Carf-Models Ultra Flash, Instruction Manual

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hole of the servo arm, and an M3 ball-link secured in
between the dual phenolic aileron horns with an M3 x 16
bolt and locknut. Trial fit the completed servo plate and
linkages.
Adjust the size of the small slot that we have already
milled in the false trailing edge of the wing to suit the flap
linkage if needed (see photo P17). Make sure that the flap
servos are exactly centered with your R/C, and that the
lengths of the linkages for the flaps are absolutely identical,
so that travels will be the same. See ‘Setting-Up’ section at
end of manual for throws.
Main Landing Gear
The C-ARF landing gear set is specially manufactured for
the Flash, integrating the very high quality engineering of
the Behotec C-36/2 (Germany) retract units and oleo legs,
with the superb reliability of the well-known Intairco
(Australia) wheels and brakes, and high quality acces-
sories and connectors. The whole assembly is designed to
handle grass runways, and the 2 prototypes were tested
extensively from short grass strips. It is incredibly strong,
but all spare parts are available if necessary.
The main LG mounts are jig-assembled in the wing moulds
from aircraft-grade plywood, and are fully integrated into the
wing spar structure, locked together with tabs and slots -
bringing you the highest strength with the lowest weight.
Insert the steel connector pins into the trunion blocks of the
retracts, mark the position of the ‘flats’ for the two M4 set-
screws and grind with a cutting disc as usual. Secure the
set-screws with a drop of Loctite or equivalant. Slide the
oleo legs onto the pins, and temporarily secure with
one of
the M5 set-screws. Fit the brake hubs, wheels and axles
onto the legs temporarily also.
Install the retract units onto the mounting plates in the
wing, with the wheels exactly central in the moulded wheel
wells. Drill Ø4mm through one of the mounting holes in the
26
(above) Completed aileron link-
age with M3 lock-nut, and Tygon
tube over clevise for safety.
(below) Detailed view of flap link-
age and clevise connection.
(above) You must grind small ‘flat’s
on all the connecting pins and
axles when assembling the
Landing Gear. Use a drop of loc-
tite on all set-screws for safety
(below) Retract installed on the
wing mount. Trim around cutout
in wing as needed, and keep
aligned with wheel-well.