I reply for those who would like to know how to place a helix in their tracks
You have a very useful and magic thing in rollercoasters building panel which is named "Banked turns" lol You can bank on the left, but you can also bank on the right too! (amasing isn't it?)
In order to place an helix along your track, you need to bank the last piece of the rails in order to place a left or right banked turn... That's only after having placed a banked rail piece that you can place a helix.
If someone need more info about coaster making, follow the RCT3 tutorials included in the game. It can help.
Regards
