Quiet Those Case Fans

Discussion in 'Gigabyte' started by mark7, Dec 27, 2003.

  1. mark7

    mark7 Guest

    I've found that the Stealth case fans are very quiet when running in my hand,
    but when they touch the case they make a noticeable humm.

    My solution was to hang all of the case fans on rubber bands, thusly:
    Mount two 1.5 inch long 6x32 bolts thru the case, protruding inside,
    with a nut tightened on the inside. One bolt is above the fan and one below.
    The bolts are slightly wider apart than the size of the fan housing; you don't
    want them touching the fan housing. For 80 mm case fans my bolts are
    about 3.5" apart.

    Cut a piece of 3,5" diameter inner tube about 1/2" wide and stretch around
    the 80mm fan housing, then hang the fan on the two bolts by stretching
    the rubber band over the bolts. The only contact between fan housing and
    the case is rubber. I used a 6" diameter inner tube for my 120 mm fan. Set
    the fan face very close to but not quite touching the case so it moves air thru
    the case instead of recirculating it.

    Visit your tire dealer for used inner tubes, the bigger variety the better.
    mark7, Dec 27, 2003
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  2. mark7

    cadull Guest

    Good idea. To reduce recirculation you could wrap the fan with 2 layers of
    rubber. Overhang the inner layer a little on the case side to act as a
    buffer against the case and only hook the outer layer on the bolts. If this
    inner layer touches the side, it may produce a little more noise - would
    have to test it.

    cadull, Jan 2, 2004
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  3. mark7

    Jim Kent Guest

    Useful idea, but not-so-good implementation. Rubber bands have
    miserable durability especially when exposed to warm moving air as
    they would be here. You should probably look for a more durable
    elastomer (neoprene or silicone), or use small springs. Unless you
    change these out every comple of months, you may find your fan
    free-falling onto some expensive hardware at some inconvenient time.
    Jim Kent, Jan 5, 2004
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