14
This is what makes a JAE a JAE… Sponsons are similar.
Engine rails glued in touching the aft doublers.
Engine bay with lower tri stock in place.
Glue the forward bottom in place with
epoxy. Be sure to sand the angle into the
aft sheet so that it matches the tub sides.
The forward bottom sheet should cover the
bevel on the aft sheeting and be left square.
Do not sand the rear of the forward
sheeting; it needs to have a sharp edge for
the water to shear off.
See drawing.
Using epoxy, glue the two maple engine
rails in place, touching the aft boom tube
doubler. Allow to cure.
Fit and glue the ¼ balsa tri stock inside the
tub bottom.
Cut the ¼ balsa tri stock as follows:
(2) 10 inches
(4) 9 inches
(2) 5 inches
(2) 4-1/4
Cut the longest pieces first. See cutting
guide in back of this manual.
These are slightly long. Trim for an exact fit
in the radio box and engine area.
Use the piece of 5/16x4 balsa tri stock to
reinforce the transom on each side, inside
the tub.
Install your engine on its mounts, then set
the engine and mount in place on the
engine rails. The glow plug should be about
3-1/2 inches forward of the bulkhead, but
this in not at all critical.
