Krick Modelltechnik Minimoa Bauanleitung Seite 11

Rudder Construction
Cut rudder spar 96 to the shape shown between fuselage side- and top-view and cement ribs 97 through 101 against it.
Cement doublers 103 onto trailing edge 102, let dry, taper it towards its rear edge and cement it against the rib ends.
Then fit and cement bottom edge 104 between spar and trailing edge.
When thoroughly dry, add nose ribs 105 through 107 together with leading edge 108. Then add nose ribs 109, rudder
tips 110, spar doublers 111 and let thoroughly dry once more. Sand to shape, add nose plankings 112, bottom plank-
ings 113 and gussets 114 and let dry again. Sand all over and eventually drill a 2 mm dia. hole for rudder horn 115,
which won't be cemented in position until final assembly.
Tailplane Construction
Cut stab and elevator spars 116 and 132 to the shape shown on the plan. Pin spar 116 with its rear face onto the
building board and cement ribs 117 and 118 as well as centre plate 119 in position. Let dry, add leading edges 120, let
dry once more and then add ribs 121 through 124, tips 125 and centre fillets 126. Let dry thoroughly, cement nose
plankings 127 in position, let dry again and then sand all over.
Fit aligning strip 129 to underside of stab, drill 3,9 mm dia. holes through stab and aligning strip and then assemble
them dry with bush 128. Fix assembly to fin with bolt 131, align carefully, remove again and cement parts together from
outside with CA-cement. Eventually add gussets 130 and then final sand stab all over.
Assemble elevator from parts 132 through 147 in the same manner, let it dry thoroughly and then sand it all over. Cut
slots for hinges 225 through stab and elevator spars and temporarily hinge elevator to stab.
Preparations for Wing Construction
To avoid warps and other b7ilding problems, first set up a 320 mm wide jig as shown in front-view at the bottom
left-hand corner of sheet 2 of the plan. Then make a 880 mm long jig strip, tapered from 6xlO mm to lxlO mm, to pack
up the aileron trailing edge to achieve the required wash-out of the outer wing panels. Tape the plan to the jig and pin
the jig strip in position.
Drill 3,5 mm dia. holes for aileron pushrod sleeves through ribs 151 through 171 and 214 and 6 mm dia. holes for wing
tongue sleeves through ribs 151 through 155 and 214.
Soak dihedral braces 165 well in warm water, clamp them together with three 5x5 mm packing strips between the jaws
of a vice to achieve the required bend, and let them dry thoroughly.
Cement spars 148 and 195 together in pairs. Cement one right- and one lefthanded pair from ribs 165 and 166. Cement
one right and one left aileron root trailing edge from parts 204 through 206 as shown in section P-P and eventually ce-
ment one aileron tip each from parts 207 and 208 as shown in section T-T.
Wing Construction
Cut to size from sheets 212 and 213 the following bottom plankings: inner nose planking, outer nose planking (which
must be spliced from two pieces as shown on plan), root planking between main and compression spar and break
plankings between ribs 164 and 167. Butt cement pieces together, pin in position and mark rib positions with a soft
pencil where necessary.
Cement and pin bottom spars 148, 149, 150 and 218a onto plankings, then cement ribs 151 through 164 and 167
through 186 in, position. Use CA- or contact cement between rib noses and nose plankings for immediate joints. Fit and
cement dihedral braces 165a, 201 and 202, slide false spars 219 in position, pack them up with scrap and cement them
to the ribs. Cut and fit dihedral break ribs 165/166 and cement in position.
Cut fit and cement inner spar webs 190 through 193, outer spar webs 199 and rear spar webs 189 onto spars and
against the ribs. Let dry thoroughly and then sand down their upper edges where necessary with a sanding block of
spar width moved spanwise.
Now add leading edges 196 and 203, spliced as shown on plan, main top spars 195 and 200, rear top spar 194, top
compression spar 209 and top false spars 198. In case spar notches are too. deep, pack spars up with wood shavings
until they fit flush with upper rib edges.
Fit and cement trailing edge 188 to rib ends and join it to the rear spar with fillets 211. Then fit and cement trailing
edges 204/5/6 and 197 in position and finish off by adding the end of rib 166 and tips 207/8.
Cut aileron, diagonals slightly over length from strips 210, fit them to length, taper their upper edges to fit flush with
false spar and trailing edge and cement in position. Add rib 187 to inner face of tip.
Fit wing tongue sleeves 215 and 216 in position, let them protrude 3 mm and carefully epoxy them to the ribs.
Slide aileron pushrod sleeves 220 through ribs, connect them with coupling 220a, taper the outer end flush with the
wing bottom, cement exit filling to rib 178 and spars and then epoxy pushrod sleeve to all ribs.
Sand over rib upper edges, top spars and leading edges with your longest and wides sanding block, then cut, fit and
add top nose plankings with contact cement and all' other plankings with any slow drying cement.
Let dry thoroughly. Remove wing from jig and carefully sand all over. Cement inner leading edge 221 in position, bevel
outer end for the splice and then add outer leading edge 222. Epoxy root rib 214 in position and cut, fit and cement the
many small gussets 223 with balsa cement or thick, gap filling CA-cement. Let dry thoroughly, roughly carve leading
edges to shape, sand wing all over once more and then replace it to the jig.
Cut away ribs 167 through 186 between false spars 198 and 219, sand the cuts flush with the spars, using a sufficiently
flat sanding block. Then cement aileron spar 224 in front of aileron, let dry and remove from the jig. Cement another
spar 224 to the wing, let dry and remove wing from the jig as well.
Sand outer faces of aileron spars to blunt wedge shape as shown in sections P-P, R-R, S-S and T-T, cut slots for
hinges 225 and dry assemble aileron to wing. Drill hole for aileron horn 225a, dry insert horn, assemble pushrod from
PVC cable 226 and clevis 228 with CA-cement after drilling up the clevis bore to 2 mm dia. if necessary, slide pushrod
Seite 11 Klaus Krick Modelltechnik Knittlingen