Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 03-08-2012, 07:42   #16
Registered User

Join Date: Apr 2012
Location: RI
Boat: Tartan 3800
Posts: 122
Re: Balmar the only choice?

Ah, saw you in Brenton Cove over the 4th. great boat you have there.

LUNA
Tartan 3800 #3
__________________

__________________
bmm32005 is offline   Reply With Quote
Old 03-08-2012, 08:21   #17
Registered User

Join Date: May 2009
Location: Massachusetts
Boat: 40' Silverton Aftcabin with twin Crusaders
Posts: 1,590
Re: Balmar the only choice?

IMHO alternators are not the best approach to battery charging. The copper wired stator (armature) has a positive temperature coefficient which means the hotter it gets, the higher the wire dissipation will be causing it to get hotter. Positive feedback.

There is a good chance the armature is toast. Bearings normally last years under normal conditions. When operated in a high temperature environment, life could be much shorter. So if you have your failed alternator rebuilt and if the stator-armature needs rewinding I suggest that you learn ahead of time what type of magnet wire is used. Magnet wire is the varnish like insulated wire used for these applications and it comes in many temperature classes. The lowest class that you should consider is E which is rated for 120 degrees C.

High current alternators could easily be improved with water cooling. This is not an insurmountable task for manufacturers.

Foggy
__________________

__________________
foggysail is offline   Reply With Quote
Reply

Tags
balmar

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 03:19.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.