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Old July 16, 2008, 12:36 PM
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BrainEater BrainEater is offline
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Join Date: Mar 2007
Location: Calgary
Posts: 2,742

Hehe .

The only time I have mental instability is when I'm in stupid Calgary traffic.

Thanks , a little luck won't hurt.


I have solved my pump problem !!! (mebbie)

This has been a rather major hurdle.I've spec'd out pumps of every type and design.I've had people laugh when I told em the required operating specs.The cryogenic pumps I have seen are many thousands of dollars.

So when in doubt , build it.

To this end , today I found and purchased just what I needed :

A 67 mm (2 5/8") 3-blade brass RC racing boat prop ;


I'll be putting this prop inside a 3" copper tube like so :


You can pretty much figger out where this goes......I'll be attaching the prop to a variable speed belt system and a 1/3 HP motor....I need to fabricate shaft bearings , and output barbs onto the copper tube but thats no big deal.....

Considering what the final product will be made from , I see no reason this pump won't operate at -200C let alone the -100c I want.

Supermicro X11DPi-NT:2x Xeon Gold 6144's:Lots more other stuff.Dual 4k monitor video .

Last edited by BrainEater; August 6, 2008 at 05:40 PM.