[C320-list] C320 and a 60 amp Alternator

[Jeffrey Hare]

Hi Bruce,

I agree with Robert Perrin.. :)  Go for the wine.. :)

However...

I recommend a 3rd starting batteries and running your main 4Ds in parallel
almost without exception.   Better for the batteries and more usable power.

Whether you need a externally regulated alternator depends on how you
actually use your boat.  If you have regular shore power, and don't spend
extended periods of time under sail and at anchor without running the
engine, then the stock alternator is simpler and just fine.

The internal alternator won't produce 60A long enough in practice to do much
charging, but it's still a better than the 55A found on the 3gm yanmars.
(Probably the same alternator with different thermal management or heavier
regulating diodes, who knows.)

I suggest upgrading the alternator only if you need to be able to fully
charge your batteries using the engine.  You'll only get 3 STEP/STAGE
regulation using an external regulator, or quality shore power charger.
People keeping their boat on moorings should do this in my opinion, or
they'll have seriously reduced life and/or capacity in their main batteries.

My opinions of course...
-JeffH






-----Original Message-----
From: June Bruce [mailto:brucestanley36 at hotmail.com] 
Sent: Monday, May 01, 2006 7:34 AM
To: C320-List at catalina320.com
Subject: [C320-list] C320 and a 60 amp Alternator

Our Yanmar 3YM30 has arrived with a 60 amp Alternator
Two Questions:

Is this 5 amps greater than previous Yanmar alternators?
And more importantly,
would most regular users still expect that greater electrical UMPH is still 
necessary?
ie.
A)	75 Amp Alternator
B)	Smart 3 phase Regulator and
C)	3rd Starting Battery

Or should just spend the budget on some good Aussie Wine ;)

Thanks for the C320 List, it is real boost to new owners!

Bruce Stanley, #1084, Fantastic Lady, Sydney Australia



!!- _______________________________________
!!- C320-List at catalina320.com mailing list
!!- Archives Here: http://www.catalina320.com/list/archives
!!- Change Subscription Here: http://www.catalina320.com/list/change
!!- Subscribe Here: http://www.catalina320.com/list/join