J V R Posted April 21, 2014 Share Posted April 21, 2014 I have a couple of planes set up with either flaps or flaperons on a 3 position switch and I keep getting a strange movement or a bounce at the bottom of the flap movement. Is it me when I make the mix on CX9 or do I have a problem with my Taranis. I have uploaded a couple of videos to the Bucket and if I have done the correct linking you will see the bounce at the end of the stroke **LINK** Quote Link to comment Share on other sites More sharing options...
Bob Cotsford Posted April 21, 2014 Share Posted April 21, 2014 I can't see the video but I have experienced bounce or overshooting with some brands of servo when moving them fast - as in flicking a stick which is similar to using a switch. If I move the stick at normal rate they follow the movement smoothly, so I would suggest slowing down the servo action even if only by 0.2 second and see if that fixes the problem. Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted April 21, 2014 Share Posted April 21, 2014 Wow! That's amazing. I take it the actual model does it as well - not just C9X? I can see a little bit of your mixer programming behind the Tx simulation. One thing I would say - and I'm not saying this is the problem but I have had a few strange things happen when doing this - be very careful about whether you specify an input as a channel rather than a stick. So using CH4 as the input to a second aileron channel works fine 99% of the time - but under some circumstances, like if you are using differential, it really screws up! You need to use AIL as the input in the CH5 mix. Now as I say whether this is part of your problem I don't know TBH - but it might be worth straightening out first to see if the effect is still there. BEB Quote Link to comment Share on other sites More sharing options...
J V R Posted April 21, 2014 Author Share Posted April 21, 2014 Hi bob Hopefully this idea from Pete B will work & you will see the video. BEB I will post the mix shortly, at the moment I have multiple windows open on my PC trying to embed one of the video's that I have on Photo Bucket Edited By Pete B - Moderator on 21/04/2014 23:01:35 Quote Link to comment Share on other sites More sharing options...
J V R Posted April 21, 2014 Author Share Posted April 21, 2014 Quote Link to comment Share on other sites More sharing options...
J V R Posted April 21, 2014 Author Share Posted April 21, 2014 One of the short video's of the flaperons Edited By Pete B - Moderator on 21/04/2014 23:02:57 Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted April 21, 2014 Share Posted April 21, 2014 JVR, I'll PM you an email address, can you send a copy of the eeep file? Then I can have a look - no promises but the problem looks interesting! BEB Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted April 21, 2014 Share Posted April 21, 2014 OK got the file - which model should I look at? BEB PS OK Prankster - amazing mine does the same - I'll have a look around Edited By Biggles' Elder Brother - Moderator on 21/04/2014 22:56:52 Quote Link to comment Share on other sites More sharing options...
J V R Posted April 21, 2014 Author Share Posted April 21, 2014 BEB I followed one of Scott page's videos on the other '' forum'' and got an even more exaggerated effect on the elv using a slider to control the down mix to compensate the lift made by the flaperons so I deleted that one and put the elv mix on a switch Jan............ Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted April 21, 2014 Share Posted April 21, 2014 Well the first thing I've noticed is that if you change all the delays to 1 sec - up and down on both settings of the flaps and the effect goes away. BEB Quote Link to comment Share on other sites More sharing options...
J V R Posted April 21, 2014 Author Share Posted April 21, 2014 Thats good news BEB, I used a long delay to lessen the effect of extra lift caused by the flaps Jan........... Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted April 21, 2014 Share Posted April 21, 2014 OK it happens when ever the down slowing is more than the up slowing no matter by how much. Its also bigger the bigger the slowing It only effects the second step - never the first Off to try some other stuff BEB Quote Link to comment Share on other sites More sharing options...
J V R Posted April 21, 2014 Author Share Posted April 21, 2014 Yes that's correct with my fun cub, its the second stage that behaves badly Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted April 21, 2014 Share Posted April 21, 2014 Oh - if you make the up slower than the down - the bounce happens at the start of the movement - not the end! BEB Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted April 21, 2014 Share Posted April 21, 2014 It still happens if you delete the down elevator mix so its not that BEB Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted April 21, 2014 Share Posted April 21, 2014 Ah - if you delete the intermediate step - so you just have full flaps down with SB down - it doesn't happen. Let's see what happens if we have three steps instead of two... BEB Quote Link to comment Share on other sites More sharing options...
J V R Posted April 21, 2014 Author Share Posted April 21, 2014 Strange.......... Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted April 21, 2014 Share Posted April 21, 2014 OK - putting a third flap stage on SC- set to 60 - it didn't show the bounce at the third stage - but its still there at the second stage. Putting stage one flaps on SB- then stage two on SC- and no bounce on either So it only happens when the down and the up slowing are different and the multi-stages are on one switch. Otherwise it doesn't happen BEB Quote Link to comment Share on other sites More sharing options...
J V R Posted April 21, 2014 Author Share Posted April 21, 2014 So is it a fault with the transmitter ? or a bug that needs sorting out ?. I would have thought that if you have switches with multi positions & the ability to slow up and down movements you should be able to do it from one switch. Thanks for the work you are doing BEB. Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted April 21, 2014 Share Posted April 21, 2014 OK - a bit of a breakthrough. If you make the first stage movement have the same speed up and down, then even with the second stage having different speeds it works fine. What you can't do, without getting the "wiggle", is have the first stage at different up and down speeds - unless you put them on separate switches! I don't know why! That's a job for tomorrow! If first and second stages have the same up and down speed again no wiggle I have emailed an altered eeep file back that doesn't show the effect - that's done by setting the first stage flaps to the same up and down speed. Hope that at least helps for now! BEB Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted April 21, 2014 Share Posted April 21, 2014 yes - at first glance it would look like a bug - albeit a very small one! But its at least reassuring that it shows in both the simulator and on the Tx! If it was only in one it would be a bit of pain! Tomorrow I'll have a look in the wiki on the OpenTx forum to see if anyone else has noticed this. BEB Edited By Biggles' Elder Brother - Moderator on 21/04/2014 23:47:20 Quote Link to comment Share on other sites More sharing options...
J V R Posted April 21, 2014 Author Share Posted April 21, 2014 Well done, Thank you for your time and effort Jan........... Quote Link to comment Share on other sites More sharing options...
Bob Cotsford Posted April 22, 2014 Share Posted April 22, 2014 I don't know why but I still can't see anything other than a rotating buffering indicator Linux Mint, Firefox. Can I suggest you post your findings on the OpenTx forum as a bug report? Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted April 22, 2014 Share Posted April 22, 2014 I've put a query up in OpenTx - lets see if any of the guru's there have seen this before! BEB Quote Link to comment Share on other sites More sharing options...
J V R Posted April 22, 2014 Author Share Posted April 22, 2014 BEB I have sent you a PM Quote Link to comment Share on other sites More sharing options...
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