Milkodini hybred

[Peter Lindemann]

Double up for twice the output

This will probably work just fine for only $30.00.
It's a diaphragm bilge pump with a capacity of 12-25 GPM.

Ted,

In standard industrial usage, diaphragm pumps are usually used "back-to-back" so while one pumps, the other resets. The push stroke uses more energy because it is the one that lifts the water up. The pull stroke takes very little power to simply refill the pump chamber. By putting two pumps "back-to-back" each half stroke is a push stroke in one pump and a pull stroke in the other.

Since your Milkodini machine produces equal amounts of force both up and down, using two pumps back-to-back is the only way of harnessing the full power of the machine.

This link goes to a company that sells industrial diaphragm pumps. As you can see, all models are used in the "back-to-back" configuration.

General Application Pumps - NDP Series

I think your little bilge pump is the right one for you to get. Just get two of them and hook them together for twice the output.

Peter

[adam ant]

the Archimedes screw, yes. i have seen these used in propulsion designs as well, they just couldnt get enough thrust out of them to be very useful.

the only reason i mentioned it is because of Ted's current design with the gears. he wouldnt have to modify it too much.

[Ted Ewert]

Here is a nice little dual diaphragm pump, which is what I think you were referring to:
Only 3 GPM's but it has the dual action. And it's only $60.


Those Yamada's are nice, but they run on air.
The bilge pump can also be a double action pump depending on how it's rigged. If you have a 5 foot draw, and then a 5 foot vertical push, it's doing the same amount of work on each stroke.
We'll see how the next machine runs and then decide.

Ted

[Peter Lindemann]

Stick with the other pump

Here is a nice little dual diaphragm pump, which is what I think you were referring to:
Only 3 GPM's but it has the dual action. And it's only $60.


Those Yamada's are nice, but they run on air.
The bilge pump can also be a double action pump depending on how it's rigged. If you have a 5 foot draw, and then a 5 foot vertical push, it's doing the same amount of work on each stroke.
We'll see how the next machine runs and then decide.

Ted

Ted,

The other pump with the 12-25 GPM rating is the better unit. Just get two of them. Your Milkodini Machine has plenty of power to drive two of these. If you can lift 25 gallons of water a minute 6 feet above the unit, that is more than enough energy to keep the wheel turning. You've already proved it will turn for only 7.5 watts input!!

This is a very interesting path to take and I am fascinated to see where you go with this.

Peter