create 3d path with constant elevation

[Anonymous]

I'm designing something like a rollercoaster for steel balls. I draw an spline, then elevate each point to desired height, but I prefeer not to do it "at sight", I want to know if there are any way to select start_Z and end_Z for an spline with several points and take a constant degree downhill.

[etfrench]

1. On sketch one draw a line at the desired elevation angle.
2. Create a Plane at Angle using the above line as input.
3. Create a sketch on the plane.
4. Draw the spline on the plane.

[Anonymous]

Thanks for your reply, but it doesn't work: if the payh is U shape, for example, start point and end point should be at same level. Path isn't in a plane, path also could pass below itself.

[TrippyLighting]

In that case you might simply need more than one plane and maybe a few construction planes to serve as axis for construction planes.

[etfrench]

Here is a convoluted way of generating planes with a constant elevation.  Perhaps you can find a way to use it.

[davebYYPCU]

As long as the horizontal spline continues to radiate from the centre, you can do a reasonable job with a conical ramp, and project to surface for the Path.

[Anonymous]

thanks, I'll check those solutions

[chrisplyler]

https://knowledge.autodesk.com/community/screencast/96206c56-dc8d-40ac-b444-6aca4db06e4f