HELI – FUNCTION LIST
D/R & EXP – DUAL RATE AND EXPONENTIAL
FUNCTION MODE
H-14
Once the basic helicopter configuration has been 
defined in the SYSTEM Menu, the functions found in the 
FUNCTION LIST are used to complete the setup and then 
to adjust how the helicopter flies and how it is controlled. 
The functions are presented below in the order that they 
appear in the Function List. 
The descriptions are general in nature and are intended to 
provide enough information to decide whether or not to 
use a function, and what types of selections and settings 
to make.
Press the LIST button after the transmitter is powered-up 
to obtain the FUNCTION LIST.
Dual Rates and Exponential curves can be very effective 
in setting up a helicopter to have a particular “feel” when 
performing different types of maneuvers. Just changing 
D/R and EXPO values can change the helicopter’s 
personality, causing the helicopter to take on traits that 
make certain maneuvers easier for the pilot. At times we 
may want the helicopter to feel very crisp, such as when 
performing aerobatics, and then feel softer for other 
maneuvers such as Hovering, and yet other times when 
we would like the helicopter to be very crisp but without 
the tendency to be over-controlled, like in performing 3D 
maneuvers. Dual Rates and Exponential curves can be 
combined to produce these traits. When programming a 
Dual Rate and Exponential curve, think about what kind of 
response is desired from the helicopter.
1. Highlight and select D/R & EXP in the FUNC.LIST 
to obtain the D/R & EXP display. There will be 3 sets of 
values displayed for each channel – Aileron, Elevator 
and Rudder. 
2.  Use the Selector to change between Aileron, 
Elevator and Rudder. Then use it to set dual rate and 
exponential values. If exponential has never been used 
before, try a low positive value like +20. After a while, 
increase it gradually until the desired feel is obtained. 
Use only positive (+) percentages unless there is a 
distinct need to increase control sensitivity.
D/R    EXP
100%    LIN
100%    LIN
100%    LIN
100%    LIN
100%    LIN
100%    LIN
[D/R & EXP]◊0
POS-0
POS-1
POS-2
AILE
AUTO
NORM:INH
ST-1:INH
ST-2:INH
HOLD:INH
D/R    EXP
100%    LIN
100%    LIN
100%    LIN
100%    LIN
100%    LIN
100%    LIN
[D/R & EXP]◊0
POS-0
POS-1
POS-2
AILE
OUTPUT
Extended Screen