Blue Flower

On Saturday 3rd October 2015 an attempt was made to turn the wheel under water power by raising the river level enough to flood the upstream brick floor and allow water to enter the wheel below the metal plate. When the mill was working the river level would have been much higher and water would have fed the wheel from over the top of the metal plate giving the increased power needed to operate the millstones and machinery. It was not known whether the wheel would have enough water to rotate by feeding under the plate, but it would not be practical to raise the river to the original level.

We met at The Maltings where scaffold boards had been nailed together to make interlocking sluice boards that could be slotted into the original sluice slots one by one to allow the river level to rise gradually. These boards were loaded onto the tractor trailer along with tools for removing them afterwards and a chainsaw for trimming them to size. Foam boards and geotextile sheets were also loaded up for the winter protection of the site.

The tractor and trailer led the convoy of family and volunteers to site. A table was set up for cakes and drinks ready for a celebration if the wheel turned. The water wheel bearings were oiled and the wheel was turned manually to ensure it was not at a tight spot to give the best chance of moving under water power. A plank was put across the piers to give easy access to the sluice. Scaffolding from the brickwork gave a platform for putting the boards in place. The first board was put in the sluice and the river rose rapidly and soon a thick weir of water was flowing over the top. The downstream side of the river took longer to recover and a small fish was stranded in the low water so it was rescued. When the level recovered the next plank was put in place, then after a while the third was added.

Video cameras were set up on tripods to cover both sides of the wheel and left running, people were also filming with cameras and phones.

The first boards were bowing under water pressure and when the next board was added there was a gap which allowed water to escape through the weir, giving a longer wait for the level to build up. Gaps between the boards were filled with weeds and pieces of wood to block the worst leaks. The water rose slowly and eventually started to cover the step at the start of the upstream brick floor. We wondered if one more board would be enough as we could see the water needed to rise above the step at the start of the floor, then the brick lip near the wheel, then a slope up before it would flow over and into the wheel. The last purpose made board was put in place and was not quite enough to give the height needed. A spare scaffold board was found, but this was not long enough, however it was long enough to use as a bridge across the piers which meant the original board bridge could be cut down and used for a sluice board. The chainsaw trimmed it to size and it was put in place. The weir was leaking badly now, the top board was thinner so there was a large escape of water and it took a long time to build up but eventually it went over the slope and into the wheel. This small flow was not enough to fill the paddles, it was escaping under the wheel losing more water, so the bridge board was used to cut off the supply of water to prevent loss under the wheel, to be released when the level built up.

While the board was being held in place the wheel suddenly turned a small amount under water power, so the board was removed, the wheel then turned almost a full revolution before stopping at the tight spot, then the paddles fully filled up with water and started the process again. Eventually when it came to the tight spot it would slow down instead of stopping. More oil was put on the bearings and we realised what we thought was a tight spot was actually an out of balance due to the new replacement steel paddles on one side being lighter than the original paddles which had accumulated rust and soil. With the wheel now turning continuously, the delicious cakes were eaten in celebration and it was agreed to get the wheel turning again at some point now we know it can be done. After all the work of applying for the HLF grant, organising contractors, carrying out the physical work on site and all the other obstacles and behind-the-scenes effort, it was agreed that it was all worth it to see the wheel turning under water power. 

Interactive Plan       Gate Frame    Blog 8/10/15