LDD Pivot Help!

[Mrcool1804]

I need some help. I cannot figure out in LDD how to get this certain system to pivot.

Looking at the above image I am taking the two pivot arms and trying to rotate them downward to a 90deg angle.

I can only get this to work if I remove one of the red (1x2 with stub vertical/end).

This photo shows the second position and shows the piece I had to remove in order for it to work.

Any help from you guys would be awesome! I also attempted to attach the .lxf file too. THANKS!

.lxf File

[AndyC]

Unfortunately this is just one of those things LDD struggles with, because it gets confused about which bits it can and can't move when it forms one big loop. Your best approach is to remove the end piece, rotate the structure into place and then add the deleted piece back in.

Hopefully this is one of those things that may be improved in a future version.

[Superkalle]

Well, actually it should work. But then you need to make sure you've got a good design, and that rotation fix points are secured (just like with real Lego - your truck would actually not hold up very well if you built it with physical Lego). Also, generally all bricks should overlap by at least two studs to further reduce LDD's confusion about which are rotatable axis (for example the red 1x2 modified plates only overlap with one stud on teh white 2x16 plate). In this case it actually won't matter, but it's a good general rule.

Download the attached LXF, click the Technic pin (important) and try to rotate and you will see that it works. But I still have to agree with Andy that there are some special cases where LDD do have a hard time rotating properly. Also note that when you rotate the structure, the other pin will not always "go along", so it's not a perfectly smooth rotation, but it works.

Also, you can try to select the pin once more (click on the inside of it), and then try to rotate, and you will get a different, weird result. Clicking the right rotation point is cruical and can be tricky sometimes.

ItWorks.zip

[Mrcool1804]

SuperKalle you nailed it! By hard attaching that one pivot block and changing out the axles it worked great!

Thanks!