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How do you make a super silent rotary pump?
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JamesBond007
Senior Member


Joined: 29 Sep 2003
Posts: 71
Location: Melbourne, Australia
Expertise: I love coffee

Posted Sun Oct 11, 2009, 6:58pm
Subject: How do you make a super silent rotary pump?
 

Hi guys,
I havea rotary pumped machine, and was wondering if there's any way to make it even more quiet.
It's already quiet, but I want it to be SUPER SILENT.

Any advice welcome.

Cheers
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fnacer
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Joined: 25 Feb 2007
Posts: 465
Location: Denver
Expertise: I love coffee

Espresso: Salvatore E61, Vivaldi Mini...
Grinder: Mazzer Mini, Gaggia MDF,...
Roaster: Behmor 1600
Posted Sun Oct 11, 2009, 8:12pm
Subject: Re: How do you make a super silent rotary pump?
 

Put the pump under the counter?

Not that I know what I'm talking about :)
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JamesBond007
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Joined: 29 Sep 2003
Posts: 71
Location: Melbourne, Australia
Expertise: I love coffee

Posted Mon Oct 12, 2009, 3:51am
Subject: Re: How do you make a super silent rotary pump?
 

Thanks for that advice,
but the pump is enclosed in the machine, so in my case, the whole machine would have to go under the bench!

Cheers
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JonR10
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JonR10
Joined: 26 Apr 2004
Posts: 10,376
Location: Houston, Texas
Expertise: I love coffee

Espresso: E61 Legend, Livietta,...
Grinder: Robur, B-Vario-W
Vac Pot: Hario Tabletop, Yama...
Drip: Technivorm
Roaster: 1-lb US Roaster, Behmor 1600
Posted Mon Oct 12, 2009, 4:40am
Subject: Re: How do you make a super silent rotary pump?
 

JamesBond007 Said:

Thanks for that advice,
but the pump is enclosed in the machine.....

Posted October 12, 2009 link

Many commercial machines have the pump removed from the body and connected by a hose (and electrical wire).  This way the pump can be under the counter while the machine stays on top, and the operation is very quiet.


But in general, the way to reduce the noise from the pump inside the machine is to isolate the pump vibration from the machine case.  This is often done with rubber mounts to attach the pump to the frame, so maybe you could do something similar or add to the rubber by using something like DynaMat between the existing rubber mounts and the frame (Dynamat is a vibration dampening material used for mounting stereo speaker boxes)

JonR10: dynamat.jpg
(Click for larger image)

 
Jon Rosenthal
Houston, TX
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calblacksmith
Moderator
calblacksmith
Joined: 25 Nov 2007
Posts: 7,781
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Mon Oct 12, 2009, 6:33am
Subject: Re: How do you make a super silent rotary pump?
 

1+ on Jons post.

 
In real life, my name is
Wayne P.
Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

Feed the newbs, starve the trolls and above all enjoy what you drink!
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JamesBond007
Senior Member


Joined: 29 Sep 2003
Posts: 71
Location: Melbourne, Australia
Expertise: I love coffee

Posted Mon Oct 12, 2009, 4:07pm
Subject: Re: How do you make a super silent rotary pump?
 

Thanks JonR10.
I'll do that!

Regards
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werbin
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Joined: 19 Jun 2007
Posts: 3
Location: New York
Expertise: I love coffee

Espresso: Expobar Brewtus
Grinder: Mazzer
Posted Mon Oct 12, 2009, 8:37pm
Subject: Re: How do you make a super silent rotary pump?
 

Why do you need to make the rotary pump quieter?
I am guessing that you have a good grinder that is substantially more noisy than your rotary pump.
Am I wrong?
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JamesBond007
Senior Member


Joined: 29 Sep 2003
Posts: 71
Location: Melbourne, Australia
Expertise: I love coffee

Posted Tue Oct 13, 2009, 1:37am
Subject: Re: How do you make a super silent rotary pump?
 

Hi Werbin,
Good question.
Let me answer by stating that yes, I do own a relatively quiet grinder in a Mazzer Mini, which is in fact noisier than the pump.

Why would I want to make the rotary pump quieter?
Well, only because I am a Coffeegeek and espresso lover, and by default a perfectionist, so naturally I would want to spend copious amounts of money to improve performance by miniscule amounts, and spend hours doing modifications that no one other than the people who access this site would even appreciate.

I suppose that's why I would want to make my rotary pump slightly quieter, but you knew that anyway!

Cheers
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