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Scratchy Drawing

09/25/2014 3:15 PM

I tried to construct this based on the image shown on the new home page. I found that the crank gets hard to turn as it fills with water. and I had a hard time deciding if the sleeve should turn with the screw or be stationary.

I think it might need some kind of bearing over by the crank.

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#1

Re: Scratchy Drawing

09/25/2014 3:20 PM

Have you spoken with the original designer about his intent?

"I found that the crank gets hard to turn as it fills with water." Isn't that called 'Work'?

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#3
In reply to #1

Re: Scratchy Drawing

09/25/2014 3:32 PM

I tried and was told "Archie" had passed away. Anyway, it is hard to hold up with the weight of the water so it doesn't scrape on the water trough. And you cant let go of the handle because it will spin backwards and catch you in the package.

"Work" is what makes it hard to turn that generator at the museum of science and industry when the light bulb is connected.

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#4
In reply to #3

Re: Scratchy Drawing

09/25/2014 3:33 PM

You should go into management, then you can delegate this "Work"

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#6
In reply to #4

Re: Scratchy Drawing

09/25/2014 4:03 PM

You know, I tried that and every time I tried to show people how to do something, I would turn around and everybody would be gone. Especially sales people.

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#8
In reply to #6

Re: Scratchy Drawing

09/25/2014 4:54 PM

Another think about sales people that you work with, when they take you out to eat, they tend to disappear just before the check comes out

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#2

Re: Scratchy Drawing

09/25/2014 3:27 PM

Make it shorter.... and then make a second one to make up the difference.

Try that, if its still too hard, make both shorter and then make up a third to make up the difference.

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#5

Re: Scratchy Drawing

09/25/2014 4:00 PM

In mechanical schematics a box (square or rectangular) with an X in it from corner to corner of the box represent a bearing.

I wonder if the square with an X in it in the diagram is meant to be the bearing? If so, I would also expect one on the opposite (top) side of the shaft as well.

Furthermore, this is a cross section drawing so perhaps something was omitted as it doesn't show up in the cross section. And keep in mind, this doesn't look like a drawing meant to build from, but a sketch to show a concept.

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#7
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Re: Scratchy Drawing

09/25/2014 4:13 PM

NOW you tell me, Luckily I kept the size to a 24" tube.

I also found that an Archimedes Screw will pump carp as well as water.

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#19
In reply to #5

Re: Scratchy Drawing

09/26/2014 9:28 AM

It is the wedge of a ratchet, so the crank won't turn back and hit you in the chin.

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#9

Re: Scratchy Drawing

09/25/2014 5:34 PM

I like Scratchy Drawings,

Here's one of my favorites from MSHA:

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#10

Re: Scratchy Drawing

09/25/2014 6:05 PM

The sleeve should turn with the screw. Should be sealed to it.

No leakage and much less friction.

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#11

Re: Scratchy Drawing

09/25/2014 6:15 PM
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#20
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Re: Scratchy Drawing

09/26/2014 9:57 AM

SolarEagle,

Nice, could you make it scratchy?

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#22
In reply to #20

Re: Scratchy Drawing

09/26/2014 10:42 AM

There you go.

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#26
In reply to #22

Re: Scratchy Drawing

09/26/2014 11:15 AM

I found a two stage wind powered version:

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#12

Re: Scratchy Drawing

09/26/2014 2:22 AM

It is might be hard to understand how this works, but in our kindergarden's mud pit this construction is the hit and works perfect to create a perfect mud! It has just bearings made from a tube with a different diameter. If turning gets difficult a bit of sand grinds the bearing a bit wider and the fun continues!

The sketchy blue design a bit down in the comments - is a bit against the ideas from "Archie". This will not work perfectly as the end of the spiral tube will come out of the water so the screw will "srew-up" and drain itself.

The kids understand even this. Not enough water in the pool - they go for the swing and the screw is totally uninteresting - they got the idea might be with mother's milk...

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#30
In reply to #12

Re: Scratchy Drawing

09/26/2014 2:54 PM

My assistant will demonstrate....it does in fact work...

https://www.youtube.com/watch?v=NsAd7SlCpZ0

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#32
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Re: Scratchy Drawing

09/26/2014 7:12 PM

For perpetual water pumping you need to attach the Archimedes sphere....

https://www.youtube.com/watch?v=DqDJAPpAlTg

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#13

Re: Scratchy Drawing

09/26/2014 3:31 AM

The unit you show is almost correct. We use this type of Pump to move many thousands gallons of water from fields in the mid-west each spring. If you where to look at Rex or one of the other companies catalogs for screw conveyors you will see many of the parts we use to fab these units up. Lower bearings are usually a plastic nylon or such. Good luck. Oh! by the way it takes quite a bit of HP to turn a loaded screw. So by hand not such a good thing.

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#21
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Re: Scratchy Drawing

09/26/2014 10:01 AM

I watch them pumping water and carp from the canals into the fields in the spring.

The City of New Orleans uses some very big and very old (wooden) versions to pump not enough water.

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#14

Re: Scratchy Drawing

09/26/2014 3:55 AM

The 'sky bearing' at the top should be firmly attached to the sky.
This is very difficult of course. A solid backboard should be nailed to the sky first and the bearing fixed to that... much easier.

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#15
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Re: Scratchy Drawing

09/26/2014 4:49 AM

Del lives in Harlow, England which is almost always covered in very thick cloud and where nails work fine. If you live in a climate where the sky is blue, your nails will fall out of the sky. You might get better results by gluing and screwing the backboard to the sky.

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#18
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Re: Scratchy Drawing

09/26/2014 9:27 AM

That would explain the "Shower of arrows"

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#16

Re: Scratchy Drawing

09/26/2014 9:16 AM

Off set the crank handle with gears and a chain enough to put a water wheel on it. The water dropping from the output would reduce some of the labor. You work out the mechanic just right you may have a perpetual water pump. LOL

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#17
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Re: Scratchy Drawing

09/26/2014 9:20 AM

perpetual water pump

put a water wheel on the outlet so it'll drive itself....

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#23
In reply to #17

Re: Scratchy Drawing

09/26/2014 10:47 AM

What are we playing Dwarf Fortress here?

(For the non-gamers, in Dwarf Fortress, one water wheel generates 10 units of power when water is flowing under it. it takes 1 unit of power to run a pump that pumps water up 1 level, so a water wheel powering a pump to pump its own catch basin back into its own supply basin has a net of 9 units of energy for other uses. The system is called the 'Dwarven Nuclear Reactor' by the players.)

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#24
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Re: Scratchy Drawing

09/26/2014 11:03 AM

Dwarf Fortress

I must of been sick that day when it was covered in physics

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#27
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Re: Scratchy Drawing

09/26/2014 12:35 PM

It's a computer game, with some wacky physics.

You can drop 10 gallons of water down a dry shaft and hafe 15 gallons of water hit the bottom, water wheels generate more power from water moving past them than it takes to lift the water up to refill the water wheel's source basin, and you could have several thousand tons of rock supported by a single column of soap (as in Dove or Ivory) a mere three feet across, or have those several thousand tons suspended in midair, not falling because a single wooden drawbridge is touching the side. And when you remove that column or lift that drawbridge, all that solid rock instantly turns into loose rubble as it falls.

it's an interesting game, and really leads the players down some twisted paths of creating needlessly complex devices to torture the goblin invaders, or even the dwarven heroes. Well, it doesn't specifically LEAD the players there, it's a 'survival/sandbox' type of game. Players just seem to naturally gravitate to 'let's see how high we can drop this goblin captive from.' or 'can we make a trap setup that leads the gobins back and forth over the same spike trap again and again, and will they finally wise up and quit walking over that spot?'

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#28
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Re: Scratchy Drawing

09/26/2014 12:42 PM

I think some of the players brought that up as questions here on CR4.

Does that game have anything about brown gas?

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#29
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Re: Scratchy Drawing

09/26/2014 2:39 PM

Not brown gas, but anything that rots produces a small 'explosion' of 'miasma' when it decomposes. Miasma is bad, it can cause disease and it produces 'unhappy thoughts' in any dwarf who walks through it.

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#31
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Re: Scratchy Drawing

09/26/2014 4:25 PM

I think I know what your talking about.... I experienced that in a crowded elevator once.

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#25
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Re: Scratchy Drawing

09/26/2014 11:08 AM

What? No, no, no, no...

This is one of the many concepts protected by patent that belongs to LynDoor Overunity Industries. This outright infringement of one of our lucrative overunity scams schemes will not be tolerated.

Our people are composing a complaint to our litigious bulldog Sue M. Bigtime, a junior partner from the firm of Dewey, Cheatum, & Howe.

Consideration is being given to include Archimedes in the complaint.

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