S6R and S8R configuration questions and concerns

[Kitchenman]

Congrats, now the real fun starts! You may want to check that video again.

No, the pins must face the tail, other than that you can orient it however you like. It is the same for both the SxR and the SRx series. In the product manual, on the page with the big QR code, it shows the setup screens for the "FrSky RX STAB" Lua script for setting the wing type, orientation, etc. That "Pins toward tail" is a statement, not a variable...

Note that the SR6 and/or S6R had a problem with the label backward or upside down, causing great confusion. On Aloft's site it is only mentioned on the S6R page. It is pretty well documented on RCG, you may want to check there - search on 'SR6' 'label' and a bunch of stuff comes up.

BTW, you may want to start a new thread for the SRx models, in order to help others avoid the SRx vs. SxR naming confusion.

Follow the pins… boss follow the pins

 

[Kitchenman]

Is this problem solved? I’ve got the same issue with SR6, running latest 2.1.8 firmware, only auto level but no stabilisation, transmitter X20

It has to do with channel 12 being active. It needs to be inactive. If you have that on a 3 pos. switch change its position and you’ll note the difference. I switched ch12 to the momentary button on the back while CS3 also needs to be active. Working on a setup that will also cancel the gas motor settings and set throttle to 100% when CS3 is active. Most fuel motors do not need 100% travel thus canceling any chance of ch12 activation.

 

[nuclear__]

Hi, it may be irrelevant.
I have jumper t16 pro and sr8
Just set it up with last firmware. (S8R_ACCST_2.1.0_FCC)
Running Lua telemetry v2.0.1 i would like to know if there is a way to see pitch on screen.
I can only see RSSI and battery. Actually i cant discover accelaration ID's .
Is S8R enough or do i need more equipment?

 

[Lanhammer]

Has anybody flown a hand launch plane with a FrSky S6R S8R?? I'm curious to know which mode works best for assisting a difficult to launch model. I have a Stinger 64 EDF Jet model that is always a struggle to get airborne. It takes a very hard toss, and quick movement to get my right hand onto the elevator quick enough to keep from hitting the ground on climbout. And sometimes it likes to roll over upside down on hand launches. I might think some form of auto correction could help the plane "fly" out on it's own until I can get my hand on the controls.

 

[hapete]

I need help with getting self-check initiated from my TX.
Taranis X9D+ 2019 SE
FrOS 2.3.12
ISRM -S-X9 1.1.0/2.1.6 FCC

S6R
2.1.0 firmware

I have configured and calibrated the RX using two different computers with the STK tool and most recently using Lua script on my TX.

CH9 on LS
CH10 SA
CH11 SB
CH12 SE

All switches appear to be to functioning properly on the channels monitor page.

The receiver will not initialize the self-check with the CH12 switch, it will initialize by pressing the RX FS button.
I get the control surface dance, and then keeping the throttle closed, move the ail, elev, and rudder through their full motion and then powering off the RX.
After re-establishing RX power, I get normal control surface movement with the sticks but CH9, 10, 11, and 12 are unresponsive.

Internal RF settings
Mode ACCST D16
Channel Range CH1-16

Binding Mode
Ch1-8 Telem on

Any suggestions are greatly appreciated!

 

[ridgerunner]

... CH12 SE ...

Channel 12 needs to be on a three position switch. To enter cal mode self check mode, the Rx needs to see the middle position three times in less than three seconds.

 

[ridgerunner]

I meant to say self check mode not "cal mode".

And what's the deal with this forum software - the "preview" button does not work and there is no "Edit" button!? (I just started posting here today.)

Edit: found the "Edit" button! (I hate it when web programmers use super low contrast UI elements! - i.e. invisible mystery meat navigation!)
Edit2: The preview button started working, but the only option is to SAVE or CANCEL - no option to return to what I was editing?
Edit3: Ok, it turns out the "Preview" button is a toggle switch - click a second time to return to editing mode.

/curmudgeon mode off 8^)

 

[ridgerunner]

Summary:

• The S6R/S8R receivers, (when connected to more than one or two digital servos), will NOT operate reliably in stabilization mode when powered using a weak linear power supply (e.g. UBEC 2-3A/4 cell AA NiMH/4 cell alkaline). They DO operate reliably in stabilization mode when powered using a strong power supply (e.g. SBEC 5A or greater).
• You CAN install the S6R/S8R with the pins facing forward when operating in "Quick mode".
• You CAN incorporate fancy-ish mixing with the S6R/S8R - e.g. aileron differential, flaperons, elevator-2-flaps, aileraps, etc.

Discussion:
Ok, so I purchased one each of the S6R and S8R back in Oct 2017 and put them on the "someday" shelf. This week I finally decided to give one of them a try - I recently purchased a small, powerful hand launch power plane (a FlightLine P-51D Mustang 850mm), and figured that having an auto-level stabilized gyro on board, (combined with a custom "Launch mix"), would greatly assist in hand launching. (I had a bad experience a couple years ago with another small hand launch pocket rocket EDF plank (Freewing Lippisch P.15 64mm EDF Jet), and that thing was hard to launch successfully! It had no gyro, just an X4R.)

So I first set out to educate myself on the SxR setup/configuration, and knew from the outset that this was going to be a rather deep rabbit hole. I first downloaded all the latest and greatest SxR manual and firmware from the frsky website and read the owner's manual. I then went onto YouTube and watched several of the recommended setup vids and read large swaths of the forum discussions both here and on the RCGroups threads. This led me to the pretty darn good RCdiy SxR page. At this point I had a pretty good idea what to do and what to expect.

Following the recommended procedures, I...

• Flashed the X9Lite (my plank controller) with the latest OTX firmware (2.3.14).
• Updated the X9Lite SD contents to the version compatible with OTX 2.3.14 (2.3V0038).
• Flashed the X9Lite RF module with the latest FrSky firmware (ISRM-N_2.1.6.frsk).
• Flashed the S6R with the latest FrSky firmware (S6R_ACCST_2.1.1_FCC.frsk).
• Set up a base model in the X9Lite with the standard AETR channels (CH1-4), plus; CH5=Ail2, CH9=S1, CH10=SWA and CH12=SWB.
• Connected my 4-cell NiMH (AA Eneloops) power pack to the S6R and bound it to the TX.
• Performed S6R calibration procedure using the Lua script on the X9Lite (SxR_Calibrate.lua in the SD\UTILITIES directory).
• Ran the SxR configuration script and setup my desired (default "Quick mode") configuration (FrSky SxR.lua in the SD\SCRIPTS\TOOLS directory).
• Connected one digital servo (EMax ES09MD) and performed the "self check" calibration step. (i.e. Switch SWB (CH12) to middle position three times quickly -> blue light on -> servo dance -> blue light off -> move each gimbal axis to its full extents with 100% dual rates -> power off S6R.)
• Connect four more servos to test the stabilization modes.

All went smoothly until the last step where I connected up a bunch of servos. At this point the Rx went crazy when either stabilization mode was activated - the servos would move and then lock up and the RED LED on the S6R would light up solid. It would then spring back to life for a little while then lock up again when the Rx was moved around. I was thinking WTF!? With stabilization off, the servos all responded normally and the red LED never came on. Something is wrong with this unit! I tried flashing the S6R with older version of the firmware and still the problem persisted.

I grabbed my other SxR (the S8R) and followed the same setup/config procedure described above , and was disappointed that it failed in the exact same way! Ok, the likelihood of having two bad units was low, so I started looking at the power supply. The Eneloops were all partially discharged so I put them on the charger and fetched four brand new Duracell alkalines. Same bad behavior! Once again, WTF!? After trying again with four fully charged Eneloops, and again getting the same red light/servos lockups, it was time to break out the big guns. I fetched and connected up my bench power supply, set it for 5.0V and connected it up to the S6R. Voilà! everything started working perfectly!

After some research on the internet, I found an excellent post (from a guy who works at Scorpion), that describes how a stabilizing controller, connected to digital servos, can put very high loads on the power supply (for very short durations, when the servo is commanded to move). I realized that this is exactly the situation I found myself in.

Once I figured out what was going on, I connected up the ESC from the plane (a clone of the HobbyKing 30A UBEC) to the S6R and did some testing. It would work fine with just one servo attached, and most of the time with two attached, but would consistently fail with three servos attached when the stabilizer function was vigorously tested (shaken about). Also, when I felt the (linear) BEC chips on the ESC, they were getting very hot during these vigorous motions, but would quickly cool back down when the Rx was left still. This ESC performed A-Ok when the stabilizer was turned off. This small P-51D plane has only three servos, but I did not feel comfortable using the stock ESC, so I grabbed a Turnigy Plush 40A ESC I had on hand, (which has a 5A (switching) SBEC), and connected it up with five servos for a tougher, more rigorous test. It performed flawlessly and passed the five-servo-torture-test with flying colors! I installed this into the plane and I am now confident that it will perform A-Ok with the 3-servo plane undergoing larger flight loads.

Bottom line: If your plane has an ESC with a weak linear BEC powering one of the FrSky SxR receivers, don't be surprised if you get an in-flight failure. i.e. If you want a successful experience with the SxR, MAKE SURE YOUR PLANE IS FITTED WITH AT LEAST A 5A SWITCHING SBEC!

Whew!

Hope this helps!

 

[ridgerunner]

Has anybody flown a hand launch plane with a FrSky S6R S8R?? I'm curious to know which mode works best for assisting a difficult to launch model. I have a Stinger 64 EDF Jet model that is always a struggle to get airborne. It takes a very hard toss, and quick movement to get my right hand onto the elevator quick enough to keep from hitting the ground on climbout. And sometimes it likes to roll over upside down on hand launches. I might think some form of auto correction could help the plane "fly" out on it's own until I can get my hand on the controls.

Easing the hand launch is precisely why I fitted my new "pocket warbird" P-51D 850mm with an S6R (see my long post above). I have not yet maidened it, but will report back once I have. I have a special "launch mode" mix set up that is active when the momentary switch is activated. This mix (temporarily) does three things during the launch phase: 1.) sets throttle at 80%, 2.) sets the gyro to full auto self level mode, and 3.) applies 30% up elevator. While holding the momentary switch on with one hand and tossing the plane with the other, (and not touching the gimbals), this "launch mode" mix should cause the plane to enter a steady, wings level climb regardless of how well I toss it. Once safely in the air, I'll release the momentary switch and take over manual control.

I know that RCDIY has a recommended plan for performing the first flights where it is first flown with stabilization off, then gradually adding in the stab modes once the plane is trimmed out, but I am not going to go that route (because a failed hand launch in manual mode is the most likely failure mode IMO). I will make dang sure that every thing is set up correctly before the first toss! (Which I'll be filming with my hatcam and posting to my YT channel).

So far I am very impressed with the SxR and I'm betting that this will work quite well for assisting in hand launching pocket rockets! (and I just purchased several more that I plan to fit on some new planks, including a replacement 64mm EDF Lippisch)

Good luck with yours!

 

[hapete]

Summary:

• The S6R/S8R receivers, (when connected to more than one or two digital servos), will NOT operate reliably in stabilization mode when powered using a weak linear power supply (e.g. UBEC 2-3A/4 cell AA NiMH/4 cell alkaline). They DO operate reliably in stabilization mode when powered using a strong power supply (e.g. SBEC 5A or greater).
• You CAN install the S6R/S8R with the pins facing forward when operating in "Quick mode".
• You CAN incorporate fancy-ish mixing with the S6R/S8R - e.g. aileron differential, flaperons, elevator-2-flaps, aileraps, etc.

Discussion:
Ok, so I purchased one each of the S6R and S8R back in Oct 2017 and put them on the "someday" shelf. This week I finally decided to give one of them a try - I recently purchased a small, powerful hand launch power plane (a FlightLine P-51D Mustang 850mm), and figured that having an auto-level stabilized gyro on board, (combined with a custom "Launch mix"), would greatly assist in hand launching. (I had a bad experience a couple years ago with another small hand launch pocket rocket EDF plank (Freewing Lippisch P.15 64mm EDF Jet), and that thing was hard to launch successfully! It had no gyro, just an X4R.)

So I first set out to educate myself on the SxR setup/configuration, and knew from the outset that this was going to be a rather deep rabbit hole. I first downloaded all the latest and greatest SxR manual and firmware from the frsky website and read the owner's manual. I then went onto YouTube and watched several of the recommended setup vids and read large swaths of the forum discussions both here and on the RCGroups threads. This led me to the pretty darn good RCdiy SxR page. At this point I had a pretty good idea what to do and what to expect.

Following the recommended procedures, I...

• Flashed the X9Lite (my plank controller) with the latest OTX firmware (2.3.14).
• Updated the X9Lite SD contents to the version compatible with OTX 2.3.14 (2.3V0038).
• Flashed the X9Lite RF module with the latest FrSky firmware (ISRM-N_2.1.6.frsk).
• Flashed the S6R with the latest FrSky firmware (S6R_ACCST_2.1.1_FCC.frsk).
• Set up a base model in the X9Lite with the standard AETR channels (CH1-4), plus; CH5=Ail2, CH9=S1, CH10=SWA and CH12=SWB.
• Connected my 4-cell NiMH (AA Eneloops) power pack to the S6R and bound it to the TX.
• Performed S6R calibration procedure using the Lua script on the X9Lite (SxR_Calibrate.lua in the SD\UTILITIES directory).
• Ran the SxR configuration script and setup my desired (default "Quick mode") configuration (FrSky SxR.lua in the SD\SCRIPTS\TOOLS directory).
• Connected one digital servo (EMax ES09MD) and performed the "self check" calibration step. (i.e. Switch SWB (CH12) to middle position three times quickly -> blue light on -> servo dance -> blue light off -> move each gimbal axis to its full extents with 100% dual rates -> power off S6R.)
• Connect four more servos to test the stabilization modes.

All went smoothly until the last step where I connected up a bunch of servos. At this point the Rx went crazy when either stabilization mode was activated - the servos would move and then lock up and the RED LED on the S6R would light up solid. It would then spring back to life for a little while then lock up again when the Rx was moved around. I was thinking WTF!? With stabilization off, the servos all responded normally and the red LED never came on. Something is wrong with this unit! I tried flashing the S6R with older version of the firmware and still the problem persisted.

I grabbed my other SxR (the S8R) and followed the same setup/config procedure described above , and was disappointed that it failed in the exact same way! Ok, the likelihood of having two bad units was low, so I started looking at the power supply. The Eneloops were all partially discharged so I put them on the charger and fetched four brand new Duracell alkalines. Same bad behavior! Once again, WTF!? After trying again with four fully charged Eneloops, and again getting the same red light/servos lockups, it was time to break out the big guns. I fetched and connected up my bench power supply, set it for 5.0V and connected it up to the S6R. Voilà! everything started working perfectly!

After some research on the internet, I found an excellent post (from a guy who works at Scorpion), that describes how a stabilizing controller, connected to digital servos, can put very high loads on the power supply (for very short durations, when the servo is commanded to move). I realized that this is exactly the situation I found myself in.

Once I figured out what was going on, I connected up the ESC from the plane (a clone of the HobbyKing 30A UBEC) to the S6R and did some testing. It would work fine with just one servo attached, and most of the time with two attached, but would consistently fail with three servos attached when the stabilizer function was vigorously tested (shaken about). Also, when I felt the (linear) BEC chips on the ESC, they were getting very hot during these vigorous motions, but would quickly cool back down when the Rx was left still. This ESC performed A-Ok when the stabilizer was turned off. This small P-51D plane has only three servos, but I did not feel comfortable using the stock ESC, so I grabbed a Turnigy Plush 40A ESC I had on hand, (which has a 5A (switching) SBEC), and connected it up with five servos for a tougher, more rigorous test. It performed flawlessly and passed the five-servo-torture-test with flying colors! I installed this into the plane and I am now confident that it will perform A-Ok with the 3-servo plane undergoing larger flight loads.

Bottom line: If your plane has an ESC with a weak linear BEC powering one of the FrSky SxR receivers, don't be surprised if you get an in-flight failure. i.e. If you want a successful experience with the SxR, MAKE SURE YOUR PLANE IS FITTED WITH AT LEAST A 5A SWITCHING SBEC!

Whew!

Hope this helps!

Thanks, this makes sense!

I've spent countless hours watching you tube videos and online SxR setup instructions beforehand. I'm new to the Taranis and opentx, so it's been a steep learning curve, but I feel it worth it for the capabilities it provides. After setting it up initially, unable to get it working, I bought a second one and the stabilization doesn't work on it either.

On the new Taranis 2019 x9d+ SE, is a three-position switch. The plane I'm setting up is a glow/gas .60 size P51, currently setup with a 4.8v NiMH receiver battery. I've been considering swapping to a 2s LiPO 7.4V. I'll make a trip to the local hobby shop today and see what I can put together. I'll post the results.

 

[ridgerunner]

... On the new Taranis 2019 x9d+ SE, is a three-position switch. ...

Of course it is - sorry for the wrong advise! D'oh! (I've been working with the X9Lite a lot recently, and its shoulder switch is only two position - got them mixed up!)

... The plane I'm setting up is a glow/gas .60 size P51, currently setup with a 4.8v NiMH receiver battery. I've been considering swapping to a 2s LiPO 7.4V. I'll make a trip to the local hobby shop today and see what I can put together. I'll post the results.

I wouldn't trust a 4-cell NiMH to run the SxR with more than one servo connected. The 2S LiPo would be an excellent choice if your servos can handle 8.4V - but most can't.

Regarding the SxR not working, I would definitely recommend reading RCDIY's page - its a bit dated, but he covers all the bases very thoroughly. I found it to be very helpful. Also, I found this YouTube video quite helpful as well:

 

[Roger53]

Hello,
I'm having problems with the S8R. The S8R is always in a 'gyro mode' even with the Ch10 switch in the OFF position.

This is my first stabilize rx so possibly I am not understanding the true operation. I am expecting the gyro to be active in Stabilize and AutoLevel positions which it is AND
I am expecting the gyro to be totally off in the off position, but the gyro is still active in the off position.

I have checked the monitor page on my 9D+ and the ch10 switch is working but has no effect on the gyro in the off position.
So, am I understanding the operation of the gyro properly? and if so what have I missed that allows the gyro to stay active all the time?

I obviously do not want to try a takeoff/test flight with no control over the gyro.

Background:
Everything installed good, I have Ch12 on 3 pos swh. Ailerons on 'Y", Flps on Y Ch 7. S8r has quick mode enabled.
Did a Rx calibration, and all control surfaces are working in the correct directions. I did a Self check w/calibration.
Everything responds correctly EXCEPT I cant get the gyro to turn off. I also tried another switch for ch10 with same results

Thank you for your help

 

[Wayne]

Power Brown out - We recently evaluated some small foam warbirds and found that they could really suck down an ESC BEC to the point of browning out. We were OK with 2 servos, but the third would shut things down. We ended up swapping to a better ESC and still had the issue. We then swapped one of the servos for a similar unit from PowerHD and the issue was gone. Not sure what the cheap=o servos are that they put in the foam planes, but they seem to be able to draw a lot of amps.

I always test a new plane using a BEC by driving all servos at the sametime for about 30 seconds to make sure I'm not going to end up with a brownout. Just smash those sticks around.. It can save a plane.

This was without a stabilized receiver, and they were analog servos, but just thought I would add to the conversation. It is a good test to perform prior to first flight regardless of the setup.

 

[ridgerunner]

... what have I missed that allows the gyro to stay active all the time? ...

Channel 12 also affects the gyro - when CH12 = +100, auto-level mode is engaged.

 

[Roger53]

Channel 12 also affects the gyro - when CH12 = +100, auto-level mode is engaged.

That was the problem I did another self check and everything seems to be in working order. Now i wait on a nice day.
I had read every page of the instructions and didn't remember seeing anything about keeping channel 12 @ -100 except when activating the self check.
So, I went over the instructions again and still couldn't find it. It would have been helpful to have had a statement to 'keep ch 12 @ -100 after self check' but
i should have realized that bc ch12 is supposed to be on a momentary switch during flight duh...

You have saved me much frustration and time
Thank you for your help.

 

[hapete]

Managed to get mine working using Opentx 2.3.14 and 2.10 firmware on the receiver. Using 2.1.1 it would not self-check. Updated the RX firmware with the STK tool and then calibrated/configured using the Lua script. It still will not self-check using the CH12 switch, however, I did get it to self-check with the FS button. Right now, it's setup in quick mode with the urgent auto-level set using the momentary button. Both stabilize and auto-level mode appear to be functioning normally with correct control movement.

I did pick up a 2s 7.4 v battery and a 10-amp BEC. There wasn't any difference in the receiver functionality, so for the sake of simplicity I'm using the NiMH receiver battery without the BEC.

Now waiting for a nice day for a test flight!

 

[Lanhammer]

Easing the hand launch is precisely why I fitted my new "pocket warbird" P-51D 850mm with an S6R (see my long post above). I have not yet maidened it, but will report back once I have. I have a special "launch mode" mix set up that is active when the momentary switch is activated. This mix (temporarily) does three things during the launch phase: 1.) sets throttle at 80%, 2.) sets the gyro to full auto self level mode, and 3.) applies 30% up elevator. While holding the momentary switch on with one hand and tossing the plane with the other, (and not touching the gimbals), this "launch mode" mix should cause the plane to enter a steady, wings level climb regardless of how well I toss it. Once safely in the air, I'll release the momentary switch and take over manual control.

I know that RCDIY has a recommended plan for performing the first flights where it is first flown with stabilization off, then gradually adding in the stab modes once the plane is trimmed out, but I am not going to go that route (because a failed hand launch in manual mode is the most likely failure mode IMO). I will make dang sure that every thing is set up correctly before the first toss! (Which I'll be filming with my hatcam and posting to my YT channel).

So far I am very impressed with the SxR and I'm betting that this will work quite well for assisting in hand launching pocket rockets! (and I just purchased several more that I plan to fit on some new planks, including a replacement 64mm EDF Lippisch)

Good luck with yours!

I gave auto level mode a try yesterday during a hand launch with my Stinger 64. I have to say the results are promising. I engaged auto level mode, applied full power, and threw firmly upward at about 20 degree angle with my right arm. The plane quickly pointed the nose at the horizon and kept the wings level and flew away 5 feet off the ground. No weird stalling or spiraling out of my hand that I have battled with this plane. AND I had a couple seconds to get my hands on the sticks to start controlling. EXCELLENT. It's not perfect. Trying to take control and fly the plane in this mode is not easy. The sticks are so un responsive in autolevel mode. I can barely turn the plane around. It makes a HUGE circle with full aileron and elevator deflection. No big deal, just turn off auto level and fly the plane the way I like.

I still struggle with the Check mode and setup with this receiver. I think mostly caused by signal dropouts that happen when the transmitter is very close to the receiver. I get the RSSI low and Signal Lost warnings quite often. The close proximity sees a necessary scenario when trying to do the check initialization and reset the gyro after trimming the plane. I get it to works right about 1 out of 3 tries it seems. And that bit me yesterday. I think I had a signal drop or something strange happen during check mode yesterday and I somehow made the airplane un flyable with the level calibration. I had much less elevator authority than I was expecting and the plane would not climb. The annoying thing is it flew away fine in autolevel mode from the hand launch, but when I switched to "stabilize off" I suddenly had no control of the model. Opposite of what my instincts were telling me to do...

It works great when you have it setup correctly. But I'm not sure I would trust this in an expensive airplane. It's just too easy to make a mistake. I remember similar issues when learning Helicopter flybarless setup in the early days. But the systems matured to be more fool proof over the years. A live feedback of current settings from the receiver would be nice so that you can tell if the settings are correct after changing the trims or level flight calibration.

 

[Zipper1949 Wally]

Power Brown out - We recently evaluated some small foam warbirds and found that they could really suck down an ESC BEC to the point of browning out. We were OK with 2 servos, but the third would shut things down. We ended up swapping to a better ESC and still had the issue. We then swapped one of the servos for a similar unit from PowerHD and the issue was gone. Not sure what the cheap=o servos are that they put in the foam planes, but they seem to be able to draw a lot of amps.

I always test a new plane using a BEC by driving all servos at the sametime for about 30 seconds to make sure I'm not going to end up with a brownout. Just smash those sticks around.. It can save a plane.

This was without a stabilized receiver, and they were analog servos, but just thought I would add to the conversation. It is a good test to perform prior to first flight regardless of the setup.

I just found this. I had brown-out issues using an S8R in a BNF Corsair. Crashed twice! A friend recommended using Castle SBEC and avoid the cheap SBEC's.

 

[Hank]

I gave auto level mode a try yesterday during a hand launch with my Stinger 64. I have to say the results are promising. I engaged auto level mode, applied full power, and threw firmly upward at about 20 degree angle with my right arm. The plane quickly pointed the nose at the horizon and kept the wings level and flew away 5 feet off the ground. No weird stalling or spiraling out of my hand that I have battled with this plane. AND I had a couple seconds to get my hands on the sticks to start controlling. EXCELLENT. It's not perfect. Trying to take control and fly the plane in this mode is not easy. The sticks are so un responsive in autolevel mode. I can barely turn the plane around. It makes a HUGE circle with full aileron and elevator deflection. No big deal, just turn off auto level and fly the plane the way I like.

I still struggle with the Check mode and setup with this receiver. I think mostly caused by signal dropouts that happen when the transmitter is very close to the receiver. I get the RSSI low and Signal Lost warnings quite often. The close proximity sees a necessary scenario when trying to do the check initialization and reset the gyro after trimming the plane. I get it to works right about 1 out of 3 tries it seems. And that bit me yesterday. I think I had a signal drop or something strange happen during check mode yesterday and I somehow made the airplane un flyable with the level calibration. I had much less elevator authority than I was expecting and the plane would not climb. The annoying thing is it flew away fine in autolevel mode from the hand launch, but when I switched to "stabilize off" I suddenly had no control of the model. Opposite of what my instincts were telling me to do...

It works great when you have it setup correctly. But I'm not sure I would trust this in an expensive airplane. It's just too easy to make a mistake. I remember similar issues when learning Helicopter flybarless setup in the early days. But the systems matured to be more fool proof over the years. A live feedback of current settings from the receiver would be nice so that you can tell if the settings are correct after changing the trims or level flight calibration.

I have SxR receivers on a couple of handlaunch 1/12 scale combat warbirds that are very "dynamic" at launch. What I did was to calibrate auto level with the plane in a nose up angle for climbing. At launch, I just toss it and let it climb without needing inputs from me. Once it reaches a decent altitude and I have a good hold of the transmitter, I switch over to stabilize.

 

[HornPlayer]

I found this site by accident after trying to set up a model with a S6R that worked well in another model. I use a QX7 running erskyTX. I set the mixes up using the chart from this site for CH10 and 11. I had given up trying to use quick mode and have found a combination that cancels out Hover and Knife Edge as I don't do that stuff. One thing that prevented anything working properly for nearly 8 hours was that it had been so long since I programmed the mixes for these receivers that I had forgotten that it is essential to change the mixer behaviour from "multiplex" (default) to "Replace". Eureka all the combinations I had previously tried suddenly worked. It is a while since I used Open TX but I presume there is a similar choice in that system that could prevent a lot of things from happening as well.