Floppy controllers was Re: [Color Computer] [Coco]Re: Transferutilities

[Gene Heskett]

On Sunday 09 October 2005 12:35, Glen VanDenBiggelaar wrote:
>I have been think about adding a fan, especialy, since I have to ad a
> fan for the second drive in my floppy case. I do have Mark and Boisy's
> Fantastic (PLUG -not that they need it) 512K upgrade, and I have had my
> CoCo 3 up and running for 2 weeks straight (actually doing nothing, but
> displaying the callander on Multi-Vue) and although it does get warm,
> its not all that hot. But, I do agree, a fan would be good- but cutting
> a hole in my BRAND NEW CoCo 3 (again, Cloud 9) really hurts.
>-Glen

Aww, gee.  Mine doesn't have any fan holes in it, but the motherboard has
been attacked with a hot soldering iron & there is a notch in the rear
edge of the cover for a psu connector.  I removed the power supply stuff
in both it and the mpi. It has 2 megs in it, and a 63C09.  By removing the
power supply stuff and running it all (drives too) from a regular pc
supply, which has a fan but its seperate from the coco and doesn't even
blow on it, I have virtually no measureable heating.  I can lay a photo
thermometor over that 2 megs of memory, toss a couple of blankets over it
and get a temp rise of maybe 2 degrees over a period of several hours
covered like that.

99% of the coco's heat, once the 6809 is gone, is the psu parts, and you
can usually fry eggs on them.  Fans are nice, but I'd druther just get
rid of the src of the heat.   Saves on air conditioning don't you know. :)

>>And speaking of hardware mods, while doing the above also consider
>> cutting a hole under the keyboard to accommodate a box fan. A Tandy
>> 12v 0.15amp #273-243 works nicely and will keep your Coco memory
>> running cool. Pull air in through the bottom and out through the top
>> of the Coco. Really helps when 512K or more memory is installed.

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
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Copyright 2005 by Maurice Eugene Heskett, all rights reserved.