R I V E T T / R O C K E T T
30
Shaft tube being aligned.
11/32 by 3-1/2 stuffing tube.
Bottom of hull taped around stuffing tube.
Bolt the engine in place, with the rod in the
collet.
Try to slip a piece of 9/32 brass tubing over
the rod, up to the collet.
If that fits without interference, slip a piece
of 5/16 brass tubing over that, if that slips
on, slide the 11/32 brass stuffing tube over
that. You should have to sand a little to get
the tubes to fit.
When you can slide the 11/32 tube over
the others without moving anything, its time
to glue the stuffing tube.
The stuffing tube is a piece of 11/32 brass
tubing about 3-1/2 inches long.
Rough up the outside of the tube with
coarse sandpaper.
Slip the tube onto the 5/16 tube, until it is
within ¼ inch of the collet.
Tape around the bottom of the tube, so that
no epoxy can seep out.
When happy with the tape job, flip the hull
upright, and either cut a hole in your
building board, or use pieces of ¾ thick
wood to space the hull off the bench, as
the stuffing tube is now sticking down.
Mix up about a 1/4 ounce of 30 minute
epoxy, and mix a little filler in, such as
micro balloons or silica.
Just thicken to about mustard consistency.
Apply this under, around, behind and on
top of the stuffing tube to hull joint.
Try to be neat, and put some on the engine
side of bulkhead 3.
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