Throttle Cut; Throttle Hold; Throttle Curve - Tactic TTX650 Instruction Manual

Setting of the SERVO SET, DUAL-RATES, EXPONENTIAL, RF OUTPUT, and TIMER functions is the same as
described for airplanes on pages xx - xx. However, if using a helicopter which has CCPM mixing, read the SWASH
TYPE section on the previous page before adjusting the reversing and travel limits settings.
THROTTLE CUT: Allows the throttle channel's output to be quickly moved to a user-defined position by flipping
a switch. This is to reduce engine / motor power for safety reasons and/or auto-rotations. Default setting is -
100% (idle).
When setting up the model mechanically, make sure the carburetor is at full-open when the throttle stick is at full
position. Use the trim to adjust the engine idle position. Move the throttle stick to idle position and turn the
assigned throttle hold switch on and off repeatedly while changing the offset value until the servo stops moving.
Select a switch to control the throttle cut function on the CTRL line. Press ESC.
Move the cursor next to TRIG but do not press ENTER. Move the throttle stick to the desired position that will
trigger the throttle channel to move to the cutoff position. The graph will move accordingly as will the percent
shown on the THRO line at bottom. Press ENTER. The arrow on the left will now move and mark this selected
trigger position.
Move the cursor to the CUT percentage, press ENTER and adjust this cutoff value by pressing ↑+ and ↓- to the
desired position for the throttle channel's output to move to when the throttle cut function is activated. This
position will be marked by the arrow on the right. Press ENTER to confirm this mark.
When the throttle cut switch is in the ON position and the throttle stick is positioned above the trigger mark,
reducing the throttle stick to the trigger mark will automatically drop the throttle channel to the throttle cutoff
mark. The throttle channel will remain in this position. To regain full control of the throttle channel, move the
control switch to the OFF position.
THROTTLE HOLD: Throttle hold allows full use of collective pitch while setting the throttle at a user pre-
determined position. this function is often used for autorotation. The pilot can then release the hold and regain
full control of the throttle as needed.
The "Control" line is for setting the ability to turn this function ON/OFF with a switch. Selecting "INH" inhibits this
function from operating.
To select a switch to turn throttle hold on or off during flight, set the Control field to ON. With the cursor next to
CTRL, deflect the switch that will control throttle hold. In one position the control will be ON. Moving the switch
to the opposition will turn the control OFF.
Move the cursor next to "Position" and set a percent of full throttle that the throttle channel will deflect to
automatically when the control switch is moved to the ON position.
THROTTLE CURVE: The throttle's output is normally linear in relation to movement of the throttle stick. A non-
linear relation between the movement of the throttle stick and the throttle in the model can allow for optimum
control of power to the model (which is also linked to the control of the pitch of the main rotor blades). These
non-linear control curves can be customized for the particular model.
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