1.Tacking 1/4 square Bass
wood (hardwood) longerons to plan
Note Plan has see thru plastic sheet covering it.
glue in place with CA using activator
Verticals Glued In Place
2. Mark on sides of longerons position of front
2 verticals
This is to show where they are after adding 1/8 lite ply sides
Lite ply side
Spray activator on lite ply where it will touch longerons/verticals
Fold excess plastic sheet over the lite ply cover
Push dowels thru to locate in holes in lite ply sheet underneath
Mark location of verticals top & bottom from previous marks on longerons
also mark where the front of the longerons end on the lite ply
4. Tack into place with pins
Spray activator where longeron goes
6. Apply scrap 'packing' pieces of balsa under
sheet to support top longeron
tack with pins
Spray activator & glue as to marked lines of curve & front of longeron.
Repeat as with upper longeron applying packing & pin.
As before cut verticals & glue, same for diagonals matching to lower side.
7. Topside of Fuselage
On the plan which shows only half the topside use a compass to measure
each each cross member from the inside to the middle line of the section
Join lines with ruler for full width of topside of fuse
The blue is from painting our corsair and nothing to do with the pup!
8. Sand the TOP side of the ply reinforcing plate
on the sides flush. The bottom side has to be left with a recess. The
top of the fuse is built upside down on top of the plan.i.e. upside
down with bottom (recess) uppermost.
Tack the side in place on the plan (with plastic sheet on top of plan)
Trim the firewall corners to size to fit longerons. Note
the plan can be quite a bit out due to shrinkage of the plan. Where different
use the wood size NOT the plan size. Ours was about 2mm difference plan
to firewall size.
2mm difference to plan - use wood size!
Similarly trim the formers (bulkheads) corners to fit
longerons and place other side in position. Makesure square and tack.
9. Trim tail former to shape and once all correct
tack side to follow our marks on the plan. CA Glue tail former into
position and final tack side into position
Cut to size and CA glue cross members top & bottom and re-inforcing
gussets. We reinforced all corners
CA glue other formers in position. We did not epoxy the firewall
at this stage as it requires adaption of the engine mounts to incorporate
the reduction gear.
10. Trim the front undercarriage
block to length. We found it vague how these were incorporated.
We marked the width of the block on the front longerons
and cut to allow the front undercarriage block to slide in, (wides side
of the recess to the front) 
We glued a 1/4" balsa fillet to the rear of the front
undercarriage block.
After marking the width of the block we cut out the front
of the longerons
We marked the depth of the 1/8 ply flooring on the undercarriage
block
Marked the balsa fillet to cut out and allow for end of
longeron
Front undercarriage block and fillet glued in place with
thin CA
Similarly we marked and cut out for the rear block (wides side of the recess towards the rear)
Glued with thin CA rear undercarriage block (wide side of groove to rear)
Cut to size and glued with thin CA a 1/4 square balsa fillet similar to
front
We then cut and trimmed the 1/8 ply floor
Spread thick CA on the area it touched between the 2 undercarriage
blocks. Sprayed actuator on the 1/8 ply floor before fitting in place
then sanded smooth.
. The gap between the rear undercarriage block and the next cross member towards the rear will be an inspection hatch for servos. The ply was made ready to fit and then put to one side.
11. Located trimmed as necessary
tail piece
and glued flush to longerons using h thin CA.
Unpinned fuselage and turned over.
Positioned and glued firewall with 5minute epoxy.
Later thought is required on engine installation for positioning of 3/4 x 1/4 x 8'1/4 hardwood engine mount blocks to locate with engine fixing points.
12. Having unpinned the fuselage and turned right way up, the rearmost cabane fixing points is reinforced with a 'BHD 5'.
We decided to add 1/16 balsa box section on each slot, both too make
stronger and too hold the epoxy when inserting and glueing cabane struts
later. Measured width of cabane, marking distance on fuse from outside
of former.
Completed box section.
BHD 5 with added boxsection both ends CA glued in place
CA Glued in place further 1/16 balsa to enclose slot each side.
CA glued 1/16 balsa top cover
Cabanes placed in slots (NOT glued) for illustration.
13. Trimmed and CA glued on top tail section
We made and reinforced the circular former , reinforced for engine mounting - See Engine Installation
Drilling Hole For Tail Skid
