In a message David Elmo <[EMAIL PROTECTED]> writes: << . . . .I happen to have lots of fans lying around and am thinking one will do to cool things a bit with a 10000 rpm Seagate I am fiddling with (I am thinking to just have it and nothing on top, even to mount it a bit higher (on a stilt arrangement I can make to give plenty of room for air flow -it being on a slider at the bottom seems a bit restrictive where all the circuitry is). What I wanted to ask Glen, who made a really nice pdf on the subject of fan fitting is this: did you also test temps without any extra fan at all?>>
Yes, the fan cooled the lower bay. However, I did not take note of how much. I was more concerned that the drive in the lower bay did not exceed it maximum specified operating temp. That's where the analogue thermometer comes in. Today, I stumbled across a ebay seller auctioning off a "fan cooling kit" that appears nearly identical to one the described in my pdf. Guess I should have obtained a patent for it ;)? The ebay seller claims a 7 F (4 C) drop in the lower bay due to his cooling kit. Keep in mind this is ebay. Most likely the cooling differential will vary with various hard drives. I suspect a hotter drive will see a greater temp drop than a cooler drive. However I have not tested this. One more note: When I installed a pair of 7200 RPM 18 GB Western Digital Drive in the same 7500 the temp in the lower bay increased about 10-15 F (5-8 C) to 110-115 F (43-46 C) with ambient room temp at 80 F (27 C). Still well below the specified 125 F (52 C) maximum for those drives. I suggest if you only have one drive install it in the upper bay. If you want two drives install the cooler drive in the lower bay and put the new "hot" drive in the upper bay and add some extra cooling support. --glen (digest mode) -- PCI-PowerMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Sonnet & PowerLogix Upgrades - start at $169 | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[email protected]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/> iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com
