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Once the filler has set you can lift up the door and remove the
perfectly profiled fillet piece. The cling film will have stopped the filler
sticking to the leg or the door. Trim all the excess filler from around
the edges and bond the fillet in place on the door skin with epoxy.
You now have a gear door that will only fit in one position - the
perfect position.
There are varous ways of securing the door to the strut including
gluing it on permanently. For this example we have made it
removable. Cut a strip of aluminium approx 6mm wide and long
Fig. 62
enough to go around the strut and on to the door. Drill 2 x Ø1.6mm holes into the inner door skin and
tap out to M2. Stengthen with a drop of cyano. Secure the door to the leg with the aluminium strap and
2 x M2 screws. Add an additional screw to the lug at the front of the leg lower down with a brass spacer
as shown in figure 63 / 64.
Small gear door
The small gear door has been fitted for you at the factory. However
you must make up a linkage between this door and the strut. Begin
by drilling and tapping a hole to M2 in the centre of the front face of
the retract trunion. This will be your first mounting point. Using 2 x
M2 ball links and a length of M2 threaded rod supplied make up a
linkage as shown in figure 61 the distance between centres on this
example is 27mm. You may need to trim the ends of the ball links
to acheive the correct length. From a scrap piece of epoxy board or ply make up a small lug to provide
the fixing point on the gear door. Attach this lug to the linkage with an M2 screw and nut and screw the
other end of the linkage to the hole you made in the trunion. The linkage needs to be set off the trunion
by approx 6mm to provide clearance for movement
Fig. 63
23
Skygate Collection
BAE Hawk Mk 66
Fig. 61
Fig. 64
Fig. 65
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