Quote:
|
Originally Posted by Brians256
You might have problems running the D4's in series....(I think it was the shaft seals?)
|
Do D4's even
have a shaft to put seals on? I had thought the rotor was driven by progressive magnetic fields, not a shaft. Here's an
expanded picture at laing.de.
There
was quite a discussion of shaft seals with the c-systems pumps. First doubt that anything with shaft seals could last the projected life - and then (a couple of months later) pictures of pumps with seals that actually
had failed. And, of course, any centrifugal water pump with a shaft would have its lowest pressure at the center of the rotor - which is where the shaft (and shaft seals) would be - so you'd mostly be sealing against atmospheric pressure, which would be completely wrong for in-series pumps, or at least the
second pump in series. C-systems offered an in-series pair and I (at the time) wondered if the second pump had a different shaft seal). Never found out and it doesn't matter now, does it?
Sorry for wandering off topic.
I don't know if you've found it (I always have to search a bit when I'm looking for it) but there's a very good
interactive waterblock comparison page here at procooling that might help you decide which block is most appropriate for you.