For a project I am looking for a cheap consumer water hydraulic driven
mechanism such as a water driven impeller or water hydraulic cylinder.

I have been thinking along the lines of those lawn sprinklers that
slowly sweep a spray back and forth. I guess they contain some kind of
water impeller but perhaps a little lightweight for my purposes.

Can anybody here think of someplace they have seen a water powered
impeller or cylinder in a cheap commercial application. I can then buy
the item and cannibalize it for the mechanism.

A water meter?

I think some water softeners use the mains water to make them work too.

Sparks...

"Peter" wrote in message
For a project I am looking for a cheap consumer water hydraulic driven
mechanism such as a water driven impeller or water hydraulic cylinder.

What about those cheapo pumps you power with your electric drill? In
reverse of course.

Dave

In article ,
Peter writes:
For a project I am looking for a cheap consumer water hydraulic driven
mechanism such as a water driven impeller or water hydraulic cylinder.

There's a car wash brush for fitting to pressure washers,
which uses the pressure to spin the middle section of the brush.

--
Andrew Gabriel

Water meters use a nutating disk, not an impeller. Good accuracy, but
negligible torque available.

There's a car wash brush for fitting to pressure washers,
which uses the pressure to spin the middle section of the brush.

Ah, that sounds about right as there is clearly enough torque to
rotate the brush.

In article ,
Peter writes:
There's a car wash brush for fitting to pressure washers,
which uses the pressure to spin the middle section of the brush.

Ah, that sounds about right as there is clearly enough torque to
rotate the brush.

Only just, and thats after gearing down the revs (and hence
up the torque). I doubt there's more than a couple of Watts
power driving the brush, which is pretty bad going considering
there's 1600W pumping the water in the first place.

--
Andrew Gabriel