Page 21 - MFW June 2024
P. 21

Some general build notes;
         PVA  white  glue  was  used  for  the  majority  of  the
         airframe build, with thin CA or 5 minute epoxy for a
         few bits where different materials were used, and/or I
         was pressed for time.
         The  0.4mm  ply  used  for  the  doublers  proved  too   Second wing panel glued up, then both panels sanded to final shape.
                                                                                                       After  applying  3”
         expensive to source so it was replaced with 0.8mm                                             wing bandage and
         ply I already had; the hardwood engine bearers were                                           PVA to top surface
                                                                                                       of  centre  joint,
         also a little oversize, resulting in a little more weight in                                  folding  bandage
         the airframe.                                                                                 underneath  LE  &
         I also opted to cover the wings with doped tissue, as                                         T E,  0.8mm  ply
                                                                                                       r e i n f o r c e m e n t
         this  finish  toughens  the  all  wood  surfaces                                               added  to  upper  &
         considerably without adding too much weight.                                                  lower  surfaces  of
         The originally intended CA hinges turned out to be                                            LE / TE to prevent
                                                                                                       r u b b e r   b a n d s
         too stiff, so were replaced with kevlar thread sewn                                            cutting into softer
         hinges,  which  provided  much  improved  free                                                wing  sheeting.
                                                                                                       T h e s e   a l s o
         movement of control surfaces.                                                                 strengthen  wing
                                                                                                       joint.
    23rd January 2024:
    Plan file sourced online and printed full size at local copy
    shop




    ‘Kit’ made up of wing/tail
    parts
                                                              Initial fuselage pieces prepared, spruce 1/8” x 3/8” longerons, 1/8” sides
    After  pre-shaping  the                                   and 1/2” x 3/8” hardwood engine bearers.
    leading edge sheet with a
    razor  plane  and  sanding                                                                   After  gluing  sides  to
    block,  ribs  pinned  to                                                                     longerons, bearers glued
    board  and  L E  sheet                                                                       to  longerons  as  well  as
    glued.                                                                                       s p r u c e   w i n g   m o u n t
                                                                                                 reinforcement.

                                                                                                 Formers  made  up  using
                                                                                                 scrap  1/8”  lite-ply.  Also
                                                                                                 extra former 1a made up
                                                                                                 f r o m   1 / 8 ”   b a l s a   t o
                                                                                                 partition off fuel bay.




                                               Rear wing sheet
                                               glued.



                                                                                                         Formers  glued  to
                                                                                                         one side, ensuring
                                                                                                         squareness.
                                               Tail  plane  1/8”
                                               s h e e t   p a r t s
                                               taped and glued
                                               together.
                                                              25th January 2024


    24th January 2024
    S e c o n d   w i n g
    panel  glued  up,
    then  both  panels
    sanded  to  final
    shape.
                                                              Second side glued and clamped, again checking for squareness











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