Futaba 8UHFS, 8UHPS - Manual (Page 66)

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The Start function is used to offset the
aileron, elevator, and flap servos to the
position that provides maximum lift
during launch. Normally the ailerons
and flaps are drooped about 20-30°, with
the flaps drooped slightly more to prevent
tip-stalling on tow. The elevator neutral
can also be offset in order to trim out any
pitch changes caused by the flap and
aileron presets. This function is
activated by flipping switch G to the aft
position.
If you wish to have the three-position
switch above the left-hand stick (position
E), you should purchase the 8UH system.
START (launch) presets
Inputting the Start (Launch) presets for your model
To SPEED function
To ELEVON function (GLID1FLP)
or V-TAIL (GLID2FLP)
Channel
being offset
for START
2. Aileron 1 offset
Input the desired Aileron 1
offset with the (+)/(-) keys.
3. Elevator offset
Input the desired Elevator
offset with the (+)/(-) keys.
4. Flap offset*
Input the desired Flap offset
with the (+)/(-) keys.
5. Aileron 2 offset
Input the desired Aileron 2
offset with the (+)/(-) keys.
(You may reset to zero by
pressing the (+)/(-) keys
simultaneously.)
Data input keys
These keys are used to move through the
five submenus in the START function.
Turn the START function ON by pressing the (+)
key ("ON" or "OFF" displayed depending on
Switch G position). Turn off (INH) the function
with the (-) key.
Servo offset
Range: -100 to +100%
Initially set to 0%
*The GLID 2FLP menu for START has
separate Flap 1 and Flap 2 offsets.