Futaba 8UHFS, 8UHPS - Manual (Page 67)

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The Speed function is used to offset
the aileron, elevator, and flap servos to the
position that provides maximum drag for
cruise and high-speed flight. Normally
the ailerons and flaps are raised about 3-
5°. Some airfoils, notably the RG-15,
actually have higher drag with reflex, so
Speed function should not be used with
this section and other similar ones. The
elevator neutral can also be offset in order
to trim out any pitch changes caused by
the trailing edge reflex. This function is
activated by flipping switch G to the
forward position.
If you wish to have the three-position
switch above the left-hand stick (position
E), you should purchase the 8UH system.
Speed presets
Inputting the Speed presets for your model
To PMIX-1 function
To START function
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 SPEED function.
Turn the SPEED 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 SPEED has
separate Flap 1 and Flap 2 offsets.