40mm fans

[ridfer]

hey,

 

i'm looking for a fan to replace in my beamer. http://www.konigelectronic.com/nl_nl/55888637  (for some reason i couldn't find the product on the international site )

the front broke so i can now modify it to fit a 2cm deep fan. the fan its using right now is a SUNON KD0504PFB2-8.

this one makes way to much noice to enjoy movies with so i want to replace it.

it has a airflow volume of 6.5 cfm at a fan speed of 6500 rpm. and it uses 2 pin conector.

i thought i replaced the fan at some point but i realy don't remember >.< so i don't realy know for sure if it actualy needs this much airflow volume.

so my question is what would be good options cuz realy i cant find a lot most of the fans i run into have around 4 cfm airflow and i'm afraid thats realy to little, or they use a 3 pin conector. if anyone knows if it is possible to run a 3 pin fan on only 2 pins that would be cool aswell.

would be awesome if some of you had some sugestions.

 

picture's of the beamer/situation bellow.

Spoiler

 

 

[HrutkayMods]

more air flow always better... 3 pin have 1 RPM pin that isn't needed for the fan to run, so in theory, yes a 3 on 2 would work, you could swap the connector from the dead fan on to the new fan, I did that with a network switch box fan once, simple.

[JPotze]

what about the noctua nf-a4? it is 'silent' and good for airflow.

 

it does 8.2 m3/h that is 2895.8 cubic feet / 60 minutes is 48cfm

Edited April 20, 2016 by JPotze
additional info

[manikyath]

http://www.fractal-design.com/home/product/casefans/silent-series-r3/silent-series-r3-40mm

i had one of these strapped to my pi for a while, seems to do a really good job.

[ridfer]

3 minutes ago, manikyath said:

http://www.fractal-design.com/home/product/casefans/silent-series-r3/silent-series-r3-40mm

i had one of these strapped to my pi for a while, seems to do a really good job.

 

11 minutes ago, JPotze said:

what about the noctua nf-a4? it is 'silent' and good for airflow.

 

it does 8.2 m3/h that is 2895.8 cubic feet / 60 minutes is 48cfm

i'm afraid both of these just won't give enough airflow, sindse the beamer realy gets quite hot fast and even with this fan it gets decently hot so i think i need at least a 6cfm fan

[JPotze]

2 minutes ago, ridfer said:

so i think i need at least a 6cfm fan

if the spec sheet of noctua is right (and i assume it is) then you would get plenty of airflow of this fan.

[ridfer]

5 minutes ago, JPotze said:

if the spec sheet of noctua is right (and i assume it is) then you would get plenty of airflow of this fan.

nope, the noctua only does around 4,8

also nuctua i think is way to hyped and overprised so would rather go with a something like scythe.

but that's a whole other discussion.

[JPotze]

if i google, this is one i find but it is discontinued.

http://www.svc.com/r124020bm.html

 

I will google some more.

[ridfer]

i am looking at the Spire SP04020S1M3 40mm atm, still trying to find better solutions but it seems pretty good, only it is still 26 db wich is still quite loud i think.

 

 

[Rodniz]

Noctua got some pretty decent 40mm ones,

[ridfer]

1 minute ago, Rodniz said:

Noctua got some pretty decent 40mm ones,

please read earlier replies, noctua's wont do it.

[ridfer]

so i found the Cooltek Silent Fan 4020 this seems like a pretty good alternative