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10CH Essential Instructions R1.2 

 

2022/11/05 

10 

Just as experienced RC pilots check stick directions before the first flight of the day, so a pilot using a stabilizer 
should regularly check that the surfaces move correctly in response to a disturbance.  

9. Set dual rates and expo in the transmitter 

With the control surfaces set to move in the correct directions and with the full throws recommended for your 
model, you can now adjust the response to transmitter stick inputs by setting dual rates (D/R) and expo. 

A good starting point for D/R is to set High Rate to 100%, Mid-Rate (if available) to 80-85%, and Low Rate to 65-
75% for each axis. Expo of around 20% softens response around neutral and can make smooth flying easier. 
These settings can be adjusted to your liking after the initial flights. 

Stabilization settings also affect the response of the model to transmitter input, typically somewhat reducing 
sensitivity with an expo-like effect.  

Note that the dual rate and expo settings in the transmitter determine stick response but 

don’t affect

 how 

stabilization works. That is entirely done within the receiver.  

10. Adjust the stabilizer gain pots 

As delivered the stabilizer gains are normally at 

the 12 o’clock position. For first flights s

et the 

three gain pots at about the 10 o’clock position. 

This is a good conservative starting point that 
should produce noticeable stabilization. For 
most models, at least one or two gain 
adjustments will be needed during flight testing 
to achieve optimum stabilization.  

11. Prepare for flying 

Check that the balance of the model is correct according to the manual. 

Check the control directions and stabilization functions one more time.  

Do a reduced-power range test as directed in the transmitter manual (should give at least 30m/100 feet range 
with full control).  

Check that the switch is operating correctly to turn stabilization OFF (red Status light only) and ON (green and 
red Status lights). Yet again, make sure you know which way is OFF! 

Test failsafe operation by running the model (well secured) at about half throttle and turning off the transmitter. 
With the default No-pulse setting, the motor of an electric-powered model should stop after a couple of seconds 
and the control surfaces should stay in their current positions. User-set Failsafe (as described in Step 3 on page 
4) moves ALL channels to pre-set failsafe positions. This may be preferred for an electric model and is 
mandatory for an IC (fuel-powered) model. 

If you have Master Gain (channel 8), check that it is set it to the middle of its range and that increasing the 
control knob or slider increases the resulting stabilizer reaction. Reverse the channel output if not. 

12. Test fly 

For safety, always start a test flight with the stabilizer turned OFF (green Status light OFF).  

Power ON the model. 

Take off and fly around, adjusting trim as necessary to make sure the model flies properly without stabilization. 
If trim is very far off neutral, land and make mechanical adjustments. 

Summary of Contents for LM0087

Page 1: ...nnel 6 Stabilization Direction 6 Stabilization Always ON Optional 6 Step 5 Using Stabilization if activated 6 1 Set up the transmitter 7 2 Bind the receiver 7 3 Test the receiver 7 4 Mount the receiver in the plane 7 5 Connect servos and speed control ESC set switches and wing type 8 6 Verify control directions adjust centring and servo throws 8 7 Test stabilization response and directions 9 9 Set...

Page 2: ...ll as the newer NX and iX transmitters The receiver automatically switches mode between DSMX and DSM2 as required An eight or more channel transmitter with voice capability allows use of all the available functionality but configuration options allow operation with radios having fewer features or channels The Lemon 10 channel receiver also works with open source transmitters such as Taranis and Tu...

Page 3: ...the Throttle connection to channel 1 The 10 servo connectors have common V and Ground pins as is normal practice although voltage is normally supplied on the Throttle channel from the ESC However this receiver has in addition isolated independent BEC1 and BEC2 power input pins which permit different power arrangements which can increase reliability You can t use these connectors to supply power to...

Page 4: ...ervos stay in their current positions while the ESC after a brief delay will normally shut down power to the motor 3 By contrast the User set failsafe option causes the receiver on loss of signal to send a pre set value to each of the servos and the ESC No pulse failsafe is adequate for most electric powered models User set failsafe is often preferred however To activate User set Failsafe proceed ...

Page 5: ...d three red programming lights G1 G2 G3 and R1 R2 R3 Press button C for no more than 2 seconds to identify these lights Also locate the position of the blue and green Setup lights and the red and green Status lights as shown in the picture Activating a Stabilization Option To activate stabilization the receiver must be programmed with one of five optional configurations indicated by the three red ...

Page 6: ...three green 5 The Setup lights briefly show which channel is being used currently Green CH7 Blue CH5 6 To change tap button C 7 Allow the receiver to exit from this mode and power OFF Remove Bind Plug from channel 8 pins Turn on the receiver and test operation of the transmitter switch on the selected channel The green Status light should now show whether stabilization is ON or OFF Note that when ...

Page 7: ...ny delta wing elevon or V tail mixing in the transmitter if these mixes are required when stabilization is active they must be done in the receiver Make sure servo Travel end points limits is set to 100 Set up a switch on channel 7 or optionally on channel 5 to control Stabilization ON OFF Set up channel 8 if available on your transmitter to be controlled by a knob or slider for Master Gain 2 Bind...

Page 8: ...n below in all cases the tail type is Normal even for a V Tail model Important safety warning Leave the motor unconnected or remove the propeller when programming or testing an electric powered model Electric models can bite Configuration for Various Model Types Stabilization Options Model Type Channel Assignments Wing Type Stabilizer LEDs 1 2 3 4 5 6 7 8 R1 R2 R3 Conventional one Ail channel Thr ...

Page 9: ...espond with a momentary pulse when the model is moved about each axis When the model is rolled sharply to the right the right aileron should go down and the left aileron up briefly to resist the displacement Likewise when the model pitches nose down the elevator should go up briefly to compensate And when it yaws nose right the rudder should go left for a moment before returning to neutral Remembe...

Page 10: ...or most models at least one or two gain adjustments will be needed during flight testing to achieve optimum stabilization 11 Prepare for flying Check that the balance of the model is correct according to the manual Check the control directions and stabilization functions one more time Do a reduced power range test as directed in the transmitter manual should give at least 30m 100 feet range with f...

Page 11: ... followed by retesting in flight Many people find that a quick and dirty setup with minimal adjustments to the settings provides adequate stabilization for every day flying but it s a good idea to experiment a bit If you have an 8 channel transmitter Master Gain can accelerate the process of optimizing gain For example you can one by one turn down the gain pots on two axes and experiment with vari...

Page 12: ...itter to calculate battery capacity used mAh Lemon telemetry is displayed using the existing display screens and where available the transmitter s voice capability The transmitter can set alarms in some cases just tones but often voice announcements For example an alarm tone and warning can sound when the flight pack voltage drops to a preset value or if the models exceeds a certain height above g...

Page 13: ...hold Button B and Button F simultaneously for about 6 seconds 2 Release the buttons when all receiver LEDs flash 3 Press Button C briefly The receiver will flash for about 1 second then reboot 4 Reset complete No lights showing Note that Reset does not clear an existing bind Firmware Version Lemon receivers are not user updatable but if you need to contact Lemon about a current telemetry receiver ...

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