Easy way to slow down a case fan?

Ease

Ease

Ease

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14 Dec 2008
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628
Hi all, I'm trying to slow down one of my 80mm fans (with a 4pin molex connector), and I'm not being very succesful. I tried swapping the Yellow-Black wires to Yellow-Red to reduce the voltage to 7V. The fan still works... but at exactly the same speed (or at least as far as I can tell... tis hard to judge RPM when the fan is a blur =P). Do any of you have a (cheap) solution?

P.s. If it helps, I have thousand of resistors, potentiometers, e.t.c lying around my room, so if you think of any electronic solution please suggest that as well!
 
you should notice the difference between 12v and 7v, if 7v is still too fast you can also 5v mod too.

MW
 
Zalman ZM-RC56 :)

RC-56_epcn.jpg


Google it :)
 
Diggsy, that's what I've done. I'm on 7V and the speed hasn't changed at all. Will try 5V later, when my hand stops hurting from accidentally cutting it open with a screw driver =P
 
The speed should definately have changed - no question, so you may well not have done it correctly. Either that or for some unknown reason the fan has only being getting 7v in the first place, although I can't see how that could be possible if it's using a standard molex plug.
 
Yep I relise now after re-reading the post and Diggsy comment, added the cable on post 10
 
there used to be a company called baybus.co.uk that used to make custom made baybuses. they would make them in either your 3.5 or 5.5" drive bays but that was back in the day when having 20 case fans was deemed cool lol

MW
 
I was cleaning my case interior and accidently touched a fan blade with my finger ending in a nice centermeter thick chunk out of top. shattered the fan resulting in a resolution to your problem. abit painfull though but its cheap! :D
 
Google "Making high-power fan controllers", not exactly easy, but is the best way of doing it, and you said you have loads of electronic components to hand to make a one channel version.
 
Bubo said:
Google "Making high-power fan controllers", not exactly easy, but is the best way of doing it, and you said you have loads of electronic components to hand to make a one channel version.
Click to expand...

Ooo, I saw some interesting options... now to find my soldering iron!
 
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