 The wheel is of the overshot type—the largest such wheel in Sussex—weighs around , has a diameter of and can rotate at between 8 and 15 revolutions per minute depending on water flow.Despite its scale and the difficulty of many of the tasks, the restoration was carried out almost entirely by volunteers working mostly at weekends.Some unemployed people enrolled in a job creation programme were briefly used, but no professional engineers, construction personnel or other qualified workers were employed at any time during the eight-year process.