Truck trailer odd behavior (shaking, jumping, etc)

[Tut]

Hello,
I am currently tweaking the truck trailer preset after reading this post: viewtopic.php?f=2&t=124&p=762&hilit=trailer#p762
Sadly nothing seemed to resolve my issues. I kept running into more issues. I'm not sure why that is.
https://streamable.com/ie9qq9

[Tut]

It looks like I've been able to resolve the shakiness of the trailers when making very sharp turns, by fiddling with the stiffness value. A lower value (e.g 2000) caused it to start shaking a lot.

The suspension jumping (where the rear extra-wheel's were jumping half of their height into the air at higher speeds) seems to be resolved by increasing the Suspension Length value a bit but not too much. The only thing i'm missing is a less stiff suspension to not be so jerky on uneven terrain, but I'm definitely glad that the shaking issues are more or less resolved now.
Any advise is appreciated!

[Patrik Martin]

It looks like I've been able to resolve the shakiness of the trailers when making very sharp turns, by fiddling with the stiffness value. A lower value (e.g 2000) caused it to start shaking a lot.

The suspension jumping (where the rear extra-wheel's were jumping half of their height into the air at higher speeds) seems to be resolved by increasing the Suspension Length value a bit but not too much. The only thing i'm missing is a less stiff suspension to not be so jerky on uneven terrain, but I'm definitely glad that the shaking issues are more or less resolved now.
Any advise is appreciated!

Raise the Mass Multiplier to something like 10. That should solve the issue for you with the swaying trailer.

[Tut]

Thanks Patrick.

Increasing mass helped a lot. I have had a read here: https://craftanimations.com/manual/cds-tools/trailer/ and it looks like the trailer is set up accordingly. I'm getting some shaking when the trailer is moving, especially when reversing. I'm unsure what's causing it. It reminds me of games where there's low synch rate for trailers, causing them to lagg severely like in this case:
https://streamable.com/aiqdru

[Tut]

I'm sorry for double posting this much. I believe there's a forum setting which prevents users from editing after half an hour or so.

Anyway, here's one more shot of the shakiness. I have just made sure that all trailer wheels share same scale. The second trailer is a copy of the first. The front axle is trailer wheels, while the rear axle is extra wheels. The two trailers share identical settings. The truck and the trailers aren't identical in terms of mass and suspension, but I don't think that's a contributing factor.
https://streamable.com/00dy5r

[Tut]

I have decided to disable suspension of both trailers. The scene is a highway without much change in level, so I don't think the trailer suspension is going to help that much anyway.

The issue seems to be occuring when I have multiple trailers. With just one trailer I haven't had any significant issues. I've also plugged in my new Xbox controller which works fine. I read some posts of people having bad experience, but I just had to pull it to the right instead of left when detecting the steering, and it configured correctly. Very impressive overall.

[Patrik Martin]

Hi Tut,

Can you please send me a scene were you are facing this issue so I can have a look at it?

Thanks

[Tut]

Hi Tut,

Can you please send me a scene were you are facing this issue so I can have a look at it?

Thanks

Thanks. I see about exporting it next week!

[Tut]

Hi Tut,

Can you please send me a scene were you are facing this issue so I can have a look at it?

Thanks

Hey again, I have saved the scene to Max 2018 through 2021. I've simulated the truck and trailers to get the error to show (roughly 1000 frames). I've also exported the profiles for every asset in case it doesn't save with the Max scene.
https://mega.nz/file/D3Rk0SwA

[Patrik Martin]

Hi Tut,

Can you please send me a scene were you are facing this issue so I can have a look at it?

Thanks

Hey again, I have saved the scene to Max 2018 through 2021. I've simulated the truck and trailers to get the error to show (roughly 1000 frames). I've also exported the profiles for every asset in case it doesn't save with the Max scene.
https://mega.nz/file/D3Rk0SwA

Seems like there is a key required to be able to download. Are you to send this as a message or via email?

[Tut]

Seems like there is a key required to be able to download. Are you to send this as a message or via email?

Thanks! I have sent a forum PM your way

[Patrik Martin]

We can confirm that we have found a shaking issue with the Trailer tool. It seems to be worse the more detailed the terrain the trailer is attached to is.
We are looking in to this problem asap and solve.

[Tut]

We can confirm that we have found a shaking issue with the Trailer tool. It seems to be worse the more detailed the terrain the trailer is attached to is.
We are looking in to this problem asap and solve.

Thank you so much!!

[dv2000]

Will there be a new update fixing this shakiness any time soon? Thanks

[Patrik Martin]

Will there be a new update fixing this shakiness any time soon? Thanks

We hope so to be able to ship a fix for this within 2 weeks.