This is a trailed plough we are talking about, so really has three "depth" wheels! One one the land, one in the furrow and one doing a bit behind. The one on the land, has to be moved out in order to stop it lifting the last couple of furrows on the wheel side of the finish, it is spaced to follow the tractor wheel.Most methods of achieving this involve disconnecting the self lift for this run, so plough is wound out on the handle at the end. Some people make a sleeve with a flange at each end, this is placed between the wheel and lift drum, and bolted to both. This retains the self lift.HE is listening! This thread started with land-wheels then drifted into furrow-wheels by mistake. Now it gets personal as if Darth Vader was my father! A depth wheel has just one function and if you choose to put it outside the frame then you must jack it out further for the last run to be guided at a distance on the fluffy stuff you just turned over. Yet, on that last run, you still have some virgin ground as a datum point and a uniform sole furrow to build. Convention shouldn't apply to conventional ploughing.
When did you see your father!