Z9 Mini Dual Fan - page 2. | Bitcointalksearch.org

kahc

member

Activity: 350

Merit: 13

Quote from: Lypus on August 28, 2018, 01:52:34 PM

I changed for testing one of my Z9 mini to dual fan.
https://image.ibb.co/gQhXXp/mini_edit.jpg

Maybe later I will cut a big whole in the backplate.
https://preview.ibb.co/my7hXp/IMG_20180828_190527_HHT.jpg

Stats of the dualfan Z9 mini
https://image.ibb.co/cF1ZCp/mini1.jpg

Stats of the normal Z9 mini
https://image.ibb.co/jEPXyU/mini_2.jpg

EDIT
Some thoughts, the big advantage is that the miner have now enough power to push the Air out. My problem is that there is no good way to install the hose. Does anybody know where to get a backplate with screws for the other side.

The hose (I'm not sure about the right word in english)
https://preview.ibb.co/kNWFk9/IMG_20180828_200519_HHT.jpg

I couldn't get a hold of the backplate either, I asked around local mechanical workshops, all quoted me $200++ for making such plate in aluminium.
If you know someone with access to a CNC then maybe you can get it done for a reasonable price.

In my case, I 3D modelled a fan mounting bracket( aka cowl) and got it printed locally ( 3dhubs.com), it costed about $15.
The cowl is attached to the backside of the antminer with duct-tape.
The hose you are referring to is called a duct, sonodec on the other hand is a hose.
The duct is attached to the fan, and the fan to the cowl. M4 screws, nuts and washers can be obtained locally.

So my setup goes like this:
flexible hose -> duct -> exhaust fan -> cowl -> Z9 mini -> intake fan

I can upload some pictures later once I get home.

Lypus

newbie

Activity: 12

Merit: 0

I mentioned it tonight, the second fan makes the miner a lot louder (removed it tonight for better sleep). I will make another try with a hose and a sonodec.

@imine2
I removed the backplate before to clean the miner, but I do not like to run the miner completly open.

imine2

jr. member

Activity: 98

Merit: 4

Hi,
New member!
Don't have a screencapture yet!

These are my findngs:

I voided my guarantee and removed the backplate (with small holes) completely !!!

Doing 750 MHz with original fan in auto-mode.
Doing an avarage of 16.28 KSol/s.
My ambient room temp about 23-26 Celsius depending sunny or not (+ summer).
My temp (PCB) 49-53 C and temp (Chip) 63-67 C.
Fan speed normaly between 3600 - 3720 rpm.

If anyone of you already voided your guarantee like me perhaps you could try doing what I have done and for everyone else confirm / dismiss my findings.

Just sharing own experiences !

Lypus

newbie

Activity: 12

Merit: 0

I used rubber screws made for fans.
https://preview.ibb.co/ghLi59/IMG_20180828_201031_HHT.jpg

Maybe I will change all screws later.

Sebahl

jr. member

Activity: 146

Merit: 4

How did you mount the fan?

Lypus

newbie

Activity: 12

Merit: 0

QFR1212GHE, about the noise level I can't say anythin because the miners stand next to each other. After one day testing I will change the second one.

Sebahl

jr. member

Activity: 146

Merit: 4

What kind of fan did you use? Did the noise level decrease?

Lypus

newbie

Activity: 12

Merit: 0

I changed for testing one of my Z9 mini to dual fan.
https://image.ibb.co/gQhXXp/mini_edit.jpg

Maybe later I will cut a big whole in the backplate.
https://preview.ibb.co/my7hXp/IMG_20180828_190527_HHT.jpg

Stats of the dualfan Z9 mini
https://image.ibb.co/cF1ZCp/mini1.jpg

Stats of the normal Z9 mini
https://image.ibb.co/jEPXyU/mini_2.jpg

EDIT
Some thoughts, the big advantage is that the miner have now enough power to push the Air out. My problem is that there is no good way to install the hose. Does anybody know where to get a backplate with screws for the other side.

The hose (I'm not sure about the right word in english)
https://preview.ibb.co/kNWFk9/IMG_20180828_200519_HHT.jpg

Topic: Z9 Mini Dual Fan - page 2. (Read 773 times)