Same rules apply for the combination with internal hubs!

For a combination with a Rohloff hub (not recommended by Rohloff, as torque coming from the mountain-drive can exceed limitation of entry torque of the Rohloff hub) best to use the 10 mm longer axle in addtion with wider cone rings on the left as well as on the right side. This is not necessary on bikes with long distances from bottom bracket to rear axle such as most recumbents.