FYI: TX-1 Temp Study

[Charles W. Morehouse]

Folks,
Am in the process of restoring my Apache, and yes it does run too hot.  
Being a purist, I hate to drill extra holes but it must be done.
First I plan to install a muffin fan, blowing up, under the top lid.  
Will enlarge the holes slightly in the fan area.  Got to repaint anyway.
Will install an 80 mm fan on the final cage sucking out. A copper screen 
over the hole will keep the RF in.  Was thinking of musing 
thermostatically controlled 12 v
fans to keep the noise down.  Antec makes some nice ball bearing fans.  
A voltage doubler and regulator on the 6.3 vac will supply the 12 vdc.
Was thinking of an 80 mm fan also on the final cage of the Warrier.  Any 
better suggestions?  Has anyone had experience with the brush less dc 
fans in an RF environment.
Maybe should stick with 110 vac fans?  That way would not have to 
install the 12 vdc supply.
Wayne,
W4GBW



Peter A Markavage wrote:

>Wouldn't you want "more air flow up" rather then "more air flow down"?
>You want to suck the hot air out of the final compartment rather then
>circulating it around the inside of the final cage, especially since most
>of the side walls do not permit easy air flow "down and out".
>
>Pete, wa2cwa
>
>On Mon, 2 Jul 2007 12:39:16 -0700 Michael Waldrop <w5rkl at YAHOO.COM>
>writes:
>  
>
>>The larger muffin fan covers 95% of the final cage's top, providing
>>a lot more air flow down into the final cage than the original fan
>>every could. There is approximately 1/4 to 1/2" of clearance 
>>between
>>the top of the fan and top lip of the cabinet. I suspect this 
>>clearance
>>will be the same with the Apache.
>>
>>
>>73's
>>Mike
>>W5RKL
>>    
>>
>
>-----------------------------------------------------------
>Products bought, sold or traded here is the responsibility of the
>parties involved.  This list and the City of Tempe are not responsible
>for losses or misrepresentations of any kind.  Buyer beware!
>
>-----------------------------------------------------------
>This list is a public service of the City of Tempe, Arizona
>-----------------------------------------------------------
>
>Subscription control - http://www.tempe.gov/lists/control.aspx?list=HEATH
>To post - HEATH at LISTSERV.TEMPE.GOV
>Archives - http://listserv.tempe.gov/archives/HEATH.html
>
>  
>

-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved.  This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind.  Buyer beware!

-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------

Subscription control - http://www.tempe.gov/lists/control.aspx?list=HEATH
To post - HEATH at LISTSERV.TEMPE.GOV
Archives - http://listserv.tempe.gov/archives/HEATH.html