They often run late so don't be supprised if those times are aprox, also if you can get it on an uphill climb it's be staeming harder, so more smoke/steam usually. Wayne
You can always drive over this way from B'Mouth though. The steam train runs from Norden to Swanage on a regular timetable, and there's plenty of places to catch it, not forgetting the other togging opportunities over this way: Corfe Castle, Swanage itself, Lulworth Cove, Durdle door, Stair Hole, plus more landscaping that you can shake a stick at.