Adaptive Spring Help

[Anonymous]

I have created a spring assembly with 3 parts. I have a coil at either end and a basic coiled extrusion as the body of the spring. I placed the 2 end coils in the assembly first and then created the body coil in the assembly. I used two projected circles (one from each start/end coil) to establish the length of the body coil. I named the driven dimension LENGTH and used LENGTH as the parameter for the coil length and pitch. The coil model generates perfectly but then I am not allowed to drag the ungrounded end coil to "make the spring" longer. However if I supress the body coil and then drag the end coil,  and then unsupress the body coil, the body will adapt. Why can I not get the assembly to function without having to supress the middle coil.

I attached a ZIP file with the assembly files and all the components in the assembly. Any help would greatly be appreciated.

[innovatenate]

Is it possible to use the drive constraint command to get the spring to update in real time? See the below videos for reference.

https://chronicle.autodesk.com/Main/Details/e627c3de-6eb4-4131-b779-19e4f66b1e51

I note the same procedure is used in the youtube video below.

http://www.youtube.com/watch?v=O2XVbE26BNM

I hope this helps. Please keep us updated on your progress.

Thanks,