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post #51 of 67
Ok will do, I'm also going to do a flow rate test with 7/16" vs 1/2" ID tubing on the bench. That always seems to come up now and then.
    
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post #52 of 67
Quote:
Originally Posted by Martinm210 View Post
Ok will do, I'm also going to do a flow rate test with 7/16" vs 1/2" ID tubing on the bench. That always seems to come up now and then.

Yeah that would be great...If I remember right you think about it as I do that ID of 1/2" fittings is 7/16" anyway so if anything using the 7/16" ID tubing may help flow some by having a smoother transition at the fittings...Look forward to your results...Thanks for doing it...
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post #53 of 67
Exactly, that's the idea...I'm sure the difference is very small, but it would be interesting if 7/16" flows more because of those lower fitting losses.
    
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post #54 of 67
Yeah it will be such a small amount either way it will be hard to tell probably...Worth trying though...
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post #55 of 67
FYI, made it through about 30 flow rate tests today, have yet to chart them, but my D5s are doing better than I expected, I think that mod I did a while back is really working well. My variable pump maxed out at 5.44 GPM and that is with some tubing and fittings so it's not a completely free flowing condition like most manufacturers P/Q charts come from.

Just one pump also manages to crank out 2.76GPM in my MCW60 + MCR320 + standard loop tubing scenario...not bad at all, seems the MCW60 and MCR320 are more free flowing than I expected.

Another series of tests was the same MCW60 + MCR320 except adding my second D5 to the loop in series and I averaged 3.31 GPM or about a 20% increase in flow rate.

Anyhow taking lots of pics and gathering alot of data, I'll be sure to share it all when I get done. I have several other flow rate tests to complete and then I want to start in on the pressure testing. Another interesting observation, my variable D5 is noteceably stronger than the MCP655-B version, but they are both ported
    
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post #56 of 67
woot D5's FTW, lol love those D5's. glad i have 2 variable speed versions

keep the charts coming....."Chart Martin"
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post #57 of 67
Sounds good...Can you stick a cpu block on it to? It will be more restrictive then jut the Swifty 60, that way guys running a cpu and gpu with a D-5 would have a good idea of their flow....Did the mod hurt head much? You didn't really change the volute enough to hurt the pressure much anyway I wouldn't think...

Well thats a surprise about the "B" model...They may have throttled it a little so the top of the line w/rheo would stay top of the line...

Look forward to seeing it all......
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post #58 of 67
Quote:
Originally Posted by ira-k View Post
Sounds good...Can you stick a cpu block on it to? It will be more restrictive then jut the Swifty 60, that way guys running a cpu and gpu with a D-5 would have a good idea of their flow....Did the mod hurt head much? You didn't really change the volute enough to hurt the pressure much anyway I wouldn't think...

Well thats a surprise about the "B" model...They may have throttled it a little so the top of the line w/rheo would stay top of the line...

Look forward to seeing it all......
Sure, I already have the single pump D-tek with nozzle and GPU loop combo with a single pump, but I havn't tried with series pump, but plan to. I also now have my MCW30, so I can and will also run a CPU + GPU + NB + MCR320 loop.

And I'll have to run another test on the Fuzion without nozzle, because I do think that nozzle has a bigger impact than I thought. Without the nozzle if I remember right a CPU + GPU + MCR320 was running around 1.6GPM, but my test yesterday with the nozzle produced 1.45GPM.

Seems like the fuzion, MCW60, and MCW30 are common blocks, so I plan to run just about every combination I can think of for folks to take a quick glance at and get an estimate for what flow rate they might expect.

Yeah, that's wierd on the B model, not sure if it's a fluke, but I can actually feel hear more motor noise and feel the variable version working harder. Maybe it's because you can actually turn the variable past setting 5? I should try the same test at exactly setting 5 maybe the non-variable is set at excatly what 5 is on the variable, and in actuality you can go to about 5.5.

I also picked up a couple more elbows for my elbow run, I think my 4yr old ran off with one of the previous elbows...he's always playing in my spare parts

Lots of testing left to do, but at least I have a backup notebook to use while the sytem is down
    
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post #59 of 67
Thats a bit of difference with the nozzle, it wouldn't matter much in a cpu only loop but multi-block it could...That will be great with a nice multi-block group like that, most guys just have everything in one loop so that will give them a real good idea of what their actual flow will be...


Yeah the little ones are fast......They'll have something and be gone before you know it...


Look forward to seeing it all....
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post #60 of 67
Hehe, yeah my boy likes to build along side of me, I can see him becoming a tinckering fool like myself..

Well, I was looking hard at my small 3/8" ID barb on my graduated high tech trash can, so I upgraded the inlet to a 3/4" barb and radiused the inlet and added just enough 1/2 tubing to attach the pump so I'm as close to free flowing on the inlet side as possible.

The pump alone without any tubing got 6.69GPM this evening with 3 runs so at the far right of the curve it doesn't take much pressure drop at all to hurt flow rate. This test is a little flawed because I'm actually gaining on average about 1' of head pressure from the measuring can fill level. When I test with a piece of tubing at the outlet, I can correct for it by ensuring the end of the tubing outlet is at the same elevation as the water level dropping, so this flow rate is likely a bit higher than a pump with an inlet that has 0 pressure head. So I ran the test again with the improved inlet and one 14" piece of tubing and got 5.9 GPM, so the actual free flowing would be somewhere in between 5.9 and 6.7, probably something closer to 6.2 to correct up for the piece of tubing that is causing some pressure drop...it's very sensetive at this end.

I also did my first max head pressure test using two 10' sections of tubing like this:

The pump was able to lift the column of water right up to where I have it wrapped around the branch, so there is no way I'm going to be able to measure max pressure head of two pumps in series...I will however run the test a couple of times to get a good average and do the same for the slightly weaker non-variable.

I also got more max head than swiftech notes, I got 13.8' (+- 3" of less than perfect measuring, had to drop a tape a long way down to the reservoir level) 13.8' of water is pressure head is equal to about 6.0 PSI.

I didn't quite expect that high of head, but then this was at the above 5 or max setting. I'm not sure what effect the mod had on the pump max pressure head because I never measured it prior, regardless I'm happy...almost 14' is good.
    
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