Charging system questions - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
  #1  
Old 07-30-2007
Lancer28's Avatar
I'm the FNG still...
 
Join Date: Jul 2007
Posts: 397
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
Lancer28 is on a distinguished road
Charging system questions

Hi everyone -

I am just getting started rebuilding my charging system after last week when I accidentally tried to charge both batteries at once and let the "magic smoke" out of my alternator and regulator.

The wires weren't up to spec with the length they were running, so I am gutting it all and replacing everything.

The engine is a johnson sail drive, 1978, with 15hp, model 15BEL I think. I have found a replacment alternator, but there are no wiring diagrams for my ship, and everything is grey, white, and one wire in there is red... (ARGH) another reason for re-wiring. Lucky me, everything is now located within 5 feet of the inboard engine, besides the two runs to battery banks now that I have pulled the engine electricals and consolidated them in one spot, so I don't have to disturb the crew sleeping if I were to have an emergency or electrical breakdown while out to sea.

My questions -

On the wiring - Can't I just have my alternator with a switch like the "on" terminal on the ignition to provide the 12V to the engine and field coil? The rest of the ship runs from the Battery Select switch to a large breaker panel.

After the alternator, is there a way I can get rid of the old regulator with relays in it (it is a wiring MESS!!!) and use a digital one?

Is there any forseeable problems wiring the Ground directly from the batteries to the engine/saildrive aithout going through a switch?

I've drawn up my own wiring diagrams for the ship, which I could attach if anyone is interested and it would help figure out how to wire up the new charging system.

My focus is to color code and simplify. There must be 100 extra wires in there running to and from old gauge panels, switches, breakers that are not there anymore, etc. This makes it really hard to find how to re-wire the old regulator back in, while holding a tester and stuffed into one of the rear berths in the summer heat. It's going to be basic - Battery switch to a "+" distribution block and then off to the various few components (one to the breaker panel, one to the starter switch, one to the bilge pump and radio), then finally splitting at the ignition switch off to the starter, engine gauges, alternator field coil, and cd player / stereo...

Thanks for any help with the regulator problem and any advice on how to wire in my new charging system!

Robert

Last edited by Lancer28; 07-30-2007 at 03:57 PM.
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 07-30-2007
tidepoolpaddleboater
 
Join Date: Jul 2007
Location: Portland, ME
Posts: 32
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
britcoal is on a distinguished road
Send a message via AIM to britcoal Send a message via MSN to britcoal
I was under the impression that charging the batteries on "ALL" was fine, although if one battery is older and holds less of a charge then the newer battery might not get fully charged.

What is the danger to systems, if at all, in charging on the "ALL" position?
Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 07-30-2007
hellosailor's Avatar
Senior Member
 
Join Date: Apr 2006
Posts: 10,797
Thanks: 2
Thanked 97 Times in 94 Posts
Rep Power: 10
hellosailor has a spectacular aura about hellosailor has a spectacular aura about
"What is the danger to systems, if at all, in charging on the "ALL" position?"
None in particular. It sounds like Robert's system simply failed from old age while it was trying to put out full power, i.e. into the larger battery bank.

Robert, I would suggest contacting Johnson to see if they can locate some schematics for you. First to confirm if that is a generator, or an alternator, and then to find out what type. Once you know that you can wire it to an external regulator appropriately. (Yes, something modern that doesn't rely on relays...like a 1960's car did.) And determine how it can be wired up.
Reply With Quote Quick reply to this message Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Refrigeration—Part II Selecting a System Tom Wood Gear and Maintenance Articles 0 05-19-2003 09:00 PM
Battery Bank Design Kevin Jeffrey Gear and Maintenance Articles 0 05-12-2003 09:00 PM
Battery Bank Design Kevin Jeffrey Cruising Articles 0 05-12-2003 09:00 PM
Upgrading Your Mainsail System Sue & Larry Her Sailnet Articles 0 11-17-2002 08:00 PM
Baterry Charging System Horizonlight Gear & Maintenance 4 07-14-2001 03:35 AM


All times are GMT -4. The time now is 09:07 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.