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Help Twisting or Creating a Parallel 3d Spline

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Jaynen

Automotive
Feb 17, 2004
21
Im trying to build a rollercoaster in solid works. I got the track spline made but now i need to make a banking spline. The banking spline needs to always 1 meter away from the track spline. I have tried using the twist option but the problem is the twist option is linear. For example if twisting linear from 0 to 45 degress it will be a consistant twist like for every foot its 1 degree untill it hits 45 degress. Is there anyway i can do a twist that non linear. Ideally i want to control the roll by accelleration. Any ideas?
 
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