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4.2.7 McCREADY (WITH OPTIONAL PITOT TUBE)
If this parameter (ADVANCED SETUP \ n. 9 POLA) is set to “OFF”, all information
related to McCready, McCready Equivalent, and Netto Vario are not displayed on
the instrument.
The McCready value is the average lift value of the last “nn” minutes
To adjust the average lift time go to (ADVANCED SETUP \ n. 19 MCRA).
4.2.8 EQUIVALENT McCREADY (WITH OPTIONAL PITOT TUBE)
If this parameter (ADVANCED SETUP \ n. 9 POLA) is set to “OFF”, all information related to McCready,
McCready Equivalent, and Netto Vario are not displayed on the instrument.
This value indicates the Equivalent McCready value: this means the McCready value considering the current air
speed as the optimal speed.
The equivalent McCready, based on the glider’s polar, the sink rate and the current airspeed (IAS), indicates in
real time at with which true McCready value we are flying compared to the optimal speed. When this value
coincides with the one estimated in the thermal, this means that the current airspeed (IAS) coincides with the
optimal speed (see “speed to fly” paragraph).
To set the reaction time of the Equivalent McCready indicator go to (ADVANCED SETUP \ n. 20 MCRE).
4.2.9 TOTAL ENERGY COMPENSATION (WITH OPTIONAL PITOT TUBE)
To use this function it is necessary to install the optional Pitot tube.
Generally a variometer works as follows: it
feels the atmospheric pressure change rate
considering it as an altitude change, but, if
during the flight the pilot slows the glider
(and even more if he does it quickly) there is
a real change of pressure, so a vario ‘without
compensation’ records it as a climb, but this
variation is caused by a change of speed (kinetic energy) not a true thermal.
With the total energy compensation, the part of the climb due to the change in velocity is ignored, allowing you
to identify “real” thermals.
To properly set the TOTAL ENERGY compensation value go to (VARIOMETER SETUP \ n. 17 TEC), to do it you
should fly in calm air conditions and slow down as if you are entering a thermal. If the vario shows a change in
lift, you have to increase the total energy compensation value, until the change in velocity isn’t recorded as lift.
A typical value for hang gliders is 65. The default setting of “0” deactivates the total energy compensation
function
McCready
Equivalent
McCready