Pitch Curve - Tactic TTX650 Instruction Manual

The idle-up function is used to optimize the throttle position for all flight envelopes including aerobatic flight. By
default the TTX650 assigns switch E as the idle-up control switch. This switch incorporates one "normal" and two
"up" functions within the three positions of the switch.
Position 1 = normal: Used for startup, take-off, landing, and typical flight profiles.
Position 2 = idle-up 1: Used for aerobatic flight
Position 3 = idle-up 2: Typically used as a secondary setup for aerobatic flight.
Make sure all mechanical linkages are connected exactly as specified in the helicopter's instruction manual. Make
sure the model's full throttle position can be achieved when the throttle stick is at maximum deflection. The
throttle trim must be able to minimize throttle control completely when the throttle limiter is at idle position.
ENTER this function. Up to six points can be placed on the throttle curve, as designated next to "Point" on the
graph. Points L (low) and H (high) are each limited to a fixed range on the curve. Points 1, 2, 3, and 4 can be set if
desired with respect to the position of the throttle stick.
As the throttle stick is advanced note the point where the vertical line (throttle position) intersects the diagonal
line (curve). The coordinates of this point are shown at the bottom. The "x" (horizontal) coordinate is on the left,
and the "y" (vertical) coordinate on the right.
To set points on the curve, start at the minimum throttle position which will be noted as point "L". A point for "L"
is not marked on the graph, but is the left-most end of the curve line. The vertical position of this point can be
adjusted by moving the cursor to the RATE percentage, pressing ENTER and then ↑+ or ↓- as desired. Press
ENTER when finished.
To set point 1 on the graph, advance the throttle stick until * shows next to "Point". Find the desired throttle stick
position and press ENTER. A + symbol will be placed on the curve to mark this point.
Pressing ↑+ or ↓- will adjust the vertical position of curve at this exact point. Adjust as desired.
Repeat these steps to set points 2, 3, and 4 on the graph as desired. A point for "H" is not marked on the graph,
but is the right-most end of the curve line. The vertical position of this point can be adjusted by moving the
cursor to the RATE percentage, pressing ENTER and then ↑+ or ↓- buttons. Press ENTER when finished.
To clear any point on the graph, place the cursor on the RATE percent, move the throttle stick until the graph's
vertical line intersects the point, press ENTER and then CLEAR.
A switch can be assigned to toggle between the linear curve (for starting the engine, etc.) and the user-defined
curve (for forward flight, stunts, etc.). Select the switch on the CTRL line. The switch set for flight phase control
can also control the throttle curve.
The exponential control of the user-defined throttle curve (but not the linear curve) can be active or inhibited.
This will soften or make the transition of the throttle curve smoother. Move the cursor next to the EXPO line and
toggle between "ACT" and "INH". Press ENTER when finished.
PITCH CURVE: The method for setting the pitch curve is the same as for the throttle curve as explained above, by
moving the throttle stick and using the same controls.
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