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Thinktank Revision 2.0

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BrainEater

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Mar 19, 2007
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I may have been hasty about ranting about Dow.Would'nt ya know it , as soon as I rant , I actually find someone who is willing to talk to me....ah well.We'll see what happens.

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I have finally secured 24 feet of 3/4" type L soft copper tubing ;



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This was amazingly difficult to find as well.......Interestingly , I ended up getting it at Rona.Couldn't seem to find it at my usual plumbing shops.

I have secured a 3/4" flare tool , and have my 3/4 flare fittings on order , so my coolant lines are getting closer.

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I have a quick and dirty method of setting up a test pump with the actual copper housing , but it means some machining....I should have some test results this weekend.

I'm reasonably sure it'll work well.If mythbusters can make a pump from an actual outboard motor , I certainly can with a boat prop.

:thumb:
 

klaiboi

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Jun 18, 2007
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Montreal
speaking of mythbusters.....I wouldn't be surprised if BrainEater was Adam lol....except for the Calgary part lol
 

BrainEater

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Haha....nope srry, :haha: .

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I have put together a testable prototype of the pump. (!)

My drill presses got a workout today.

I started out with a 5/8" thick piece of MDF.With a 3" and 3 1/4" holesaw , and a 3/8 drillbit , I created two 'endcaps' to fit onto the 3" copper pipe ;



I then cut a 7" section of the 3" copper pipe and drilled (perforated) the bottom couple inches of it ;



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the 2x 3/4" copper output lines come out of the top like so ;




Exploded view :



Assembled view :



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hehe.

I have soaked the 2 MDF endpieces in clearcoat , so the water from the tests won't immediately wreck it.

The prop fits quite closely inside the pipe , 1/8" annulus at most.I think it;ll be fine.

I should be doing some tests tomorrow.

:thumb:
 

Mibs

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Jun 5, 2007
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St. John's, NL
The pump looks awesome BrainEater! All those perforations in the bottom really do look great. Now let's se how it works!
 

BrainEater

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Joined
Mar 19, 2007
Messages
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Location
Calgary
Thanks guys ! :biggrin::biggrin:

We'll see if it'll do what it needs to tho.I'm sure it'll pump water.

I need it to have enough pressure for 4 feet of lift , pumping syrup.

Once I confirm it works , the MDF endplugs will be replaced with copper/brass analogues.Then I'll test it with iso and dry ice.That'll be the real test.I think it'll work tho.

:thumb:
 

grinder

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Joined
Mar 16, 2007
Messages
829
dude.. that prop setup looks bad ass. I should swing by tomorror and take a boo in person ;)
 

3.0charlie

3.0 "I kill SR2's" Charlie
Joined
May 22, 2007
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Location
Bedford QC
You have a Steel shaft with a Brass propeller - how will the materials react with such low temps? I'm talking mostly material shrinking here for 2 reasons: make sure the prop shaft hole does not crack and how tight will they be one to the other. Or do you intend to use a mechanical fastener to prevent slipping?
 

sswilson

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Dec 9, 2006
Messages
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Location
Moncton NB
Heh....

This whole thing is simply amazing!!! Why do I get the feeling that the words "more power Igor!!!" are uttered in your household during REM sleep???? :)
 
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