I had a request for a full engine rig. I though this might be useful to people out there. The videos total an hour and a half so it is long, but I did use a lot of rigging techniques to build the final rig. There is a project download for the engine to work with the videos
Spline IK Bones
Conform Space Warp
Attachment Constraint
Orientation Constraint
Look at Constraint
linking
Wireing all to one helper to control the engine
Enjoy and I hope this helps out some people.
http://www.3dpusher.com/tutorialssearch ... _type=more
