Hi Dragan
thanks for your reply
I looked at the link you gave me, and added a marker to the spline, but when i try to rotate that marker the rotate option is greyed out
The original file is close to 1GB, so i did cut everything from the scene, except the neck and the railclone parts (spline, railclone and chain link)
Can you please have a look at it and maybe you can point me to some info how i do the rotation - like shown with the rollercoaster, inside the link you sent me
Thanks
Uwe