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Pastimes : Dream Machine ( Build your own PC )

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To: Paul K who wrote (5207)	1/17/1999 10:09:00 PM
From: Zeuspaul	Read Replies (1) of 14778

you just squeeze the two spring-like flanges inward and the nut pops out the back side... I had that part figured out. What do you squeeze it with? A standard pair of pliers will not work. If the cage nut is near a wall you cannot get any lateral force on it. If it were accessible one could push the two flanges in with two small screw drivers. (the case came with an additional fan... will see if I need it.) I spent most of the day playing with fans. The Super Micro SC750A CS-17 case came with three fans including the power supply fan. It sounded like a vacuum cleaner when I turned it on. I picked up six more 12 V fans at a local computer store. Four 3.15 in SQ by 1.0 in W brushless ball bearing 30 cfm 27 dB and two 2.36 in SQ by 0.79 in W 14.5 cfm 26 dB brushless ball bearing...$9 each. I was amazed how easy it was to install them, The 3 in fans just snap into the plastic holders that came with the case. There are two more holders so I will probably pick up two more three inch fans. I bent a small sheet metal strap and mounted one of the small fans blowing directly on the harddrive. Why so many? I am trying to quiet the thing down and keep it clean. I wire a pair of fans in series. This halves ( I think I am right this time...come on back Howard, I miss your quality posts) the voltage and causes the RPM to drop and the fan gets a lot quieter. It also moves less air. To compensate for the reduced air flow I use more fans. I also plan on adding 3M filtrete filter cloth to all of the intake fans. This will decrease the air flow too. I want positive air pressure inside the case. This will require enough intake fans to overpower the exhaust fans. I want all the air coming through the filters. I don't know what to do about the power supply fan. It is now the noisiest of the bunch. It is probably not a good idea to slow it down. Replacing it with the PC Power and Cooling Silencer would work but I am not prepared to do that yet. Maybe it will quiet down with the sides on. Zeuspaul

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