the nose. With
everything in place, carefully mark the position of the motor mount inside the fuselage nose –
allowing for 3-4° down-thrust and 1-1,5° right-thrust.
Remove and disassemble the drive system. Re-position the motor mount precisely on the
marks and tack in place using an instant adhesive. Check for proper alignment by re-
installing the drive system and adjust as necessary. Once properly aligned and secure, fix
the motor mount in place using a generous fillet of thickened slow-setting epoxy and leave to
cure thoroughly.
Reassemble the drive system, leaving a gap of about 1mm between the spinner and the
fuselage nose.
Note: Check that the screws used to secure the motor to the motor mount are not too long
as they may otherwise foul the internal motor mechanism. You may find it necessary to
countersink the mounting screws slightly, to achieve clearance with the propeller
yoke/spinner assembly.
As regards cooling, with short bursts of full power and long periods of gliding it ought not to
be necessary to provide additional air-intakes in the fuselage nose, particularly in the event
that one of the open turbo-style prop spinners are used. If however you are likely to use long
bursts at full power and are in any way concerned about overheating of any of the
components of drive system then please do make provision for additional air intake. Always
remember however to allow sufficient openings via which the air can escape. The fuselage
opening at the tail ought to sufficient and should on no account be closed off.

Servo mounting tray

Graupner GmbH & Co. KG, Henriettenstraße 94-96, 73230 Kirchheim
31
www.graupner.de * www.tangent-modelltechnik.com