2-Stager unit

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04-25-2008, 12:53 PM
sacha35

Quote:

Originally Posted by before

Thanks :toast:

Of course the lenght has to be adjusted upon the need. :) BTW I've checked the properties of 2 cascades that shown very good held of load (IIRC 250W+
@ about -107C). Obviously, unloaded temp and loaded one are highly correlated.

Also; this chart doesn't stand to be an 'end of all charts' you know (1st stage is so important as well even if the 1st compressor is also highly predictible knowing the 2nd one), but an approximate table gathering values one might expect to use with R1150 relativily to the 2nd stage compressor power. Assuming a linear relationship (which is pure guess), I would say the lenght is to be taken + or - 0.10m or something.

Thanks for the info mate, seeing your builds has been a big help and inspiration.

One more question is there any reason why you use 0.37/0.9mm cap tube instead of 0.31/0.8mm
04-26-2008, 02:46 AM
before

Thanks so much :)

0.8mm doesn't look like to be suitable with 20kbtu/h+ compressors. At least that's what I guess... I've encountered a matter of very HSP with 0.8mm and the 25kbtu/h compressor used in my 3-stager 1st stage. Captube was 1.9m long, and formerly set for a 10kbtu/h. After moving for the 25kbtu/h beast, captube became a matter.

Under windows with today's tuning.

Idle : -117.8C evap (-60.3C HX out)

http://www.ixtremtek.com/images/Asus...o/-117,8Ca.jpg

Just for fun; final tuning won't be that cold. :)
04-26-2008, 10:07 AM
Xeon th MG Pony

flares are one shot, second you torque the bolt, if you unmount it you must remake the flare. Technicaly you can re-use a flare 2 more times but it should be avoided.
04-27-2008, 07:50 AM
before

Sorry buddy... why are you talking about flares? :) Wrong thread?
04-27-2008, 10:04 AM
Xeon th MG Pony

Quote:

Originally Posted by before

It has been a long time since I've last updated this thread...

BTW I still have a problem with flaring the oil return captube. It looks to leak a bit everytimes I unmount and then remount it. Will probably braze a simple captube here; but it pisses me off to have bought a special captube with flaring nuts and not using it. :)

Anyway; what you guys honestly think about these temperatures? Those are pretty cold, that's true, but can I expect less?

I'm not sure about the good functioning of the second stage CPEV... Maybe I'll remove it and braze a captube there.

Thats why I talked of flares ;)
04-27-2008, 11:10 AM
before

Oh ok... that was on January the 12th... I forgot :D

Thanks for your reply anyway :toast:
04-27-2008, 01:42 PM
Xeon th MG Pony

Ah, that is understandable lol.I just saw this thread at the top and thought it was realitively new.
05-12-2008, 02:12 AM
before

The old 1.9kW home-repaired condenser is leaking again... I've ordered a Luve 5.2kW one to be used as a replacement. Guess it'll fit much better.
05-12-2008, 02:23 AM
DagoDuck

LOL, that's a huge condensor, before. :D I guess from cold_ice? Looking forward to it!
05-12-2008, 02:37 AM
piotres

5.2 kw :eek: man You beat me with mine 3.6 kw :D

so what captube on 2nd stage are You using now ?
05-12-2008, 03:27 AM
august123

a big condesor isn`t always good, i made this experience in my huge cascade. you may have to switch one fan off (when possible) or control fan speed.
05-12-2008, 03:36 AM
n00b 0f l337

Just use a fan cut in, cut in at desired max pressure, cut out at a lower one.
05-12-2008, 10:12 AM
before

Yeah that's a big one; BTW you know, first stage compressor power is 2.4kW while second one is 2.1kW... :D

Quote:

Originally Posted by piotres

so what captube on 2nd stage are You using now ?

3.5m of 0.9mm... Guess it's a bit small for the capacity of this compressor; but too low pressures make the compressor to be very very hot.
05-19-2008, 11:02 AM
before

New condenser installed.

Tried it quickly and got -101C CPU socket temp during Spi 32M à 5.8GHz @1.81v... :D That's damn good. I'm gonna setup a Win XP to perform some 3D benchies.

http://www.ixtremtek.com/images/45KbtuBEa.jpg
http://www.ixtremtek.com/images/45KbtuBFa.jpg
http://www.ixtremtek.com/images/45KbtuBGa.jpg
04-10-2009, 12:21 AM
before

I've played a bit with this cascade. It holds load pretty well: -112C idle, -110C Spi32M (HX @-62C). :)

http://img509.imageshack.us/img509/2...tre1copiev.png

http://img509.imageshack.us/img509/7...g8350copie.jpg
04-20-2009, 03:02 AM
ryba

Nice job!! My cascade doing similar temps.
04-20-2009, 04:40 AM
before

Thx mate. :) Any pics of yours?
04-20-2009, 04:53 AM
ryba

Quote:

Originally Posted by before

Thx mate. :) Any pics of yours?

Here you have
04-20-2009, 08:42 AM
sdumper

Quote:

Originally Posted by ryba

Here you have

A 3 stage is a different beast from a 2 stage :p:

Nice temps on the 2 stage though.

And Before:
Also Nice job:up:
04-20-2009, 09:03 AM
ryba

Quote:

Originally Posted by sdumper

A 3 stage is a different beast from a 2 stage :p:

Nice temps on the 2 stage though.

And Before:
Also Nice job:up:

And where do you see 3 stage?
04-20-2009, 11:01 AM
sdumper

Quote:

Originally Posted by ryba

And where do you see 3 stage?

LMAO your right!!! :rofl:

I thought this was his gross bertha thread :)
04-20-2009, 06:42 PM
gaidin

hehe wrong thread sdumper ;)
04-21-2009, 05:40 AM
before

lol :D sdumper, my Grosse Bertha is doing a bit lower temps! Based on socket temp, I'd say about 15C less at equivalent load.

Thanks guys.

Ryba, did you use captubes? If yes, what lengths?
04-21-2009, 07:59 AM
ryba

Quote:

Originally Posted by before

lol :D sdumper, my Grosse Bertha is doing a bit lower temps! Based on socket temp, I'd say about 15C less at equivalent load.

Thanks guys.

Ryba, did you use captubes? If yes, what lengths?

Captubes... but I don't remember how much :D For sure 0.8mm
04-21-2009, 08:09 AM
before

lol ok thx anyway :D

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