trying to figure out new helix function in NX 8.5 to make conical spring 1

[BOPdesigner]

I am trying to follow John's method here:

http://www.eng-tips.com/viewthread.cfm?qid=324342

to make this conical spring with the updated helix tool in 8.5. But I am getting wrapped around the axle on trying to figure out the ends, which should have a pitch such that the first and last turn of the helix basically cause the tube faces to touch each other. I need the spring to have a specific free length (the length of the spine) and be 7 turns total. 5 turns of constant pitch in between the two end wraps. What settings have I got fouled up here? NX 8.5 part file is attached.

 

[JohnRBaker]

You mean something like this (see attached)?

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[BOPdesigner]

Yes that looks correct, but it is too long. The overall height needs to match the line (spine). I'll have to mess with it some more.