| Building the inner fuselage sides is another
task that is not very difficult. It is often simply a matter of
measuring carefully. Should these pieces not be attached identically
to each fuselage, then then the formers will not be square
to the centerline when the fuselage sides are aligned.
- The forward fuselage doubler is cut from 1/64" plywood.
The wing saddle area on the doubler is left oversize and will
be sanded to final shape after the doubler is glued to the fuselage
side. It is a good idea to use epoxy glue as this will minimize
any warping which may take place.
- After the doubler is positioned, you can use a piece of waxed
paper over it and a weight can be placed over it until the glue
is fully dry.
- Once the wing saddle area has been shaped, former positions
can be transferred to the inside of the doubler.
- A straight-edge should be used to align the longerons inside
the fuselage. This will help with alignment later and minimize
any additional sanding
- As mentioned in the article on laying
out the fuselage, vertical supports are used to prevent
the fuselage sides from warping.
- After gluing the longerons in place they should be weighted
down and allowed to dry.
- The fuselage sides should then be taped back together and
block sanded to an exact match. If you have taken careful measurement
and worked accurately during assembly, there should be a minimum
of sanding needed.
- The fuselage is then jigged up on the board so that the bevel
can be marked at the tail post to bring the fuselage sides together.
The first step in this process is to determine how thick the
fuselage should be at the tail and mark half that measurement
on each fuselage side from the outside.
- The fuselage side is then trimmed to the line shown. The line
is drawn on one side only. The sides should then be laid next
to each other and the line is extended across the inside. Both
sides are then sanded up to the line.
Next Article: Preparing
the formers
|
Model Airplanes by Category
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Model Airplane Articles
» Introduction
to Building
» Laying out the Fuselage
» Building inner fuselage
» Preparing the formers
» Jigging and Dry Fitting
» Building it Straight
» Front End
» Installing onboard gear
» Learning to Fly
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