127mm fans, yes there really are such things Timmy!

[magellan]

They're usually industrial fans but some servers use them (e.g. HP)

Nidec manufactures them:
Beta V
ta500dc

Nidec even manufactures a wide-body model that is 127x50mm (screaming loud, mucho CFM [200+] and static pressure).

So does delta:
FFB1312EHE (a 127x38mm vaneaxial, which is also loud and produces 179.75CFM to 200 CFM and16.40 to 20.30 mmH2O of static pressure)

Why do they manufacture 127mm fans when there's only a difference of 7mm between them and 120mm fans? It could be because there is standard ductwork in 127mm (~5") sizes.

 

[EarthDog]

Sweet. A cursory glance it seems these are not ready-made for home PC applications so that's what threw me off, lol (like a MiB/GiB thing, haha!). You have to wire in your own connections (Delta), and the Nidec is a 24V application. Typically fan PCs were always in 40/80/120/140/200 etx. and 12V with power use more appropriate for their 3/4-pin headers (some molex of course).

Are there any with standard connections at 12V that don't take over 2A/24W?

 

[magellan]

The HP server customized version of the Nidec TA500DC I have is +12V. It's customized because it has output, flow straightening vanes (somewhat like the Silverstone SST-AP182) that aren't present on the regular models. I got two for cheap off ebay. The delta FFB1312EHE I have is also +12V, but has no PWM control features

The Nidec TA500DC B34607 only draws 1.97A @ 12V so that's less than 2A!

 

[Nebulous]

I remember going to the e-waste place here and snag those Nidec fans. I found 2 150mm round server case fans. Think I paid $20 for the pair. They were 115v AC, and at full bore it was insane! I had to use an AC light dimmer switch to control it.

 

[magellan]

@Nebulous
The AC light dimmer pot was a great idea! What use did you put them to?

I have a +12V 150x50mm delta fan (the AFC1512DG, 259 CFM) I've never used. I originally wanted to put it in the floor of my case because I don't have enough intake vs. exhaust, but my silverstone SST-AP182 sidecover fan has that covered now.

 

[Nebulous]

From what I remember I used them on one of my very first water cooling loops with a Chevy heatercore for a rad and used the fans on that in push/pull. If I find a pic or two, I'll post up.

 

[Niku-Sama]

thats interesting. earlier this week i found a VA450DC and was thinking if grabbing a few for a rad. i bet the static pressure at low speeds on these would be better than most still.

anyway as for the 127mm part, i think you got it right off the bat. its a very common duct size for many different things. I think the standard US dryer vent is a 5 inch'er

 

[stompah]

Typically fan PCs were always in 40/80/120/140/200 etx.

Did 92mm fans not even exist to you? You monster.


Speaking of monsters. Do you guys remember the little delta screamers? You know the ones that would take the tip of your finger off if you didn't heed the screeching as a warning.

Imagine jamming your fingers into one of those 127x50 24v fans... Starts at the finger tip and sucks your hand in, chopping it's way up to the wrist? Gnarly.

 

[EarthDog]

Did 92mm fans not even exist to you? You monster.

Heathen!

Imagine jamming your fingers into one of those 127x50 24v fans...

Fargo?

 

[Mr.Scott]

From what I remember I used them on one of my very first water cooling loops with a Chevy heatercore for a rad and used the fans on that in push/pull. If I find a pic or two, I'll post up.

I did the same thing.

 

[magellan]

The 127mm fans that I have aren't the beasts that some fans are. A 4300 RPM 127x50mm fan is nothing but a gentle breeze in comparison to this SanAce 172x102mm, dual, contra-rotating monster fan (yes that's an Al framed fan and 600 CFM!):

Yes this fan is 102mm THICK!

 

[Nebulous]

Hey I found a pic. This was testing using one of them meat shreaders as exhaust. Here i'm using a 120mm Scythe Ultra Kaze on the chevy heatercore and plastic shroud.

During P4 days. Dam that was a long time ago

 

[Niku-Sama]

...Speaking of monsters. Do you guys remember the little delta screamers? You know the ones that would take the tip of your finger off if you didn't heed the screeching as a warning.

Imagine jamming your fingers into one of those 127x50 24v fans... Starts at the finger tip and sucks your hand in, chopping it's way up to the wrist? Gnarly.

the VA450 and VA500 are the same, if not more powerful