Archimedes Screw

[Adam Y.]

If it's the ones I'm thinking of McMaster-Carr.

Can you tell me what part number it is. I have another project that would benefit greatly from premade archimedes screws.

[phrontist]

Originally Posted by Adam Y.

Can you tell me what part number it is. I have another project that would benefit greatly from premade archimedes screws.

What are we talking about exactly, size wise? A worm-gear size thing, or something with a six inch diameter...

[Adam Y.]

Originally Posted by phrontist

What are we talking about exactly, size wise? A worm-gear size thing, or something with a six inch diameter...

Honestly I don't know now that I think of it. I want something three or four inches in diamter. Of course Im not even sure if we are talking about the same things. He may have meant a lead screw used in actuating something up and down while i meant the actually archimedes screw used to move water about.

[George]

Sorry for the long reply time,
You are right, I was thinking of the lead screw. dumb me! (late hours and all)
You can make a screw. but I would need a better idea of what you need before suggesting a game plan
Geo.

[Bruce Newendorp]

Try this place:

http://www.pic-design.com

We have not bought anything from them but they do have many lead screws in their catalog.

[Gary C]

Originally Posted by George

Sorry for the long reply time,
You are right, I was thinking of the lead screw. dumb me! (late hours and all)
You can make a screw. but I would need a better idea of what you need before suggesting a game plan
Geo.

Um...one of our team member had an idea like that:
It would be 9 foot lead screw that just lifted the tetras up that even if you figured out how to grab a tetra, you would have to make it implode on itself to fit size recquirements.
But, then again, maybe I'm just out of it and don't know what you want with a lead screw.

-Gary

[Bill Beatty]

Greg

In the 1994 competition, "Tower Power", one of the teams made an Archimedes screw out of plastic. There is a pretty good shot of it in the "Tower Power" video. They made the mast out of a triangular formed pastic sheet with a course pastic lead screw inside. I don't recall one ever being supplied in the KOP.

Mr. Bill

[misterfoo]

Originally Posted by Gary C

Um...one of our team member had an idea like that:
It would be 9 foot lead screw that just lifted the tetras up that even if you figured out how to grab a tetra, you would have to make it implode on itself to fit size recquirements.
But, then again, maybe I'm just out of it and don't know what you want with a lead screw.

-Gary

We were looking at this type of collapse design, if you look at a typical 4 foot aluminum extension ladder, you can get 8 feet easily with a "lead screw" or
a winch and pulley.

If you are set on the lead screw, then look at the next diagram.

I also borrowed a picture from a barrel forklift repair manual.

http://www.morsemfgco.com/opsmanuals...E%202STAGE.pdf

This shows how to tie 2 lift pieces together and drive 1 while dragging the floater lift up in sync.

It is Your basic forklift, which you could replace the hydraulics (labeled as 31) with a lead screw.

I am sure Morse mfg will just love a thousand web hits on the repair manual page ;-)

[MattB703]

Originally Posted by George

Sorry for the long reply time,
You are right, I was thinking of the lead screw. dumb me! (late hours and all)
You can make a screw. but I would need a better idea of what you need before suggesting a game plan
Geo.

Lead screws are also available from www.smallparts.com. Who here remembers when this was the only allowed source of components? (rhetorical question)