S U P E R S P O R T
26
Shaft tube
Set up for surface drive, this will exit the rear of the
boat, through the transom.
The Super Sport uses an offset driveline.
This counter acts prop walk, and allows you to run
with the rudder straight (no left trim). This makes the
boat faster and more efficient.
We wrestled with this, as it complicates an
otherwise simple build.
In the end, we feel that the performance
improvement is worth the extra effort, and we think
that you will agree.
The shaft tube is a piece of 5/16 brass tube that
gets 2 gentle bends, in 2 planes.
The shaft tube will have to be formed in place.
We will anneal the bend areas, and they will be easy
to form by hand.
Be sure to make the bends very gentle, otherwise
you will be breaking flex cables…
Cut your 5/16 OD brass tube to 13-1/2 inches.
Mark 1-1/4 inches from one end, and 4 inches from
the other.
Use your torch to anneal the brass between your
marks.
Just heat the brass until it changes color. No more
than a very light orange. Any hotter and it will melt.
Allow to cool.
Use steel wool to clean the tubing.
Drill the hole thru the transom with a 5/16 bit.
Make sure that the holes in the shaft tube brace and
bulkhead 4 are open.
Starting at your 1-1/4 mark, make a short bend (20-
30 degrees in the tube. This should be a big radius.
Use your thumbs and bend in several places to
make a large radius bend.
