Just Flight Forum Homepage
Forum Home Forum Home > Just Flight Products > VC10 Jetliner
  New Posts New Posts RSS Feed - Bouncing after changing weights
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Bouncing after changing weights

 Post Reply Post Reply
Author
Message
becomuvy View Drop Down
Check-In Staff
Check-In Staff


Joined: 28 Mar 2018
Points: 3
Post Options Post Options   Thanks (0) Thanks(0)   Quote becomuvy Quote  Post ReplyReply Direct Link To This Post Topic: Bouncing after changing weights
    Posted: 28 Mar 2018 at 9:34pm
Hi!

I have a problem: after changing my fuel or weights via default "Fuel and payload" dialog, the plane starts to bounce. This is also happening after landing.

https://www.youtube.com/watch?v=1xGFhh1-VjI

I'm using P3Dv4 and the latest VC-10 SP1.4, but this problem was also present in SP1.2

Back to Top
TheWestGuy View Drop Down
Check-In Staff
Check-In Staff
Avatar

Joined: 13 Apr 2018
Location: DnNTK
Points: 8
Post Options Post Options   Thanks (0) Thanks(0)   Quote TheWestGuy Quote  Post ReplyReply Direct Link To This Post Posted: 13 Apr 2018 at 8:57am
Glad to see I'm not the only one whos having this issue, I believe its a contact point area issue with the config thats not been optimized propperly so I'll be having a look at that later on when I get the chance and optimize it abit more.
Back to Top
Delta558 View Drop Down
First Officer
First Officer

Just Flight FDE Developer

Joined: 10 Jun 2012
Points: 376
Post Options Post Options   Thanks (0) Thanks(0)   Quote Delta558 Quote  Post ReplyReply Direct Link To This Post Posted: 14 Apr 2018 at 12:35am
Very strange - not something I've seen at all through testing and I can't remember it being reported either. I've just made a quick vid of what happens for me going from max AUW to empty payload and 30% fuel:

https://youtu.be/aUb4Cr1ByN4

As you can see, there is no bouncing like you appear to have, just a sedate rise owing to the lesser weight! It's the same going from empty to heavy weight as well, except (obviously) it settles lower.

That was filmed in P3Dv4.2 at the default KJFK airport.
Cheers,
Paul.

Back to Top
TheWestGuy View Drop Down
Check-In Staff
Check-In Staff
Avatar

Joined: 13 Apr 2018
Location: DnNTK
Points: 8
Post Options Post Options   Thanks (0) Thanks(0)   Quote TheWestGuy Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2018 at 7:32am
It's happened to me from the first time I installed it and I've had to literally spend 2 hours editing the aircraft.cfg to prevent it from doing this. I've managed to solve it but now the wheels are slightly sunk into the ground which doesn't bother me concidering it bouncing up and down was 10x annoying.
Back to Top
becomuvy View Drop Down
Check-In Staff
Check-In Staff


Joined: 28 Mar 2018
Points: 3
Post Options Post Options   Thanks (0) Thanks(0)   Quote becomuvy Quote  Post ReplyReply Direct Link To This Post Posted: 24 May 2018 at 1:57pm
Originally posted by TheWestGuy TheWestGuy wrote:

It's happened to me from the first time I installed it and I've had to literally spend 2 hours editing the aircraft.cfg to prevent it from doing this. I've managed to solve it but now the wheels are slightly sunk into the ground which doesn't bother me concidering it bouncing up and down was 10x annoying.

Can you please share your aircraft.cfg or describe which lines should be edited? I don't care about sunken wheels, I just want to get rid of this irritating bouncing.
Back to Top
Willykurtz View Drop Down
Check-In Staff
Check-In Staff


Joined: 26 May 2018
Points: 6
Post Options Post Options   Thanks (0) Thanks(0)   Quote Willykurtz Quote  Post ReplyReply Direct Link To This Post Posted: 26 May 2018 at 8:58am
I have same problem not only on the ground, but in the air too. When my fuel tanks is close to empty plane start bouncing. It'very sadly i hope developers will solve this problem asap.
Back to Top
Willykurtz View Drop Down
Check-In Staff
Check-In Staff


Joined: 26 May 2018
Points: 6
Post Options Post Options   Thanks (0) Thanks(0)   Quote Willykurtz Quote  Post ReplyReply Direct Link To This Post Posted: 29 May 2018 at 5:20pm
Thanks God i find my old version 1.2 and it work fine. I just copy Contact Point from there. Maybe it'll help

[contact_points]

 

 

max_number_of_points =8

 

static_pitch= -1.080

static_cg_height= 11.00

gear_system_type=1      //Hydraulic

tailwheel_lock=0

point.0= 1, 58.690,   0.000, -10.490, 1575, 0, 1.556, 70.0,  1.050, 1.200, 0.635, 10.2, 10.6, 0, 219.9, 250.3

point.1= 1, -8.840, -12.148, -11.490, 1575, 1, 1.893, 0.000, 1.000, 1.500, 0.835, 10.7, 11.9, 2, 219.9, 250.3

point.2= 1, -8.840,  12.148, -11.490, 1575, 2, 1.893, 0.000, 1.000, 1.500, 0.835, 11.1, 12.4, 3, 219.9, 250.3

point.3= 2, -29.000, -60.000, 4.000, 1000, 0, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 5

point.4= 2, -29.000, 60.000, 4.000, 1000, 0, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 6

point.5= 2, -43.000, 0.000, -3.800, 1000, 0, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 9

point.6= 2, -71.000, 0.000, 31.000, 1000, 0, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 9

point.7= 2, 44.000, 0.000, -4.500, 1000, 0, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 4


Back to Top
Delta558 View Drop Down
First Officer
First Officer

Just Flight FDE Developer

Joined: 10 Jun 2012
Points: 376
Post Options Post Options   Thanks (0) Thanks(0)   Quote Delta558 Quote  Post ReplyReply Direct Link To This Post Posted: 29 May 2018 at 7:12pm
Now that is strange - are you saying that those figures fixed it? They are EXACTLY the figures I still have in all four versions of the sim from development. Those are the figures that SHOULD be in place, are you certain that the figures from your download were different?

It would explain why the first video was so different to mine!
Paul.
Back to Top
Willykurtz View Drop Down
Check-In Staff
Check-In Staff


Joined: 26 May 2018
Points: 6
Post Options Post Options   Thanks (0) Thanks(0)   Quote Willykurtz Quote  Post ReplyReply Direct Link To This Post Posted: 29 May 2018 at 10:36pm
I don't know what is the reason of this issue, maybe it's not a contact point, but don't have it with my old vc 1.2 How just look how 1.4 worksCry: https://youtu.be/udUyW0MRseI
Back to Top
Omid View Drop Down
Check-In Staff
Check-In Staff


Joined: 29 Dec 2017
Location: NSW
Points: 19
Post Options Post Options   Thanks (0) Thanks(0)   Quote Omid Quote  Post ReplyReply Direct Link To This Post Posted: 28 Sep 2018 at 2:57am
Hi folks
I'm having the same issue and it's been there since installation.
It's also there without changing weights.
Also  my [contact_points] values are and have always been exactly the same as mentioned above.
Very irritating.....

Regards-Omid
Back to Top
Willykurtz View Drop Down
Check-In Staff
Check-In Staff


Joined: 26 May 2018
Points: 6
Post Options Post Options   Thanks (0) Thanks(0)   Quote Willykurtz Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 2018 at 12:38pm
Maybe you should try open ticket with support section. I think devs don't care about this issue because a lot of people pointed to it. My ticket was just deleted. I just find an old version 1.2 and it seems fine.
Back to Top
Omid View Drop Down
Check-In Staff
Check-In Staff


Joined: 29 Dec 2017
Location: NSW
Points: 19
Post Options Post Options   Thanks (0) Thanks(0)   Quote Omid Quote  Post ReplyReply Direct Link To This Post Posted: 30 Sep 2018 at 2:25pm
Hi Willy
Could you somehow share your aircraft.cfg file from version 1.2   here?
Thanks
Omid
Regards-Omid
Back to Top
Willykurtz View Drop Down
Check-In Staff
Check-In Staff


Joined: 26 May 2018
Points: 6
Post Options Post Options   Thanks (0) Thanks(0)   Quote Willykurtz Quote  Post ReplyReply Direct Link To This Post Posted: 01 Oct 2018 at 7:35am
Ok. But i will be at home 04.10 only.
Back to Top
Omid View Drop Down
Check-In Staff
Check-In Staff


Joined: 29 Dec 2017
Location: NSW
Points: 19
Post Options Post Options   Thanks (0) Thanks(0)   Quote Omid Quote  Post ReplyReply Direct Link To This Post Posted: 02 Oct 2018 at 2:15am
That shouldn't be a problem..
Regards-Omid
Back to Top
Willykurtz View Drop Down
Check-In Staff
Check-In Staff


Joined: 26 May 2018
Points: 6
Post Options Post Options   Thanks (0) Thanks(0)   Quote Willykurtz Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 2018 at 7:00pm
As i promise here a link on aircraft.cfg of "old" version VC-10. https://drive.google.com/open?id=1fPLWi3jOybaaGgou4JznlCp6SG_Ymqc8
Back to Top
Omid View Drop Down
Check-In Staff
Check-In Staff


Joined: 29 Dec 2017
Location: NSW
Points: 19
Post Options Post Options   Thanks (0) Thanks(0)   Quote Omid Quote  Post ReplyReply Direct Link To This Post Posted: 05 Oct 2018 at 3:06am
Thanks mate
I'll give it a go
Regards-Omid
Back to Top
Omid View Drop Down
Check-In Staff
Check-In Staff


Joined: 29 Dec 2017
Location: NSW
Points: 19
Post Options Post Options   Thanks (0) Thanks(0)   Quote Omid Quote  Post ReplyReply Direct Link To This Post Posted: 22 Oct 2018 at 2:43pm
Feedback
The above .CFG file posted by Willy has largely fixed my problem as well as another problem with AP stability and flight dynamics discussed here:
http://forum.justflight.com/forum_posts.asp?TID=31911&title=flight-dynamic-problem
Thank you Willy
Regards-Omid
Back to Top
Christoph4445 View Drop Down
Check-In Staff
Check-In Staff


Joined: 21 Jan 2014
Location: Switzerland
Points: 11
Post Options Post Options   Thanks (0) Thanks(0)   Quote Christoph4445 Quote  Post ReplyReply Direct Link To This Post Posted: 26 Nov 2018 at 10:24pm
I've also had the bouncing problem. Comparing my aircraft.cfg (just bought the plane 4 days ago) with the one that was posted Willykurtz, I think I have found the problem:

The entry "empty_weight_pitch_MOI" read 19115.4 (the new .cfg) vs. 619115.4 (Willykurtz). So the number 6 was missing.
I only changed that and it is a completely different plane now. It has stopped bouncing, it is stable when taxiing and on the runway.

It is a great plane. Looking forward to the updates/the professional version.

Christoph Kuehne
Back to Top
Omid View Drop Down
Check-In Staff
Check-In Staff


Joined: 29 Dec 2017
Location: NSW
Points: 19
Post Options Post Options   Thanks (0) Thanks(0)   Quote Omid Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov 2018 at 1:38am
Well spotted Chris
As I said I didn't get around to comparing the exhaustive text.
Cheers
Regards-Omid
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down