Flight Control Setup
☐
We recommend flying your
RingRat
tm
250
on
52 ft. lines using the Sig Control Line Kit
[SIGSH454] and Sig Control Handle
[SIGSH544], following manufacturers
directions on the package.
☐
Inspect wing for any warps that may have
worked their way in when covering or while
the model was in storage, and remove prior to
flight.
DO NOT ATTEMPT FLIGHT IF WING
IS WARPED.
Lack of aileron control on this
model will make contending with a warped
wing very difficult.
FIX THE WARP.
☐
Center the elevator, then adjust EZ Connector
so bellcrank is in neutral position. Position
the pushrod on the elevator control horn in
the hole furthest out from the elevator. The
first flights of the
RingRat
tm
250
should be
made with minimum elevator throw until the
pilot is comfortable with the performance of
the aircraft.
☐
Weight and Balance -
The Center of Gravity
should be located between 1-1/2 in. and 2-1/2
in. from the leading edge (basically from the
rear of the leading edge sheeting to the screw
on the bellcrank). First flights should be
made with the C.G. at the 1-1/2 in. mark. The
battery and equipment may be located within
the wing and/or outboard on the nose as
needed to achieve proper balance. Work
the C.G. back and increase the sensitivity of
the elevator in small increments over time, as
you gain experience.
☐
Stunt Flying -
The
RingRat
tm
250
is an
excellent Sport Stunt Trainer. With the proper
motor/prop combination, maneuvers are
smooth and the model stays out firmly on the
lines, with no tendency to “turn in” during
overhead maneuvers. Wing-overs, Loops,
Figure 8’s, and inverted flight are well within
reach of the novice pilot.
☐
Stunt flying should not be attempted until the
pilot is very comfortable with the aircraft, and
has worked up to a fairly sensitive control
setup. The C.G. should be located farther aft,
closer to 25% of the wing chord (2-1/2 in.
from the leading edge) and the elevator throw
should be at least +/- 30 degrees. Have an
experienced pilot guide you through
b e g i n n i n g m a n e u v e r s u n t i l y o u a r e
competent, before attempting stunt flying on
your own.
RingRat 250 © 2010 Stevens AeroModel all rights reserved.
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