RANS S-20 RAVEN
TEXT MANUAL
09/01/2013
08-02
Thick & Thinned glue is referred to and is normally in the following approximate
ratios.
Thick = 3 parts glue : 1 part MEK
Thinned = 1 part glue : 3 parts MEK
Throughout this section, we will be referring to “sizing material”. Sizing material is
U-500 adhesive thinned to water like consistency. Keep a container of sizing
material handy and apply it to the fabric wherever a cut is to be made. Allow the
sizing material to dry before making the cut. This will keep the fabric from fraying
and aid in cutting straight.
Patches will have to be applied on top of the fabric as reinforcement or on top of
Lexan Reinforcement Rings for exits, Inspection Plates, or drainage holes. The
outline of the patches will still be visible after painting. If you want it to look good,
then here is how to do it. Use a straight edge or a round template and a soft
pencil to mark the outline of the patch on the fabric. Use sizing material and a
soft brush to size along the cut line. Let dry and cut the patch out using a pinking
sheers. Wherever a cut must be made inside the patch, size and than cut using a
razor blade.
NOTE: Most cuts inside Inspection Rings, Exits and drainage holes
should be done after painting.
To gain experience, cover a Tail Surface first.
IMPORTANT: However, cut 4 lengths of fabric 6” longer
than the Wings. This will assure enough material for the
Wings.
Most all of the covering techniques are used in the tail. The experience gained
will greatly enhance the rest of the job. There is enough fabric for at least one
mistake. So, if a tail feather is not right, try again. Work toward perfection and
neatness. Take your time; a good job is easy to live with. A bad job...you will
spend more time making excuses than it would have taken to do right!
