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From: (no name) (no email)
Date: Mon Aug 02 2004 - 09:53:47 EDT
In a message dated 8/2/04 12:04:14 AM, Arild writes:
<< So here we have a situation where a whole train is going to be held up
because a stupid little $50 maintenance free battery croaks and the "battery
maintainer alternator isn't powerful enough to bring the battery back up to
snuff so the computer won't shut dowen the electronic Vortec engine.
The comment has often been made on this list that with a car you simply pull
over to the side and walk away to get help.
This incident has got me revising my thinking on the subject.
The fact is you might see a similar situation on boats powered by the newer
computer controlled engines.
This is equally applicable to repowers and new-builds.
Unfortunately, many yards and even equipment suppliers are simply not aware
of the full implications this new technology has.
>>
I think Arild's observations support my Luddite position that electronically
controlled and electronically dependent engines have no place aboard a single
engined long range trawler. Is it not enough that a couple of air bubbles or a
glob of tank slime will kill most engines dead? Will we also have to become
paranoid about the electronic Gremlins that lurk in every switch and
transistor?
Remember that 1700 lightning strikes hit Florida every day. Even a near miss
can generate an electronic pulse that can fry most electronics on board. Do
YOU want to take your chances on that trip to Bimini? And I won't even mention
the Bermuda triangle.....
Once started, my old Perkins will continue to run even if I throw all the
batteries overboard. All electronically dependent engines should have a fall back
mode which will permit the engines to operate with reduced, but adequate,
power even with total electrical systems failure.
Larry Z
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