Small correction:
"The sudden high
current overheats the diodes and they fail open"
When the battery is disconnected while the alternator is charging the existing
field current will generate a high voltage spike that exceeds the reverse
voltage breakdown value. Normal diodes are rated for 60-10
Rather than filling pages and inboxes, Am assuming the subject is not of
interest to most in this level of detail. I Have replied in more detail, and
with a hypothesis, to josh and JF off list...(who may not be all that
interested either... Lol.)
Again, this site is well worth exploring o
I think he means One Design.
On Tue, Jul 19, 2016 at 6:36 PM, RANDY via CnC-List
wrote:
> Way to go Michael!
>
> One question: what did you mean by "OD" (in "It is not a OD where a
> computer has figured out the precise point to set everything, and
> anything even slightly off is slower").
>
> C
Way to go Michael!
One question: what did you mean by "OD" (in " It is not a OD where a computer
has figured out the precise point to set everything, and anything even slightly
off is slower").
Cheers,
Randy
- Original Message -
From: "Michael Brown via CnC-List"
To: "cnc-list"
Hi Dave,
Thanks for the added stuff.
Actually it seems to explain it all:
Why some alternators fry and some don't: The key here is the "Self
Exciting" part. The self exciting alternators don't need the ignition
return side at all. Basically all your key does is turn-off the
instrument
I've been doing a bit of work transferring way points. From many years of
transiting the Northern Gulf Coast, I've collected an extensive inventory
of "observed" way points. Fellow sailors have requested some or all of my
collection of way points and routes.
Years ago, the Admiral and I manually
There is a great explanation of all this here:
http://www.pirate4x4.com/tech/billavista/Wiring/Part2/
And, to complete your commentary below, a lucid explanation of the role of
the key switch circuit in our engines.
>>>snip
Field Current Supply
The field current supply is provided from one of t
I have heard all of this before and am still electrically confused. I have
a few theories but no proof. In the face of my theories is the fact that
it is not consistently repeatable. So here goes.
Turn the battery off while running and the alternator suddenly goes to full
output kinda like shif
I guess I didn't know what I was doing wrong - I had an overheating problem
which was intermittent. The annoying little buzzer would blast away but I
still had water flowing through the system (I guess not quite enough to
satisfy the sensor). After more than a few minutes of this, I turned the key
I am just back from 47 hours of racing a C&C 30-1, the Lake Ontario 300
Scotch Bonnet course. We do the Double Handed Flying Sail class, and
carry both a symmetrical and asymmetrical spinnakers.
As usual Lake Ontario presents a wide range of sailing conditions even
over 2 days, ranging from dead a
Couple other data points:
The diesel mechanic gave me a huge DUH ! when I explained what had
happened.. He said, you just learned the hard way that you should never
turn off the ignition key on a diesel while it's running. What happened
was punishment for my brain fart.. The guy fixes diesels
Hi Dave,
Here's how I understood the whole thing. An alternator's design is
basically the reverse of a regular DC motor with an added twist..
On a regular DC motor the windings (Electro magnets) are on the spinning
armature and there are permanent magnets attached to the housing. You add
v
The 115 is rated 78/81 on the Chesapeake. 78 for spinnaker and 81 for non.
The difference for the one in our fleet is a longer than "J" pole.
Gary
From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Jim
Peterson via CnC-List
Sent: Friday, July 15, 2016 10:48 AM
To: cnc-list@
Recommend not to pinch, the boat seems to want to be free. Also, you should
have inboard genoa tracks to help pointing, but need to sheet the genoa
outboard for reaching. My tracks are about four feet aft of the shrouds, in
line with them and are six feet long– I have adjustable cars (Garhauer)
Thanks JF.
An interesting read here.
http://www.autoshop101.com/forms/alt_bwoh.pdf
A decent corrected alternator diagram here. Post #15
http://www.ybw.com/forums/showthread.php?224370-What-s-the-R-connection-for-on-a-Yanmar-Hitachi-alternator/page2
So, if I understand correctly the key swi
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