12
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.
