Tri-rates are usually meant to desensitize stick movement for beginners from end-to-end of travel, so that over-control is minimized. Most rate settings
are used in this manner, though each person will try different uses depending on the model's needs. There is no dual rate for throttle, since and
alternate reduction of throw is not wanted in this function. A 50% dual rate is suggested on Aileron, Elevon, and Rudder for a starting point for beginning
flyers. As skill and need increases, move up to 75%, then to 100%.
SERVO REVERSING
Earlier radios had only mechanical slide switches, which became unreliable with time, and caused radio failures. Thanks to the microprocessor, this
function is now 100% electronic and extremely easy to do using highly reliable DIP switches for Aileron, Elevon, and Rudder. This function is often used
for aileron servos in reverse or when the mechanics of setting up a servo makes it easier to install on the opposite side of the servo wheel and requires,
therefore, a reverse movement.
MIXING
Models with elevons such as the FMA RAZOR flying wing and models using a V-tail for flight control require a mixer for aileron and elevator either in the
model (FMA MX80) or in the transmitter. T80 has this feature built-in and selectable. This is a 50-50 mixer. That is, it is bi-directional between the
elevator and aileron channels. For each degree of elevator motion, the aileron channel moves an equal amount and conversely. In the model, two
servos move, for example, the elevons. However, they are no longer referred to as an aileron or elevator servo, but rather, left servo/right servo. The
elevon or tail surfaces will both move upor down simultaneously for an up or down elevator command. When aileron command is given, the right servo
will move the right elevon up and the left servo will move the elevon down to produce roll. This combination then gives all the control needed for flying
the model. Always be certain you have disabled mixing when you move to a conventional model and be sure mising is engagted when you are ready to
fly an elevon model. Boat modelers may find it convenient to use this arrangement with twin motors. As stick is advanced, both motors accelerate and
as steering is applied, power to the motors provides differential steering. The rudder may be used independently on the rudder tiller. This makes the
throttle channel available for an auxiliary function. You may chose to remove the centering spring from the elevator stick and engage the ratchet to
make throttle positionable while steering is self-centering.
