Project

Water-powered saw

A large waterwheel project built at a family cottage.

A water-powered saw

The finished water-powered saw beside a stream

I have spent many summers building increasingly large and intricate waterwheels in a stream by my family’s cottage. This summer was no different—except that it would be a lot larger and a lot more powerful. Instead of making the waterwheel in the stream, I brought the stream to the waterwheel.

Foundation

For the scope of the project, it required a proper, sturdy foundation. That became the start of the platform.

First stage of the waterwheel platform foundation
Waterwheel platform foundation under construction Completed timber structure for the waterwheel platform

The stage is complete

The stage was ready for the actual waterwheel.

Completed stage ready for a waterwheel

Origin of the waterwheel

My grandfather had many old bikes, and I was free to choose any of them for transformation.

Old bicycle chosen as the basis for the waterwheel

I only needed the rear, so the front was cut off.

Bicycle frame cut in half for the waterwheel

I realized that the tire could be cut into segments that would work as fins.

Single tire segment used as a waterwheel fin

And so the waterwheel was complete.

Completed bicycle-based waterwheel

Source of water

I was not the first person to build a waterwheel in this stream, and that was fortunate: earlier builders had left behind a few small water hoses and one very large one. For many reasons, I settled on a smaller hose.

Water hoses used to supply the waterwheel

After dragging one end of the hose about 100 metres up the stream, with a 7–10 metre incline, and getting the water moving through it, I had a good water source.

Water flowing from the hose to power the project

The saw

After a few failed ideas, I settled on a wheel-based, rail-guided platform.

Base of the rail-guided saw platform

An important idea was that the saw should fall onto the wood, so it could theoretically cut through something thick.

Saw platform in raised position

The platform has two joints: one for the saw and one for the connection to the bicycle pedal.

Saw platform lowered onto wood

The finished project

Finally, I put it all together. As anyone who has worked on a problem will know, there were a few hiccups.