In “blog one” we touched on the installation of servo’s in this model, so far the throttle & choke have been installed. Within the fuselage the rudder servos have to be mounted & also the receivers /batteries . & relevant voltage regulators, with any model we build here at Probuild we plan the installation prior to actual building. On this model the plan was to vacuum a Nomex plate to which we would mount the 3 rudder servos, 2 voltage regulators, 2 Li-Po batteries, 2 receivers, 2 remote receivers, & finally 1 JR multi box, the multi box is to match the 3 rudder servos to ensure the sub trim on the 3 servos is match, as well as the travel on all three servos is uniform. With this list of components in mind, we cut a cardboard template of the approximate size & trim it to fit within the fuselage in the required position. Once we have a correctly fitting card blank we lay all the hardware out & position everything to the approximate position. We mark out reference lines on the card along with the centre line & try & make a symmetrical installation. Provision for wires entering the board also have to be taken into account along with making the wiring neat & tidy, just because the installation is out of site does not mean the radio can just be thrown in. The entire installation be it radio or engine is the hearth of the model, if either fails it could mean the end of the model or more importantly could be a 3rd party injured or worse still, someone killed because the installation was not up to standard! Heavy I know, but it is realivent.

The construction of the Nomex plate is done by vacuuming two glass fibre skins one on each side of the Nomex core. The glass was 200g plain weave cloth, the resin RSL285 with 24 hour hardener & vacuumed on the engineers surface table, this is a cast iron table of approximately 3 tons which when constructed is very flat & straight. The use of this table is to produce a completely flat plate. I also put under one of the skins a name reason for the plaque of the person the model is being built for. Within the Nomex plate provision for the triple servo mounting points was routered out. A mixture of epoxy & micro ballons was mixed to seat the ply plate of the servos mounting s into the Nomex but at the same time ensuring that it did not protrude from the surface of the Nomex , therefore the glass skin will adhere to the play as well. Once the adhesive mounting the ply into the Nomex was cured then the two glass skins could be attached to the Nomex within the vacuum bag I had made up for the jog, minus 10lbs per square inch vacuum was pulled & the whole thing left for the 24 hours required to cure. Once removed from the bag the plate was trimmed to size & realivent holes & Velcro slots cut. Velcro is used for the fixture of components to the board where required. I have seen tie wraps used as well as rubbed bands but prefer the Velcro system. With all fixing points & holes drilled or milled out The plate was mounted into the fuselage. The area where the plate was to come in contact with the fuselage and where the adhesive was to be was roughed up with some clean 80grit paper, the area then whipped clean with acetone. The adhesive is the same 24 hour skinning epoxy which was used to manufacture the plate but mixed with micro ballons as a filling agent. The epoxy is mixed with the micro ballons until it has the viscosity of grease. It is applied to the plate filling the voids in between the skins where the hexagonal cells are part of the Nomex construction. When the fixing areas have sufficient adhesive applied the plate is positioned within the fuselage. The excess glue is removed but a radiuses fillet produced on the top & bottom of both side of the plate to increase the area of adhesive.