Advertisement
Building Instructions JIMMY
Final assembly
Open the holes for the wing holders in the fuselage by cutting the covering away with a
sharp hobby knife, and insert the 4 mm dia. beech dowels. These will hold the elastic
bands that in turn will hold the wing in place.
If you have not already done so (see page 8), bend the landing gear legs from 2 mm
pianowire, and slide these into the holes in the fuselage. Fix the gear with the two ply
straps screwed down into the pine strips alongside the gear. Mount the wheels and fix
them with a wheel collar on both sides, clamped onto the wire. Alternatively, small, tight
fitting sections of control cable can be used, the outer ones glued on with a dab of
superglue.
The battery hatch has to be opened for each charge so add the 1.2 mm ply lip to the
forward edge in such a way that it slides under the permanent nose cover, see the
drawing. The hatch can be held in place with an extra small rubber band attached to the
wing dowels.
This finalises the build of the JIMMY, but before you can go flying something else needs
to be done, namely adjusting the........
Center of Gravity or Balance Point
For the stability of flight it is important the the plane is balanced properly. The balance
point shall be at the position as indicated on the drawing, which can be adjusted by
sliding the battery backward and forward. Temporarily mount the propellor and -adapter,
insert the battery upside down so the velcro does not "bite", balance the assembled
plane on your fingertips by resting the wing on them, slightly forward of the wing spars,
close to the fuselage. When the battery is at the correct position, the plane's bottom will
hang in a horizontal attitude. Turn the battery over and fix it in this exact position. Further
adjustments can be made after flight testing by an experienced model pilot, or following
instructions to be found on the internet (search for "CG dive testing"). Remove the
propellor.
The ESC remains loosely pushed in
place above the battery and under
the nose top cover. It will have to be
pulled back partly to allow the battery
to be removed for charging. Space is
limited, but it should be just enough
to close the hatch.
Connect the servos and the ESC to
the receiver, find a place for it and
immobilise it with a piece of foam,
and route and fix the antenna(e) as
per the manufacturers instructions.
Page
18
van
20
Advertisement
