I would just like to say thank you for all your hard work in making these videos. i am new to opentx and have found them very helpful and a wealth of information please keep up the good work 👍
I just wanted to thank you again for your great video's learning a whole lot from it! Just programed most of the plane i am going to build (just wanted to get that out of the way because thats way out of my comfort zone). I only used 13 channels and leaving the gimbals out i only used 3 switches on the taranis thanks to the mixing and use of different modes so thanks again and i already subscribed to your channel and defenitly will keep watching
Another needle in the haystack found. Learned that ★ differential thrust is what I had thought ★ taxi mode is a good example for a mix & my upgrade from taranis x-lite to x9d plus was right ★ rudder can control the motor partially Thanks a lot ... my taranis x9d plus arrived today and time to setup a kind of demonstrator on my desk in the workshop to play around cause I have no twin engine plane cause I had feared them to be too complicated.
Wow! Very cool. It's seems like you could theoretically build an "acro mode only" quad copter with no FC, just some clever programming with the Taranis.
I'm looking to something similar With a fire boat / tug with dual motors. where i can put one in reverse and other in forward with rudder inputs so at low power settings I can swing the bow of the boat around. I was told I can do this with the FrSky Taranis X9D Plus Special Edition 2019 ACCESS 2.4G 24CH Radio Transmitter when i bought this radio, have you done a video on this for boats? I was also told this is a 24 channel radio, but I can only find information on using it as a 16 channel Thank you in advance. I love you video's thank you
@Painless360, in video 5/12 (Dual Rates and Expo) you showed that adding an "input" (such as adding Rud to Thr as you do around 6:36) with a condition (such as switch SE up) while leaving the main input without condition causes the new input to never activate. But in this video you're doing exactly that and it seems to work. So does this "caveat" only apply in the input section and not in the mixer section? Or does it only apply to the same source within a channel? Also, could you explain why one would ever touch the inputs when all of this can be done in the mixer as well? What's the best practice here? Thanks!
This works because they are two different controls and only one of them is being added temporarily by the use of the switch. Check out the openTX mix school while I go through some of the do's and don'ts and show lots of other examples if this is a little confusing. Best of luck!
Hi there. I have recently followed this very helpful guide to set up differential throttles of a 120" Bf110 which is petrol powered. The stumbling block that I have encountered is that in 'Taxi' mode, at low throttle, applying rudder takes the inside throttle below the trim setting and stops the engine. (The outer engine increases by 10% and the inner reduces by 10%) Is there a way to programme a function where the throttle trim setting is taken as a 'hard base' All your vids are much appreciated and are my 'go to' place for problem solving. Thanks Stu K
I'd create a GV, driven by a curve connected to the throttle. Then, use that GV as the weight of the yaw mix into yhe motors. Then, as you throttle down, the amount of yaw changes. See how on the recent car setup tips for continuously changing rates... best of luck
Another great video. I am building an Avro Lancaster and will use the diff thr on Rudder... Not sure if I would need the Diff Aileron though.. More for acrobatic planes?
Awesome video as usual Do any of your Taranis series cover Servo SubTrim, PPM Centre and SubTrim mode - its something I find a little confusing when it comes to setting up my servo centre positions and I always end up using PPM centre for this.
Ok, what is it you are using the features for - servo centring on planes? Travel limits for swash adjustments? Mode selection on flight controllers? Happy to cover it but need more detail if the video is to be of any use..
Great explanation on the capabilities of the Taranis. Instead of using SF which is super safe (but you have to remember to flick it) could you set up a logical switch so that if the throttle is less than say 10% it overwrites the mixes? With an electric craft this would let you check the throws with the throttle in the low position without fear of the motor spinning up, just a thought, what do you think. Cheers Peter
RedHotPheasant Hi Peter, Absolutely! There is no single way to do anything on the Taranis. You can use the trick I show in the sailplane mix for using the throttle position to activate a logical switch to do it that way. Happy flying!
+Painless360 interesting i only imagined using it with rudder, curious to learn what the difference in effect is, i'll go do some research. Thanks for making this video opentx is confusing when one is triyng something new, and every new thing i try,you've already posted detailed instructions for :)
This is awsone but since i have only been doing things from the radio I am completely lost that being said is it possible for this to be done from the radio menu screen sorry I don't know what else to call it I'm a noob
One of the other uses for differential thrust control is when a twin has an engine failure. I've seen a couple of twins crash because the pilot failed to shut or slow the good engine e.g. asymmetric thrust . Is there a way of using telemetry feedback of the engines RPM to control this. E.g. the right engine fails or slows so I need to reduce power in the left, add opposite rudder and add 15 degrees of aileron into the dead engine. P.S. Yes this has happened to me on a real aircraft :-).
Possibly, you'd need an RPM sensor on each motor and then have a few special functions/logical switches to see when one was 'off' and then maybe change the flight mode to provide the trim needed? Tricky but a fun one to try and figure out. Let me know if you crack it!
That things you need are already covered in some depth in the OpenTX Mix School series. You simply need to use a logical switch to detect when the throttle is below the level you want and then use that 'switch' to turn on the differential lines in the mixer.. Best of luck!
Thanks. I'm writing an arduino sketch that does differential thrust and I want to make sure I'm implementing it in the correct way. I have an eagle tree vector that I want to use on a twin engine sea plane, but unfortunately the vector does not support differential thrust, so the arduino will intercept the rudder and throttle commands from the vector and mix those into motor commands.
I've just purchased a micro P38 from Banggood that has no rudder but uses throttle differential somewhat in this way. :) So have I got it right that when you get to full throttle, you will still get one motor slowing down to a max of 30%?
Timothy Smith If you are applying yaw/rudder input yes. The amount of throttle difference is something you need to find on the model by trial and error. There are other ways of doing this - there always are on the Taranis! Happy flying!
I would just like to say thank you for all your hard work in making these videos. i am new to opentx and have found them very helpful and a wealth of information please keep up the good work 👍
Thanks Lee. Just got around to playing with differential thrust and you make it look so easy.
I just wanted to thank you again for your great video's learning a whole lot from it!
Just programed most of the plane i am going to build (just wanted to get that out of the way because thats way out of my comfort zone). I only used 13 channels and leaving the gimbals out i only used 3 switches on the taranis thanks to the mixing and use of different modes so thanks again and i already subscribed to your channel and defenitly will keep watching
Another needle in the haystack found.
Learned that
★ differential thrust is what I had thought
★ taxi mode is a good example for a mix & my upgrade from taranis x-lite to x9d plus was right
★ rudder can control the motor partially
Thanks a lot ... my taranis x9d plus arrived today and time to setup a kind of demonstrator on my desk in the workshop to play around cause I have no twin engine plane cause I had feared them to be too complicated.
Wonderful, ... again! Thank you Sir. I have learned so much from your vids. Please keep going.
Hi. Never mind. I got it by watching your tutorial. Thank you!
:D
P360 do you know if you could have a slider or a pot as a trim between the two motors ? i'am thinking we may have more thrust from one motor .....
Wow! Very cool. It's seems like you could theoretically build an "acro mode only" quad copter with no FC, just some clever programming with the Taranis.
Thank you!
awesome video mate
Thank you!
As always amazing. thanks
I'm looking to something similar With a fire boat / tug with dual motors. where i can put one in reverse and other in forward with rudder inputs so at low power settings I can swing the bow of the boat around. I was told I can do this with the FrSky Taranis X9D Plus Special Edition 2019 ACCESS 2.4G 24CH Radio Transmitter when i bought this radio, have you done a video on this for boats?
I was also told this is a 24 channel radio, but I can only find information on using it as a 16 channel Thank you in advance.
I love you video's thank you
Thanks, helpful as always!
@Painless360, in video 5/12 (Dual Rates and Expo) you showed that adding an "input" (such as adding Rud to Thr as you do around 6:36) with a condition (such as switch SE up) while leaving the main input without condition causes the new input to never activate.
But in this video you're doing exactly that and it seems to work.
So does this "caveat" only apply in the input section and not in the mixer section? Or does it only apply to the same source within a channel?
Also, could you explain why one would ever touch the inputs when all of this can be done in the mixer as well? What's the best practice here?
Thanks!
This works because they are two different controls and only one of them is being added temporarily by the use of the switch. Check out the openTX mix school while I go through some of the do's and don'ts and show lots of other examples if this is a little confusing. Best of luck!
Hi there. I have recently followed this very helpful guide to set up differential throttles of a 120" Bf110 which is petrol powered. The stumbling block that I have encountered is that in 'Taxi' mode, at low throttle, applying rudder takes the inside throttle below the trim setting and stops the engine. (The outer engine increases by 10% and the inner reduces by 10%) Is there a way to programme a function where the throttle trim setting is taken as a 'hard base' All your vids are much appreciated and are my 'go to' place for problem solving. Thanks
Stu K
I'd create a GV, driven by a curve connected to the throttle. Then, use that GV as the weight of the yaw mix into yhe motors. Then, as you throttle down, the amount of yaw changes. See how on the recent car setup tips for continuously changing rates... best of luck
@@Painless360 I will look into that. Thanks for the reply, Much appreciated
Another great video.
I am building an Avro Lancaster and will use the diff thr on Rudder...
Not sure if I would need the Diff Aileron though..
More for acrobatic planes?
+FlyinSunnyCoast I would think so.. Best of luck with the maiden!
Awesome video as usual
Do any of your Taranis series cover Servo SubTrim, PPM Centre and SubTrim mode - its something I find a little confusing when it comes to setting up my servo centre positions and I always end up using PPM centre for this.
Mark Bennetts Where are you using it - plane, quad?
Planes, helis and quads
Ok, what is it you are using the features for - servo centring on planes? Travel limits for swash adjustments? Mode selection on flight controllers? Happy to cover it but need more detail if the video is to be of any use..
Really just servo centring for both planes and heli. For quad it's just to ensure channel mid points are at 1500 when setting up the naze controller
OK, got it - I would always use servo menu for that, you can also see the PWM value in the top so you can get it spot on.
I'll add it to the list..
Great explanation on the capabilities of the Taranis. Instead of using SF which is super safe (but you have to remember to flick it) could you set up a logical switch so that if the throttle is less than say 10% it overwrites the mixes? With an electric craft this would let you check the throws with the throttle in the low position without fear of the motor spinning up, just a thought, what do you think. Cheers Peter
RedHotPheasant Hi Peter, Absolutely! There is no single way to do anything on the Taranis. You can use the trick I show in the sailplane mix for using the throttle position to activate a logical switch to do it that way. Happy flying!
why do you apply the differential thrust to ailerons in acro mode instead of rudder?
+Jason M you can do either..
+Painless360 interesting i only imagined using it with rudder, curious to learn what the difference in effect is, i'll go do some research. Thanks for making this video opentx is confusing when one is triyng something new, and every new thing i try,you've already posted detailed instructions for :)
If you're asking what the purpose of linking differential thrust with the ailerons, I believe it would be to help deal with adverse yaw
This is awsone but since i have only been doing things from the radio I am completely lost that being said is it possible for this to be done from the radio menu screen sorry I don't know what else to call it I'm a noob
Everything you can do on the radio, you can do in Companion and vice versa. If you are new then check out the Opentx mix school series.. Happy flying
One of the other uses for differential thrust control is when a twin has an engine failure. I've seen a couple of twins crash because the pilot failed to shut or slow the good engine e.g. asymmetric thrust . Is there a way of using telemetry feedback of the engines RPM to control this. E.g. the right engine fails or slows so I need to reduce power in the left, add opposite rudder and add 15 degrees of aileron into the dead engine.
P.S. Yes this has happened to me on a real aircraft :-).
Possibly, you'd need an RPM sensor on each motor and then have a few special functions/logical switches to see when one was 'off' and then maybe change the flight mode to provide the trim needed? Tricky but a fun one to try and figure out. Let me know if you crack it!
Can you please make a video like RedhotPheasant said, that in 10% overrite the mix for diferencial and then both engines will be the same.
That things you need are already covered in some depth in the OpenTX Mix School series. You simply need to use a logical switch to detect when the throttle is below the level you want and then use that 'switch' to turn on the differential lines in the mixer.. Best of luck!
Actually is turn off the diferencial.
ruclips.net/video/beMh_pBKHFg/видео.html
If you are at full throttle and you yaw, does it send more than 100% signal to one of the escs or does it cap it at 2000?
The channel is limited on the radio to whatever you set it to so if you're at the max then yes..
Thanks. I'm writing an arduino sketch that does differential thrust and I want to make sure I'm implementing it in the correct way.
I have an eagle tree vector that I want to use on a twin engine sea plane, but unfortunately the vector does not support differential thrust, so the arduino will intercept the rudder and throttle commands from the vector and mix those into motor commands.
I've just purchased a micro P38 from Banggood that has no rudder but uses throttle differential somewhat in this way. :)
So have I got it right that when you get to full throttle, you will still get one motor slowing down to a max of 30%?
Timothy Smith If you are applying yaw/rudder input yes. The amount of throttle difference is something you need to find on the model by trial and error. There are other ways of doing this - there always are on the Taranis!
Happy flying!