4
Ballast: It is best to order the Strega ballast set together with the kit via https://www.rcrcm.com. For
the fixed mounted nose ballast I suggest to use lead shots, widely available in RC stores. Get at least
150g.
Wiring Harness: Probably available at RCRCM in future. Even so, mine is self soldered. To do this, get
about 4m three pole 0,34 qmm servo cable, 2 green multiplex plugs for wing connection and about
10 connector plugs for the RC system of your choice.
Miscellaneous: You will need a good toolset, soldering equipment, UHU Endfest epoxy (which will
harden to “bullet proof quality” over night), 5 min Epoxy, super glue (cyan acrylate based, extra fast
hardening glue), shrinking tubes of various sizes, e.t.c. e.t.c…. in other words a normally equipped RC
assembly work area.
A few added and some replaced parts
You can assemble Strega nicely using only materials mentioned above here. For personal preference
and for best performance however, I added a few things and I choose to replace some original parts.
Ballast tube mount: I desigend a rib for the fuselage and cut it from plywood, see figure 18.
Clevises (Fork heads): The original clevises were substituted by conventional ones (widely available
in RC stores) for better performance and zero tolerance assembly.
Carbon rods: The ones seen in figure 17 (upper left), were used instead of the supplied metal
threaded rods. Again carbon rods are widely available in most RC shops, probably stiffer but sure
lighter and better for tolerance free fork head mounting, than the original metal rods.
Servo tray: To gain a little space in the fuselage I cut a newly designed servo tray for parallel servo
mounting from 3mm plywood and reinforced it on top and bottom with one layer glass fiber
laminate, see figure 16.
Preparations and assembly of parts:
Before you start, spread a fleece blanket over your work bench and apply masking tape onto the
critical parts of your plane, to protect the delicate high gloss surface.
Sanding the sealing lips
The sealing lips of all control surfaces need to be bevelled to ensure that they won’t “catch wing”.
This is most important for the flaperons(flaps) due to their great deflection level during use as
airbrakes. See figure 2.
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