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From: bryan@cs.utexas.edu (Bryan Bayerdorffer)
Newsgroups: comp.sys.amiga
Subject: Re: Some cheers and jeers for C= Engineering
Message-ID: <3253@cs.utexas.edu>
Date: 31 Aug 88 22:58:26 GMT
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In article <2898@hubcap.UUCP> disd@hubcap.UUCP (Gary Heffelfinger) writes:
=-I'm the proud, and almost completely thrilled owner of a new A2000.
=-I'd like to thank Dave Haynie and
=-crew for the wonderfully clean and sharp looking motherboard (Rev 4.4).

	Ok, so what has changed in there since 4.3?  Just curious.

=-I'm pleased with the design.  The jet engine fan is going to take some 
=-getting used to, :^), but I'm pleased that it's there.  

	Yeah, I'm pleased with the design of the motherboard also, but less so
with the Hong Kong Special power supply (mfg by Elec & Eltec), including the
cooling "turbine" (Shicoh Giken).  This past weekend the fan bearing went to 
hell, which event was almost immediately followed by one of the larger radial
capacitors developing a leak.  This caused the ps to lock down after 
progressively shorter periods of time.  I took this opportunity to heave the
stock fan and replace it with Radio Shack's 3-inch 12VDC brushless fan.  I don't
know if it will last any longer than the old one, but it sure SOUNDS better
(and draws 0.05A less current to boot :-)).  This is due to the fact that it
has fewer, wider blades that are set at a steeper pitch, yielding 
correspondingly lower RPM for the same flow rate (as any pilot of propeller-
driven aircraft will tell you).  The old A1000 fan took this principle to an
extreme, which is one reason why you can hardly hear it.  Actually, the airflow
of this new fan seems to be a bit better than the old one.  If so, then it is 
also more efficient.
	The fan is actually quieter than my hard drive now, but the fan is
about 3/16" thicker, so it's a tight fit.

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