E-flight Blade SR RTF Airframe Instruction Manual - page 15
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Initialization and Response Test
The following checklist includes the steps to properly initialize and operate the gyro.
• Afterconnectingtheflightbatterytothe2-in-1unit,donotmoveorswaythehelicopter.Allowittoremain
motionless until the red LED on the gyro illuminates solidly, indicating that the gyro has initialized properly and
is ready for use.
Note: It is extremely important that you do not move or sway the helicopter after powering it on and before the
gyroinitializes.Thegyromustbeallowedadequatetimetorecordtheneutralpositioninordertoinitialize
for proper operation. If you ever accidentally move the helicopter after powering it on and before the gyro
initializes, power the helicopter off (by disconnecting the flight battery from the 2-in-1 unit) and repeat the
correct process.
• Oncethegyroinitializesproperly,andbeforemakingyourfirstflight,confirmthatthegyroisresponding
properly to the movements of the helicopter and providing proper inputs to the tail rotor in order to
counteract any unwanted changes in yaw.
For added safety during the test, disconnect the main motor from the 2-in-1 control unit.
•ThensecurethehelicopterandensurethatallobjectsarefreeandclearofthetailrotorbladesReconfirming
that the main motor has been disconnected from the 2-in-1 control unit, advance the throttle/collective stick
onthetransmittertoapproximately1/4–1/2travel.Usecaution,asthetailmotormaybegintospinthetail
rotor blade.
• Nowitisnecessarytoconfirmthatthetailmotor/rotorrespondsproperlytoinputsfromthegyro.While
holdingthehelicoptersecurelyandensuringthatallobjectsarefreeandclearfromthetailmotor,quickly
twist the nose of the helicopter to the left. If the tail motor/rotor is responding properly to inputs from the
gyro, the rpm’s will increase to counteract the nose twisting to the left, in order to bring the nose back to the
right.Whenquicklytwistingthenoseofthehelicoptertoright,therpm’sshoulddecreaseorstopentirely.
If the tail motor/rotor is not responding properly, use the reverse switch located on the gyro to reverse the
direction of response.
• Afterconfirmingthatthetailmotor/rotorrespondsproperlytoinputsfromthegyro,disconnectthe
battery from the 2-in-1 control unit. Then, power down the transmitter and reconnect the main motor to
the 2-in-1 unit.
Now that you’ve confirmed the gyro provides proper inputs to the tail motor/rotor, review the following
sections of the manual BEFORE proceeding with the first flight.
Gain Adjustments
The G110 offers optional-use remote mode selection and gain adjustment features. These features allow the gyro
mode (Standard Rate or Heading Lock) and gain values to be set remotely in the transmitter. However, for simplified
use, while maintaining maximum performance in the Blade SR, these features will not be utilized (they are usually best
utilized when using a programmable computer transmitter).
• Becauseyouwillnotbeutilizingtheremotemodeselectionandgainadjustmentfeaturesofthegyro,the
gyro’s yellow-colored auxiliary (AUX) lead and connector will not be plugged into the receiver. This is not a
problem as the gyro will always be in the heading lock mode and the gain value can be set using the gain
value adjustment pot located on the gyro itself.
• Aftermakingtheinitialtestflight,youmayfindthatitisnecessarytoadjustthegyrogainsettingvalueprior
tosubsequenttestflightsinordertoachievethebestpossibleperformance.Thegoal,whenusingaheading
lock type gyro, is to find the highest gain setting value at which the tail/nose of the helicopter does not twitch
quickly(oscillate)fromsidetosideinallareasofflight(includingfastforwardflightanddescents).Inthecase
of the G110 in the Blade SR, we find that it is typical to have the gain setting adjustment pot set as shown
below, which is only a few degrees off of full counterclockwise.
Optimum Range
• Small,airswooshingnoisesalongwithasmallamountofmovementsidetosideisnormalforadirect-drive
tail system, like that found on the Blade SR. Don’t confuse this for a gain setting that is too high.
Note: If the tail spins in one direction or the other as you are trying to lift off, please check the gyro gain. It
may be adjusted too high or too low.