Installing The Optional Aero-Tow Release (*); Compression Struts; Completing The Canopy - GRAUPNER Alpina5001 PRO Mode D'emploi

in the area of the hole. Now glue the tow hook support block into place centrally over the hole
using thickened epoxy. Use a self tapping screw, through the hole in the bottom of the
fuselage to secure the support block while the epoxy cures
Tip: for additional security, you may wish to finish the job by laminating the support
block to the fuselage bottom using 2-3 layers of suitably wetted 120g fibreglass
laminating cloth.
Once the support block has thoroughly cured, drill a Ø 2 mm pilot hole to accommodate the
supplied winch hook.
Catapult launch hook (*)
Some may wish to install a launch hook further forward in the nose for use with alternative
launch methods such as from a catapult. In this case follow the same procedure as above,
but instead select a position 200mm from the nose.

Installing the optional aero-tow release (*)

This is also a good time to install the aero-tow release (if required). There is a good selection
of purpose made model aero-tow release mechanisms available commercially for which
installation techniques vary, but the simplest form is described below:
Carefully mark out and cut a 10mm slot about 2mm wide transversally about 5cm from the
nose and with the lower third of the fuselage diameter. Using thickened epoxy, fix a length of
PVC Bowden tube along the inside of the fuselage such that it intersects the slot at 90
degrees. The slot should be positioned so as to allow at least 5-10mm of the PVC tube in
front of the slot.
Once the resin has cured, cut away the Bowden tube from inside the slot and insert a length
of steel wire inside the tube such that it engages both sides of the slot when closed and is
clear of the slot when open. Connect the free end of the steel wire to a suitable servo to
operate the aero-tow release. You will require a simple loop, best made from monofilament
nylon to link up to the towline.

Compression Struts

The two hardwood compression struts are necessary to help to protect the fuselage from
damage in the event of a hard landing. Carefully adjust the two hardwood pieces to fit the
inside width of the fuselage, one just forward of the leading edge incidence pins and the
second just aft of the trailing edge incidence pins. It is important that these struts fit snugly,
without distorting the shape of the fuselage in any way. They are bonded into place using
suitably thickened epoxy resin.

Completing the canopy.

The Carbon canopy is supplied ready made and requires only minimal finishing. Place the
canopy on the fuselage opening, carefully check the joint and adjust as necessary for a
perfect fit. Minimum gap and good overall appearance will be your just reward for a little extra
time and effort at this stage. Follow the steps below to install the canopy retainer, taking care
to check the fit at each stage.
Graupner GmbH & Co. KG, Henriettenstraße 94-96, 73230 Kirchheim
Fig 1. Aero-tow Release
Fig 2. Location of the two compression struts.
www.graupner.de * www.tangent-modelltechnik.com
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