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Pipe bending 101 - Page 17

post #161 of 2160
ok gonna grab some of those air tube then biggrin.gif
I got 4 meter to fool around smile.gif . To my surprise those acrylic tube are kinda strong not brittle as I imagined it would be.... and kinda cheap
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post #162 of 2160
Can anyone tell me if these fittings will hold the tubing? They look like they should be for 12mm tube and they are reasonably priced.
http://www.aquatuning.us/product_info.php/info/p5187_variable-SLI-Crossfire-VID-connection-nipple-G1-4----1-Slot----black-nickel.html

I wanted to go with the Bitspower fitting but to get it shipped to Canada would be 26 dollars when the fitting cost only 24 dollars.

Also, do you think an 8mm ID would be too restrictive?
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post #163 of 2160
Thread Starter 
Those fittings work fine.
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post #164 of 2160
Quote:
Originally Posted by regles View Post

Can anyone tell me if these fittings will hold the tubing? They look like they should be for 12mm tube and they are reasonably priced.
http://www.aquatuning.us/product_info.php/info/p5187_variable-SLI-Crossfire-VID-connection-nipple-G1-4----1-Slot----black-nickel.html
I wanted to go with the Bitspower fitting but to get it shipped to Canada would be 26 dollars when the fitting cost only 24 dollars.
Also, do you think an 8mm ID would be too restrictive?

after i googled the hell out of it, 8mm id or roughly 5/16" id isn't that restrictive if you are using push-in fittings the tubing as a whole would have a bit more pressure drop then most cpu water blocks at 1.5gpm with 2 meters of tubing it came out to 1.81psi total for a straight tube, and 0.12psi for every 90 degrees of bend at 2" radius, 0.13psi for every entrance that isn't rounded, 0.01psi for rounded
listed for easier consumption:
2m of 8mm = 1.81 psi of pressure drop
90 degrees of bend at 2 inch radius = 0.1 psi of pressure drop
and since entrances are = 0.01psi drop just make sure they are rounded and you would have to worry about it

http://www.pressure-drop.com/Online-Calculator/index.html

now compare those to 10mm id tubing
2m of 10mm = 0.62 psi
per 90 degrees of bend at 2" radius = 0.05 psi
per rounded entrance = 0.01 psi

now 13mm id tubing
2m of 13mm = 0.18 psi
90 degrees of bend at 2" radius = 0.02 psi
per rounded entrance = 0.00 psi

but yea add up all the pressure dropped across your loop if it's less than your pump can put out, say for instance an mcp35x can put out 22psi, just don't go overboard with the crazy straw look and you should be fine with 8mm id tubing

nerdsmiley.pngteaching.gif (the closest emoticons to nerding out)
Edited by somebadlemonade - 8/8/12 at 4:41am
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post #165 of 2160
Quote:
Originally Posted by GoodInk View Post

But you'll need to find 12mm tubing and use the Bitspower connectors.

Is it just me, or is this a better way to use pipes in your build than copper?

You still get those sharper than Tygon Tubing pipe curves and straight lines, you still get to SEE the water (how do you bleed the loop if you can't see the bubbles? Plus the water is cool looking), you don't need fancy tools (like a pipe bender or solder tool), and you can use the heat gun for other acrylic constructs, making it a far more useful investment. And it should be loads cheaper to do.

So you use the fittings for the BitsPower Crystal Link Tubes, if not bend the Crystal Link Tubes themselves as well, but are they as secure from leaks as normal Tygon/Compression Fitting builds?

They should make a Crystal Link Tube with hybrid molded soft ends to fit onto any compression fitting. That would be a killer product.
Edited by Neo Zuko - 8/8/12 at 5:26am
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post #166 of 2160
Quote:
Originally Posted by B NEGATIVE View Post

It's a piece of silicon tube, it's flexible, doesn't stick to plastic, and keeps its roundness when bent.

Even Better. Bad Ass. I may have to try this!!
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post #167 of 2160
The only thing is ...getting a perfect bend and where would it bend is a deep question for me ...... since u can use a tool when working with copper
but with acrylic it can get pretty hard since playing with heat around 1X0C and getting desired pin point location to the hole ...

...the best thing is ...my sli connector look like a shrimp ... compared to my lovely stick
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post #168 of 2160
they use molds when working with glass or plastic, with the ends capped with a tube to blow into to make sure it doesn't collapse

since the glass transition temps for polycarbonate and acrylic are between 100c and 170c you could make the molds out of wood if you wanted with a router and the size bit, but that's really expensive if you don't have a router, if you do have a router you could just find a 5mm radius (10mm diameter) ball end or core box router bit would do the trick, though those are a pain in the ass to find, a 1/4" radius core box or ball end bit is a ton easier to find

the bits are usually under $30-40 so it's not a wallet breaking ordeal
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post #169 of 2160
awesome guide!
post #170 of 2160

I know its a bit after the fact and probably a noob question, but will these fittings work attached directly to a bay res/pump or would the vibrations cause them to leak after a bit?
     
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