12v DC fan problem

Got my hammer out, and now I'm gonna open the box

Postby AndrewB » 10/15/03, 10:45 am

Is this an online merchant? I've never heared of it before.
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Postby SloppyGoat » 10/15/03, 4:22 pm

They're online and telephone order. Type Mouser and Digikey into google. Or call:

Digikey 1-800-digi-key
Mouser 1-800-346-6873

Request a catalogue from each. They're good for a few hours of browsing. Every time you open the damn things, you find something you need.
Does anybody really know what time it is?
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Postby Gerry » 10/15/03, 10:52 pm

<!-- BBCode Start --><TABLE bgColor=000000 cellPadding=0 width=400 border=1><TR><TD><FONT class="ot">OFF TOPIC: <!-- BBCode Quote Start --><TABLE BORDER=0 ALIGN=CENTER WIDTH=85%><TR><TD><font class=postbody>Quote:</font><HR width=100% color=#333333 SIZE=1></TD></TR><TR><TD><FONT class=quote><BLOCKQUOTE>On 2003-10-15 09:55, RedRage wrote:
<!-- BBCode Start --><TABLE bgColor=000000 cellPadding=0 border=1><TR><TD><FONT class="ot">OFF TOPIC: love the sig Gerry</font></TD></TR></TABLE><!-- BBCode End --></BLOCKQUOTE></FONT></TD></TR><TR><TD><HR width=100% color=#333333 SIZE=1></TD></TR></TABLE><!-- BBCode Quote End -->Heh, after coming back from a going away party, that was for my best mate, I was the most smashed I have ever been, but still managed to find SC anyway and the signature is the result. :-)</font></TD></TR></TABLE><!-- BBCode End -->
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<font class=editedby>[ This Message was edited by: Gerry on 2003-10-16 06:59 ]</font>
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Postby AndrewB » 10/19/03, 2:31 pm

I ended up returning the thing yesterday. I instead purchased a variable speed 1,500-2,300RPM 120mm fan. Today I bought myself a dremmel and am in the process of cutting myself a blowhole.
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Postby AndrewB » 10/20/03, 10:52 am

finished the blowhole today. System temps are down about 10 deg F and cpu temp is down a few degrees. I may have to increase the intake fan speed slightly, but that will make more noise >:(
I need to buy some more foam rubber. FYI, Spray adhesive doesn't stick as well as one would like. Any other suggestions? Rubber is trying to bond to steel here.
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Postby SloppyGoat » 10/20/03, 6:20 pm

3M spray adhesive should do the trick. It's not cheap, though. It keeps carpets in boats and cars down well.
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Postby Don » 10/21/03, 3:55 am

Do you have "Contact Cement" over there?
Yellow glue, used for laminating kitchen benchtops etc.. <br>that works well for glueing rubber to metal.
<br>Same stuff Sloppy is talking about really (Bear brand or 3M same difference) only it's in a little can so you can paint it on.   And as Sloppy say's below..   you have to let it go off (roughly until the surface of the glue stops feeling sticky) people who use it call it "tacky", but it's really the opposite of what you think tacky would be? - strange that, but anyway that's how it works..   I doubt if glue would hold the weight of the fan on it's own though, you would have to mount that with screws first I would think?   :)

<font class=editedby>[ This Message was edited by: Don on 2003-10-22 15:31 ]</font>
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Postby AndrewB » 10/21/03, 8:49 am

<!-- BBCode Quote Start --><TABLE BORDER=0 ALIGN=CENTER WIDTH=85%><TR><TD><font class=postbody>Quote:</font><HR width=100% color=#333333 SIZE=1></TD></TR><TR><TD><FONT class=quote><BLOCKQUOTE>
On 2003-10-21 02:20, SloppyGoat wrote:
3M spray adhesive should do the trick. It's not cheap, though. It keeps carpets in boats and cars down well.
</BLOCKQUOTE></FONT></TD></TR><TR><TD><HR width=100% color=#333333 SIZE=1></TD></TR></TABLE><!-- BBCode Quote End -->
thats what i used.
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Postby SloppyGoat » 10/22/03, 3:45 am

Did you let it tack first? It won't hold anything until it gets tacky. You pretty much have to let it dry for awhile before trying to stick anything to it.
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Postby AndrewB » 10/22/03, 1:00 pm

i did.
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Postby Gerry » 10/24/03, 1:05 am

<a href="http://www.overclockers.com/tips454/">Silent cooling.</a>
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Postby AndrewB » 10/25/03, 2:19 pm

I'll try it again after letting it sit for a minute or two and see what happens :
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Postby AndrewB » 10/28/03, 5:15 am

<!-- BBCode Quote Start --><TABLE BORDER=0 ALIGN=CENTER WIDTH=85%><TR><TD><font class=postbody>Quote:</font><HR width=100% color=#333333 SIZE=1></TD></TR><TR><TD><FONT class=quote><BLOCKQUOTE>
On 2003-10-21 11:55, Don wrote:
Do you have "Contact Cement" over there?
Yellow glue, used for laminating kitchen benchtops etc.. <br>that works well for glueing rubber to metal.
</BLOCKQUOTE></FONT></TD></TR><TR><TD><HR width=100% color=#333333 SIZE=1></TD></TR></TABLE><!-- BBCode Quote End -->

Letting the 3M spray get 'tacky' didn't do much better than before. How much does this contact cement usually cost?
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Postby SloppyGoat » 10/28/03, 12:26 pm

Rubber cement maybe? Don't know. :razz:
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Postby SOD » 10/28/03, 10:37 pm

Actually it is not rubber it is polyurethane foam...
A type of plastic...
The reason adhesives fail is because metal is not porous. Not to the extent you wish it to be anyway.
Foam rubber is a poor choice it begins to fall apart the moment it is made. Oxygen constantly cures the foam plastic.
The idea is good, just think of a better way to isolate
the fan different materials perhaps?
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