Very nice Gareth. You do nice work. How low did you get the pressure before it stalled toward the end of the clip?

Sammy

PS: as a Yank, I need to look up the bar to psi.

Here it is fully anodised.

I tried to get it to run off steam, but I wasn't able to get enough pressure, I think that I need either a bigger boiler or a decent valve.

After getting annoyed that the steam wouldn't work I connected it to my garden hose. As you can see from the video it leaks like a sieve.

Thanks Tyler. I had an understanding of how the engine works but I used my own dimensions. Mainly due to stock limitations and lack of casting equipment.

Running it on water was quite fun… It is useful for seeing where the leaks are.

I used to have a walking yard sprinkler years ago, it looked like a tractor, I don't recall how the water powered it but I think it was geared to the sprinkler arms to make it walk, it was made out of cast iron fairly heavy thing. Sometimes it would jump off of the garden hose and take a adventure off to places unknown until it ran out of hose or crashed into and obstacle.

A walking sprinkler that looked like an old time steam engine, using the piston to power it would be cool, but probably a lot of work to make.

Hey, it works.  I started one last year that got to about 75% and never got finished.  Maybe when work slacks and the weather cools.  In this part of the country you will sweat through your clothes if you are outside working.  Thanks for the pics and vids.

Regards, Al