Quieter Fans

The place to discuss your hardware and software/firmware modifications...
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sthone
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Re: Quieter Fans

Post by sthone » Thu Sep 21, 2017 4:25 pm

I'm guessing they probably haven't changed the power supply much since the Rev' D's but the best thing to do is just crack open the case and see whats written on the fan that's in there now.... and replace it with a Noctua of the same size/voltage.

crazyg0od33
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Re: Quieter Fans

Post by crazyg0od33 » Wed Oct 18, 2017 12:37 am

how do you actually open the PSU?

It's almost like my cover is cemented on lol. I unscrewed the sides, and then tried the bottom when that didnt work.
The lid is impossible to remove.

I wanna swap the fan to a noctua

edit - talking about the black case. I can't even get inside of it. it's like it's glued shut

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sthone
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Re: Quieter Fans

Post by sthone » Wed Oct 18, 2017 11:55 am

Does yours have the plastic outer shell or is it metal?

crazyg0od33
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Re: Quieter Fans

Post by crazyg0od33 » Wed Oct 18, 2017 4:51 pm

sthone wrote:Does yours have the plastic outer shell or is it metal?

metal - turns out top screws were covered by the warning stickers, so we're good now. I feel very stupid lol

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insta
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Re: Quieter Fans

Post by insta » Wed Oct 18, 2017 6:16 pm

Something about that sentence appeals to me as a maker.
Custom 3D printing for you or your business -- quote [at] pingring.org

crazyg0od33
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Re: Quieter Fans

Post by crazyg0od33 » Thu Oct 19, 2017 11:34 pm

Ok - all figured out.

Holy moly that's a quiet power supply unit now haha

psd
Posts: 182
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Re: Quieter Fans

Post by psd » Sat Oct 28, 2017 6:25 pm

what is the end result of everyone's testing with Dampers?

I just installed them on another machine of mine and now all you hear is the power supply fan!

I would like to install them on the M2, but see there were a few who removed them, what is the consensus?

Would you recommend I install them, if so which size, and on which steppers?
thanks!
- peter,

innovative product designer and tinkerer

www.petersolomondesign.com

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zemlin
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Location: Indianapolis, Indiana

Re: Quieter Fans

Post by zemlin » Sun Oct 29, 2017 9:12 pm

psd wrote:what is the end result of everyone's testing with Dampers?

I just installed them on another machine of mine and now all you hear is the power supply fan!

I would like to install them on the M2, but see there were a few who removed them, what is the consensus?

Would you recommend I install them, if so which size, and on which steppers?
thanks!
I have them installed on X and Y. I have thin washers as shims on the outboard screws (one on the motor, one on the damper) which causes the motor shaft to lean out a touch when loose. I then tension the belt until it runs centered in the motor sprocket indicating the shaft is perpendicular to the belt line.

I've done test prints with and without to see if the reduced rigidity of the axis drives impacts ringing on the parts and could see no difference at all in the prints with and without the dampers.

psd
Posts: 182
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Re: Quieter Fans

Post by psd » Sun Oct 29, 2017 9:49 pm

Thanks,
I did not understand where you put the washers or why?

What size dampers do we need?
NEMA 17?

Did you do it to all 3 motors?
- peter,

innovative product designer and tinkerer

www.petersolomondesign.com

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zemlin
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Location: Indianapolis, Indiana

Re: Quieter Fans

Post by zemlin » Sun Oct 29, 2017 11:02 pm

psd wrote:Thanks,
I did not understand where you put the washers or why?

What size dampers do we need?
NEMA 17?

Did you do it to all 3 motors?
NEMA 17 dampers.
I only installed them on the X and Y axes. Z doesn't do enough to be a noise maker.

Figure the dampers are a rubber spacer between the motor and the machine. If the motor is square to the frame when mounted, applying tension to the belt will cause the motor to lean into the belt and the shaft is no longer normal to the machine frame.
IMG_0471.jpg
I installed thin washers on the outboard screws - one of the outboard screw locations with the washer is circled in the photo above. The washer causes the motor shaft to point slightly outward from the belt line. The reaction to the belt tension causes the motor to lean into the belt which moves the motor shaft into a normal orientation to the machine frame and belt line.

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