OpenTx Snippet • Elevator and Flap Mix
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- Опубліковано 8 лют 2025
- OpenTx Snippets are a new series for 2021. These videos are intended to be short and focused on answering the most common questions I receive on OpenTx.
In this OpenTx Snippet I'll show you how to mix elevator and flaps to help eliminate pitch up during deployment of flaps.
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This is exactly how I set up my elevator to flap mix. I think I used your videos a while back to learn how to do this! After I got better with opentx, I added global variables. I used one of the extra trim switches to change the value for GV1. Then I changed weight and offset to GV1 or -GV1 depending on what it needed. This allows me to adjust the flap to elevator mix in the air during the maiden.
Nice. Good tip.
@@RCVideoReviews new to opentx here, what u just explained makes no sense to me lol a video will be very helpful
I have my Arrow bigfoot set now.Delayed/slowed flaps and i was able to mix delayed/slowed elevator as well.thx John.I am learning a ton from all your videos.
Happy to hear it Sean.
Thank you so much for all the super informative videos. I’d honestly be lost without them.
Very glad to help. Thank you for the kind comment.
just got my tx16s and you are a lifesaver :D
This is very useful information. Thanks for making it brief, simple, and easy to understand.
You're very welcome!
Thanks for the snippets John. Keep them coming. This Old Airplane Guy is learning alot from your videos!
You bet! On it!
Thanks so much for this, it totally cleared up the confusion i had about mixing on my tx16s. These tutorials are incredibly helpful.
Glad to help!
Hi John
This is gold helped me solve my prop
Good! Glad to know it helped.
I was so focused on source being my SE switch. I didnt realize a little further down the page i could set the switch position to just the landing flaps(like i wanted).Now i have elevator mix on landing flaps only.The simplest thing eluded me for a week...lol
OpenTx is like Chess. Takes an hour to learn and years to master. I learn something new on this radio regularly.
Thank you soo much for your videos, they have helped me a lot! I don't have anyone else in my family to learn from - ❤
Glad to help. I think I saw you hanging out on discord...don't be afraid to pop in there if you need help with anything. Great group of people on our discord server.
@@RCVideoReviews Thank you!
Thank you, quick and to the point. Got me sorted out in no time
You're welcome!
Perfect explanation thank u👌🏻✈️✈️
You are welcome!
Thanks a lot. It's simple and clear.
Welcome 👍
brilliant many thanks.
No worries!
Thanks for video showing how to add down elevator when using slider for flap. An interesting difference on my monitor is I have flap (at 50%) going half + and half - but your screen shows one side only working at 50%. Why is mine showing different, am I doing something wrong. My t/x is a Jumper T18.
Thanks man, that was very helpful 🙂
Glad to hear it!
Thanks so much perfect.
Happy to help!
Great. Thank you so much.
You are welcome!
Thanks for video. I've an issue. The mix Is ok but elevator travel Is no more equal for positive and negative escursion. The offset and Weigth subtract travel from pitch up elevator. Any suggestion? Thanks
Cool & nice, thank you.
You're very welcome.
Thanks, this made it super simple. Just for anyone else don't be a moron like me and use the input screen instead of the mix screen... its always something really obvious...
Yeah, mixes and inputs cause some confusion out there.
I'm sorry to be so needy. I'm new to the TX16s and EdgeTX. Thanks to your videos, I have set up 4 planes some with flaps. Suddenly I have a power glider that has only ailerons, motor, and elevators. I set up my Excalibur using the EdgeTX wizard. I chose V tail with two separate servos. Only one elevator servo works. How can I fix this?
So the flap offset for the elevator was 5% yet the actual deflection was 10%. Is that correct?
Many many thanks.
That was so very helpful.
I don't however " get" the Offset bit.
I understand the weights that is the servo throw but what are we offsetting?
Sorry I am such a dummy.
Peter
Offset just moves the entire curve up or down in relation to the origin (0,0)
Thank you for this. Great info. If I slow down the flaps let's say 2 seconds, do these 2 seconds carry over to the elevator? Or do I also have to set elevator slow down (2 sec) in the shown mix?
Yes. Try it--make an exaggerated mix--like 100% and apply it over time. You can experiment with stuff like this to learn.
@@RCVideoReviews Thanks, I just experimented. The elevator mix also needs the 2 sec slow down.
Ahhh, I think I understand your question better. Applying a slow down on one mix line will not impact movement on another mix line. i.e. Ch6=Flaps with 2s delay will not slow Ch2 ELE + FLAPS. You also have to add your 2s delay to the flaps entry on the Ch2 mix.
In any case, don't be afraid to experiment. That's how I learn all this stuff.
Thanks. I have been trying to figure this out. Question. For no flaps, what should my elevator values be. For some reason I'm getting 10% down.
If by no flaps you mean flaps at 0, if you're still getting elevator movement, I would suggest removing the mix first to see if the elevator changes. If there is 0 flaps, there should be 0 mix to the elevator.
It sounds like you might have some trim or outputs trim if the flaps aren't mixing but you still have 10% down.
@@RCVideoReviews I think so. I guess I meant when the flaps are level (parked). I may have missed something. I'll watch your video again. Love your videos by the way.
Ele labelled ail2? or am I nuts
How can I do a gear to gear mix??
Is there a way to trim only the elevator while in flight on this mix while the flaps are down?
Use Flight Modes. Use the same switch for a flight mode as you do for your flaps. In your flight mode use FM0 + FMx trim for elevator only.
then the trim go back to normal when the flaps are back up.
That's the very nature of flight modes. Watch this: ua-cam.com/video/BcH3uIiVv40/v-deo.html
I can't get my elevator trim to move its permanently down on trim so if I trim up or down nothing moves I noticed all my trims are brown but elevator trim is yellow any ideas
Create a brand new model. Don’t use a copy or the wizard. See if it does the same thing.
What is the difference between insert before and insert after?
Insert After places the next line after the current line. Insert before places the next line before the current line.
Im guessing it would be the same process if you had flaps on a switch, just the source being the switch?
Yes, the logic is the same. You may want to look at the delay video I just posted so you can slow the deployment of flaps if you use a switch. Since I normally use the slider for flaps, I generally don't worry about deployment speed because I can control speed with the slider. ua-cam.com/video/SOT6wAuZLVU/v-deo.html
@@RCVideoReviews I already did that, but it seems that only one flap setting actually effects the elevator, they are both set up the same, just different switch positions and values. Any ideas?
@@adamrupsis3390 I just built this mix in Companion and it works fine:
Ch2 I2:Ele Weight 100%
Ch2 Line 2: Source SA, Weight 10%, Offset 10%, Slow (u3:d3)
With that setup, when I move SA from Up to Mid the Elevator moves up slowly 10%. When I moved SA from Mid to Down, the Elevator moves up another 10% slowly.
Great video! Question... new to otx, noting that most folks when they set up flaps don’t do an flap input, they just go straight to mix/and define source with no input. Even wizard sets up this way? Is a flap input unnecessary?
Totally unnecessary. This might help: ua-cam.com/video/WmnZM5veAiE/v-deo.html
Bottom line, if you don't expect a need to change rates/expo, you can bypass Inputs, but, you don't HAVE to bypass inputs. If you like things to be consistent, you can put all your controls on the inputs tab. For me, the only thing I would generally say "needs" to be on inputs are primary control surfaces for which you have or may want dual/triple rates or any other thing that you want to be able to modify before it is 'mixed'.
Thank you!