11
Tub sleeves sanded, ready to glue in.
Tub sleeves, doublers and booms in place. 21FE shown.
Fwd. sleeve and doubler detail. 21FE shown.
When the tub bottom has cured, lets move
on to boom tube alignment.
This is probably the most critical step in the
assembly, so take all the time needed to
get this right.
Remove the tub from the jig.
Grab the two brass boom tube sleeves, and
use 80 grit paper to rough the last ¼ inch or
so of each end.
Put the rear tube doublers in place and slip
a boom tube sleeve and carbon boom tube
through the tub and doublers.
Measure the carbon tube on each side of
the tub, and center it. Make some pencil
marks on the tube, on the outsides of the
tub so that you can quickly center the tube
later.
Do the same for the forward boom tube and
doublers.
The forward boom tube doublers line up
with the forward boom tube holes. They
only align correctly one way, so be sure that
the orientation is correct before you mix any
glue.
Weight the tub so that it is flat on the bench.
