Has anyone else seen this in complex movements?
After switching to posreps, many parts, that should be without motion, are moving back and forth.
I'll agree, that it's far away from nothing. But that's not all, and could be better.
Mp4 file is attached. 2016 files can be provided, if you're interested.
Walter
Walter Holzwarth
Got it now.
Some of the gears can rotate versus the shafts; I've now placed them not in flexible shafts, but in the top-level assembly.
Another issue was better constraining: No free DOFs, but no over-constraining is best.
Walter Holzwarth
Hmm. This whole stuff needs improvement. Triangles instead of +/- symbols in Browser don't really help with that.
I could solve the problems with the gearing at the left. But have a look, what happens with switching to different gearing settings at the crane beam.
It's close to crazy
Walter
Walter Holzwarth
I've struggled the whole day with that. No real problem for retired persons 
I could solve the flipping of the crane beam by temporarily suppressing rotational/transitional movements of the electric cylinders
What do I suspect?
- Rotational joints seem to be more critical in posreps than insert constraints. Sometimes rotational joints get angular settings induced in posreps. I don't know, where they are coming from
- If a main assembly is in a LOD, there's a good chance for locking all setups of driven constraints
- Same behavior seems to caused by a constraint from rotational input to to linear output
It's a challenge for me. Can you do it better, AutoDesk?
Walter
Walter Holzwarth
Another issue can be seen in this video (27 MB).
As can be watched at about 50% time, the worm set can be moved ok by mouse. But no movement is done, when driving the total constraint train.
The rotational/translational constraints of the electric cylinders beneath the beam are suppressed. If unsuppressed, no movement at all is possible.
Walter
Walter Holzwarth
I'm still struggling with this crane. Lots of problems need to be solved or worked around.
Here's another video, recorded with Camtasia from a Studio animation. The red clutch is well constrained, but jumps suddenly at the end of a changing posrep.
Walter
Walter Holzwarth
Late in the evening I have good news, and bad news.
Good news:
- I could run through the first steps of a Studio animation.
Bad news:
- Tasks like this can only be done with Studio. Driving by constraints is locked suddenly by unknown causes, and Dynamic Simulation can't handle that either.
- Even with Studio, I had to freeze the crane subs into a derived part.
- But sad to see, that some part colors got lost in the derived part. I need to look for that, it seems to be caused by color overrides in the parts
- Decals don't appear in derived parts. Well, I could place them again there
- Animated posreps in Studio are no way to go, because some envolved parts are doing uncontrolled jumps
- Rotational/Translational constraints don't work well in many cases
- All parts must be fully constrained, except their needed movements
But now the best:
Trying to create a video, only a small part of the screen was recorded. See picture of the normal screen, when animation runs in Studio. Kamera1 is ok there in view size, but decreases in recording.
And now let's have a look at the video screenshot:
Now it's time for a break. I'm not amused.
Walter Holzwarth
Time goes by. I started another animation, but problems with camera settings and recordings are still present.
- AVI records are crashing
- Large WMF records are crashing the same
- Only image recording of 625 images was possible (25 seconds with 25 images per second). Combining was done with Windows MovieMaker
But: Even I could place some camera settings in Studio timeline-run, they were broken with video recording. I only succeeded in recording a fixed view. Result is attached.
This was no easy task.
- Lots of switching between Studio and Assembly environment were needed, for resetting startup conditions in Studio
- Time and start-end position changes in Studio are tricky
Well, I could solve these issues by lots of trials and errors. But now I'm stuck again with camera settings. Only garbage comes out.
That's hidden in the fixed view record:
- Left door of cabin closes
- 4 outrigger feet move up, together with gear movement
- 4 outrigger feet move inward, together with gear movement
- Crane moves along path, returns and comes back
- While this movement, motor pistons, crank, and differential gearing are moving, too
- Wheels are rotating and changing their steering angles in the turn
This could be much better, with more options in camera setting. I suspect, that this is poor.
But perhaps it's only my lack of skill. I can provide a file set, if anyone likes to improve that result.
Walter
Walter Holzwarth
Good morning, Lisa
Here's the link to a Zip in A360: http://a360.co/2fzWYzK
I've reduced the total size by only using the truck (no crane), but all movements are still there. I didn't try new camera settings by now, but I'll make another attempt later.
At first try this:
- Open the main file and switch to Studio environment. Add all shadows. This must be done each and every time. Next run they are gone again. Same behavior is with shadow percentage, it's always coming back next time with 100%
- Perform a timeline run. It should move now the full period of 25 seconds
- Next, move it back from 25 seconds. It starts ok, but stops in the curve and locks. Nothing can be done
- So you'll need to end Studio and return to assembly environment. Now there's a good chance, that outriggers lost their position versus the chassis. Do that now: Switch all flexible pieds and mavoeuvres (8 instances) off and back on. Position is back after that, but the red cross is lighting. Do a Rebuild all for turning it off
- After that a 2nd timeline run should be possible. Now at 25 seconds, try to move time pointer back to start. No luck. Studio must be ended, procedure above
- Now you're ready for a 3rd run. Let's edit the Drive_me constraint in Studio. I've started with an initial distance from 10 mm to 1810 mm, now it's ending at 2600 mm. I only could get that result by gradually changes of 50 or 60 mm steps. These 2600 mm are near the end of path (Fahrweg.ipt); perhaps this file needs an extension for trying versus 2700 mm
- Next issue: Edit Lenkwellenwinkel (at 15 s). Change end angle from 120 to 150. You can't (The specified value could not be applied)
- Now move this in timeline to about 0,5 s. Change from 120 to 150 can be done. It took some time here for discovering
- Another behavior, perhaps it's my fault: Kurbelwellenwinkel is suppressed in assembly environment. Because of gearing ratio, it needs to move from 0 to -6600 deg during a timeline run. But this value seems to sum up with another run.
All of these problems could be worked around. But I'm whining and grumbling with these camera issues. 
Let's hope for improvements
Walter
Walter Holzwarth
Meanwhile I made a new attempt with the reduced file. This time camera moves were possible.
I completed it with crane, Mountain rambler and LEGO figure.
Heureka! See result.
Walter Holzwarth
Hi Lisa,
I just downloaded the data from A360 to a new folder, but without creating another project.
Studio animation ran forward without error through the whole timeline.
My Playback interval in Animation options is set to 0.1s.
I'll use a new project now. Let's have a look.
Walter Holzwarth
No stop using another project, too.
From 0 to 2.2s there's no movement, just for having a look. At 2.2 s the left door of the driver's cabin starts closing.
Walter Holzwarth
Hi Johnson, thanks for stepping in.
I spent several hours with this crane, and I did switching from flexible to non-flexible and back again not only once.
Tell me, what files are missing, and I'll send them to you.
Walter
Walter Holzwarth
Missing files attached.
From what I've seen, both driving by constraint and Studio animation needs improvement.
Thumbs up. It's not easy.
Walter
Walter Holzwarth
