exact measurements for aluminum hard drive silencing plates?
Moderators: NeilBlanchard, Ralf Hutter, sthayashi, Lawrence Lee
exact measurements for aluminum hard drive silencing plates?
i'd like to sandwich my hard drive in aluminum plates as described in
this article. are those plates 1/2" thick? could anyone give me some exact measurements?
also, i'd like to be able to mount the drive cdrom drive bay, but the plates in that article look too small. any ideas?
thanks.
this article. are those plates 1/2" thick? could anyone give me some exact measurements?
also, i'd like to be able to mount the drive cdrom drive bay, but the plates in that article look too small. any ideas?
thanks.
-
- Patron of SPCR
- Posts: 2674
- Joined: Sun Jul 04, 2004 6:07 am
- Location: Houten, The Netherlands, Europe
Welcome to SPCR
As you can see that is a fairly old article. Sandwiching harddrives is no longer considered worth the effort. It is not even mentioned in the sticky HDD vibration & noise reducing methods - ranked.
As you can see that is a fairly old article. Sandwiching harddrives is no longer considered worth the effort. It is not even mentioned in the sticky HDD vibration & noise reducing methods - ranked.
thanks.
i would like to put an end to the acoustic (high pitch) noise, not the structure-borne vibrations. this is the only mention of how to get rid of acoustic noise:
i'm not completely sure the high pitch noises i'm hearing are not structure-borne vibrations, but that's what i gathered from the articles i've read. let me know if you think i'm wrong.
i would like to put an end to the acoustic (high pitch) noise, not the structure-borne vibrations. this is the only mention of how to get rid of acoustic noise:
doesn't smartdrive use the same principles that hard drive sandwiching does to reduce noise?SmartDrive - This doesn't totally belong here, because it is an enclosure device, not really a vibration dampener, per se. But does reduce damping, keeps the HDD from getting hot, and with an already quiet HDD, makes acoustic noise pretty much disappear together. Suspending this in elastic would be the ultimate, but the front bottom of a case that does not have 3.5" cages all the way to the floor is the only place you could do it.
i'm not completely sure the high pitch noises i'm hearing are not structure-borne vibrations, but that's what i gathered from the articles i've read. let me know if you think i'm wrong.
-
- Patron of SPCR
- Posts: 2674
- Joined: Sun Jul 04, 2004 6:07 am
- Location: Houten, The Netherlands, Europe
The smartdrive and other enclosures are more akin to the rubber box in: Rubber Boxes & Carved Foam: More HDD Silencing. With the sandwich you have a tight coupling between the drive and the aluminium plate. This just extends the object that emits the whine. With the rubber box and the commercial enclosures you have a loose coupling. As you can read in the article, even small gaps in the rubber box let all high pitched sound escape. This would be even more true for the sandwich, as the foam on the sides doesn't block sound. It only dampens it somewhat.
You don't see much people using the rubber box, as people are afraid it will overheat modern drives. Plus the rubber might be difficult to source. You don't see many people using the commerial enclosures, because most are so expensive people rather buy a non whining drive in stead.
You don't see much people using the rubber box, as people are afraid it will overheat modern drives. Plus the rubber might be difficult to source. You don't see many people using the commerial enclosures, because most are so expensive people rather buy a non whining drive in stead.
-
- Patron of SPCR
- Posts: 2674
- Joined: Sun Jul 04, 2004 6:07 am
- Location: Houten, The Netherlands, Europe
Decoupling helps some, but not much against high pitched whine. This is easy to test by holding the running drive in your hand or put it on something soft on the bottom of the case. For testing this can be anything soft you can find: a sponge from the bathroom (not wet ofcourse); a stack of socks; a folded towel; just be creative. If this helps and you think it is worth the effort, then you can think of some more permanent solution.
suprisingly, decoupling helped silence the HDD whine quite a bit. i put a couple pieces of foam underneath it for testing. it's still audible, but just not as loud.Tibors wrote:Decoupling helps some, but not much against high pitched whine. This is easy to test by holding the running drive in your hand or put it on something soft on the bottom of the case. For testing this can be anything soft you can find: a sponge from the bathroom (not wet ofcourse); a stack of socks; a folded towel; just be creative. If this helps and you think it is worth the effort, then you can think of some more permanent solution.
-
- Friend of SPCR
- Posts: 2887
- Joined: Mon Feb 28, 2005 4:21 pm
- Location: New York City zzzz
- Contact:
the most important part of a hd to keep cool is the board beneath the drive. If you put foam beneath that, it would roast much more easily. Actually, it is supposed to roast. Sandwich plates are a good heat sink idea, but I am unsure about dissipation. personally, I wouldnt without some air flow over the bottom of the drive.serfurj wrote:suprisingly, decoupling helped silence the HDD whine quite a bit. i put a couple pieces of foam underneath it for testing. it's still audible, but just not as loud.Tibors wrote:Decoupling helps some, but not much against high pitched whine. This is easy to test by holding the running drive in your hand or put it on something soft on the bottom of the case. For testing this can be anything soft you can find: a sponge from the bathroom (not wet ofcourse); a stack of socks; a folded towel; just be creative. If this helps and you think it is worth the effort, then you can think of some more permanent solution.
I noticed a dramatic decrease in the high pitch whine from my western digital after elastically suspending it.
I modified my Lian Li PC61 lower drive cage so I could have 3 suspended drives in there (Baracuda IV, 7200.7 and WD .. whatever).
My PSU is still far too noisy... and no one in Australia stocks Seasonic PSUs (that I'm aware of at least) OR Nexus fans.
I modified my Lian Li PC61 lower drive cage so I could have 3 suspended drives in there (Baracuda IV, 7200.7 and WD .. whatever).
My PSU is still far too noisy... and no one in Australia stocks Seasonic PSUs (that I'm aware of at least) OR Nexus fans.
-
- Patron of SPCR
- Posts: 2674
- Joined: Sun Jul 04, 2004 6:07 am
- Location: Houten, The Netherlands, Europe
There are enough examples of people using the "drive on foam in the bottom of the case" method on this forum. But if you are really afraid the drive will roast that way, than just flip your drive upside down. The part that is normally on top, is the coolest part of the drive anyway. And before anybody asks: Yes, it is perfectly safe to run a drive upside down or even standing on it's side. As long as it is at any right angle to gravity, it is OK.
Good to hear this works agains the whine from WD drives. With my Maxtor DM plus 45, it has only a little effect. (So it is demoted to emergency spare part.)
Good to hear this works agains the whine from WD drives. With my Maxtor DM plus 45, it has only a little effect. (So it is demoted to emergency spare part.)
Err, did I miss a memo? The very top link in that sticky, under the Best category, goes directly to the Sandwiching article. Sandwiching is actually very effective against whine, plus it helps reduce temperatures in suspended drives.Tibors wrote:Sandwiching harddrives is no longer considered worth the effort. It is not even mentioned in the sticky HDD vibration & noise reducing methods - ranked.
How much air goes over the underside of a drive mounted conventionally in a 3.5" HDD rack? Zero. The PCB generates a small portion of the total heat of the drive, the bulk comes from the spindle and the head actuator. That's why those parts are directly connected to the sides of the drive, which act as heatsinks. It's the platter you want to keep cool, the PCB elements are perfectly happy at temps that will back the data portions of the drive.~El~Jefe~ wrote:the most important part of a hd to keep cool is the board beneath the drive. If you put foam beneath that, it would roast much more easily. Actually, it is supposed to roast. Sandwich plates are a good heat sink idea, but I am unsure about dissipation. personally, I wouldnt without some air flow over the bottom of the drive.
-
- Patron of SPCR
- Posts: 2674
- Joined: Sun Jul 04, 2004 6:07 am
- Location: Houten, The Netherlands, Europe
Maybe I misunderstood, but there is at least one post somewhere on the forums where MikeC states he no longer uses sandwiches. Plus if I read the sticky, I think that link is there for the suspension part of the article, not for the sandwiching. Lastly, if a sandwich with some foam in the sides is effective then that conflicts with the observation about escaping sound in the rubberbox article I linked above.Rusty075 wrote:Err, did I miss a memo? The very top link in that sticky, under the Best category, goes directly to the Sandwiching article. Sandwiching is actually very effective against whine, plus it helps reduce temperatures in suspended drives.
Maybe Mike could shed some light on this
I used to have a pair of 7500RPM WD's in caddies which always ran cool owing to their dreaded & noisy built in 40mm fans. Was I glad to scrap these & suspend the drives in 3x 5.25" bays. Obviously the noise went down considerably!
Trouble was, even with the case open & at idle the drives ran warm (mid 40's), especially the circuit boards which were almost too hot to hold. I didn't bother to close the case & try a defrag, because it was already looking unacceptable. Hopefully you won't have a similar experience! You'll just have to see what happens in your own setup. Fortunately, an old 80mm fan suspended in front of these @ 5v proved inaudible & brought the drives down to the mid 30's.
I already had 2 layers of PaxMate foam inside the case & this is worthwhile. Generally things are pretty quite now.
Best of luck!
Trouble was, even with the case open & at idle the drives ran warm (mid 40's), especially the circuit boards which were almost too hot to hold. I didn't bother to close the case & try a defrag, because it was already looking unacceptable. Hopefully you won't have a similar experience! You'll just have to see what happens in your own setup. Fortunately, an old 80mm fan suspended in front of these @ 5v proved inaudible & brought the drives down to the mid 30's.
I already had 2 layers of PaxMate foam inside the case & this is worthwhile. Generally things are pretty quite now.
Best of luck!
-
- Site Admin
- Posts: 12285
- Joined: Sun Aug 11, 2002 3:26 pm
- Location: Vancouver, BC, Canada
- Contact:
Ys, it is true that I don't recommend sandwiching anymore. The link is there just to point to the suspension, as you suspect, Tibors, and I should clarify that. Sandwiching seems more of a hit/miss thing. It is less effective than a rubber box for acoustic silencing and much worse than decouple mounting for vibration reduction. If you are using noisy drives, it might still be an OK way to go, but you're much better off starting with a quiet drive anyway.Tibors wrote:Maybe I misunderstood, but there is at least one post somewhere on the forums where MikeC states he no longer uses sandwiches. Plus if I read the sticky, I think that link is there for the suspension part of the article, not for the sandwiching. Lastly, if a sandwich with some foam in the sides is effective then that conflicts with the observation about escaping sound in the rubberbox article I linked above.Rusty075 wrote:Err, did I miss a memo? The very top link in that sticky, under the Best category, goes directly to the Sandwiching article. Sandwiching is actually very effective against whine, plus it helps reduce temperatures in suspended drives.
Maybe Mike could shed some light on this