Building Instructions JIMMY
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JIMMY
BUILDING INSTRUCTIONS
Build the JIMMY, a radio controlled model aeroplane especially designed
for the first time builder or flyer.
The JIMMY is a model plane which is easy to be built by a first time builder, and can be
flown by a novice pilot. The design is based on a number of pre-cut parts in balsa wood or
poplar plywood.
To build the plane, you will need some tools and glue. Here is a summary:
1. A sharp hobby knife, such as a small sized, break-off blades type.
2. A sanding block, a wooden block with a piece of sanding paper stuck to it with double
sided sticky tape. Use grit size 150. Make a second block with 100 or 120 grit to trim
the edges of the plywood parts. This will wear it off a bit faster, so you can keep the
150 grit block fresh for the balsa parts.
3. Dressmaker’s pins to keep the parts in place during drying of the glue. Use only glass
headed pins, the ones with plastic heads tend to lose their head when a bit of force is
applied, ending up with an unpleasant hole in your finger. Special modelling pins are
also available. To assemble plywood parts it is best to use short pin board pins, which
have a stout grip.
4. Clothespins/pegs for the same purpose. You can use ordinary clothespins, but they
tend to leave traces on the soft balsa. Purpose made little clamps are better, look at
the pictures to get the idea.
5. Glue. PVA glue is the most suitable, since it will give you some time to adjust the parts
to their proper position, and surplus glue can easily be removed with a piece of wood,
or just use your fingers. PVA glue will clean off the skin without problems before it sets.
6. Building board, MDF, minimum thickness 12 mm when you can support it on a flat
surface, but thicker when standing on its own. Make sure it is flat and not warped.
The parts will be supplied while still fixed in the balsa or ply sheet material from which they
are cut, and your first task is to release them by cutting the bridges with a sharp knife.
Sand off the remainder carefully, beware of changing the shape of the part by too much
sanding.
Dry-fit each part before applying glue to ensure a proper fit, and adjust where necessary.
Please note: In the following instructions right hand and left hand are referred to as seen in
the flying direction, i.e. looking from the rear to the front.
