Hi James/Karsten.
perhaps the photo's will explain what I am trying to achieve.
The nod file I posted previously does not allow for the contact angle the roller makes with the cam.
Due to the fact the helix is a globoid shape the contact angle (slope) is not constant.
My original profiles where constant and perpendicular.
By placing them using mpatharray node the contact angle is correct and the profiles remain constant
but they need to be aligned to the wheel centre and the fact that their spacings are equi distances
along the helix curve (I would need to be able to extract the X Y Z of these points to calculate the alignment )
where as I had generated the helix points by numbers per revolution thus the alignment to the wheel centre was not the issue.
I started to work on calculating the contact angles and then adjusting my profiles to allow for it but think there may be a better way.
Any ideas.
Barry