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Old 11th August 2002, 12:00 PM   #1
ewat Thread Starter
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Default pump/eheim dampening suggestions ?

hi guys, i know this is mentioned briefly around the place....but i couldnt find a nice answer =|

anyway what do you guys use to get your eheim (or any pump inside your case for that matter) to make a close to silent sound? i.e. so your case ISNT vibrating. i guess the mounting method and material used here would be important

i've tried rubber stuff, then some foamy stuff.....the problem is when i mount the pump tight to the case (4 screws with nuts + red rubber rings) the vibrations seem to pass all the way through the case and you get that really low freq sound =|

when i mount it pretty losely then the eheim seems to take all the vibration and thats the sound i want =) the problem is its not mounted very well anymore =(

so i guess what im asking is, what material absorbs the sounds the best underneath that eheim + your mounting method? (screws etc.)

cheers
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Old 11th August 2002, 12:03 PM   #2
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Bubble wrap



It aint pretty, but its an effective short term measure
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Old 11th August 2002, 12:08 PM   #3
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oo never thought of that =)

how about putting a piece of nice grey foam (which is what i use atm) over it? (so like its bubble wrap on the case, then the eheim sitting on the foam)

what i noticed is moving alota the vibration across is the actual screws =|

will give this a try when i get off my ass
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Old 11th August 2002, 12:12 PM   #4
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Not sure

I'd try mounting the Ehiem to a layer of rubber, then mounting layer 1 to another layer, and to another layer that then screws into the case
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Old 11th August 2002, 12:28 PM   #5
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ive got my pump stuck to the bottom of my case with 3M velcro (not sure of its exact name but its made by 3M). its not like normal soft velcro that u see on clothes. its made of plastic/rubber and is really strong. the pump doesnt move at all and i cant hear any vibrations from the case. its good stuff. i got it from a hardware store.
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Old 11th August 2002, 12:41 PM   #6
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Quote:
Originally posted by Jackson
ive got my pump stuck to the bottom of my case with 3M velcro (not sure of its exact name but its made by 3M). its not like normal soft velcro that u see on clothes. its made of plastic/rubber and is really strong. the pump doesnt move at all and i cant hear any vibrations from the case. its good stuff. i got it from a hardware store.
I have been using the same stuff for over a year. It's an easy way to attach the pump and allows for easy remove the pump for cleaning etc.
I have the pack here in front of me and it's just called Self Stick Dual Lock Reclosable Fasteners There are 4 pieces (2 pairs) in the pack measuring 76.2mm x 25.4mm.
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Old 11th August 2002, 1:39 PM   #7
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I got some 3M Bumpon and i stuck them under my pump... now i have no more vibration... quiet nights for me..
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Old 11th August 2002, 3:41 PM   #8
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where abouts does one obtain 3m stuff =\
i checked kmart..bugger all
mitre10 has a few but its all that command adhesive junk you see from bright ideas =)

(sydney btw)
ta for all the feedback

Quote:
Originally posted by Truncheon


I have been using the same stuff for over a year. It's an easy way to attach the pump and allows for easy remove the pump for cleaning etc.
I have the pack here in front of me and it's just called Self Stick Dual Lock Reclosable Fasteners There are 4 pieces (2 pairs) in the pack measuring 76.2mm x 25.4mm.
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Old 11th August 2002, 4:20 PM   #9
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Quote:
Originally posted by ewat
where abouts does one obtain 3m stuff =\
i checked kmart..bugger all
mitre10 has a few but its all that command adhesive junk you see from bright ideas =)

(sydney btw)
ta for all the feedback

I got mine from hardware house.
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Old 11th August 2002, 5:39 PM   #10
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hmm Great minds think alike :P
i was thinking foam or bubble wrap "_"
useing some leather washers on the scres on both sides will work well to
thats what my mate did

-Matt
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Old 12th August 2002, 6:23 AM   #11
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I'm just using a peice of foam that was in my Cyclone 5 box underneith my Eheim 1250. I can barely hear the pump if at all and vibrations aren't transfered into the case very badly. My pump is bolted reasonably tightly to the case bottom.
I imagon i could isolate the pump a little better by using another peice of foam on the outside of the case and a flat peice of metal to compress the foam and to stop the bolts from pulling through the foam. Using a method such as i've described i think you could probally stop all vibrations from being transfered into the case while keeping the pump extremely soildly mounted. I've been temped to try this but just couldn't be bothered
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Old 12th August 2002, 7:49 AM   #12
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I wrapped teh pump in thin gery anti-static foam, then zip tied it to the case (same as the rad, fans, shroud.........)

/me needs to find something as usefull as zip ties, but better looking
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Old 12th August 2002, 7:55 AM   #13
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i stole crashs idea and used the foam from my cyclone box to dampen the vibration
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Old 12th August 2002, 9:44 AM   #14
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My eheim was making a hell of a noise as I had slightly broken the shaft (about 1-2 mm) and lost one of the rubber thingies (replaced it with a bit of rubber).
Anyway, I had it mounted with screws, but it shook the whole case so I did away with that, just wraped the entire pump in some cloth and rubber-banded it, and sat that on some bubble wrap. Anyhow now I've replaced the shaft and bushels and its much much quieter Just have to leech all the air out.
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Old 14th August 2002, 5:44 AM   #15
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This Eheim 1048 is enclosed in foam and then a plastic strip holds the "package" in place. The removable seating has been removed.


Another Eheim 1048, this time the removeable plastic seating has been mounted with rubber. It's hanging upside-down in an AOpen HX08 where the lower HDD-bay usually rests.



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