[TriLUG] laptop cooling fan

[David Burton]

Who says that?

There are several kinds of bearings used in these fans:
- simple bronze sleeve bearings (cheap)
- ball bearings (probably most common)
- hydrodynamic (oil film fluid) bearings

It is hard for me to imagine how spinning backward would affect the first
two, but I don't know enough about the 3rd to have an opinion.

Dave


On Sat, Oct 27, 2012 at 2:38 PM, Neil L. Little <nllittle at embarqmail.com>wrote:

> One thing we were told about using compressed/canned air when cleaning
> dust bunnies is not to spin the propellers ... er fans in the opposite
> direction. stick a toothpick or swab in the fan so it wont move and then
> ... blow away to your hearts content. bad for the bearings.
>
> 73,
> Neil Little, WA4AZL
>
> David Burton wrote:
>
>> They're pretty cheap at NewEgg:
>> http://www.newegg.com/Product/**ProductList.aspx?Submit=ENE&N=**
>> 100007639%20600028834&**IsNodeId=1&bop=And&Order=**PRICE&PageSize=50<http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100007639%20600028834&IsNodeId=1&bop=And&Order=PRICE&PageSize=50>
>>
>> However, if your laptop is having cooling issues, the *first* thing you
>> should do is to blow out the dust with canned air or an air compressor
>> hose.  Just blast compressed air into each and every ventilation
>> hole/grill
>> on the bottom, back & sides of the computer.
>>
>> The second thing is to put the computer on a hard surface, so that
>> ventilation holes on the bottom aren't blocked.
>>
>> Cooling pads are usually unnecessary.
>>
>> Dave
>>
>>
>> On Fri, Oct 26, 2012 at 7:25 PM, Michael Rulison
>> <13miketele at bellsouth.net>**wrote:
>>
>>
>>
>>> If one of you, by chance, has a flat cooling fan to place underneath a
>>> laptop,
>>> I'd be interested in buying a working one.
>>>
>>
>>